Prepare for and practice interview questions from Cesiumastro.

Cesiumastro Interview Questions

Cesiumastro Interview Guides

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

In an A/B test, how can you check if assignment to the various buckets was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

Random Bucketing

Cesiumastro Salaries by Position

::: {qa="job-description"}

Please Note:To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At

CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

We are seeking a highly skilled and experienced

Principal Ground Software Engineer Ito join our dynamic team. The ideal candidate is a principal-level software engineer with mandatory hands-on experience as a satellite operator, offering unique insights into the systems they will be building and integrating.

:::

JOB DUTIES AND RESPONSIBILITIES

- - Lead the design, development, and deployment of ground software systems for a new satellite system, including command and control, telemetry, telemetry database, and ground station software. - Rapidly execute to produce a simple, reliable ground system. - Implement real-time data acquisition, processing, and visualization systems for satellite telemetry. - Integrate and test ground software with satellite, ground stations, and network infrastructure. - Develop automated systems for satellite operation and ground system monitoring. - Conduct rigorous testing and validation of ground software, including simulations and real-world scenarios. - Troubleshoot and resolve software issues encountered during satellite operations. - Conduct tests with ground networks, spacecraft software and hardware simulators. - Collaborate closely with hardware engineers, satellite operators, and other software teams to ensure seamless integration and optimal performance. - Keep up to date with the latest advancements in satellite communication technology and incorporate relevant innovations into our systems. - Provide technical leadership and mentorship to the software development team, fostering a culture of excellence and continuous improvement.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

- - Minimum of 12 years of experience in software engineering, with a focus on satellite ground systems. - Bachelors or Masters degree in Computer Science, Engineering, or a related field. - Demonstrated experience leading a software team through product development. - Prior experience as a satellite operator is required to provide clarity into the true needs of the system being developed. - Proficiency in programming languages including Python, Java, and C++ - Experience in satellite test and data collection applications. - Strong knowledge of satellite communication protocols, such as CCSDS and CSP. - Familiarity with ground station hardware and RF communication principles. - Familiarity with common RF coding schemes, such as DVBS2. - Experience with network architectures and protocols, including TCP/IP and UDP. - Experience with load balancing network applications and managing cloud-based systems. - Knowledge of Linux/Unix operating systems and system administration. - Experience with software development methodologies, including Agile and DevOps practices. - Knowledge of cybersecurity best practices specific to satellite and ground systems. - Strong problem-solving-skills with the ability to diagnose and resolve complex software issues in real-time. - Optimistic, can-do attitude and the ability to produce in a chaotic environment. - Excellent communication and collaboration skills, with the ability to work effectively in a multidisciplinary team environment.

PREFERRED EXPERIENCE

- - Experience with the Space Development Agency NEBULA standard. - Ph. D in Computer Science, Engineering, or related field.

::: {qa="closing-description"}

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidates work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans.

CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

:::

Please Note:  To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At  CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

In this position, you will be responsible for low-level and high-level software in Cesium's products through all phases of the development process. Key projects will include Linux-based single-board computers and high-reliability microcontroller systems. Cesium's goal is to create an out-of-the-box hardware and software experience which enhances our customers' ability to rapidly integrate our products into their systems.

As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack, including microcontrollers, low-level drivers, board support packages (BSP), end-use applications, and user interfaces. Additionally, the ideal candidate will have experience in software testing and high-reliability qualification, as well as software engineering and software project management practices.

The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required.

JOB DUTIES AND RESPONSIBILITIES
Designing and implementing software for embedded devices and systems, from requirements to production and commercial deployment.
Designing, developing, coding, testing, debugging, and documenting system software.
Reviewing code and system designs.
Analyzing code for efficiency, stability, and scalability.
Integrating and validating new product designs.
Supporting software quality assurance and optimizing I/O performance.
Providing post-production/in-orbit customer support.
Interfacing with hardware design and development engineers.
Assessing third-party and open-source software.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS      A Bachelor of Science (BS) or Master of Science (MS) degree in Computer Science, Electrical Engineering, or Computer Engineering.
6+ years of industry experience in software development.
Experience in hands-on development and troubleshooting of embedded hardware. API design for interfacing with FPGAs.
Experience with products for aerospace applications.
Programming experience in C or C++.
Experience in embedded systems design with preemptive, multitasking real-time operating systems (experience with real-time Linux is desirable).
Familiarity with software configuration management tools, defect tracking tools, and peer review.
Excellent knowledge of real-time system coding techniques, IP protocols, interfaces, and hardware subsystems.
Excellent understanding of multi-threaded applications and resource management.
Excellent written and verbal communication skills.
PREFERRED EXPERIENCE      Adequate knowledge of reading electronics schematics and component data sheets.
Experience with ARM processors and fully-featured microcontrollers.
Experience in the design and development of a Software Development Kit (SDK).

$135,000 - $160,000 a year

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans.

CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer . All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are looking to add an Engineering Manager, Test Engineering to our team. If you are great at what you do, enjoy working in a startup environment, and are passionate about developing leading-edge hardware and software for satellites, spacecraft, and aerospace systems, we would like to hear from you. In this position, you will be responsible for managing the company's Test Engineering team. This highly technical group is responsible for designing test methods, systems, processes, and procedures. Technical focus areas on the team include antenna testing, electronics testing, environmental testing (thermal vacuum, vibration, shock), and test software. The team also conducts many of the tests that they design. You will be a front-line engineering manager at a small company; as such, your success will be dependent on strong technical experience and fundamentals as well as management skills. The successful candidate will also present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required. JOB DUTIES AND RESPONSIBILITIES <ul><ul><li>Lead a team of test engineers to meet company objectives, milestones, and success metrics.</li><li>Provide career guidance to all levels of engineers, helping them find long-term success in the company.</li><li>Drive the creation of hardware and software design processes and best practices to enable delivery of high-quality test solutions to our manufacturing team & customers.</li><li>Manage organizational alignment on test engineering common design flows, technical guidelines, and standards.</li><li>Create test strategies and critical milestones for new product development to enable successful customer deliveries.</li><li>Manage the team's budget and personnel growth, including authorizing and approving job descriptions and making hire/no-hire decisions.</li><li>Ensure the quality of engineering outputs from your team.</li><li>Distribute workloads to engineering resources on your team.</li><li>Provide mentorship to engineers and prospective engineering managers.</li><li>Review and approve purchase requests and timesheets.</li><li>Evaluate employee performance and compensation.</li><li>As needed, delegate day-to-day technical leadership by appointing functional test leads.</li></ul></ul> JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS <ul><ul><li>Bachelor of Science (BS) or higher degree in Electrical Engineering, Computer Engineering, Mechanical Engineering, Physics, or a related technical discipline from an accredited university.</li><li>Minimum of 5 years of industry experience as a test engineer or as a design engineer responsible for test development.</li><li>Minimum of 4 years of industry experience as an engineering manager with a track record of success.</li><li>Excellent written and verbal communication skills.</li></ul></ul> PREFERRED EXPERIENCE <ul><ul><li>Aerospace electronics design, development, and qualification.</li><li>Test software development or project management.</li></ul></ul> CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans. CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are seeking a highly skilled and experienced Principal Ground Software Engineer I to join our dynamic team. The ideal candidate is a principal-level software engineer with mandatory hands-on experience as a satellite operator, offering unique insights into the systems they will be building and integrating. JOB DUTIES AND RESPONSIBILITIES <ul><ul><li>Lead the design, development, and deployment of ground software systems for a new satellite system, including command and control, telemetry, telemetry database, and ground station software.</li><li>Rapidly execute to produce a simple, reliable ground system.</li><li>Implement real-time data acquisition, processing, and visualization systems for satellite telemetry.</li><li>Integrate and test ground software with satellite, ground stations, and network infrastructure.</li><li>Develop automated systems for satellite operation and ground system monitoring.</li><li>Conduct rigorous testing and validation of ground software, including simulations and real-world scenarios.</li><li>Troubleshoot and resolve software issues encountered during satellite operations.</li><li>Conduct tests with ground networks, spacecraft software and hardware simulators.</li><li>Collaborate closely with hardware engineers, satellite operators, and other software teams to ensure seamless integration and optimal performance.</li><li>Keep up to date with the latest advancements in satellite communication technology and incorporate relevant innovations into our systems.</li><li>Provide technical leadership and mentorship to the software development team, fostering a culture of excellence and continuous improvement.</li></ul></ul> JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS <ul><ul><li>Minimum of 12 years of experience in software engineering, with a focus on satellite ground systems.</li><li>Bachelor's or Master's degree in Computer Science, Engineering, or a related field. </li><li>Demonstrated experience leading a software team through product development. </li><li>Prior experience as a satellite operator is required to provide clarity into the true needs of the system being developed.</li><li>Proficiency in programming languages including Python, Java, and C++</li><li>Experience in satellite test and data collection applications.</li><li>Strong knowledge of satellite communication protocols, such as CCSDS and CSP.</li><li>Familiarity with ground station hardware and RF communication principles.</li><li>Familiarity with common RF coding schemes, such as DVBS2.</li><li>Experience with network architectures and protocols, including TCP/IP and UDP.</li><li>Experience with load balancing network applications and managing cloud-based systems.</li><li>Knowledge of Linux/Unix operating systems and system administration.</li><li>Experience with software development methodologies, including Agile and DevOps practices.</li><li>Knowledge of cybersecurity best practices specific to satellite and ground systems.</li><li>Strong problem-solving-skills, with the ability to diagnose and resolve complex software issues in real-time.</li><li>Optimistic, can-do attitude and the ability to produce in a chaotic environment.</li><li>Excellent communication and collaboration skills, with the ability to work effectively in a multidisciplinary team environment.</li></ul></ul> PREFERRED EXPERIENCE <ul><ul><li>Experience with the Space Development Agency NEBULA standard.</li><li>Ph. D in Computer Science, Engineering, or related field.</li></ul></ul> CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans. CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Please Note:  To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At  CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

We are looking to add a  Senior Flight Software Engineer II  to our Internal Missions team. If you enjoy working in a startup environment and are passionate about developing software for leading-edge communications satellites, we would like to hear from you.

In this position, you will be responsible for the Cesium satellite flight software and software-in-the-loop testing through all stages of the development process. Your work will include developing software to monitor, test, and control spacecraft subsystems such as attitude, command and data handling, navigation, thermal, and power. The ideal candidate will be an experienced spacecraft software engineer, motivated to develop every aspect of space mission software from Linux-based satellite operating systems to low-level embedded products. You will work and learn from a cohort of senior and principal software engineers. You will use your experience to direct, mentor, and grow a team of motivated spacecraft engineers in the development of a new satellite system.

As a Cesium team member, you will work on a small team to develop satellites and put them in orbit. You will be responsible for software design to include initial architecture and block diagrams, requirements definition, implementation, code review, and validation and verification. You will need to identify simplifying solutions to simulate complex problems and explain key results and decisions to the team.

JOB DUTIES AND RESPONSIBILITIES
Design and implement software to build and integrate mission systems including satellites, ground stations, and mission operations centers.
Design, develop, code, test, debug, and document system software.
Review code and system designs.
Analyze code for efficiency, stability, and scalability.
Integrate and validate new product designs.
Support software quality assurance and optimize I/O performance.
Provide post-production/in-orbit customer support.
Interface with hardware design and development engineers.
Assess third party and open-source software.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS      Bachelor of Science (BS), Master of Science (MS), or Doctorate (PhD) degree in Software or Computer Engineering from an accredited university or institution.
Minimum of 6 years of industry experience in spacecraft software development. A Master's degree may count as two years of experience.
Experience in hands-on development and troubleshooting of software systems and hardware (such as motors, power distribution units, etc.).
Experience with C, C++, Python, or other languages in an aerospace context.
A strong understanding of space missions from conception through flight and disposal.
Familiarity with spacecraft mission design including events, pointing modes, maneuver planning, sequencing, and operations.
Experience with spacecraft failure in post-CDR testing and on-orbit, root cause analysis, and recovery.
Experience with design for reliability, spaceflight redundancy, and fault detection, identification, and recovery.
Space software experience with attitude dynamics, coordinate frame transformations, vector mathematics, radiative heat transfer, spacecraft propulsion, space communication systems, and power systems.
Experience with communication protocols such as TCP/IP or UDP for use in software-in-the-loop and hardware-in-the-loop lab development and for use in space flight.
Experience in interfacing a variety of open-source software to create an integrated system.
Embedded software experience, particularly for space missions.
Ability to implement physical first principles as scripts or spreadsheets.
Experience with processes for software release, revisioning, and configuration.
Familiarity with configuration management tools, defect tracking tools, and peer review.
Experience with trades and processes for handling radiation tolerance in software on automotive grade parts.
Familiarity with systems for continuous integration, test, and delivery.
Excellent understanding of multi-threaded applications and resource management.
Excellent written and verbal communication skills.
PREFERRED EXPERIENCE      CubeSat and SmallSat experience including LEO, MEO, GEO, and beyond.
Hands-on experience with spacecraft instrumentation, subsystems, and test labs.
Experience with JPL F', NASA cFS, and other commercial space software frameworks.
Experience with ground system software engineering for space missions.
Experience in a team leadership role on a space software program.
Experience in other non-space safety critical software programs.
Experience with network security.

$135,000 - $160,000 a year

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans.

CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer . All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. In this position, you will be responsible for low-level and high-level software in Cesium's products through all phases of the development process. Key projects will include Linux-based single-board computers and high-reliability microcontroller systems. Cesium's goal is to create an out-of-the-box hardware and software experience which enhances our customers' ability to rapidly integrate our products into their systems. As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack, including microcontrollers, low-level drivers, board support packages (BSP), end-use applications, and user interfaces. Additionally, the ideal candidate will have experience in software testing and high-reliability qualification, as well as software engineering and software project management practices. The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required. JOB DUTIES AND RESPONSIBILITIES <ul><ul><li>Designing and implementing software for embedded devices and systems, from requirements to production and commercial deployment.</li><li>Designing, developing, coding, testing, debugging, and documenting system software.</li><li>Reviewing code and system designs.</li><li>Analyzing code for efficiency, stability, and scalability.</li><li>Integrating and validating new product designs.</li><li>Supporting software quality assurance and optimizing I/O performance.</li><li>Providing post-production/in-orbit customer support.</li><li>Interfacing with hardware design and development engineers.</li><li>Assessing third-party and open-source software.</li></ul></ul> JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS <ul><ul><li>A Bachelor of Science (BS) or Master of Science (MS) degree in Computer Science, Electrical Engineering, or Computer Engineering.</li><li>6+ years of industry experience in software development.</li><li>Experience in hands-on development and troubleshooting of embedded hardware. API design for interfacing with FPGAs.</li><li>Experience with products for aerospace applications.</li><li>Programming experience in C or C++.</li><li>Experience in embedded systems design with preemptive, multitasking real-time operating systems (experience with real-time Linux is desirable).</li><li>Familiarity with software configuration management tools, defect tracking tools, and peer review.</li><li>Excellent knowledge of real-time system coding techniques, IP protocols, interfaces, and hardware subsystems.</li><li>Excellent understanding of multi-threaded applications and resource management.</li><li>Excellent written and verbal communication skills.</li></ul></ul> PREFERRED EXPERIENCE <ul><ul><li>Adequate knowledge of reading electronics schematics and component data sheets.</li><li>Experience with ARM processors and fully-featured microcontrollers.</li><li>Experience in the design and development of a Software Development Kit (SDK).</li></ul></ul> $135,000 - $160,000 a year CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans. CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are looking to add a Senior Flight Software Engineer II to our Internal Missions team. If you enjoy working in a startup environment and are passionate about developing software for leading-edge communications satellites, we would like to hear from you. In this position, you will be responsible for the Cesium satellite flight software and software-in-the-loop testing through all stages of the development process. Your work will include developing software to monitor, test, and control spacecraft subsystems such as attitude, command and data handling, navigation, thermal, and power. The ideal candidate will be an experienced spacecraft software engineer, motivated to develop every aspect of space mission software from Linux-based satellite operating systems to low-level embedded products. You will work and learn from a cohort of senior and principal software engineers. You will use your experience to direct, mentor, and grow a team of motivated spacecraft engineers in the development of a new satellite system. As a Cesium team member, you will work on a small team to develop satellites and put them in orbit. You will be responsible for software design to include initial architecture and block diagrams, requirements definition, implementation, code review, and validation and verification. You will need to identify simplifying solutions to simulate complex problems and explain key results and decisions to the team. JOB DUTIES AND RESPONSIBILITIES <ul><ul><li>Design and implement software to build and integrate mission systems including satellites, ground stations, and mission operations centers.</li><li>Design, develop, code, test, debug, and document system software.</li><li>Review code and system designs.</li><li>Analyze code for efficiency, stability, and scalability.</li><li>Integrate and validate new product designs.</li><li>Support software quality assurance and optimize I/O performance.</li><li>Provide post-production/in-orbit customer support.</li><li>Interface with hardware design and development engineers.</li><li>Assess third party and open-source software.</li></ul></ul> JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS <ul><ul><li>Bachelor of Science (BS), Master of Science (MS), or Doctorate (PhD) degree in Software or Computer Engineering from an accredited university or institution. </li><li>Minimum of 6 years of industry experience in spacecraft software development. A Master's degree may count as two years of experience.</li><li>Experience in hands-on development and troubleshooting of software systems and hardware (such as motors, power distribution units, etc.).</li><li>Experience with C, C++, Python, or other languages in an aerospace context. </li><li>A strong understanding of space missions from conception through flight and disposal. </li><li>Familiarity with spacecraft mission design including events, pointing modes, maneuver planning, sequencing, and operations. </li><li>Experience with spacecraft failure in post-CDR testing and on-orbit, root cause analysis, and recovery. </li><li>Experience with design for reliability, spaceflight redundancy, and fault detection, identification, and recovery. </li><li>Space software experience with attitude dynamics, coordinate frame transformations, vector mathematics, radiative heat transfer, spacecraft propulsion, space communication systems, and power systems.</li><li>Experience with communication protocols such as TCP/IP or UDP for use in software-in-the-loop and hardware-in-the-loop lab development and for use in space flight. </li><li>Experience in interfacing a variety of open-source software to create an integrated system.</li><li>Embedded software experience, particularly for space missions. </li><li>Ability to implement physical first principles as scripts or spreadsheets. </li><li>Experience with processes for software release, revisioning, and configuration. </li><li>Familiarity with configuration management tools, defect tracking tools, and peer review. </li><li>Experience with trades and processes for handling radiation tolerance in software on automotive grade parts.</li><li>Familiarity with systems for continuous integration, test, and delivery. </li><li>Excellent understanding of multi-threaded applications and resource management.</li><li>Excellent written and verbal communication skills. </li></ul></ul> PREFERRED EXPERIENCE <ul><ul><li>CubeSat and SmallSat experience including LEO, MEO, GEO, and beyond. </li><li>Hands-on experience with spacecraft instrumentation, subsystems, and test labs. </li><li>Experience with JPL F', NASA cFS, and other commercial space software frameworks. </li><li>Experience with ground system software engineering for space missions. </li><li>Experience in a team leadership role on a space software program. </li><li>Experience in other non-space safety critical software programs. </li><li>Experience with network security.</li></ul></ul> $135,000 - $160,000 a year CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans. CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are seeking a highly skilled and experienced Principal Ground Software Engineer I to join our dynamic team. The ideal candidate is a principal-level software engineer with mandatory hands-on experience as a satellite operator, offering unique insights into the systems they will be building and integrating. JOB DUTIES AND RESPONSIBILITIES <ul><ul><li>Lead the design, development, and deployment of ground software systems for a new satellite system, including command and control, telemetry, telemetry database, and ground station software.</li><li>Rapidly execute to produce a simple, reliable ground system.</li><li>Implement real-time data acquisition, processing, and visualization systems for satellite telemetry.</li><li>Integrate and test ground software with satellite, ground stations, and network infrastructure.</li><li>Develop automated systems for satellite operation and ground system monitoring.</li><li>Conduct rigorous testing and validation of ground software, including simulations and real-world scenarios.</li><li>Troubleshoot and resolve software issues encountered during satellite operations.</li><li>Conduct tests with ground networks, spacecraft software and hardware simulators.</li><li>Collaborate closely with hardware engineers, satellite operators, and other software teams to ensure seamless integration and optimal performance.</li><li>Keep up to date with the latest advancements in satellite communication technology and incorporate relevant innovations into our systems.</li><li>Provide technical leadership and mentorship to the software development team, fostering a culture of excellence and continuous improvement.</li></ul></ul> JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS <ul><ul><li>Minimum of 12 years of experience in software engineering, with a focus on satellite ground systems.</li><li>Bachelor's or Master's degree in Computer Science, Engineering, or a related field. </li><li>Demonstrated experience leading a software team through product development. </li><li>Prior experience as a satellite operator is required to provide clarity into the true needs of the system being developed.</li><li>Proficiency in programming languages including Python, Java, and C++</li><li>Experience in satellite test and data collection applications.</li><li>Strong knowledge of satellite communication protocols, such as CCSDS and CSP.</li><li>Familiarity with ground station hardware and RF communication principles.</li><li>Familiarity with common RF coding schemes, such as DVBS2.</li><li>Experience with network architectures and protocols, including TCP/IP and UDP.</li><li>Experience with load balancing network applications and managing cloud-based systems.</li><li>Knowledge of Linux/Unix operating systems and system administration.</li><li>Experience with software development methodologies, including Agile and DevOps practices.</li><li>Knowledge of cybersecurity best practices specific to satellite and ground systems.</li><li>Strong problem-solving-skills, with the ability to diagnose and resolve complex software issues in real-time.</li><li>Optimistic, can-do attitude and the ability to produce in a chaotic environment.</li><li>Excellent communication and collaboration skills, with the ability to work effectively in a multidisciplinary team environment.</li></ul></ul> PREFERRED EXPERIENCE <ul><ul><li>Experience with the Space Development Agency NEBULA standard.</li><li>Ph. D in Computer Science, Engineering, or related field.</li></ul></ul> $145,000 - $180,000 a year CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans. CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. In this position, you will be responsible for low-level and high-level software in Cesium's products through all phases of the development process. Key projects will include Linux-based single-board computers and high-reliability microcontroller systems. Cesium's goal is to create an out-of-the-box hardware and software experience which enhances our customers' ability to rapidly integrate our products into their systems. As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack, including microcontrollers, low-level drivers, board support packages (BSP), end-use applications, and user interfaces. Additionally, the ideal candidate will have experience in software testing and high-reliability qualification, as well as software engineering and software project management practices. The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required. JOB DUTIES AND RESPONSIBILITIES Designing and implementing software for embedded devices and systems, from requirements to production and commercial deployment. Designing, developing, coding, testing, debugging, and documenting system software. Reviewing code and system designs. Analyzing code for efficiency, stability, and scalability. Integrating and validating new product designs. Supporting software quality assurance and optimizing I/O performance. Providing post-production/in-orbit customer support. Interfacing with hardware design and development engineers. Assessing third-party and open-source software. JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS A Bachelor of Science (BS) or Master of Science (MS) degree in Computer Science, Electrical Engineering, or Computer Engineering. 6 years of industry experience in software development. Experience in hands-on development and troubleshooting of embedded hardware. API design for interfacing with FPGAs. Experience with products for aerospace applications. Programming experience in C or C++. Experience in embedded systems design with preemptive, multitasking real-time operating systems (experience with real-time Linux is desirable). Familiarity with software configuration management tools, defect tracking tools, and peer review. Excellent knowledge of real-time system coding techniques, IP protocols, interfaces, and hardware subsystems. Excellent understanding of multi-threaded applications and resource management. Excellent written and verbal communication skills. PREFERRED EXPERIENCE Adequate knowledge of reading electronics schematics and component data sheets. Experience with ARM processors and fully-featured microcontrollers. Experience in the design and development o a Software Development Kit (SDK). $135,000 - $160,000 a year CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate's work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package featuring health, dental, vision, HSA, FSA, life and retirement plans. CesiumAstro, Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

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