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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

Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

Russell Tobin Salaries by Position

What are we looking for in our Senior Data Engineer? 8 months contract (with possibility of extension) Remote role $55-65/hour on W2 (depending on experience) Responsibilities <ul> <li>Build and incorporate automated unit tests and participate in integration testing efforts</li> <li>Troubleshoot data issues and perform root cause analysis</li> <li>Work across teams to resolve operational & performance issues</li> <li>Propose solutions and designs to reduce performance issues and improve efficiency</li> <li>Perform cost analysis across data products</li> </ul> Qualifications and technical skills required <ul> <li>BS degree in Computer Science or related field or experience in lieu of degree</li> <li>Programming experience in Python or Scala, preferred.</li> <li>Experience building domain-driven Microservices</li> <li>Experience with data modeling in different data stores</li> <li>Experience working with Big Data processing frameworks such as Spark, Hive, etc.</li> <li>Experience working with Big Data streaming frameworks such as Nifi, Spark-Streaming, Flink, etc.</li> <li>Experience working with Big Data streaming services such as Kinesis, Kafka, etc.</li> <li>Experience with performance and scalability tuning</li> <li>Experience working in a public cloud environment, particularly AWS</li> <li>Familiarity with practices like Continuous Development, Continuous Integration, and Automated Testing</li> <li>Familiarity with Git and version control</li> </ul> RussellTobin offers eligible employee's comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), 401(k)-retirement savings, life & disability insurance, an employee assistance program, legal support, auto, home insurance, pet insurance and employee discounts with preferred vendors. #LI-GB1 #CB Rate/Salary: $55-65/hour on W2 (Depending on Experience)

What are we looking for in our Sr. Data Engineer? Pays - $40 - $45/hr (Depends Upon Experience) Remote 10 Months contract (Possible Extension) Job Description <ul><li>- Implement, verify, design, and maintain Data Management software systems </li><li>- Design, build, implement, and test data frameworks and solutions for ingestion, processing, and exposing data for consumption by systems, analytics, or reporting </li><li>- Research and discover new methods to acquire data and new applications for existing data and data solutions </li><li>- Work with other members of the data team and Technology teams to collaborate on solutions and solve problems </li><li>- Work with the Lines of Business to understand their problems and create a solution to meet their needs </li><li>- Educate others around the company on best practices and usage patterns of the Data Management systems </li> </ul>Skills<ul><li>- 1-3 years of experience </li><li>- Database architecture and data warehousing </li><li>- Data modeling, mapping, and mining </li><li>- ETL/ELT experience using SSIS, Informatica, or DataStage </li><li>- Proficiency in SQL and various DBMS platforms MS SQL, Oracle, Snowflake </li><li>- Familiarity with Windows and Linux OS and scripting languages like PowerShell </li><li>- Experience with reporting/visualization tools, Cognos </li> </ul> Benefits that Russell Tobin offers: Russell Tobin offers eligible employees comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance, and hospital indemnity), a 401(k)-retirement savings, life & disability insurance, an employee assistance program, identity theft protection, legal support, auto and home insurance, pet insurance, and employee discounts with some preferred vendors.? #CB #LI-AK5 Rate/Salary: $40 - $45/hr

12+ month contractHybrid - Cupertino, CA 95014$70-80/hr W2 DOE We are looking for smart, creative Software Engineers and Developers with expertise in embedded programming, edge and on-device implementations of algorithms, Frameworks, and image or time-series data. Working knowledge of Machine learning and signal processing tools will broaden your role and effectiveness in this position. The team you will join is responsible for creating product features for Apple's existing and future devices. In this role, you will:<ul><li>Work closely with machine learning and software engineering experts within the</li><li>Partner with a variety of product teams across You will work cross-functionally with machine learning scientists, sensor architects and software engineers to build the next generation of sensing technologies.</li><li>Implement signal and machine learning algorithms on-device that process image or time-series data measured by various sensors in different Apple products</li><li>Prototype and define interactions end-to-end, in collaboration with HW, SW, and design partners</li><li>Design user studies SW and leverage prototypes to define success criteria</li></ul> Qualifications<ul><li>Expert in Swift, Objective-C, C++, or similar systems programming languages</li><li>Experience building libraries, frameworks, testing/automation, and command-line tools</li><li>Experience building iOS and watchOS apps with basic UI/UX design</li><li>Strong grasp of Apple's development APIs (UIKit, Cocoa, )</li><li>Strong understanding of object-oriented design, data structures, algorithm design, complexity analysis, performance analysis, problem-solving, and diagnosis</li><li>Deep understanding of multi-threaded programming and synchronization</li><li>Past experience in creating high-performance implementations of deep learning algorithms</li><li>Proficiency in Python programming</li><li>Able to communicate clearly and collaborate with cross-functional teams</li><li>Excellent problem-solving and root cause analysis skills</li><li>2+ years of software engineering experience</li></ul>Preferred Qualifications:<ul><li>Demonstrated ability to quickly learn and modify large, existing codebases</li><li>Experience designing high-performance software and algorithms for resource constrained embedded systems</li><li>Experience with on-device machine learning, deep learning, and using sensor data to power novel use cases and applications</li><li>Experience in human-computer interaction (HCI) space</li><li>Experience with signal processing, such as applying filtering to noisy signals</li></ul> Pride Global offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), 401(k)-retirement savings, life & disability insurance, an employee assistance program, legal support, auto, home insurance, pet insurance and employee discounts with preferred vendors.

<h3>Job Description</h3><div>Job Description<div>The US ACH Business Product Manager will oversee Corporate Cash Management’s (CCM) US ACH platform, managing its entire lifecycle from strategy to execution. You will work with internal teams across Operations, Technology, Finance, and Compliance to drive product development, address risks, and ensure smooth operations. Your role will involve managing daily functions, including metrics, budget, and revenue growth, while addressing non-financial risks and supporting audits and regulatory compliance.What We Offer:<ul><li>Inclusive, innovative environment with hybrid work options</li><li>Generous vacation, personal, and volunteer days</li><li>Competitive compensation with health, retirement, and family benefits</li><li>Educational resources, matching gifts, and volunteer programs</li></ul>Key Responsibilities:<ul><li>Lead the product strategy and oversight for the US ACH platform</li><li>Conduct product reviews, oversee launches, and manage marketing</li><li>Maintain product documentation and manage risks and compliance</li><li>Collaborate with stakeholders to identify needs and secure funding</li></ul>Requirements:<ul><li>Bachelor’s degree in Economics, Business, Finance, or related field; Master’s preferred</li><li>Experience in ACH payments; AAP Certification a plus</li><li>Knowledge of clearing systems, regulatory frameworks, and risk management</li><li>Extensive product management experience with strategic planning and risk management</li></ul>Preferred Skills:<ul><li>Proficiency in MS Office</li><li>Strong interpersonal, analytical, and problem-solving skills</li><li>Ability to manage multiple priorities and work across time zones</li><li>Effective communicator and team player with global collaboration experience</li></ul></div></div>

Job Title: Software Engineer Location: Cupertino, CA 95014 Hybrid schedule (Tues-Thurs onsite)Duration: 1 year plus/ContractPay Range: $70/hr-$80/hr on W2 (DOE) SummaryWe are looking for a software engineer who is passionate about developing innovative product features and human-computer interactions. We are looking for candidates with expertise in embedded systems programming, edge and on-device implementations of algorithms, Frameworks, and experience in time-series data. QUALIFICATIONS<ul><li>Expert in Swift, Objective-C, C++, or similar systems programming languages</li><li>Experience building libraries, frameworks, testing/automation, and command-line tools</li><li>Experience building iOS and watchOS apps with basic UI/UX design</li><li>Strong grasp of Apple's development APIs (UIKit, Cocoa, )</li><li>Strong understanding of object-oriented design, data structures, algorithm design, complexity analysis, performance analysis, problem-solving and diagnosis</li><li>Deep understanding of multi-threaded programming and synchronization</li><li>Past experience in creating high-performance implementations of deep-learning algorithms</li><li>Proficiency in Python programming</li><li>Able to communicate clearly and collaborate with cross-functional teams</li><li>Excellent problem-solving and root-cause analysis skills</li><li>2+ years of software engineering experience</li></ul> PREFERRED QUALIFICATIONS:<ul><li>Demonstrated ability to quickly learn and modify large, existing codebases</li><li>Experience designing high performance software and algorithms for resource constrained embedded systems</li><li>Experience with on-device machine learning, deep learning, and using sensor data to power novel use cases and applications</li><li>Experience in human computer interaction (HCI) space</li><li>Experience with signal processing, such as applying filtering to noisy signals</li></ul> In this role, you will:<ul><li>Work closely with machine learning and software engineering experts within the</li><li>Partner with a variety of product teams across You will work cross-functionally with machine learning scientists, sensor architects and software engineers to build the next generation of sensing technologies.</li><li>Implement signal and machine learning algorithms on-device that process image or time- series data measured by various sensors in different Apple products</li><li>Prototype and define interactions end-to-end, in collaboration with HW, SW, and design partners</li><li>Design user studies SW and leverage prototypes to define success criteria</li></ul> Education & ExperienceBS or MS in Computer Engineering, Computer Science, or equivalent experience. Benefits InfoRussell Tobin offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), 401(k)-retirement savings, life & disability insurance, an employee assistance program, legal support, auto, home insurance, pet insurance and employee discounts with preferred vendors.

Senior Data Engineer FTE | Permanent Role $125K - $145K base salaryPhoenix, AZ (Hybrid / 2 days in office and 3 days remote work) <ul><li>Key technologies: MSFT SQL Server, SSIS, Python, Azure and or AWS</li></ul> Requirements:<ul><li>8+ years of experience</li></ul> Nice to have:<ul><li>10+ Years of Data Engineering experience</li><li>Healthcare domain knowledge</li></ul> Benefits that Russell Tobin offers:Russell Tobin offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), a 401(k)-retirement savings, life & disability insurance, an employee assistance program, identity theft protection, legal support, auto and home insurance, pet insurance, and employee discounts with some preferred vendors.

Job Title: Software Development Engineer (Linux kernel)Location: Hillsboro, OR 97006Type: 10 Months contractPay Range: $60/hr-$70/hr on W2 (DOE) Summary:We are seeking a highly skilled and experienced Linux Kernel Development Contractor to join our team. The successful candidate will have a strong background in Linux kernel development, device driver development, and Linux distribution development. In this role, you will:<ol><li>Develop and maintain Linux kernel modules and device drivers.</li><li>Work on Linux kernel memory management, load, and boot process.</li><li>Contribute to Linux virtualization development.</li><li>Utilize software development tools such as compilers and git.</li><li>Work with the Yocto build system.</li></ol> Qualifications: (Technical Skills)<ul><li>Strong experience in Linux kernel development and device driver development.</li><li>In-depth knowledge of Linux kernel memory management, load, and boot process.</li><li>Experience with Linux virtualization technologies.</li><li>Proficiency in software development tools such as compilers and git.</li><li>Experience with Debian package creation and management.</li><li>Familiarity with the Yocto build system.</li></ul> Best vs. Average:<ul><li>Yocto image building</li><li>Linux kernel development</li><li>Linux device driver development</li><li>Virtualization in Linux</li><li>Emulation / FPGA experience</li></ul> Skills Required<ul><li>Minimum 5+ years’ experience with Strong experience with Git, specifically proficiency with Git protocols.</li><li>Minimum 5+ years’ experience with Linux kernel knowledge, focusing on kernel development or device driver development.</li><li>Minimum 5+ years’ experience with Yocto build system.</li><li>Degrees or certifications required: A degree is required to be eligible for this role.</li></ul> Hard Skills AssessmentsExpected Dates that Hard Skills Assessments will be scheduled: ASAP.Hard Skills Assessment Process: The assessment process will include 1 roundRequired Candidate Preparation: Assessment would primarily ask about these areas, suggesting a refresher on Linux kernel and Yocto would be ideal for candidates. Benefits InfoRussel Tobin offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), 401(k)-retirement savings, life & disability insurance, an employee assistance program, legal support, auto, home insurance, pet insurance and employee discounts with preferred vendors.

What are we looking for in our Technical Data Analyst?
 
 Russell Tobin's client, a multinational business software company is hiring an Technical Data Analyst to work remotely

Apply Now!
Employment Type: Contract/Remote
Pay rate: $58-$68/hr. DOE 
Responsibilities:
<ul>
<li>This role will focus on building, enhancing, and maintaining a comprehensive feature engineering pipeline that empowers analysts and data scientists to easily analyze snapshotted metrics and build machine learning models. We are seeking a talented technical data analyst who can own this process end-to-end. A good candidate should be very comfortable manipulating large datasets with Pyspark in order to build efficient, incrementally loaded pipelines that are required by the scale of our data. The role also necessitates business acumen and technical scoping experience to be able to prioritize across a wide breadth of business needs. Candidates should feel comfortable with monitoring in-production data pipelines and promptly responding to issues that could impact in-production models. Lastly, candidates should be adept and passionate about teaching others in order to scale contributions to feature pipelines across the team.</li>
</ul>
Required Skills:
<ul>
<li>2+ years of experience with pyspark for enterprise-scale solutions</li>
<li>4+ years of experience with data modeling, e.g. as a technical analyst or data engineer</li>
<li>High proficiency in object-oriented programming in python, including classes and methods</li>
<li>Strong communication and collaboration skills with technical stakeholders</li>
<li>Comfort with monitoring in-production systems and debugging in high-pressure situations</li>
</ul>
Requirements:
<ul>
<li>BS or MS in an appropriate quantitative field (Computer Science, Statistics, Applied Math, Econometrics, Operations Research)</li>
<li>SQL</li>
<li>Data modeling</li>
</ul>
Benefits that Russell Tobin offers:
Russell Tobin offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), a 401(k)-retirement savings, life & disability insurance, an employee assistance program, identity theft protection, legal support, auto and home insurance, pet insurance, and employee discounts with some preferred vendors. 
#CB #LI-SA3
 
 Rate/Salary: $58-$68/hr. DOE

Position: Data AnalystLocation: Sunnyvale, California (Hybrid 2 days per week)Contract: 1 Year (Extension Likely)Pay Rate: $50-$60/HR DOE About the Role: A Cloud Data Analyst is responsible for collecting, processing, and analyzing large and complex datasets using cloud-based platforms and tools. The successful candidate will have a strong understanding of data warehousing, data modeling, and data visualization techniques, as well as experience with cloud computing platforms such as GCP, OCI, and/or AWS. Responsibilities: ● Design, build, and maintain scalable data pipelines and ETL processes using cloud-based technologies. ● Design & build feature-rich dashboards while utilizing Looker and other main tools such as Google DataStudio and Tableau. ● Work with business stakeholders to wireframe dashboards to convey detailed insights in the most compelling manner. ● Develop and implement data models to support data analysis and reporting. ● Use data visualization tools to create dashboards and reports that effectively communicate insights to stakeholders. ● Collaborate with cross-functional teams to gather requirements, define metrics, and deliver data-driven solutions. ● Troubleshoot and resolve data quality issues, ensuring data accuracy and integrity. ● Stay abreast of industry best practices and emerging technologies in cloud data analytics. ● Assist to streamline the processes of collecting, integrating, analyzing and conveying insights to improve business decision making Qualifications: ● Bachelor's or Master's degree in Computer Science, Statistics, Mathematics, or a related field. ● 5+ years of experience in data analysis, data engineering, or a related role. ● Strong SQL skills and experience with data warehousing concepts and technologies. ● Proficiency in at least one programming language such as Python or R. ● Experience with data visualization tools such as Tableau or Power BI. ● Excellent communication and problem-solving skills. Pride Global offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), 401(k)-retirement savings, life & disability insurance, an employee assistance program, legal support, auto, home insurance, pet insurance and employee discounts with preferred vendors.

Hello, We are looking for a talent to join our dynamic team with one of my clients. Title: Sr. Data EngineerLocation: Phoenix, AZDuration: Fulltime Required Job Skills:<ul><li>Intermediate skill in the use of office equipment, including copiers, fax machines, scanner and telephones</li><li>Intermediate PC proficiency in spreadsheet, database and word processing software</li><li>Advanced knowledge of business intelligence, programming, and data analysis software</li><li>Intermediate knowledge of Microsoft SQL databases and database administration </li><li>Intermediate proficiency in T-SQL, NZ-SQL, PostgreSQL, NoSQL, Hadoop, data tuning, enterprise data modeling and schema change management.</li><li>Working technical knowledge of current software protocols and Internet standards to the extent that they apply to database administration. </li><li>Excellent database troubleshooting skills </li><li>Working technical knowledge of PowerShell. </li><li>Strong object-oriented design and analysis skills </li><li>Experience consuming, organizing and analyzing JSON and XML messages as data. </li></ul> Required Professional Competencies;<ol><li>Knowledge of agile development practices </li><li>Strong analytical skills to support independent and effective decisions </li><li>Ability to prioritize tasks and work with multiple priorities, sometimes under limited time constraints. </li><li>Perserverance in the face of resistance or setbacks. </li><li>Effective interpersonal skills and ability to maintain positive working relationship with others. </li><li>Verbal and written communication skills and the ability to interact professionally with a diverse group, executives, managers, and subject matter experts. </li><li>Systems research and analysis. Ability to write and present business intelligence documentation </li><li>Demonstrate the ability to stay current on global threats and vulnerabilities. </li><li>Maintain confidentiality and privacy </li><li>Required Leadership Experience and Competencies </li><li>Build synergy with a diverse team in an ever changing environment. </li></ol> Preferred: <ul><li>Advanced knowledge of Data Integration</li><li>Advanced proficiency with relational technologies that supplement RDBMS tool sets </li><li>Advanced knowledge of Microsoft Applications and Suites, Windows Server, and Microsoft SQL databases. </li><li>Advanced knowledge of decision support systems </li><li>Advanced knowledge of Netezza administration </li><li>Advanced proficiency in TalenD Open Studio or Profisee Maestro Enterprise Data Warehouse (EDW) tools. </li><li>Minimum 1-2 Year Experience on Cloud computing, Azure preferable. </li><li>Experience supporting Spark-R and R</li><li>Intermediate knowledge in Python scripting</li><li>Knowledge of any of the common Hadoop Tools; such as, NIFI, Hive, Pig, Oozie, HBase, Flume, Sqoop, Yarn MapRecdce, Ambari, Spark, Java, Python, </li><li>Proficiency with agile development practices </li><li>Experience collecting and storing data from Restful API's </li></ul> Preferred Professional Competencies: <ul><li>Advanced systems research and analysis expertise </li><li>Solid technical ability and problem solving skills </li></ul> Preferred Leadership Experience and Competencies:<ul><li>Experience and knowledge in participating in a highly collaborative scrum team. </li><li>Experience in developing, maintaining and enhancing big data solutions.</li><li>Demonstrated experience and patience in mentoring and sharing knowledge with peers.</li></ul> Education:<ul><li>High-School Diploma or GED in general field of study Preferred Education </li><li>Bachelor’s Degree in Information Technology or related field preferred Preferred Certifications </li><li>MS SQL Certification or other certification in current programming languages Required Work Experience</li><li>4 years of experience in computer programming, query design, and databases Preferred Work Experience • </li><li>4+ years of experience building and managing complex Data Integration solutions. </li><li>4+ years of experience in computer programming, query design, and databases </li><li>4+ years of experience Database administration with SQL Server</li></ul>

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