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Gama-1 Technologies Interview Questions

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<p>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.</p>

<p>How would you assess the validity of the result?</p>


Experiment Validity

<p>Let’s say we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.</p>

<p>Write a query to randomly sample a row from this table.</p>

<p><strong>Input:</strong></p>

<p><code>big_table</code> table</p>

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>


Write a query to randomly sample a row from a big table.

Random SQL Sample

<p>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.</p>

<p>What factors could have biased this result, and what would you look into?</p>


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

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?

Gama-1 Technologies Salaries by Position

<h3>Job Description</h3><div>Job Description<div><p>GAMA-1 Technologies, LLC is seeking a remote experienced and highly motivated Cloud Big Data Expert with experience in AWS and data lake technologies to join our team. . In this role, the successful candidate will be instrumental in driving GAMA-1's efforts to support cloud initiatives for the National Oceanic and Atmospheric Administration (NOAA) and National Environmental Satellite, Data, and Information Service (NESDIS) with a focus on architecting and provisioning enterprise-level Cloud services, including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS)</p>The ideal candidate will have a strong background in big data analytics, data engineering, and cloud computing, with a focus on building and optimizing data lakes on AWS. The Cloud Big Data Expert plays a crucial role in designing, implementing, and managing advanced data solutions using both AWS and Data Lakehouse platforms. This position requires a blend of skills in cloud computing, data engineering, and analytics. Responsible for optimizing performance, ensuring security and compliance, and providing support and troubleshooting. Collaboration with data scientists and analysts is also key, ensuring the platform meets analytics needs while staying updated with the latest technologies and practices in the field. <br /> <br /><b>Responsibilities:</b> <ul><li>Design and implement scalable and efficient data pipelines using AWS and Data Lakehouse Platform services. Leverage AWS cloud services like S3, Kinesis, Redshift, EMR, Glue, Lambda, and others in combination with Data Lakehouse platform/Apache Spark Integration for advanced data processing and analytics. Collaborate with cross-functional teams to understand business needs and translate them into technical solutions. Utilize Databricks for big data processing and streaming analytics. </li><li>Develop and maintain data lakes and data warehouses on AWS and Data Lakehouse Platform, ensuring data integrity and accessibility. Optimize data storage and processing for performance and cost efficiency. Automate data workflows and ensure high data quality and reliability. Monitor, troubleshoot, and resolve data pipeline issues. </li><li>Organizing and managing data within the environment, ensuring it is stored efficiently, securely, and in a manner that supports easy access and analysis. Monitor the performance of data processes and queries and optimize efficiency and speed. </li><li>Ensure high standards of data quality and implement data governance practices. Stay current with emerging trends and technologies in cloud computing, big data, and data engineering. </li><li>Provide ongoing support for the platform, troubleshoot any issues that arise, and ensure high availability and reliability of data infrastructure. </li><li>Create documentation for the platform infrastructure and processes, and train other team members or users on the platform effectively. </li><li>Setup configure, implement, and maintain the data lake and respective tools. </li></ul><b>Qualifications:</b> <ul><li>5 years’ experience in big data analytics, data engineering, or related roles </li><li>Experience in designing, building, and maintaining data warehouses. Understanding of data modeling, data warehousing, and data lake concepts. </li><li>Proficiency in programming languages such as Python, Java, Scala, and scripting languages like Bash or PowerShell. </li><li>Experience with big data technologies, such as Apache Hadoop, Spark, Kafka, and others. </li><li>Hands-on experience with AWS services such as S3, Glue, Redshift, EMR, Athena, etc. </li><li>Proficiency in SQL and experience with relational databases. </li><li>Experience in building and optimizing big data pipelines, architectures, and data sets. </li><li>Familiarity with ETL tools, processes, and data integration techniques. </li><li>Excellent communication and team collaboration skills.</li><li>AWS Certification</li><li>Must be able to obtain a security clearance</li></ul> <br /><b>Education and Experience:</b><ul><li>BS in Computer Science, IT, Software or Computer Engineering, Data Science or Analytics, Mathematics or related field </li></ul><p></p><p></p><p>ABOUT GAMA-1</p><p>GAMA-1 is a rapidly growing technology business that is based in Greenbelt, Maryland. GAMA-1 Technologies provides strategic information assurance, information security, and business enterprise and networking solutions to the Federal Government. Our success is based on the utilization of industry and agency standards, establishment of standardized processes, and IT Services expertise. At GAMA-1, we believe employees should grow, achieve, and develop just as the company grows, achieves, and develops. GAMA-1 is committed to providing our employees with opportunities for career advancement throughout their employment. For more information, visit www.gama1tech.com</p><p>GAMA-1 is an Equal Opportunity Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.</p></div></div>

<h3>Job Description</h3><div>Job Description<div><p>GAMA-1 is seeking qualified remote scientific programmer and software engineer candidates to support NOAA’s Application and Science Common Services Support (ASCSS). ASCSS specializes in transitioning science software from research to operations. Once operational, the software will process large amounts of input data from satellites and dozens of operational datasets maintained by NOAA, NASA, and other international weather agencies. The integration team within ASCSS must review algorithm software, ensure they meet coding and security standards, identify optimizations necessary for operations, and test that all necessary algorithm functionality is operationally ready. This requires our team to maintain a close relationship with researchers so that we understand the algorithm interfaces and are prepared to support all the necessary communication of data from the system into the algorithm.</p><p></p><p>Responsibilities</p><p>· Provides programming support for the next generation NOAA weather satellites using industry standard software engineering techniques. Support science algorithm integration and research-to-operation efforts for transitioning new and legacy scientific software applications, to run in new ground systems</p><p>· Update code (refactor, debug, port, optimize) to work within NESDIS ground processing systems and to meet coding standards and processing efficiency.</p><p>· Interact with science teams to understand requirements, identify improvements and optimize complex algorithm code such that quality software will be deployed operationally</p><p>· Prepare and package integrated algorithm code for delivery</p><p>Qualifications</p><ul><li>· 4+ years of experience in Fortran, C/C++ and knowledgeable in good programming practices</li><li>· 2+ years of experience in Python</li><li>· Experience with code development in Linux platform</li><li>· Highly skilled at finding, identifying the cause of, and resolving bugs and anomalies</li><li>· Excellence in developing or integrating scientific codes</li><li>· Ability to handle multiple projects at a time</li><li>· Willingness to learn new tools as demand arises</li><li>· Teamwork and strong interpersonal skills</li><li>· Must be able to get a security clearance</li></ul><p></p><p>Desired Skills:</p><ul><li>· Experience working using Satellite, Weather Station, Radiosonde, Radar, and Paleoclimate datasets, highly desired</li><li>· Experience with interoperability between Fortran 90/95 and C/C++</li><li>· Knowledgeable in Optimization techniques to improve the code performance and speed</li><li>· Familiarity with CM tool such as Git</li><li>· Experience with real-time and off-line processing of satellite data, science algorithm integration</li><li>· Experience in container operations (preferably Docker) and orchestration (Kubernetes)</li></ul><p></p><p>Education:</p><p>BS degree or higher with formal course work in physics/ mathematics/ computer programming/ remote sensing</p><p>ABOUT GAMA-1</p><p>GAMA-1 is a rapidly growing technology business that is based in Greenbelt, Maryland. GAMA-1 Technologies provides strategic information assurance, information security, and business enterprise and networking solutions to the Federal Government. Our success is based on the utilization of industry and agency standards, establishment of standardized processes, and IT Services expertise. At GAMA-1, we believe employees should grow, achieve, and develop just as the company grows, achieves, and develops. GAMA-1 is committed to providing our employees with opportunities for career advancement throughout their employment. For more information, visit www.gama1tech.com</p><p>GAMA-1 is an Equal Opportunity Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.</p></div></div>

<p>GAMA-1 Technologies, LLC is seeking a remote experienced and highly motivated Cloud Big Data Expert with experience in AWS and data lake technologies to join our team. In this role, the successful candidate will be instrumental in driving GAMA-1's efforts to support cloud initiatives for the National Oceanic and Atmospheric Administration (NOAA) and National Environmental Satellite, Data, and Information Service (NESDIS) with a focus on architecting and provisioning enterprise-level Cloud services, including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).
The ideal candidate will have a strong background in big data analytics, data engineering, and cloud computing, with a focus on building and optimizing data lakes on AWS. The Cloud Big Data Expert plays a crucial role in designing, implementing, and managing advanced data solutions using both AWS and Data Lakehouse platforms. This position requires a blend of skills in cloud computing, data engineering, and analytics. Responsibilities include optimizing performance, ensuring security and compliance, and providing support and troubleshooting. Collaboration with data scientists and analysts is also key, ensuring the platform meets analytics needs while staying updated with the latest technologies and practices in the field.
Responsibilities: Design and implement scalable and efficient data pipelines using AWS and Data Lakehouse Platform services. Leverage AWS cloud services like S3, Kinesis, Redshift, EMR, Glue, Lambda, and others in combination with Data Lakehouse platform/Apache Spark Integration for advanced data processing and analytics. Collaborate with cross-functional teams to understand business needs and translate them into technical solutions. Utilize Databricks for big data processing and streaming analytics.
Develop and maintain data lakes and data warehouses on AWS and Data Lakehouse Platform, ensuring data integrity and accessibility. Optimize data storage and processing for performance and cost efficiency. Automate data workflows and ensure high data quality and reliability. Monitor, troubleshoot, and resolve data pipeline issues.
Organize and manage data within the environment, ensuring it is stored efficiently, securely, and in a manner that supports easy access and analysis. Monitor the performance of data processes and queries and optimize efficiency and speed.
Ensure high standards of data quality and implement data governance practices. Stay current with emerging trends and technologies in cloud computing, big data, and data engineering.
Provide ongoing support for the platform, troubleshoot any issues that arise, and ensure high availability and reliability of data infrastructure.
Create documentation for the platform infrastructure and processes, and train other team members or users on the platform effectively.
Set up, configure, implement, and maintain the data lake and respective tools.
Qualifications: 5 years’ experience in big data analytics, data engineering, or related roles.
Experience in designing, building, and maintaining data warehouses. Understanding of data modeling, data warehousing, and data lake concepts.
Proficiency in programming languages such as Python, Java, Scala, and scripting languages like Bash or PowerShell.
Experience with big data technologies, such as Apache Hadoop, Spark, Kafka, and others.
Hands-on experience with AWS services such as S3, Glue, Redshift, EMR, Athena, etc.
Proficiency in SQL and experience with relational databases.
Experience in building and optimizing big data pipelines, architectures, and data sets.
Familiarity with ETL tools, processes, and data integration techniques.
Excellent communication and team collaboration skills.
AWS Certification.
Must be able to obtain a security clearance.
Education and Experience: BS in Computer Science, IT, Software or Computer Engineering, Data Science or Analytics, Mathematics or related field.
ABOUT GAMA-1
GAMA-1 is a rapidly growing technology business that is based in Greenbelt, Maryland. GAMA-1 Technologies provides strategic information assurance, information security, and business enterprise and networking solutions to the Federal Government. Our success is based on the utilization of industry and agency standards, establishment of standardized processes, and IT Services expertise. At GAMA-1, we believe employees should grow, achieve, and develop just as the company grows, achieves, and develops. GAMA-1 is committed to providing our employees with opportunities for career advancement throughout their employment. For more information, visit www.gama1tech.com.
GAMA-1 is an Equal Opportunity Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.

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Gama-1 Technologies Interview Questions

Gama-1 Technologies Interview Guides

Gama-1 Technologies Interview Questions

Gama-1 Technologies Salaries by Position

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