Prepare for and practice interview questions from Quevera.

Quevera Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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<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?

<p>You are testing hundreds of hypotheses with many <em>t</em>-tests. What considerations should be made?</p>


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

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?

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


<p>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?</p>

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

A/B Testing & Experimentation

<h3>Job Description</h3><div>Job Description<div><div><div><div><div><div><div><div><div><div><div><div><p><strong>Job Description:</strong></p><p>Quevera is seeking a <strong>Software Engineer</strong><strong> </strong>to join our team. At Quevera, we don’t just offer jobs—we provide opportunities to be part of a dynamic, forward-thinking community that fosters innovation, collaboration, and personal growth. You’ll work with industry experts, take on exciting challenges, and have the creative freedom to build cutting-edge solutions, all while advancing your career in a space that truly values your skills and ideas.</p><p>HIGHLIGHT'S OF WORKING FOR QUEVERA:</p><p>Quevera employees voted Quevera as a TOP EMPLOYER in the Baltimore /DC area by the Washington for 2025 for the 5th consecutive year!</p><p>Excellent Quevera's Benefits:</p><p><span class="long-word">Medical/Dental/Vision</span> (<strong>100% Employer Paid Medical Plan</strong>)</p><p>Short/Long Term Disability (Employer Paid)</p><p>Life Insurance (<strong>Employer Paid</strong>)</p><p>Yearly $5,000 towards <span class="long-word">education/training/certification.</span></p><p>Employees are in control of their career path through our <em>Career Pathway Program</em>.</p><p><strong>Employer paid <em>Company Vacation Package for you and a guest</em>! </strong></p><p>Retirement: <strong>Quevera will match up to 6% towards your 401K and an additional 4% profit sharing!</strong></p><p><strong>REQUIRED - MUST have a current TS/SCI Polygraph clearance to</strong> <strong>apply for role. Only those with a current TS/SCI with Poly clearance will be considered.</strong></p><p><strong>Duties and Responsibilities:</strong></p><p>Work in an environment where you can design the architecture and develop solutions to meet the organization’s needs while enhancing your skillset and advancing your career. Looking for an innovative, and motivated individual to join a small, talented, and hardworking Linux team in a hybrid cloud environment. This team creates, maintains, and troubleshoots Linux instances on multiple networks, in multiple architectures.The ideal candidate will have hands-on Python scripting experience, Linux administration experience, knowledge of AWS Cloud technologies are a plus. Candidate must work well in a small team setting, have a desire to automate processes where possible, and a willingness to think outside the box to find solutions.</p><p><br /></p><p><strong>Required Experience:</strong></p><p><strong> Seven (7) years experience as a SWE, in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required. Four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor’s degree. Certifications: Compliance with DoD 8570.01-M with a minimum certification of IAM Level I (CAP, CND, Cloud+, GSLC, Security+ CE, HCISPP)</strong></p><div> Recent, relevant, and demonstrable experience with Python.</div><div> Ability to create Python scripts from scratch as well as modify existing scripts.</div><div> Experience with automating repetitive tasks with Bash and Python scripts</div><div> Self-motivated and willing to learn new technologies</div><div> Ability to communicate issues with team members and/or service owners</div><div><strong>Desired Experience:</strong><br /></div><div> Experience performing Linux server administration tasks including configuring, patching, monitoring, trouble shooting, etc.</div><div> Experience with Puppet and Ansible</div><div> Experience with AWS EC2 Auto Scaling</div><div> Experience with aws-cli and boto3</div><div><br /></div><p>Quevera is an equal opportunity employer and does not discriminate on the basis of any legally protected status or characteristic. Protected veterans and individuals with disabilities are encouraged to apply. #LI-AA1</p></div></div></div></div></div></div></div></div></div></div></div></div></div>

<h3>Job Description</h3><div>Job Description<div><div><div><div><div><div><p><br /></p><p><strong>Job Description:</strong></p><p></p><p>Quevera is seeking a <strong>Software Engineer</strong> to join our team. At Quevera, we don’t just offer jobs—we provide opportunities to be part of a dynamic, forward-thinking community that fosters innovation, collaboration, and personal growth. You’ll work with industry experts, take on exciting challenges, and have the creative freedom to build cutting-edge solutions, all while advancing your career in a space that truly values your skills and ideas.</p><p>HIGHLIGHT'S OF WORKING FOR QUEVERA:</p><p>Quevera employees voted Quevera as a TOP EMPLOYER in the Baltimore /DC area by the Washington for 2025 for the 5th consecutive year!</p><p>Excellent Quevera's Benefits:</p><p><span class="long-word">Medical/Dental/Vision</span> (<strong>100% Employer Paid Medical Plan</strong>)</p><p>Short/Long Term Disability (Employer Paid)</p><p>Life Insurance (<strong>Employer Paid</strong>)</p><p>Yearly $5,000 towards <span class="long-word">education/training/certification.</span></p><p>Employees are in control of their career path through our <em>Career Pathway Program</em>.</p><p><strong>Employer paid <em>Company Vacation Package for you and a guest</em>! </strong></p><p>Retirement:</p><p><strong>Quevera will match up to 6% towards your 401K and an additional 4% profit sharing!</strong></p><p><strong>REQUIRED - MUST have a current TS/SCI Polygraph clearance to</strong> <strong>apply for role. Only those with a current TS/SCI with Poly clearance will be considered.</strong></p><p></p><p><strong>Required Experience:</strong></p><p>• Experienced with using TypeScript JavaScript language</p><p>• Experienced in using Angular Framework to develop user interfaces</p><p>• Experienced with analyzing json data structure when working with the ReST</p><p>• Experienced with Cascading Style Sheets (CSS) to enhance the look and feel of user interface</p><p><strong>Desired Experience:</strong></p><p>• Jira</p><p>• Confluence</p><p>• Agile Framework / SAFe</p><p>• AWS</p><p>• Balsamiq</p><p>• MongoDB</p><p>Quevera is an equal <span class="long-word">opportunity/affirmative</span> action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age or any other characteristic protected by law. #LI-AA1 </p><p><br /></p></div></div></div></div></div></div></div>

<h3>Job Description</h3><div>Job Description<div><div><div><div><div><div><div><p><strong>Job Description:</strong></p><p>Quevera is seeking a <strong>Software Engineer </strong>to join our team. At Quevera, we don’t just offer jobs—we provide opportunities to be part of a dynamic, forward-thinking community that fosters innovation, collaboration, and personal growth. You’ll work with industry experts, take on exciting challenges, and have the creative freedom to build cutting-edge solutions, all while advancing your career in a space that truly values your skills and ideas.</p><p>HIGHLIGHT'S OF WORKING FOR QUEVERA:</p><p>Quevera employees voted Quevera as a TOP EMPLOYER in the Baltimore /DC area by the Washington for 2025 for the 5th consecutive year!</p><p>Excellent Quevera's Benefits:</p><p><span class="long-word">Medical/Dental/Vision</span> (<strong>100% Employer Paid Medical Plan</strong>)</p><p>Short/Long Term Disability (Employer Paid)</p><p>Life Insurance (<strong>Employer Paid</strong>)</p><p>Yearly $5,000 towards <span class="long-word">education/training/certification.</span></p><p>Employees are in control of their career path through our <em>Career Pathway Program</em>.</p><p><strong>Employer paid <em>Company Vacation Package for you and a guest</em>! </strong></p><p>Retirement: <strong>Quevera will match up to 6% towards your 401K and an additional 4% profit sharing!</strong></p><p><strong>REQUIRED - MUST have a current TS/SCI Polygraph clearance to</strong> <strong>apply for role. Only those with a current TS/SCI with Poly clearance will be considered.</strong></p><p><strong> Duties and Responsibilities:</strong></p><p><strong>Work in an environment where you can design the architecture and develop solutions to meet the organization’s needs while enhancing your skillset and advancing your career. Looking for an innovative, and motivated individual to join a small, talented, and hardworking Linux team in a hybrid cloud environment. This team creates, maintains, and troubleshoots Linux instances on multiple networks, in multiple architectures.The ideal candidate will have hands-on Python scripting experience, Linux administration experience, knowledge of AWS Cloud technologies are a plus. Candidate must work well in a small team setting, have a desire to automate processes where possible, and a willingness to think outside the box to find solutions.</strong></p><p><strong>Required Experience:</strong></p><p><strong> Seven (7) years experience as a SWE, in programs and contracts of similar scope, type, and complexity is required. Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required. Four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor’s degree. Certifications: Compliance with DoD 8570.01-M with a minimum certification of IAM Level I (CAP, CND, Cloud+, GSLC, Security+ CE, HCISPP)</strong></p><div> Recent, relevant, and demonstrable experience with Python.</div><div> Ability to create Python scripts from scratch as well as modify existing scripts.</div><div> Experience with automating repetitive tasks with Bash and Python scripts</div><div> Self-motivated and willing to learn new technologies</div><div> Ability to communicate issues with team members and/or service owners</div><p><br /></p><p><strong>Desired Skills:</strong></p><div> Experience performing Linux server administration tasks including configuring, patching, monitoring, trouble shooting, etc.</div><div> Experience with Puppet and Ansible</div><div> Experience with AWS EC2 Auto Scaling</div><div> Experience with aws-cli and boto3</div><p><br /></p><p>Quevera is an equal opportunity employer and does not discriminate on the basis of any legally protected status or characteristic. Protected veterans and individuals with disabilities are encouraged to apply. #LI-AA1</p></div></div></div></div></div></div></div></div>

<h3>Job Description</h3><div>Job Description<div><div><div><div><p>Quevera is seeking a <strong>Cloud Software Engineer</strong> to install, configure, test, and administer large clustered systems utilizing cloud technologies such as COPILOT, ACCUMULO, PIG/PIGLET, SPARK, and Hadoop. In this role you will work on integrating and developing solutions for <span class="long-word">encryption/decryption</span> services and managing Big Data in a cloud environment. Your expertise in technologies like Hadoop, MapReduce, and NoSQL (HBase, Accumulo) will be key to optimizing distributed systems. This role requires a TS/SCI FSP and resides in Ft. Meade MD. </p><p></p><p><strong>What you will do: </strong></p><p>Administer and sustain operating systems and software for large cloud-based systems.</p><p>Develop, integrate, and test software to provide <span class="long-word">encryption/decryption</span> services within a cloud environment.</p><p>Work with Hadoop (HDFS, MapReduce), Pig, and Hive to process and manage large datasets.</p><p>Integrate cloud components with IC GovCloud services, ensuring high availability and scalability.</p><p>Work with NoSQL technologies such as HBase and Accumulo to support Big Data storage and processing.</p><p>Design and develop Object-Oriented systems, focusing on performance and scalability.</p><p></p><p><strong>What you bring: </strong></p><p>6+ years of experience with Java programming language.</p><p>Bachelor’s degree in Computer Science or related field (or 4+ years of equivalent experience).</p><p>Hands-on experience with Hadoop, Spark, Hive, and MapReduce programming.</p><p>Strong experience in developing solutions with NoSQL databases (HBase, Accumulo, MongoDB).</p><p>Experience deploying applications in a cloud environment and understanding cloud scalability.</p><p>Expertise in data serialization formats like JSON and BSON.</p><p>Hadoop Cloud Certification and experience with Apache Nifi. (preferred) </p><p>Experience in developing and deploying automated analytics and data-driven software solutions. (preferred) </p><p></p><p><strong>Why Quevera? </strong></p><p>Innovative Environment: Work with the latest technology and cutting-edge tools in a collaborative and forward-thinking environment.</p><p>Impactful Work: Your contributions will have a direct impact on the success of developmental and operational systems.</p><p>Growth Opportunities: We invest in our employees’ growth through training, certifications, and career development opportunities.</p><p>Dynamic Team: Join a team of talented professionals dedicated to innovation, excellence, and continuous improvement.</p><p>Exceptional benefits honoring <strong>EXCEPTIONAL</strong> people. </p><p><br /></p><p>Quevera is an equal opportunity employer and does not discriminate on the basis of any legally protected status or characteristic. Protected veterans and individuals with disabilities are encouraged to apply. #LI-AA1</p></div></div></div></div></div>

<h3>Job Description</h3><div>Job Description<div><div><div><div><p><br /></p><p><strong>Job Description:</strong></p><p></p><p>Quevera is seeking a <strong>Data Scientist 3</strong> to join our team. At Quevera, we don’t just offer jobs—we provide opportunities to be part of a dynamic, forward-thinking community that fosters innovation, collaboration, and personal growth. You’ll work with industry experts, take on exciting challenges, and have the creative freedom to build cutting-edge solutions, all while advancing your career in a space that truly values your skills and ideas.</p><p>HIGHLIGHT'S OF WORKING FOR QUEVERA:</p><p>Quevera employees voted Quevera as a TOP EMPLOYER in the Baltimore /DC area by the Washington for 2025 for the 5th consecutive year!</p><p>Excellent Quevera's Benefits:</p><p><span class="long-word">Medical/Dental/Vision</span> (<strong>100% Employer Paid Medical Plan</strong>)</p><p>Short/Long Term Disability (Employer Paid)</p><p>Life Insurance (<strong>Employer Paid</strong>)</p><p>Yearly $5,000 towards <span class="long-word">education/training/certification.</span></p><p>Employees are in control of their career path through our <em>Career Pathway Program</em>.</p><p><strong>Employer paid <em>Company Vacation Package for you and a guest</em>! </strong></p><p>Retirement:</p><p><strong>Quevera will match up to 6% towards your 401K and an additional 4% profit sharing!</strong></p><p><strong>REQUIRED - MUST have a current TS/SCI Polygraph clearance to</strong> <strong>apply for role. Only those with a current TS/SCI with Poly clearance will be considered.</strong></p><p></p><p><strong>Required Experience:</strong></p><p>• Experience with AI/ML RMF SSP authorization</p><p>• Experience with AI/ML services contract and configurations</p><p>• Experience with AI/ML request security review</p><p>• 10 years of experience analyzing datasets and developing analytics, and 10 years of experience programming </p><p>with data analysis software such as R, Python, SAS, or MATLAB.</p><p><strong> </strong></p><p>Quevera is an equal <span class="long-word">opportunity/affirmative</span> action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age or any other characteristic protected by law. #LI-AA1 </p><p><br /></p></div></div></div></div></div>

Question	Topic	Difficulty	Ask Chance
Boarding Times Bias	Statistics	Medium	Very High
Hundreds of Hypotheses	Statistics	Medium	Very High
Random Bucketing	A/B Testing & Experimentation	Medium	Very High

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