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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

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 you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.

The company has been consistently growing new users in the city from January to March.

What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

Decreasing Comments

How would you investigate a decline in the average number of comments per user?

Precision solutions Salaries by Position

Overview: Junior Software EngineerOnsite | Ft. Meade | 5 Days a WeekActive TS/SCI w/FS Poly (NSA) Clearance Required Summary Since 2012, our client has helped mission-critical government organizations and businesses face their most daunting technology challenges. Their team have been trusted partners to many government agencies and are extremely familiar with a wide variety of systems, policies, and procedures. Our client is also a distinguished custom software development firm dedicated to delivering premium solutions tailored for businesses and governmental needs. They are home to top-tier technology professionals recognized as industry pioneers, comprehensive full-stack engineers, and reliable consultants. These experts are adept at clear communication, excel in resolving complex challenges where others may falter, and are skilled in actualizing an organization's vision. ResponsibilitiesOur client is looking for multiple Junior Software Engineers to join their team! As a Junior Software Engineer, you will embark on a journey of growth and learning in the field of software development. Your foundation in computer science, coupled with expertise in programming languages such as Java, Python, C++, Ruby, Perl, or JavaScript, will be crucial as you navigate through various development environments including Linux, Unix, and Windows. Your responsibilities will span across an array of exciting domains such as web application development, user interface development, and big data analytics, to name a few. With a passion for technology and an eagerness to dive into new programming languages and frameworks, you will contribute to our client's dynamic team and projects while building your skills in a collaborative and innovative environment. Please be aware that due to our client's involvement in a wide array of projects, this job description serves as a foundational outline meant to align with their broad requirements. The specifics of each project vary, offering a rich landscape of opportunities! Detailed information about individual projects will be disclosed during the subsequent stages of the interview process. Requirements<ul><li>0-7 years of software development experience in programming languages such as Java, Python, C++, Ruby, Perl, JavaScript is required</li><li>An additional 4+ years of relevant experience may be substituted in lieu of a degree</li><li>Familiarity with development environments in Linux, Unix, or Windows</li><li>Experienced in and/or excited to work in any of the following areas: <ul><li>Web application development</li><li>Distributed systems</li><li>User interface development</li><li>Big data analytics</li><li>Machine learning</li><li>Data science</li><li>Cloud-based computing</li><li>Reverse engineering</li><li>High-Performance Computing (HPC), or DevOps</li></ul></li><li>You have a passion for technology and the drive to learn new programming languages and frameworks</li></ul>Preferred Requirements<ul><li>We realize this is a long list of preferred various skills and experiences! - Dont worry if you arent familiar with all of these. Only having some exposure and knowledge of the following various technologies is acceptable!:<ul><li>Angular/AngularJS, Vue, CSS, HTML, React or equivalents for UI developers</li><li>Spring, Hibernate, JPA, Servlets or equivalents for Java developers</li><li>NoSQL technologies such as MongoDB, REDIS, Neo4J, Hbase, ElasticSearch, etc.</li><li>Relational Databases such as MySQL, Oracle, PostgreSQL</li><li>Developing RESTful Services using a framework such as Jersey, Spring MVC, CXF</li><li>Enterprise Integration Frameworks such as Apache Camel, Spring Integration, or Apache NiFi JMS to include messaging Frameworks such as Apache ActiveMQ, Apache Artemis, or Kafka</li><li>Spring to include Spring Boot, Spring Data, or Spring Security</li><li>Java Persistence API through a persistence framework such as Spring, Hibernate, OpenJPA</li><li>Developing and deploying applications to Servlet containers such as Tomcat or Jetty, or Application Servers such as Glassfish, JBoss, Weblogic</li><li>Applications with NodeJS</li><li>UI Component libraries such as Bootstrap, Material, Ant</li><li>Distributed computing frameworks such as Apache Spark, Hadoop, and MapReduce</li><li>Developing applications within utility clouds such as AWS, Rackspace, Heroku, or Azure</li><li>Continuous integration tools such as Gitlab CI or Jenkins</li><li>Containerization technologies such as Docker and Kubernetes</li><li>IDEs such as Eclipse, IntelliJ, or Microsoft Visual Studio</li></ul></li></ul>Education/Certification Requirements<ul><li>A Bachelor's degree in Computer Science or a related technical field is required. An additional 4+ years of relevant experience may be substituted in lieu of a degree</li></ul>Clearance Requirements<ul><li>Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; an active TS/SCI w/FS Poly clearance is required. Please note that the FS Poly currently needs to be held by the NSA or within the past two years. </li></ul><div>Other Duties</div><div>Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.</div><div> </div><div>--------------</div><div> </div><div>About Us</div><div>Northern Virginia-based Precision Solutions is an expert in staffing solutions for companies of any size that open the door to new opportunities and seek outstanding talent. We pride ourselves on being versatile enough to tailor our relationships to the needs of each individual client, being agile in the fast-paced marketplace, and being precise in meeting the needs of any company.</div><div> </div><div>Equal Opportunity Employer Statement</div><div>Precision Solutions is an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws.</div>

Precision solutions Interview Questions

Precision solutions Interview Guides

Precision solutions Interview Questions

Precision solutions Salaries by Position

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