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Dcs Corp Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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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?

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?

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

A/B Testing & Experimentation

<h3>Job Description</h3><div>Job Description<div>DCS Corporation has an immediate opening for a Mission Data (MD) Engineer supporting the US Reprogramming Lab (USRL) and 513th Electronic Warfare Squadron (EWS) at Eglin AFB, Florida. The mission of the USRL is to develop, test & produce combat credible Mission Data (MD) for the F-35 Joint Strike Fighter of the DOD: Air Force, Navy, Marine Corps. Our team at the USRL produces MD to defeat enemy threat systems in the Electro-Magnetic (EM) spectrum and enhance F-35 survivability in combat.Essential Job Functions:The MD Engineer will work with other members of the USRL team to develop state-of-the-art MD for the advanced 5th generation F-35 JSF. The ideal candidate’s responsibilities will include:MD development, MD Validation & Verification (V&V), Operational MD Assessment/Development/Testing.Conduct Intelligence research & analysis to develop and program complex MD files for the F-35 Electronic Warfare (EW) suite and enhance situational awareness for F-35 pilots.Design / develop complex EW models, programs, and automation tools to increase efficiency of MD Lab testing and analysis.Advise on RF components, characteristics, and antenna performance parameters to optimize MD programming efforts. Communicate detailed feedback (orally & written) from V&V analysis to support MD production and configuration management.Job Requirements:Due to the sensitivity of customer related requirements, U.S. Citizenship is required.Bachelor Degree in an Engineering / STEM discipline with eight (8) years of relevant experience.Electrical Engineering degree is preferred.Must be able to obtain a Secret security clearance and maintain throughout employment, Active Secret clearance highly desirable.Occasional travel 2-3 weeks / year.Desired Skills:Experience programming MD for 4th / 5th generation fighter aircraft.Experience with software applications to program and produce MD.Experience with V&V test plans and directing MD testing in a Lab setting.Proficient working knowledge of: CED, EWIRDB, NGES, SPECTRE & MATLAB.Proficient working knowledge of EW fundamentals & threat radar systems / parametrics.Familiarity with F-35 avionics & AESA generation radars.</div></div>

<h3>Job Description</h3><div>Job Description<div>Provide Advisory & Assistance Services (A&AS) to the United Operational Test Team (UOTT) and the Air Dominance Division shaping and managing the end-to-end data infrastructure and analytic processes that drive operational test and evaluation (OT&E). Activity will involve developing and overseeing data requirements, procedures, and governance building and maintaining analysis tools, managing test data, and producing high-impact technical deliverables. In addition, you will lead efforts to develop, coordinate, and sustain a unified data-analysis toolset across AFOTEC Detachment 6 sites, ensuring consistent and efficient analytics across the enterprise.Essential Job Functions:Primarily assist Operations and Data Analysts in managing and improving data workflows by organizing data, streamlining database processes, and optimizing tools on existing data infrastructures. Ensures efficient data movement between test sites. Supervises and monitors the technical deployment of data analysis networks, troubleshooting issues and ensuring alignment with data analysis requirements. Identifies and addresses potential bottlenecks in data analysis network performance and collaborate with cyber security and network engineering teams to integrate new software and procedures to improve data processes.Required Skills:Due to the sensitivity of customer related requirements, U.S. Citizenship is required.High School diploma/GED and 13 years of relevant data analysis experience, an Associate's degree plus 7 years, or a Bachelor’s degree plus 5 years of relevant experience.Active Top Secret security clearance required.Technical Skills:Proficiency in SQL for data querying and manipulation.Experience with Microsoft SQL Server, PostgreSQL, Apache Spark and Hadoop for processing large datasets.Proficiency in Python and VBA for data analysis, scripting, automation, and reporting dashboard tools.Operational Test & Domain Knowledge:Minimum of 5 years of experience in Air Force or Navy operations and tactics.Demonstrated knowledge of fighter aircraft and operational testing methodologies.Familiarity with Air Force Instructions (AFIs), AFMAN 91-201, DoDI 6055.9, and other applicable instructions and standards related to operational testing.Ability to create and execute data management strategies that align with Operational Test analysis requirements.Documentation & Communication:Experience developing test plans, test reports, and other formal technical documents.Strong written and verbal communication skills.Experienced in leadership and management, essential for collaborating with teams and stakeholders.</div></div>

<h3>Job Description</h3><div>Job Description<div>The Software Engineer/Computer Scientist shall support the Air Force Seek Eagle Evaluation of Compatibility and Technical Advisory process by contributing to modeling and simulation activities and evaluating aircraft/store configurations to determine aircraft performance and dynamic response. This position will require a substantial amount of software development, maintenance, and upgrade to support aerospace engineering tools.Essential Job Functions:The work performed will be in direct support to the Air Force Seek Eagle Program. The ideal candidate will be a strong team player with excellent communication skills familiar with software development and aircraft flight mechanics. This position will require collaborative work with contractor and government personnel in a mixed badge environment.The ideal candidate will have the ability to broadly apply engineering principles systematically within various coding environments.Produce and maintain algorithms and tools developed specifically for aeronautical simulations.Required Skills:Due to the sensitivity of customer related requirements, U.S. Citizenship is required.Bachelor's degree in Software Engineering/Computer Scientist or a degree in Aeronautical, Aerospace, or Mechanical Engineering plus 3 years of directly related experience OR a Master's degree in Software Engineering/Computer Scientist or a degree in Aeronautical, Aerospace, or Mechanical Engineering plus 2 years of directly related experience (Master's highly desired).Must be able to obtain a DoD SECRET Security Clearance.General knowledge and experience in the fields of aerospace engineering including structural dynamics, and aerodynamics. Familiarity with aeroelasticity is a plus.Experience with writing and modifying aircraft flight simulation software using Python, MATLAB or similar.Data analysis and visualization experience – Pandas, Matplotlib, MATLAB.Desired Skills:Proficiency using finite element analysis tools such as NASTRAN.Experience with application development with GUI libraries – Qt, PyQt.Experience with version control systems (Git/Azure DevOps).Experience in Windows and Linux/Unix environments using HPC systems, shell scripting (Windows, Python, Perl, etc.).Ability to support legacy software including Visual Basic, Fortran, C++, and Perl.Experience using CFD codes, is desired.</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

Dcs Corp Interview Questions

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