Prepare for and practice interview questions from Kbr, Inc..

Kbr, Inc. Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

Kbr, Inc. Interview Guides

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

<h5>Operations Research Analyst </h5>KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country's most critical role protecting our national security. Why Join Us? <ul> <li>Innovative Projects: KBR's work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions. </li><li>Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace. </li><li>Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense. </li></ul> The successful candidate will be part of the KBR team supporting the Test Resource Management Center's (TRMC) Big Data (BD) and Knowledge Management (KM) Team working on BD and KM systems supporting DoD Test Ranges and various acquisition programs. The successful candidate will support our customers with insights gained from analyzing DoD Test & Evaluation data. The ideal candidate is adept at collaborating with technical and non-technical stakeholders to identify analytic requirements and analysis questions that can be informed through the aggregation and analysis of large data sets collected during test events or exercises. The candidate should be skilled at identifying opportunities for process or workflow optimization. The candidate should have experience using a variety of methods and models to test the effectiveness of different courses of action. They must have strong experience using a variety of data mining and data analysis methods, accessing data stored in a variety of data storage paradigms, developing models using common statistical and machine learning modeling approaches, using and creating custom algorithms, implementing analysis workflows in Python or R, and writing reports and documentation. They must have a proven ability to drive decisions through the successful communication, in written or presented form, of their data-based insights. They must be comfortable working with a wide range of stakeholders and functional teams. Candidates should have a passion for discovering insights hidden in large data sets and working with stakeholders to improve business outcomes through the delivery of high-quality products. The successful candidate will have extensive technical expertise in methods from operations research, experience working on Department of Defense problems, and excellent communication skills. Roles and Responsibilities: <ul> <li>As an Operations Research Analyst, you will be a critical part of the team that is responsible for enabling the development of data-driven decision analysis products through the innovative application, and promotion, of novel methods from data science, machine learning, and operations research in order to provide robust and flexible testing and evaluation capabilities to support DoD modernization. </li><li>You will be part of a technical team responsible for providing analytic consulting services, supporting analytic workflow and product development and testing, promoting the user adoption of methods and best practices from data science, conducting applied methods projects, and supporting the creation of analysis-ready data. </li><li>When supporting at sites, you will be the face of the CHEETAS Team and will be responsible for ensuring stakeholders have the analytical tools, data products and reports they need to make insightful recommendations based on your data driven analysis. </li><li>You will be directly assisting both analyst / technical and non-analyst / non-technical stakeholders with the analysis of DoD datasets and demonstrating the 'art of the possible' to the stakeholders and VIPs with insights gained from your analysis of DoD Test and Evaluation (T&E) data. </li><li>As such this position requires the ability to effectively communicate at both a programmatic and technical level. </li><li>Although you potentially may be the only team member physically on-site supporting you will not be alone. </li><li>You will have reach-back support from the software engineering, data science and system administration teams. While onsite, you will be responsible for running and operating CHEETAS (and other tools); demonstrating these tools to stakeholders & VIPs; conveying analysis results; adapting internally-developed tools, notebooks and reports to meet emerging needs; gathering use cases, requirements, gaps and needs from stakeholders and for larger development items providing that information as feature requests or bug reports to the CHEETAS development team; and performing impromptu hands-on training sessions with end users and potentially troubleshooting problems from within closed networks without internet access (with support from distributed team members). Successful candidates must be self-motivated and capable of working independently with little supervision / direct tasking. Operations Analysts with 5+ years of DoD experience are welcome to apply however our preference is for candidates with 10+ years of DoD experience. </li><li>This position will require travel of 25% with potential surge to 50% to support end users located at various DoD ranges & labs located across the US (including Alaska and Hawaii). When not supporting a site, this position can work remotely or from a nearby KBR office (if available and desired). Come join the ITEA award winning TRMC BDKM team and be a part of the team responsible for revolutionizing how data analysis is performed across the entire Department of Defense! </li></ul> Basic Qualifications: <ul> <li>Active TS/SCI clearance </li><li>This position requires an advanced degree in operations research, engineering, applied math, statistics, computer science or information technology with preferred 10+ years of experience within DoD. Candidates with 5-10 years of DoD experience will be considered on a case-by-case basis. </li><li>Previous experience should include working with end users, gathering requirements and refining/operating data analysis tools or products to meet user needs. </li><li>Previous experience should include developing and interpreting the results of analytic products with DoD specific data types. </li></ul> Knowledge / Skills / Abilities: <ul> <li>Experience using scripting languages (Python and R) to process, analyze and visualize data. </li><li>Experience using notebooks (Jupyter Notebooks and RMarkdown) to create reproducible and explainable products. </li><li>Experience using interactive visualization tools (RShiny, pyShiny, Dash) to create interactive analytics. </li><li>Experience generating and presenting reports, visualizations and findings to customers. </li><li>Experience using analysis methods, including supervised and unsupervised methods, to work with time series and geospatial data. </li><li>Experience working with Windows, Linux, and containers. </li><li>Experience querying databases using SQL. </li><li>Ability to make insightful recommendations based on data driven analysis and customer interactions. </li><li>Ability to effectively communicate both orally and in writing with customers and teammates. </li><li>Ability to speak and present findings in front of large groups. </li><li>Ability to document and repeat procedures. </li><li>Ability to train novice end users on the use of tools. </li><li>Should be self-motivated to design, develop, enhance, reengineer or integrate software applications to improve the quality of data outputs available for end users. </li></ul> Preferred Qualifications: <ul> <li>Experience as a military ORSA. </li><li>Experience working in government / defense labs and within their computing restrictions. </li><li>Knowledge of military force structure and/or tactical messaging. </li><li>Experience working with major DoD experimentation events, such as Joint All-Domain Command and Control (JADC2) events. </li><li>Experience working with major DoD acquisition programs, such as Joint Strike Fighter (JSF). </li><li>Knowledge of the Test and Training Enabling Architecture (TENA), the Joint Mission Environment Testing Capability (JMETC) and distributed testing and training. </li><li>Knowledge of DoD cybersecurity policies. </li></ul> Belong, Connect and Grow at KBR At KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team's philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver Together. KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.

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

Kbr, Inc. Interview Questions

Kbr, Inc. Interview Guides

Kbr, Inc. Interview Questions

Kbr, Inc. Opening Jobs