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Qinetiq 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

Package: Competitive Salary + Benefits Role ID: SF19117 Are you ready to be part of the future? At QinetiQ, we’re not just imagining tomorrow we are creating it. From cutting-edge defence technology to ground-breaking innovations our mission is to empower and protect lives. Join us as a Senior Software Engineer at our Bristol site, where you will have the opportunity to work with cutting-edge technology in partnership with some of the most brilliant minds. The Role As a Senior Software Engineer, your primary responsibility will be to design and oversee the integration of Commercial Off-The-Shelf (COTS) and in-house developed software. Day-to-day, you’ll play a critical role in implementing architectural patterns to ensure seamless integration, scalability, maintainability, and overall system performance, with your expertise driving the success of our software integration efforts and contribute to the overall success of the programme. Your Responsibilities Will Include <ul><li>Architect and design the integration strategy and solutions for COTS and in-house developed software applications.</li><li>Collaborate with cross-functional teams, including developers, engineers, and stakeholders, to understand software requirements and define integration needs.</li><li>Conduct thorough analysis of existing software systems and identify integration points, dependencies, and potential challenges as well as conduct performance analysis and optimization of integrated systems to ensure optimal efficiency and response times.</li><li>Develop architectural patterns and best practices for integrating COTS and in-house developed software, ensuring scalability, flexibility, and maintainability.</li><li>Provide technical leadership and guidance to development teams during the implementation of integration solutions and collaborate with vendors and third-party providers to ensure successful integration of COTS software into the existing software ecosystem.</li><li>Evaluate and select appropriate integration technologies, frameworks, and tools based on project requirements and industry best practices and ensure compliance with architectural standards, guidelines, and quality assurance processes in coordination with the Design Office. </li></ul>Essential Experience Of The Senior Software Engineer <ul><li>Proven experience as a Software Developer with a focus on software integration including Python, C#, PowerShell and Continuous Integration / Continuous Deployment (CI/CD) pipelines.</li><li>Experience with team and technical leadership and strong communication and collaboration skills to effectively work with cross-functional teams and stakeholders.</li><li>Knowledge of architectural patterns and best practices for software integration, such as Service-Oriented Architecture (SOA), Microservices, Enterprise Service Bus (ESB), Application Programming Interface (API) design, etc.</li><li>Strong expertise in designing and implementing integration solutions for COTS and in-house developed software, ensuring seamless data exchange and system interoperability.</li><li>Familiarity with containerisation technologies like Docker and orchestration tools like Kubernetes and solid understanding of Enterprise IT patterns, orchestration and lifecycle management.</li><li>Working with VMware products, Software-Defined Data Center (SDDC), Infrastructure as a service (IaaS), e.g. Ansible, Terraform and virtualised systems. </li></ul>Essential Qualifications For The Senior Software Engineer <ul><li>Degree in Computer Science, Software Engineering, or a related field or equivalent industry experience. </li></ul>We value difference and we don’t have a fixed idea when it comes to background or education, provided you can show the required level of experience and willingness to learn then we would like to hear from you. This role is 37 per week based at Bristol. Hybrid working patterns are available. Bristol The QinetiQ facility in Bristol is part of the company’s broader operation focused on defence and technology innovation. The site houses a diverse team of engineers, scientists and technical professionals who bring expertise to various projects ensuring high-quality outcomes. Why Join QinetiQ? As we continue to grow into new markets around the world, there’s never been a more exciting time to join QinetiQ. The formula for success is our appetite for innovation and having the courage to take on a wide variety of complex challenges. As a QinetiQ employee, you’ll experience a unique working environment where teams from different backgrounds, disciplines and experiences enjoy collaborating widely and openly as we undertake this exciting and rewarding journey. Through effective teamwork, and pulling together, you’ll get to experience what happens when we all share different perspectives, blend disciplines, and link technologies; constantly discovering new ways of solving complex problems in a diverse and inclusive environment where you can be authentic, feel valued and realise your full potential. Visit our website to read more about our diverse and inclusive workplace culture. <a>www.qinetiq.com/en/careers/life-at-qinetiq </a>Our Benefits <ul><li>Matched contribution pension scheme, with life assurance</li><li>Generous holiday allowance, with the option to purchase additional days</li><li>Options to join Health Cash Plan, Private Medical Insurance and Dental Insurance</li><li>Employee discount portal: Personal Accident Insurance, Travel Insurance, Restaurants, Cinema Tickets and much more</li><li>We are proud to support the Armed Forces community by honouring the Armed Forces Covenant and maintaining our Gold Award standard in the Defence Employer Recognition Scheme</li><li>Volunteering Opportunities - helping charities and local community </li></ul>Our Recruitment Process We want to make sure that our recruitment process is as inclusive as possible and we aspire to bring out the best in our candidates by creating an environment where everyone feels valued, heard and supported. If you have a disability or health condition that may affect your performance in certain assessment types, please speak to your Recruiter about potential reasonable adjustments. Many roles in QinetiQ are subject to national security vetting being completed, applicants who already hold the appropriate level of vetting may be able to transfer it upon appointment. A number of roles are also subject to additional restrictions, which means factors such as nationality or previous nationalities may affect the roles that you can be employed in. Please note that all applicants for this role must be eligible for SC clearance, as a minimum. <a>UKSV National Security Vetting Solution: guidance for applicants - GOV.UK (www.gov.uk)</a>

Job Title: Software Engineer Job Type: Permanent, Fulltime Job Location: Portsmouth area Job ID: 19268 We can offer you the chance to help make the UK a safer place through innovation, working in partnership with government, defence, and law enforcement organisations on some of the most challenging data and technology problems out there. We strongly encourage candidates of all different backgrounds and identities to apply. We are committed to building an inclusive, safe and supportive environment that allows everyone to do their best work. We are happy to support any accessibility or neurodiversity requirements that you may need during the recruitment process. About Us We’ve been around for about ten years and grown from being a little-known tech start-up to creating our own community at the heart of the thriving and diverse tech and digital ecosystem of Greater Manchester. As part of our future journey we’re looking to create footprints in other areas of the UK, and in this instance around the Portsmouth and Salisbury Plains area. Our name Naimuri is Japanese and simply means… ‘nai’ meaning ‘not’ ‘muri’ meaning ‘overburden’ These principles apply to every aspect of an organisation from technology, process and infrastructure, through to people, culture and leadership. This means that we empower our teams to do what they think is the right thing, giving them the skills and confidence to explore new ways of working, and to create a bias-free environment, where all our people feel comfortable collaborating to deliver the finest ideas and solutions in an agile environment. Our business is focused on 4 cornerstones, which shape and underpin the way in which we go about work and treat each other. These are: Wellbeing, Empowerment, Perpetual Edge and Delivery. People and culture are at the heart of Naimuri, so that collectively, we can realise our mission of ‘making the UK a safer place to be’. About The Role We are seeking a talented and passionate Full Stack Software Engineer to join either a software delivery team which is already supporting, or about to start supporting projects initially within the Defence sector, but with opportunities to work in other sectors in the future. What You'll Do <ul><li>Support the development of application functionality and features.</li><li>Write clean, well-documented, and testable code, adhering to best practices and coding standards.</li><li>Implement and maintain unit, integration, and end-to-end tests to ensure application quality and reliability.</li><li>Participate in code reviews, providing constructive feedback and ensuring code quality.</li><li>Stay up-to-date with the latest technologies, frameworks, and best practices.</li><li>Contribute to the continuous improvement of our development processes and tools. </li></ul>We’re Looking For Someone With <ul><li>Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.</li><li>Proven professional experience as a Software Engineer or similar role (3+ years.)</li><li>Previous demonstrable experience in delivery through Agile methodologies.</li><li>Experience with:</li><ul><li>JavaScript (ES6+), TypeScript.</li><li>.ASP.NET Core/.NET WebAPI</li><li>SQL</li><li>React</li><li>NextJS</li><li>NodeJS</li></ul><li>Experience of full stack development.</li><li>Proficiency with version control systems (e.g., Git).</li><li>Awareness of software development best practices, including testing, debugging, and performance optimization.</li><li>Excellent problem-solving skills and attention to detail.</li><li>Strong communication and collaboration skills, with the ability to work effectively in a team environment. </li></ul>It Would Be Advantageous If You Also Had <ul><li>Prior experience working in the Defence domain.</li><li>Awareness of Secure by Design (SbD) principles (ie/ JSP 440/604).</li><li>Familiarity with AWS.</li><li>Knowledge of accessibility standards (WCAG).</li><li>Experience with Express.</li><li>Experience with Kafka</li><li>Experience with Redis</li><li>Experience with Kubernetes</li><li>Experience with Docker/Podman</li><li>Experience with the Elastic stack.</li><li>Experience with graph databases.</li><li>Experience of e2e testing using Cypress or Playwright.</li><li>Experience with CI/CD pipelines.</li><li>Experience with Kubernetes and Docker. </li></ul>Location: Whilst our Head Office is based in Salford Quays, Manchester, with satellite offices in London and Cheltenham, the location for this role is in, or around the area of Portsmouth. The role would be hybrid working where you can work from home for part of your working week with time on site being based on the needs of your assigned delivery and agreed Ways of Working for your team. Onsite location would be in Portsmouth primarily, and would normally be a maximum of one or two days per week based on specific delivery demand but you would be welcome to spend more days in the office if you preferred. There would be occasional travel to Manchester estimated to be no more than once or twice a year. About You We’re looking for someone with strong experience in developing software solutions and a proven ability to deliver at pace. You should have some opinions on: <ul><li>What good code looks like (front end or back end) </li><li>How to select appropriate technologies for a solution</li><li>How to spot smells in the code </li></ul>Knowledge of developing on the cloud is preferred, although not essential. Solid fundamentals with software development, systems integration, problem solving, and teamwork pave the way. You might have a degree, it might be in a related field. You might not, and you can demonstrate how you’ve trodden the path for yourself. Pay And Benefits Naimuri pays competitively within the industry based on your role's base location rates. The salary for this position is dependent upon your experience. We assess seniority relative to the team at Naimuri during the interviewing process. A full time working week is 37.5 hours and you have flexibility over when you give that time. We also offer part-time working which can be discussed during the recruitment process. Our core hours are 10:00am - 3:00pm and our office hours are between 7:30 and 18:00 Monday to Friday. Benefits Include <ul><li>Flexible/Hybrid working options</li><li>A company performance related bonus</li><li>Pension matched 1.5x up to 10.5%</li><li>AXA group 1 medical cover</li><li>Personal training budget</li><li>Holiday buy-back scheme</li><li>A flexible benefits scheme </li></ul>Recruitment Process We want to ensure that you feel comfortable and confident when interviewing with us. To help you prepare, our recruitment team will discuss the process in more detail with you when you apply. We are happy to support any accessibility or neurodiversity requirements.

The Company We are a highly innovative and rapidly growing defence and technology company that design, develop, and deliver some of the world’s most advanced defence related training, products, and services. We were recently crowned Employer of the Year at the British Ex-Forces in Business Awards 2023. We have been listed as one of the ‘100 Best Large Companies to Work For’ in the UK and Midlands by Best Companies several times as well as achieving ‘Best Companies 3 Star Accreditation’ and a rating of ‘world-class’ for our employee engagement on a number of occasions. We are also proud to have been honoured with two Queen’s Awards for Enterprise in Innovation, for our next-generation GECO military mission planning system. As part of a unique and specialist defence company, our friendly team consists of experienced and highly capable individuals, working together with a mature ‘can do’ work ethic. Our central business functions are located in an easily accessible, bright and modern head office to the west of Lincoln, alongside our mission systems team, while the majority of our operational specialists are embedded alongside our Defence customers. The Role Due to the continued expansion of the Technical and Strategic Services area of Inzpire and our support to the MoD’s Mission Data for Information Advantage targets, we are seeking applications from those interested in working in a rapidly expanding area of the defence industry, Mission Data. The Joint Electromagnetic Warfare Operational Support Centre (JEWOSC) is situated at RAF Waddington and its mission is to deliver operational Mission Data to UK Ministry of Defence (MoD). There is no work from home option with this role. As a Mission Data Programmer/Analyst, you will turn raw emitter parametric data into high-quality, tested and assured Mission Data that will be utilised on UK Military platforms across the three domains of land, sea and air. This Mission Data ensures that the UK’s military platforms operate at their most effective, enhancing operator situational awareness and protection in high threat environments while providing operational advantages to friendly forces. Mission Data is vital for the proper functioning of the UK’s military equipment, and you will become part of the Whole Force Team charged with the responsibility of producing and testing this Mission Data. As a Mission Data Programmer/Analyst you will be involved in all parts of the Mission Data Cycle with particular emphasis on the build, test and post mission analysis. Mission Data products are specific to where they are used in the world, the platform it is used on and tailored to ensure the best product for the operator. The whole process must be agile and performed both quickly and accurately to protect UK and allied lives and interests. The Person We are looking for curious, open-minded individuals willing to learn, adapt to and overcome complex problems with multiple variables. The suitable candidate should have at least an A-level awareness of mathematics and the physical sciences or previous experience in Mission Data or Electronic Warfare. Candidates must have exceptional communication skills and be willing to embrace the Inzpire work ethic of loyalty, flexibility and consistently delivering above and beyond our customer’s expectations. <ul><li> Educated to at least A-level, or equivalent standard, or possess relevant experience.</li><li> Open minded and eager to learn and progress.</li><li> Organised with solid time management skills.</li><li> Proactive, self-motivated, willing, and able to work as a contractor in a militarised environment.</li><li> A professional and consultative approach and attitude to their work.</li><li> Confident and respectful to others, team player.</li><li> Possess excellent oral and written communication skills.</li><li> Enjoys and is challenged by multifaceted and complex problems.</li><li> Willing to undertake initial training and pass to a satisfactory standard (SQEP level 1) in the first six months of employment. </li></ul>Due to the nature of elements of the role, the successful applicant must be a UK National and may be required to successfully complete National Security Vetting which may require criminal record, security service and credit reference checks; qualification will also normally require a minimum UK residency of at least 5 years. How To Apply If you have the required background and are interested in joining a high-performing team, supporting the delivery of exceptional award-winning products and services to our customers, we would be delighted to hear from you. Please click apply and follow the instructions to upload your CV. Please note that we are part of the QinetiQ family and you will be taken to the QinetiQ careers website in order to complete your application. Benefits <ul><li>Our comprehensive benefits package includes:</li><li>30 days paid holiday plus 8 days bank holidays per year.</li><li>Uncapped leave scheme (upon successful completion of probation period).</li><li>Company provided private medical and dental insurance.</li><li>Company Share Incentive Scheme.</li><li>Enhanced maternity and paternity pay.</li><li>Annual profit and performance related pay scheme. </li><li>Generous death in service (£100k).</li><li>Company contributions into a group personal pension scheme.</li><li>Business travel insurance. </li><li>Funded role specific training and financial assistance with professional development.</li><li>Tax efficient cycle to work and charitable giving schemes.</li><li>Tax efficient electric vehicle company car scheme. </li></ul>Equal Opportunities Inzpire are committed to creating an inclusive and respectful environment for current and prospective employees. We recognise that a diverse, talented and highly motivated workforce is pivotal to our continuing success, therefore our selection decisions are based on the merit of the individual, irrespective of their race, colour, religion, gender, age, sexual orientation, marital status, disability or any other characteristic. We genuinely recognise the benefits of a diverse and inclusive working environment. We are proud to be a Disability Confident Committed Employer, a supportive signatory of the Armed Forces Covenant and a Gold award winner within the Defence Employer Recognition Scheme. We are therefore delighted to offer a guaranteed interview scheme to service leavers, reservists and military spouses or partners (including those of service leavers) who meet all our advertised requirements.

Job Title: Engineering Manager Location: Winfrith, Dorset Role Type: Permanent – Full Time Role ID: 19084 Are you ready to be part of the future? At QinetiQ, we’re not just imagining tomorrow we are creating it. From cutting-edge defence technology to ground-breaking innovations our mission is to empower and protect lives. Join us as a Engineering Manager at our Winfirth site, where you will have the opportunity to work with cutting-edge technology in partnership with some of the most brilliant minds. Role Purpose: Ensuring that the Maritime Ranges sites and facilities are safe, fit for use and available. Key Accountabilities: <ul><li>Setting out and monitoring the competency/development programme to competent range technicians for all the Maritime Ranges facilities – 15 persons</li><li>Delivery management of the Maritime Ranges Engineering leads – 5 persons</li><li>Ensuring all Maritime Ranges facilities are managed in accordance with their Through Life Support Strategy (TLSS) and maintenance schedule by competent staff, and that all defects are managed to conclusion</li><li>Key input to the investment projects delivering into Maritime Ranges –stakeholder/Customer, and acts to influence and accept at each stage</li><li>Lead the replacement of equipment for obsolescence whilst innovating to deliver efficiency and enhancement</li><li>Input to and drive forward Maritime Ranges strategy</li></ul> Key Capabilities/Knowledge: <ul><li>Communication skills utilising a variety of methods appropriate to the audience and situation</li><li>Collaborative team working</li><li>Strong engineering and technical knowledge</li><li>Good understanding of health, safety, environmental and quality arrangements</li><li>Knowledge of relevant legislation, regulation, standards and guidance</li><li>Ability to effectively communicate and work collaboratively with people at all levels, both internal and external</li><li>Methodical and Logical approach</li><li>Good level of IT competence</li></ul> Experience & Qualifications: <ul><li>General engineering and operations background: Technical/engineering background is essential</li><li>Demonstrable track record of successful engineering management</li><li>Chartered Engineer (or equivalent) is desirable</li><li>NEBOSH / IOSH Managing safely is desirable</li><li>Experience of process/continuous improvement activities</li></ul> Why Join QinetiQ? As we continue to grow into new markets around the world, there’s never been a more exciting time to join QinetiQ. The formula for success is our appetite for innovation and having the courage to take on a wide variety of complex challenges. As a QinetiQ employee, you’ll experience a unique working environment where teams from different backgrounds, disciplines and experiences enjoy collaborating widely and openly as we undertake this exciting and rewarding journey. Through effective teamwork, and pulling together, you’ll get to experience what happens when we all share different perspectives, blend disciplines, and link technologies; constantly discovering new ways of solving complex problems in a diverse and inclusive environment where you can be authentic, feel valued and realise your full potential. Visit our website to read more about our diverse and inclusive workplace culture. www.qinetiq.com/en/careers/life-at-qinetiq Our Benefits: <ul><li>Matched contribution pension scheme, with life assurance</li><li>Competitive holiday allowance, with the option to purchase additional days</li><li>Options to join Health Cash Plan, Private Medical Insurance and Dental Insurance</li><li>Employee discount portal: Personal Accident Insurance, Travel Insurance, Restaurants, Cinema Tickets and much more</li><li>We are proud to support the Armed Forces community by honouring the Armed Forces Covenant and maintaining our Gold Award standard in the Defence Employer Recognition Scheme</li><li>Volunteering Opportunities - helping charities and local community</li></ul> Our Recruitment Process: We want to make sure that our recruitment process is as inclusive as possible and we aspire to bring out the best in our candidates by creating an environment where everyone feels valued, heard and supported. If you have a disability or health condition that may affect your performance in certain assessment types, please speak to your Recruiter about potential reasonable adjustments. Many roles in QinetiQ are subject to national security vetting being completed, applicants who already hold the appropriate level of vetting may be able to transfer it upon appointment. A number of roles are also subject to additional restrictions, which means factors such as nationality or previous nationalities may affect the roles that you can be employed in. For further information on National Security Vetting, please see the link below. UKSV National Security Vetting Solution: guidance for applicants - GOV.UK (www.gov.uk)

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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