34 Performance Engineer Interview Questions (With Answers)

By Indeed Editorial Team

Published 24 September 2022

The Indeed Editorial Team comprises a diverse and talented team of writers, researchers and subject matter experts equipped with Indeed's data and insights to deliver useful tips to help guide your career journey.

Performance engineers conduct primary testing and developing activities of new software products, applications and systems. They work through the entire development cycle of a product to ensure that it is highly functional and fulfils the requirements of its users. During an interview, recruiters can ask varied questions to determine what strategy you follow when identifying performance issues or what performance engineering practices you apply to accomplish your projects. In this article, we share 34 performance engineer interview questions, along with four sample answers that may help you create your own responses.

10 General Performance Engineer Interview Questions

Below are ten general performance engineer interview questions that interviewers may ask to assess your personality, career goals, work ethic and motivations:

  1. What inspired you to become a performance engineer?

  2. Why did you choose to apply for the performance engineer position in our organisation?

  3. Can you please share some of your career goals with us?

  4. What expectations do you have from this position in our company?

  5. Are you comfortable travelling routinely to different cities because of work?

  6. Can you tell us about a quality that helps you to excel in your career?

  7. The routine responsibilities of a performance engineer may be challenging. Do you have a method that you follow to manage workplace stress?

  8. Tell us about one of the challenges that you have experienced in your previous role.

  9. Working alone or with a team, what do you prefer?

  10. Do you have experience in leading teams?

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10 Questions About Background And Experience

Below are ten background and experience questions with which recruiters examine your professional accomplishments and educational qualifications:

  1. Do you think your scholastic credentials have prepared you well for this role?

  2. You have been in the industry for five years. What has your work experience been like?

  3. How has your prior professional experience prepared you for this role?

  4. Why do you think performance testing is important?

  5. What is your understanding of software performance engineering?

  6. List some metrics that you employ when quantifying product performance.

  7. Can you tell us about a time when you applied your adaptability skills to complete the project on time?

  8. List some of the best performance engineering practices that a professional may follow.

  9. Can you define what performance tuning is?

  10. Tell us about the time when your manager implemented and appreciated your suggestions.

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10 In-Depth Questions

Below are ten in-depth or specific questions that interviewers may ask to assess your past roles and responsibilities so that they can understand your work experience better:

  1. Can you list and explain the types of performance testing?

  2. Share with us some common problems that a user experiences during a product development cycle. Also, tell us what solutions you may offer in such situations.

  3. What do you think is a major problem that is associated with using caches?

  4. In the information technology (IT) field, what recent developments have impressed you?

  5. In what ways does performance testing differ from performance engineering?

  6. What is the significance of communication and collaboration in this role?

  7. What, according to you, are some pros and cons of virtual servers?

  8. List some important layers of the software architecture.

  9. What process do you follow to develop and test a new application?

  10. Please share with us a few performance bottlenecks that you have experienced in the past.

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4 Performance Engineer Interview Questions And Example Answers

Here are four interview questions and their sample responses to help you prepare your own answers:

1. Can you discuss the purpose of a performance engineer's job?

Interviewers ask this question to evaluate your understanding of the role and what responsibilities these professionals usually fulfil in the performance engineer position. Give an answer that shows your industry knowledge and include in the response how a performance engineer's role is important for developing robust software solutions and IT systems from start to finish. You may also mention how you identify problems and resolve bottlenecks to deliver a functional application.

Example answer: 'When building IT systems, software engineers apply several assumptions about user behaviour. This may often result in software performance issues. As performance engineers know that this may not be the right approach to development, they work towards understanding the business and identifying the industry standards. This helps them to focus on the architecture and design aspects of software development. With better code structure and user interface (UI) design, performance engineers help businesses with building an efficient product and removing glitches to deliver a product that is ready to be published for end users.'

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2. Tell us about some technical issues that you have experienced and how have you resolved them

The purpose of asking this question is to identify the kinds of challenges you have experienced during performance engineering. In your answer, talk about the issues you have resolved in your previous organisations and share with recruiters how you did it. Clearly define the problem-resolution method to show your skills and technical knowledge. Consider including only the necessary information when sharing an example to keep your answer brief.

Example answer: 'While I was working with a software solutions company in 2018, one of the restaurant management software products my team was testing developed processor throttling. There were too many requests for the processor, while the central processing unit (CPU) was also running beyond its maximum capacity. I increased the CPU power and also suggested adding more random access memory (RAM) to overcome these issues.

Though I and my team resolved this issue, soon we witnessed a network glitch. I quickly performed a network analysis to find the root cause. Doing this, I found out the servers were not able to bear the request load. I resolved this problem by getting the organisation to upgrade the servers.'

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3. Why do you wish to leave the position in your present organisation?

This question helps them to identify and evaluate your reason for leaving the present job and whether you are looking for a long-term or short-term opportunity. Talking about the positive aspects of your current position and organisation may prove beneficial, as it may highlight your professionalism and geniality. Consider giving an answer that focuses on what you intend to achieve in the future and how the hiring organisation may support your career advancement.

Example answer: 'My present organisation has offered me several challenging roles and assigned me many important projects. I have worked with some of the most skilled software developers, engineers and technicians. I have an extremely receptive and supportive manager, but I feel I can now work on even more challenging projects and further enhance my skill sets. My role in this organisation includes both technical and administrative responsibilities, but I also wish to work with estimations and complex calculations. Working with your organisation, I may get to accomplish this career goal.

I read the job description for this position and another factor that appealed to me the most was the opportunity to collaborate with highly experienced quality assurance, DevOps and infrastructure teams. Given that I have an in-depth understanding of the software development cycle, I believe I can be a great addition to the performance engineering team here. I also plan to leave my current organisation because I feel I am ready to work with a company that is focusing on extensible software architectures, synthetic transactions and artificial intelligence to automate testing.'

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4. Please tell us why you think we should hire you

With this question, you have another opportunity to talk about your strengths and abilities and convince hiring managers you are a suitable candidate for this position. For an articulate answer, talk about the skills that may help you fulfil the many requirements for the position. You may also include how your career goals and work ethic align with the organisation's culture.

Example answer: 'I am passionate about my work as a performance engineer and this has helped me to remain motivated and deliver my best efforts. I enjoy my work a lot, especially when I am isolating performance issues and implementing solutions. In such roles, I have realised that there is a good scope for continuous learning. I am also proficient in delivering high-quality and detailed work, where I focus on working per the established company standards.

This company has diverse teams and a dynamic work culture, which may enable me to learn a lot from other professionals. I feel that my professional credentials, experience and goals also align with the mission and vision of the organisation. Your organisation is also an industry leader, having projects all around the world. This may give an opportunity to further enhance my industry knowledge and gain new skills to grow myself as a professional.'

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