At a Glance
- Tasks: Own the performance strategy and enhance our in-house platform using cutting-edge tools.
- Company: Join a forward-thinking tech company focused on innovation and collaboration.
- Benefits: Enjoy a competitive salary, hybrid work model, and opportunities for professional growth.
- Other info: Dynamic role with a focus on coaching and hands-on problem-solving.
- Why this job: Make a real impact by driving performance improvements across multiple product teams.
- Qualifications: Experience with C# .NET, Gatling, and a passion for AI-driven solutions.
The predicted salary is between 60000 - 80000 £ per year.
Senior Performance Test Engineer with C# .NET Gatling and AWS required to own the end-to-end performance strategy across 8-10 product teams in a mature, BAU performance environment, with a clear mandate to take it further.
Key skills: C# .NET, Gatling, k6, JMeter, OpenTelemetry/Splunk APM/Prometheus/Grafana, AWS, CI/CD, SLI/SLO, distributed tracing, Spark MCP and agentic AI.
The in-house performance platform is built on Gatling with a C# wrapper. You will maintain and enhance it, troubleshoot independently using tracing and metrics, and coach engineers directly within product squads rather than managing a dedicated performance team.
Around half your time will be enabling teams; the rest split between platform ownership and actively exploring how AI tooling, particularly agentic workflows using Spark MCP and GitHub MCP, can reduce manual effort, accelerate issue detection, and shift performance left into CI/CD pipelines.
Splunk is the current observability stack; experience with Prometheus, Grafana, or Kibana is transferable. You don't need to have delivered full agentic AI projects end-to-end, but you should be genuinely curious, self-directing, and able to put something tangible in front of teams quickly.
This is not a coordinating role; you'll be expected to build, demonstrate, and drive.
Hybrid: 2 days on-site (Wednesday).
Senior Performance Test Engineer - C#.NET Gatling AWS employer: Lexstra Plc
Join a forward-thinking company that values innovation and collaboration, where as a Senior Performance Test Engineer, you will play a pivotal role in shaping the performance strategy across multiple product teams. With a strong emphasis on employee growth, we offer extensive training opportunities and a supportive work culture that encourages curiosity and self-direction. Located in a vibrant area, our hybrid work model promotes a healthy work-life balance while allowing you to engage directly with talented engineers and explore cutting-edge AI tooling.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Performance Test Engineer - C#.NET Gatling AWS
✨Tip Number 1
Network like a pro! Reach out to current employees on LinkedIn or other platforms. Ask them about their experiences and the company culture. This can give you insider info and might even lead to a referral!
✨Tip Number 2
Prepare for those technical interviews! Brush up on your C# .NET skills and get familiar with Gatling and AWS. Practising coding challenges and performance testing scenarios will help you shine during the interview.
✨Tip Number 3
Show off your curiosity! During interviews, share examples of how you've explored new tools or technologies, especially around AI and performance testing. This will demonstrate your proactive approach and eagerness to learn.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in being part of our team.
We think you need these skills to ace Senior Performance Test Engineer - C#.NET Gatling AWS
Some tips for your application 🫡
Show Off Your Skills:Make sure to highlight your experience with C# .NET, Gatling, and AWS in your application. We want to see how you've used these tools in real-world scenarios, so don’t hold back on the details!
Be Curious:We love candidates who are genuinely curious about technology and performance testing. Share any projects or experiences where you explored new tools or methodologies, especially around AI and CI/CD.
Tailor Your Application:Don’t just send a generic CV! Tailor your application to reflect how your skills and experiences align with our needs. Mention specific projects that relate to performance strategy and team coaching.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen to join our team!
How to prepare for a job interview at Lexstra Plc
✨Know Your Tech Stack
Make sure you’re well-versed in C# .NET, Gatling, and AWS. Brush up on your knowledge of performance testing tools like JMeter and k6, as well as observability stacks like Splunk and Grafana. Being able to discuss how you've used these technologies in past projects will show that you're not just familiar with them, but that you can apply them effectively.
✨Show Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in performance testing and how you tackled them. Think about times when you had to troubleshoot independently or enhance a performance platform. Sharing tangible examples will demonstrate your ability to think critically and act decisively, which is crucial for this role.
✨Emphasise Your Coaching Experience
Since this role involves coaching engineers within product squads, be ready to talk about your experience in mentoring or enabling teams. Highlight any instances where you’ve successfully guided others in adopting new tools or practices, especially in a CI/CD environment. This will show that you can lead without being in a formal management position.
✨Be Curious About AI Tooling
The job mentions a focus on agentic AI workflows, so express your curiosity and willingness to explore AI tooling. Even if you haven’t delivered full projects, share your thoughts on how AI can improve performance testing processes. This shows that you’re forward-thinking and eager to innovate, which aligns with the company’s goals.
