> Markdown version of [/jobs/ext/1553301-performance-tester](https://www.wearedevelopers.com/jobs/ext/1553301-performance-tester). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Performance Tester

- **Company:** Mastek
- **Location:** Reading, UK
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Performance Management, Microsoft Azure, Continuous Integration, Github, HP Loadrunner, Apache JMeter, Oracle (Applications), Performance Tuning, Cloud Platform System, Performance Testing, Test Scripts, Restful APIs, Dynatrace, Jenkins
- **Published:** July 3, 2026
- **Apply:** https://jobsthamesvalley.co.uk/jobs/apply/ats-redirect/?id=2856142236-2

## About the Role

* In-depth experience with non-functional testing (performance, resilience and failover)
 * Experience of defining performance test approach and standards.
 * Strong knowledge of LoadRunner and JMeter
 * Ability to code using C and Java
 * Strong knowledge in testing RESTful web services.
 * Experience with Azure DevOps, GitHub and Jenkins
 * Experience with Application performance monitoring (APM) tools like Dynatrace, etc
 * Experience with working on cloud-based platforms such as Microsoft Azure to optimize system performance and scalability
 * Strong analysis and problem-solving skills with meticulous attention to detail
 * Collaborative with strong communication skills, comfortable liaising with clients

Skills:

You have a strong appreciation of complex architecture and solutions.

 * You have experience of non- functional testing (NFT)/ performance engineering on large complex enterprise Java/ Oracle applications.
 * You have a strong desire to understand the why of performance issues and not be happy just to report response times.
 * Evidence of understanding aspects of system performance such as latency of operations and hardware resource consumption. Understand what measurable attributes tell us how these are performing
 * Experience of combining multiple performance attributes to predict end to end system performance, to extrapolate from one system to another and to predict impact of changes
 * Evidence of designing and documenting the mechanisms to measure performance, and harvest performance data from deployed systems
 * Evidence of guiding teams working on system performance to implement the performance measurement design
 * Hands on involvement in performance testing.
 * Ability to showcase thorough understanding of working with CI/CD technologies.

## Description

We are hiring for Performance Tester who will help ensure the quality of the core platform written in Java with a focus on non-functional testing of performance and resilience. Person be responsible for creating Performance Test Plans, Test Reports and Test Scripts and utilising tools to measure, detect, isolate and resolve performance issues from performance (testing peak traffic), availability and resilience (stability of system), operability (how ready the platform is) and latency to meet particular criteria and regulatory compliance.

You'll be working across the full test lifecycle, liaising directly with clients and providing tactical and strategic test approaches for service level and component level performance testing; performing diagnosis and identification of performance issues in test and production environments and working on re-creation and resolution of the issues.


## Related Videos

- [Frontend Performance Testing in practice](https://www.wearedevelopers.com/videos/8-frontend-performance-testing-in-practice)
- [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next)
- [The Road to MLOps: How Verivox Transitioned to AWS](https://www.wearedevelopers.com/videos/1050-the-road-to-mlops-how-verivox-transitioned-to-aws)
- [The Power of Purpose: Unlocking Potential and Innovation](https://www.wearedevelopers.com/videos/1110-the-power-of-purpose-unlocking-potential-and-innovation)
- [It's Not Vibe Coding If You Know What You're Doing](https://www.wearedevelopers.com/videos/100119-it-s-not-vibe-coding-if-you-know-what-you-re-doing)
- [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models)

## Related Articles

- [Benefits of Using JMeter For Performance Testing](https://www.wearedevelopers.com/magazine/96-benefits-of-using-jmeter-for-performance-testing)
- [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools)
- [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)
- [Integration And E2E Testing: Are They Complementary or Interchangeable?](https://www.wearedevelopers.com/magazine/86-integration-and-e2e-testing-are-they-complementary-or-interchangeable)
- [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges)
- [What is a Test Plan: Guide to Test Planning](https://www.wearedevelopers.com/magazine/191-what-is-a-test-plan-guide-to-test-planning)