Performance Test Engineer

Performance Test Engineer

Posted 1 day ago by Travel Chapter

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£46,000 Per year
Fixed-Term
Hybrid
City Of Bristol, England, United Kingdom
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Application Programming Interface (API) Automation Behavioral Driven Development (BDD) Bottleneck Analysis Continuous Integration and Continuous Delivery Cucumber (Software) Datadog Device Tracking Software DevOps Gherkin (Scripting Language) Gitlab Grafana JavaScript (Programming Language) JIRA Management Market Trend Performance Testing Software Development Software Development Engineer in Test Stakeholder Management Test Management User Interface Version Control

Summary: The role of Software Development Engineer in Test (SDET) involves leading performance testing for a bespoke reservation platform on a 14-month fixed-term contract. The position requires collaboration with various teams to enhance system performance and reliability, focusing on API-driven services and UI automation. The candidate will utilize tools like K6 and Cypress to ensure quality throughout the development lifecycle. This role is integral to the QA team, contributing to continuous improvement and effective communication of findings.

Key Responsibilities:

  • Lead performance testing for the bespoke reservation platform using K6.
  • Design, execute, and analyse complex API load and stress tests, identifying bottlenecks and optimisation opportunities.
  • Maintain and reset performance test environments and datasets between runs.
  • Collaborate closely with Developers, DevOps, and Technical Leads to drive performance improvements.
  • Create clear, actionable reports and communicate findings to technical and non-technical stakeholders.
  • Contribute to the Cypress UI automation suite and embed quality checks early in the development lifecycle.
  • Use observability tools such as DataDog to monitor metrics and investigate performance trends.
  • Support CI/CD processes and ensure smooth, reliable automation execution.
  • Share best practices and champion continuous improvement across QA and Engineering.

Key Skills:

  • Proven experience in performance testing complex API-driven platforms, from design through to analysis and reporting.
  • Hands-on proficiency with K6 and Grafana for load and performance testing.
  • Strong JavaScript experience for test development.
  • Experience with Cypress for UI automation and familiarity with BDD tools such as Cucumber and Gherkin.
  • Solid API testing experience using tools such as Postman.
  • Experience with DataDog or similar tools for observability and bottleneck analysis.
  • Good understanding of performance metrics and collaboration with DevOps to optimise systems.
  • Experience with CI/CD pipelines and version control (GitLab or similar).
  • Practical experience with test management and issue tracking tools such as Xray and JIRA.

Salary (Rate): £46,000.00 yearly

City: City Of Bristol

Country: United Kingdom

Working Arrangements: hybrid

IR35 Status: fixed-term

Seniority Level: Mid-Level

Industry: IT

Detailed Description From Employer:

Software Development Engineer in Test (Fixed Term Contract – 14 Months Maternity Cover)

Location: Hybrid – travel to our Bideford HQ when required

Contract Type: Fixed Term (14 months maternity cover)

Reports to: QA Lead

We’re looking for a Software Development Engineer in Test (SDET) to join our QA team on a 14-month fixed-term contract. You’ll play a key role in ensuring the performance and reliability of our bespoke reservation platform, working on a major initiative that brings together data, functionality, and experience into one unified system. This role focuses on performance testing of complex API-driven services using K6 , with additional involvement in maintaining our Cypress UI automation and supporting the wider QA function.

What you’ll be doing:

  • Lead performance testing for our bespoke reservation platform using K6
  • Design, execute, and analyse complex API load and stress tests, identifying bottlenecks and optimisation opportunities
  • Maintain and reset performance test environments and datasets between runs
  • Collaborate closely with Developers, DevOps, and Technical Leads to drive performance improvements
  • Create clear, actionable reports and communicate findings to technical and non-technical stakeholders
  • Contribute to our Cypress UI automation suite and embed quality checks early in the development lifecycle
  • Use observability tools such as DataDog to monitor metrics and investigate performance trends
  • Support our CI/CD processes and ensure smooth, reliable automation execution
  • Share best practices and champion continuous improvement across QA and Engineering

What we’re looking for:

  • Proven experience performance testing complex API-driven platforms, from design through to analysis and reporting
  • Hands-on proficiency with K6 and Grafana for load and performance testing
  • Strong JavaScript experience for test development
  • Experience with Cypress for UI automation and familiarity with BDD tools such as Cucumber and Gherkin
  • Solid API testing experience using tools such as Postman
  • Experience with DataDog or similar tools for observability and bottleneck analysis
  • Good understanding of performance metrics and collaboration with DevOps to optimise systems
  • Experience with CI/CD pipelines and version control (GitLab or similar)
  • Practical experience with test management and issue tracking tools such as Xray and JIRA

At Travel Chapter, we’re passionate about creating better holiday experiences and better workplaces. As a certified B Corp , we balance profit with purpose – from building sustainable technology to supporting local communities. You’ll be part of a collaborative, people-first culture where your ideas can make a real difference. Ready to start your next chapter? Apply now to help us shape the performance, quality, and reliability of our industry-leading technology platform.

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