> Markdown version of [/jobs/ext/4492331-senior-test-engineer-sdet](https://www.wearedevelopers.com/jobs/ext/4492331-senior-test-engineer-sdet). 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).

---

# Senior Test Engineer (SDET)

- **Company:** NonStop Recruitment
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Salary:** £169,000.0 - £182,000.0
- **Contract:** Temporary contract
- **Skills:** JavaScript (Programming Language), .NET Framework, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Code Coverage, Software Quality, Relational Databases, Github, Node.Js, SQL Databases, System Integration Testing, TypeScript, Integration Tests, Playwright, Cucumber (Software), Software Version Control, SDET, Microservices
- **Published:** November 2, 2026
- **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=3043592743-2

## About the Role

* Test tools: Cucumber, Playwright and K6
 * Version control: GitHub and Azure DevOps
 * Microsoft-stack coding: C#, Node.js, JavaScript or TypeScript
 * SQL and relational databases
 * Testing on .NET, SQL and microservices, both on-prem and in the cloud
 * Proven experience as an automation test engineer

## Description

* Define and evolve the automation-first testing strategy
 * Carry out automated system and system integration testing across functional and non-functional areas
 * Report quality risks and results clearly, so they inform defect fixes and release decisions
 * Work closely with developers to improve code quality and unit and integration test coverage
 * Peer review automation code and lead sprint show-and-tells
 * Assess the impact of changes on test coverage