Senior Software Engineer in Test; SDET
Listed on 2026-07-19
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Software Development
Software Testing, Software Engineer, React.js, Full Stack Developer
Location: City Of London
We are looking for a highly skilled Software Development Engineer in Test (SDET) to join our cross‑platform engineering team. In this role, you will work closely with React Native mobile developers and React web engineers to build and maintain a world‑class automation framework spanning both mobile and web tech stacks. You'll be responsible for ensuring high-quality releases through robust automated testing, tooling, and engineering excellence.
WhatYou'll Do
- Design, develop, and maintain automated test suites for web tech stack
- Implement test frameworks and CI workflows to improve coverage and execution reliability.
- Partner with developers to define test strategy, acceptance criteria, and quality gates for new features.
- Build reusable components and abstractions to keep automation code clean, maintainable, and scalable.
- Conduct code reviews for automation contributions to ensure best practices.
- Build and maintain test coverage for shared business logic for React platform.
- Reduce test cycle time and improve test stability.
- Solid understanding of React architecture & debugging tools.
- Experience with REST APIs or GraphQL.
- Experience with CI/CD pipelines
- Excellent communication skills and experience working in agile environments.
- Experience in fintech or banking applications.
- Familiarity with micro-frontend architecture.
- Experience working with feature flags.
- Familiarity with accessibility testing tooling.
A brief conversation to review your experience, understand your approach to quality, and assess overall role fit.
Stage 2 - Technical take home exercise (1 week)A take home technical test where you'll be asked to implement automated tests for an existing React application to ensure its quality.
Stage 3 - Technical interview (90 mins)We will go over your submitted take home exercise to get a better understanding of how you solve problems, also we ask some behavioural questions to make sure you're a good fit for our team and company culuture.
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