Software Engineer in Test | London, Hybrid

Software Developer in Test (SDET) | Software Development Firm | London, Hybrid

Our client builds technology that supports public sector organisations in managing complex regulatory and operational challenges at scale.

Backed by recent investment, they are growing fast - expanding internationally, strengthening their platform, and investing heavily in their people and ways of working.

This is an opportunity to join a purpose‐driven organisation at a pivotal stage, where you can have real impact and help shape what comes next.

In this hands-on engineering role, you will lead and define testing standards within a new product team (4 engineers plus a Product Manager).

You will contribute to transformation projects, including rewriting and re-architecting a core product with zero downtime for customers.

You’ll write and maintain code, take part in code reviews, and embed quality across the CI/CD and release processes.

📍London, Hybrid Working - with visits to the Head Office when needed (Greater London)

💷Competitive Base + Benefits Package

⏰Permanent Role

Key Responsibilities

• Own the end-to-end test strategy for your team, setting a high bar for quality and reliability.
• Design, build, and maintain automated test suites (unit, integration, end-to-end) and test tooling.
• Work closely with engineers and product to define acceptance criteria and ensure testability.
• Improve and operate CI/CD pipelines, including test automation, quality gates, and release confidence.
• Support delivery of re-platforming work on legacy systems, balancing risk and speed pragmatically.
• Drive continuous improvement through metrics, root-cause analysis, and prevention-focused practices.

Requirements

• Strong hands-on coding skills in JavaScript/TypeScript.
• Proven experience writing automated tests and designing approaches to ensure high quality.
• Experience building and running CI/CD pipelines.
• Comfortable working with complex, sometimes confusing legacy applications.
• Experience designing and delivering high-quality software in modern engineering teams.
• Clear views on how to test software effectively; “strong opinions, weakly held”.
• Good communication skills and the ability to collaborate across disciplines.

If you are interested in this role, please apply diretly to this advert with your updated CV.