Senior Software Development Engineer in Test (SDET) London – 1 day a week on-site £75,000 – £85,000 This is an excellent opportunity for a Senior SDET who focuses on the development side, rather than a traditional QA resource. If you thrive on writing code, influencing architecture, and embedding quality directly into the development lifecycle, this is the role for you. This company is breaking down barriers and making the world more accessible for everyone. Originally founded within the UK transport sector, they have developed award‑winning, innovative solutions that prioritise dignity, safety, and inclusion for millions of users. In this varied role you will be a technical partner embedded in the development process, ensuring quality is baked into every feature. Moving beyond traditional QA, you will own unit and integration testing, enhance Ruby/RSpec backend services, and collaborate with iOS and Android teams to maintain high‑standard automation across the entire ecosystem. The ideal candidate will have a deep understanding of the SDLC, with the ability to navigate complex Ruby codebases and contribute directly to RSpec suites. Beyond just finding bugs, you will be a specialist in testability, advising on how architecture can be designed to be more verifiable from the outset. You will be key to ensuring that every automated test provides clear business value and integrates seamlessly into a high‑velocity CI/CD environment. The Role

Design automated tests alongside developers to validate core business functionality. Own unit and integration testing across Ruby and mobile platforms. Maintain scalable test suites within CI/CD for rapid, reliable deployments. Advise on testability and code quality during architecture and peer reviews.

The Person

Deep experience in Ruby, RSpec, and mobile automation frameworks. Strong technical understanding of the full development lifecycle. Partners with Product and Engineering to drive quality strategies. Able to commute to London 1 day a week.

Reference Number: BBBH (phone number removed) Rise Technical Recruitment Ltd acts as an employment agency for permanent roles and an employment business for temporary roles. The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise is not responsible or liable for any hiring decisions made by the end client. We are an equal opportunities company and welcome applications from all suitable candidates. #J-18808-Ljbffr