SDET Engineer in London

About Us

The company is an engineering consultancy bridging Quality Engineering, Cloud Platforms and Developer Experience. We help enterprises reliably bring high-impact digital products to market faster, cheaper, and safer, working with technology leaders facing complex business challenges. We take as much pride in our people, culture and work‑life balance as we do in making better software. We’re not just making better software. We’re making the making of software better. Collaborative, entrepreneurial and dedicated to problem solving, we bring the step change our customers need to sustain innovation. Our values challenge us to do the best we can for the company, our customers and most importantly our team. This is an opportunity for you to build the organisation from the ground up, use your voice to drive change and help transform organisations and problem domains. We work in a hybrid way, with two days a week onsite in our Hatton Garden office.

Role

At the company, we are looking for an SDET Engineer who is passionate about quality and brings hands‑on experience across API and UI automation. You will work alongside engineering and data teams to build robust test frameworks, integrate them into CI/CD pipelines, and improve automation standards.

Key Responsibilities

• Design, implement, and maintain API and UI automation frameworks using Python or Java/TypeScript.
• Test and validate RESTful APIs and backend microservices for correctness, reliability, and performance.
• Build and maintain automated regression suites, including consumer‑driven contract tests (e.g., Pact).
• Automate validation for AI‑driven services, data pipelines, and ETL transformations.
• Integrate test suites into CI/CD pipelines using Azure DevOps, GitHub Actions, Jenkins, or GitLab CI.
• Work with data and engineering teams to validate data‑intensive systems and integration layers.
• Contribute to framework improvements and support peers in adopting automation best practices.

Required Experience

• Experienced SDET (circa 5+ years) with a strong automation background.
• Proficiency in Python or Java/TypeScript for test automation.
• Experience with API testing tools such as PyTest, Requests, RestAssured, or Robot Framework.
• Familiarity with UI automation using Selenium/WebDriver or equivalent.
• Exposure to consumer‑driven contract testing (Pact or similar).
• Working knowledge of CI/CD pipelines, Git, and containerised environments (Docker).
• Understanding of test design, debugging, and failure analysis.
• Some exposure to cloud platforms (AWS, Azure, or GCP).

Desirable Experience

• Experience testing AI services, LLMs, or Agentic AI workflows.
• Hands‑on with performance or load testing tools (JMeter, Gatling).
• Familiarity with Kubernetes, Terraform, or Infrastructure as Code.
• Exposure to data validation, ETL pipelines, or batch processing systems.

At the company, we believe diverse perspectives lead to better outcomes, and inclusion creates the conditions for everyone to thrive. We are proud to have built a family‑friendly working environment and have many employees who have caring responsibilities alongside work. We welcome applications from people who require flexibility and will be happy to discuss needs on an individual basis. We are committed to fostering a culture where all team members feel respected, supported, and empowered to do their best work. We celebrate individuality and our differences and understand that some differences may mean that you require changes made to the interview process. We are happy to cater to your needs to make the interview accessible, if this is something you require please let us know by emailing us at.