Software Development Engineer in Test
ABOUT THE COMPANY: OAG is the essential intelligence partner transforming global travel. For nearly a century, we've been the foundation the travel industry builds on, trusted, proven, essential. Today, we're going beyond. We combine unmatched data quality, quantity and access with breakthrough technology and deep industry expertise to deliver what the industry truly needs: not just more data, but better answers. From real-time operational intelligence to strategic decision-making, we power the entire travel ecosystem, from airlines and airports to technology companies and financial institutions. We are actively embedding AI throughout our intelligence layer, combining nearly a century of proprietary data with the latest technology to deliver answers that were simply not possible before. We exist because travel moves the world, and we move travel. By transforming complexity into clarity and questions into answers, we give our partners the intelligence they need to thrive in an evolving world. For more information visit www.oag.com ABOUT THE ROLE: You’ll join a diverse, multi-skilled engineering team in the UK, working on aviation reference data that powers OAG’s core products. We operate with a T-shaped engineering mindset — deep expertise in your craft, with the flexibility to collaborate across disciplines when needed. This is a hands-on SDET role where you’ll take ownership of test strategy, frameworks, tooling, and data validation. You’ll play a key role in ensuring the quality, reliability, and integrity of large-scale data pipelines and cloud-based systems. WHAT YOU’LL BE DOING: Own and evolve a multi-tier test strategy across the platform — unit, component, integration, and smoke tests Write and maintain BDD acceptance tests in Reqnroll (Gherkin/Given-When-Then), covering the full breadth of flight query scenarios Design and run performance and load tests using K6 and JMeter against Cosmos DB-backed, identifying throughput bottlenecks and regression risks before they hit production Validate data pipeline integrity across the full sync chain, build test harnesses that assert correctness of data transforms, upsert guards, and soft-delete semantics at each stage Design and build AI-assisted test tooling, prompt-driven test generation, agentic verification workflows, and automated coverage gap analysis using LLMs Work closely with backend and data engineers across the team to reproduce and characterise production data anomalies, trace them through the sync pipeline, and write regression tests that lock the fix in place WHAT WE’RE LOOKING FOR: Strong C# / .NET engineering skills — you write test code to the same standard as production code: clean, SOLID, maintainable, and reviewed like it matters Confident designing and implementing test automation frameworks from scratch Hands on with BDD frameworks (Reqnroll, SpecFlow, or a Cucumber equivalent), you can write and own Gherkin feature files, not just run them Solid understanding of CI/CD pipelines, reading and authoring YAML, integrating tests as quality gates, debugging flaky pipeline runs Experience with performance and non-functional testing — load profiles, baseline comparisons, interpreting results under realistic conditions Comfortable working asynchronously across timezones as part of a distributed team IF YOU HAVE THE FOLLOWING THAT WOULD BE GREAT: Hands-on with Snowflake or another analytical data warehouse — querying data at scale, understanding ingestion or change-data-capture patterns Experience with Azure Cosmos DB AI/LLM tooling experience, Claude, GitHub Copilot, or similar Familiarity with Terraform or other IaC K6 or JMeter experience in a real delivery pipeline If you don’t meet every requirement but feel excited about this role, we’d still love to hear from you. WE WILL OFFER YOU: 🚀 A progressive, non-hierarchical culture where innovation drives everything we build 🏡 Flexible working arrangements that allow remote work or office attendance 💰 An attractive compensation and benefits package, including private health insurance from day one of joining, a company bonus scheme and company pension scheme 🏖️ 22 days holiday, growing with each year of service, volunteering days and an additional day off during your birthday month 📚 Annual learning and development budget 🌍 Work remotely anywhere in the world for up to 1 month per year 🍕 Free lunch and snacks provided in the office. Monthly salary starting from €4000 gross (exact compensation may vary based on skills, experience and competencies). OAG is committed to creating an inclusive workplace where everyone feels valued and able to perform at their best. We welcome applications from people of all backgrounds and experiences. If you require reasonable adjustments at any stage of the recruitment process, please let us know — we’re happy to have an open conversation about how we can support you. Apply To This Job