Senior SDET – Investment Banking (API & Trading Systems)Location: Warsaw - Flexi-HybridContract Type: B2BRate: Up to 2000 PLN/dayWe’re working with a leading global investment bank on a high-impact project to upgrade their middle office risk system. This platform supports millions of trades daily across FX, equities, and derivatives, and the team is looking for a skilled SDET to join their growing testing function.What You’ll Be Working On API testing for middle office trading systems Designing and implementing automated test frameworks (Java, Selenium, Cucumber) Functional and performance testing of trading applications Collaborating with developers, BAs, and traders to validate business logic and trade lifecycle flows Exploring GenAI/LLM tools for future testing innovation What We’re Looking For 4–8+ years of experience in test automation, ideally in banking or financial services Strong Java skills and hands-on experience with Selenium, Cucumber, JMeter, Postman, and SoapUI Solid understanding of the trade lifecycle, OTC derivatives, and regulatory frameworks (EMIR, Dodd Frank, FRTB) Experience with CI/CD pipelines (Jenkins, Azure DevOps), SQL, Unix scripting, and Git Exposure to Kubernetes, Docker, and cloud-based microservices environments Bonus: Experience with GenAI tools or smart test design using LLMs Interview Process2 rounds: Technical deep dive Team fit and soft skills