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 seeking a skilled SDET to join their expanding 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 innovationWhat We’re Looking For • 4–8+ years of experience in test automation OR manual testing, 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