SDET (Software Development Engineer in Test)/QA Engineer Krakow or Warsaw: Hybrid, 3 days p/w in office B2B Contract: 6 months (with possible extensions)  We are looking for a SDET/QA Engineer to work with a leading financial services company in Poland. This role will see you working on an award-winning digital platform enabling the rapid delivery of innovative technologies, impacting over 2 million users. What You’ll Do Define and implement testing strategies to ensure full coverage across platforms Develop scalable test automation for API and UI Create test automation with Python, and testing backend services and proxies Plan and execute performance testing, and incorporate performance testing into CI/CD workflows Optimise performance and reliability for hybrid (on-prem/cloud) applications Manage and maintain large-scale test data across projects Enhance monitoring and alerting through automated checks Collaborate with developers, SREs, and security teams to embed quality and observability Mentor team members in automation, AI-driven testing, and performance engineering  What We’re Looking For 7+ years' experience in test automation Heavily experienced in testing primarily with Python, as well as Java Experienced in Functional Testing – API, UI Experience creating and running API tests in Java Environment: ideally experienced working on platforms in banks/financial services, but open to experience with platforms in other domains Basic knowledge of Shell scripting for CI/CD Basic knowledge of networking: HTTP/s protocols, reverse proxy and load balancers Experienced with frameworks such as: Pytest, JUnit/TestNG, and/or RestAssured  Why Apply? Join a high-performing team at the heart of investment banking technology Join a crucial team responsible for impacting an award-winning digital platform Opportunity to work with modern technologies and frameworks Hybrid flexibility – typically 3 days in office, with flexibility around hours (later start/later finish). Clear, efficient 2-stage interview process.