About this role
Senior Quality Assurance Engineer (Backend) We are looking for a **Senior Quality Assurance Engineer (Backend)** to join our BUX team based in **Amsterdam**. Our engineering team sits at the heart of the company. We have a well-rounded team that cares about building great products that matter. You'll be part of a modern fintech company where you can try things, break things, fix them, and learn fast. Your work is visible, your input matters, and you help shape both the product and how we build it. We stay close to what's happening in the world of investing and fintech, and we share what we learn. It's a place where you can stretch your skills, contribute to something real, and grow alongside people who take their craft seriously and enjoy building things together. #### **What you will do** In a fintech environment, quality is not just about catching bugs; it's about ensuring financial accuracy, maintaining regulatory compliance, and safeguarding our users' trust. You'll play an active hands-on role in upholding quality across the backend services that power our platform. As a Senior Quality Assurance Engineer for our App Backend team**,** your job is to get things done. This could mean: * Design, develop, and maintain automated tests (integration, end-to-end, regression) for backend REST services * Execute manual and exploratory testing where automation is not feasible * Help build and mature QA processes, standards, and definition of done within the squad * Participate in design reviews for owned backend features to provide a QA perspective early in the development cycle * Monitor and track key quality metrics, test coverage, and defect trends for backend services * Perform bug triage, reproduction, and prioritisation with development teams * Integrate automated regression, smoke, and integration test suites into CI/CD pipelines (GitHub Actions) * Support test environment setup, data provisioning, and maintenance in coo...