Senior QA Engineer

Location: Warsaw (On-site / Hybrid) Company: GB2B Industry: iGaming / Platform Development Reports to: Technical Project Manager

GB2B builds and operates iGaming platforms in regulated markets, where quality, stability, and compliance are non-negotiable.

We’re looking for a Senior QA Engineer to ensure features are validated, compliant, and production-ready across backend, frontend, and UX deliverables.

Responsibilities

• Perform manual, regression, and validation testing across frontend, backend, and platform features
• Validate functionality against business, technical, and regulatory requirements
• Execute compliance and regulated-market test scenarios
• Collaborate with backend, frontend, UX, and DevOps teams to ensure quality by design
• Review requirements, user stories, and acceptance criteria for testability and clarity
• Identify defects, risks, and edge cases early in the delivery lifecycle
• Support release readiness and production validation activities

Requirements

• Proven experience as a Senior QA Engineer (manual-focused or hybrid)
• Strong understanding of backend APIs, data flows, and frontend behavior
• Experience testing complex platforms, admin panels, or data-heavy systems
• Familiarity with regulated environments (iGaming, fintech, payments, etc.)