[Hiring] Senior QA Specialist @Poland and Central-Eastern Europe

Role Description

We are looking for a Senior Quality Engineer to join a small, senior team modernizing a large portfolio of legacy desktop business applications into modern web solutions. The applications belong to an established financial software platform. Migration is carried out with AI coding agents inside a structured, gated workflow. In this role you will own quality and verification.

• Designing the verification approach for migrated applications, from test strategy through acceptance.
• Helping define behavioural specifications and keep them testable and traceable to the source system.
• Building automated quality gates into an AI-assisted development workflow.
• Testing REST APIs and web front ends, including data validation against the legacy system.
• Measuring and reporting on test effectiveness, review effort and quality metrics.
• Running acceptance testing with domain experts and recording results in agreed formats.
• Preparing and running knowledge transfer sessions for the client’s engineering team.

Qualifications

• 5+ years in quality engineering, including verification of legacy system migrations or rewrites, such as characterization testing, golden master testing or parity testing.
• Specification-based test design and traceability, for example with BDD, acceptance criteria or requirements-based testing.
• Strong test automation skills in TypeScript.
• REST API testing, including contract and schema validation and data-driven tests.
• Web E2E testing, with Playwright preferred.
• Good SQL skills and experience validating data in business applications.
• Hands-on use of AI coding tools (such as Claude Code, Cursor or GitHub Copilot) in QA work, and the ability to critically evaluate AI-generated code and tests.
• Experience with mutation testing, fault injection or other methods of measuring how effective tests are.
• Testing data-intensive business systems, ideally in finance or ERP.
• Fluent English.
• Practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery.
• Work from the European Union region and a work permit are required.

Requirements

• Nice to have experience evaluating LLM output, such as eval harnesses or LLM-as-judge setups.
• Snapshot, approval, visual regression or property-based testing.
• Testing multi-tenant or single-tenant-per-customer deployments.
• Performance and batch processing testing.
• Mutation testing tools such as Stryker or PIT.
• Working knowledge of Docker and CI/CD pipelines, and setting up isolated test environments.
• Experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work.
• Interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches.

Recruitment Process

• CV review
• HR call
• Interview
• Client Interview
• Decision