Software Engineer in Test

Software Development Engineer in Test

Reference: BH-384p

Job Type: Permanent or Contract

Location: Poland, anywhere

Salary: 25,000PLN to 27,000PLN per month

About The Client:

Our client is a product company focused on building tools that help people work with data more easily in web applications. Their flagship product enables users to view, edit, and manage complex information in a familiar spreadsheet-like format. It’s used by organisations around the world to power data-heavy workflows across a wide range of industries.

Key Responsibilities

• Act as the last line of defence before release, owning final quality validation and confidence
• Perform hands-on manual and exploratory testing of every release candidate, treating each as production-ready
• Validate real-world integration scenarios across React, Angular, and Vue wrappers
• Design and execute adversarial testing, pushing edge cases and breaking assumptions
• Build and maintain Playwright test suites for end-to-end and cross-browser coverage
• Implement and maintain visual regression testing (tool-agnostic: Argos, Percy, etc.)
• Ensure public API and TypeScript definitions are stable, detecting breaking changes before release
• Own accessibility (WCAG) end-to-end, including audits, screen reader testing, and compliance validation
• Validate releases across multiple environments, frameworks, and build tools
• Test and maintain LTS branches, ensuring backported fixes are reliable
• Investigate issues deeply and, where appropriate, fix bugs and write tests directly in the codebase
• Collaborate closely with engineers as a co-owner of quality, not a downstream gate

Essential Experience

• Experience with visual regression/snapshot testing (Argos, Percy, Chromatic, Applitools, etc.)
• Strong experience in QA / SDET roles, ideally within JavaScript libraries, developer tools, or component libraries
• Proven ability in manual and exploratory testing, especially for release validation
• Strong hands-on experience with Playwright for end-to-end testing (must-have)
• Solid TypeScript skills (mid-level), with the ability to validate public APIs and detect type regressions
• Experience testing across modern JS frameworks (React, Angular, Vue), at least at the integration/testing level
• Experience working with CI/CD pipelines and maintaining test infrastructure
• Strong understanding of cross-browser and cross-environment testing challenges
• Demonstrated experience with accessibility (WCAG), including manual testing and audit processes
• Ability to read, debug, and work within a codebase to investigate issues
• Ownership mindset, comfortable being accountable for the final product quality

Desirable Experience

• Experience producing VPAT / ACR documentation for enterprise accessibility compliance
• Background working on design systems, component libraries, or API-driven products
• Experience testing across multiple framework wrappers or SDKs
• Familiarity with Jest or Jasmine for unit/integration testing
• Experience with modern build tools (Vite, Webpack, esbuild)
• Comfortable using AI-assisted coding tools (Cursor, Claude Code, Copilot, etc.) to:
• investigate bugs
• write tests
• improve development efficiency
• Experience contributing small fixes or test improvements directly to production codebases

Job Benefits

• Be part of a small, senior team with global impact
• Flexible hours and generous time off
• Remote, hybrid, or Gdynia office
• Competitive pay with biannual reviews
• Choose your own IT equipment
• Learning budget + conference support
• Private healthcare, life insurance, Multisport card
• English lessons during work hours
• Office perks: snacks, drinks, weekly lunch
• Team retreats and offsites
• Collaborative, growth-focused culture