QA Engineer

CKSource is the company behind CKEditor, a modern TypeScript rich text editor used by millions worldwide. It is part of Tiugo Technologies, a launchpad for developer platforms including CKEditor, TinyMCE, ButterCMS, and Uploadcare, powering millions of software applications and websites.

• 2+ years in QA with hands-on automation experience in JavaScript/TypeScript
• Solid practical JavaScript skills including async code, HTTP clients, and adapting existing code
• Hands-on experience writing E2E tests in modern frameworks (Cypress or Playwright)
• Hands-on experience with API testing using tools like Postman, Bruno, Insomnia; ability to read API documentation (OpenAPI/Swagger) and write scripted API tests
• Working knowledge of Docker and Node.js to run services locally and debug containerized environments
• Solid understanding of modern web apps: SPA, REST APIs, HTTP, JWT, WebSockets
• Experience leveraging AI-powered tools for test generation, edge case analysis, or task automation
• Fluent in Polish and good working proficiency in English (B2+ level)
• Curiosity and critical thinking; proactive problem-solving

Nice to have:

• Projects portfolio on GitHub
• Experience with AWS or other cloud platforms
• Familiarity with CI/CD pipelines (GitHub Actions, CircleCI)

• Own end-to-end testing of complex back-end and cloud services running on AWS, Docker, and VM setups where needed
• Design, write, and adapt automation scripts for API and environment testing across SaaS and on-premises deployments
• Validate integrations between CKEditor Cloud Services and components like CKEditor 5 and Customer Portal
• Run performance, stress, and regression testing on CKEditor ecosystem services
• Partner with developers to reproduce, triage, and resolve customers' technical and integration issues
• Proactively identify quality risks and propose improvements to test coverage, tooling, and CI reliability