QC Engineer (Lumin AG)

Responsibilities

• ◦ Review specs, designs and requirements to understand intended behaviour; raise gaps and ambiguities early. 
• ◦ Define test strategies and plans covering manual and automated testing, prioritised by risk. 
• ◦ Create and execute manual test cases (functional, regression, exploratory) for the editor, templates, documents, workspaces/spaces, permissions, collaboration and send-to-sign flows.
• ◦ Test AI features (prompt-based generation, AI editing via chat, PDF → document conversion): run scenario sets, evaluate output quality and report issues, with guidance from the team where AI-testing experience is limited. 
• ◦ Design, implement and maintain Playwright automation (smoke and regression), keeping the suite stable and fast; investigate failures and flaky tests. 
• ◦ Maintain test cases in Notion and keep them in sync with automation and feature changes. 
• ◦ Run and report on test executions (CI pipelines, TestDino), and triage and track bugs in Linear. 
• ◦ Work closely with developers, Product and Design: help define acceptance criteria and verify stories meet quality standards before release. 
• ◦ Use AI tools to speed up test design, automation and analysis, and help the team improve AI-assisted QC workflows. 
• ◦ Take part in refinement, planning, and retrospectives, giving quality-focused feedback. Join accessibility and performance testing when the feature requires it.

Your skills and experience

Must have
• ◦ 2+ years in a software testing role, covering both manual web testing and test automation. 
• ◦ Solid understanding of SDLC/STLC and testing methodologies (test levels, static/dynamic testing, risk-based testing, exploratory testing). 
• ◦ Able to write test plans, test cases and test reports, and to write clear, reproducible bug reports. 
• ◦ Experience testing complex web applications across multiple browsers and viewport sizes. 
• ◦ Proactive and self-motivated; can work independently, learn fast, and stay effective in a fast-changing environment with evolving requirements. 
• ◦ Good English communication (spoken and written) for working in a global team; able to work with developers, the Leader and other stakeholders
• ◦ Uses AI assistants (Claude, ChatGPT, Cursor or similar) in daily work for drafting test cases, generating test data, writing/refactoring scripts and analysing failures — and always reviews and verifies AI output before relying on it. 
• ◦ Comfortable writing clear prompts/context for AI tools and following team skills/conventions for AI-assisted work.

Nice to have
• ◦ Hands-on automation experience with Playwright (preferred), Cypress or Selenium; familiar with TypeScript/JavaScript and the Page Object pattern.
• ◦ Intermediate+ level: expected to be able to contribute to the existing suite within the first months. 
• ◦ API testing with Postman or equivalent (REST/GraphQL); understanding of CI/CD pipelines (GitHub Actions) and reading test reports / traces.
• ◦ Experience testing AI/LLM-powered products: 
• ◦ Understands that LLM output is non-deterministic and that a response can look fluent yet be wrong (hallucination, missing or altered clauses, wrong format, off-topic output, ignoring instructions). 
• ◦ Able to evaluate AI output against a rubric (accuracy, completeness, instruction-following, formatting, safety) rather than only “it responded”. 
• ◦ Can design test scenarios and datasets for AI features: varied prompts, edge/adversarial inputs, repeated runs of the same input, before/after comparison when a prompt or model changes. 
• ◦ Reports AI defects with enough evidence to debug: prompt, input document, expected vs actual, frequency (e.g. 2/5 runs), and trace/session ID when available. 
• ◦ Familiar with LLM-evaluation/observability tools (e.g. Langfuse); basic ability to read Python. 
• ◦ Experience with real-time collaborative editors, e-signature / document workflow products, or contract/legal content. 
• ◦ Experience with feature-flag-based releases (e.g. GrowthBook), i18n/multilanguage testing, or role/permission-based products. 
• ◦ ISTQB certification. 
• ◦ Familiar with accessibility and performance testing basics.