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senior

QA Engineer

Windmill Digital
format:Remote
playwrightcypressseleniumtypescriptjavascriptpythonjava
ai agentsprompt engineering
experience4+ years
> full description

We’re looking for a quality-focused engineer who combines a solid manual testing foundation with hands-on automation experience and a growing interest in AI evaluation. You care deeply about how systems behave, you’re not satisfied with surface-level testing, and you’re excited about what modern QA looks like in an AI-driven world.

What you’ll do

  • Design and execute evaluation strategies for AI-powered features, including LLM-based flows, recommendation engines, and decision logic.
  • Validate AI outputs for correctness, consistency, bias, hallucination risk, and edge cases — defining clear qualitative and quantitative acceptance criteria.
  • Perform deep manual, exploratory, and scenario-based testing across the product, from AI-driven flows to core application functionality.
  • Build and maintain automated UI and API test suites, and keep them running reliably in CI/CD.
  • Build and maintain automated evaluation and regression pipelines for AI-enabled systems.
  • Identify non-determinism and reliability risks specific to AI systems and propose practical mitigations.
  • Partner closely with engineers and product teams to improve testability, observability, and overall release quality.
  • Performance, load, and security testing.

What we’re looking for

  • Sharp analytical thinking and attention to detail — you notice what others miss.
  • 4+ years of hands-on manual testing experience, including exploratory testing, test planning, and writing acceptance criteria for complex or enterprise systems.
  • 4 +years of test automation experience using frameworks such as Playwright, Cypress, or Selenium — covering UI and/or API layers.
  • Confident writing and maintaining test code in TypeScript/JavaScript, Python, Java.
  • Demonstrated ability to own a full test strategy, not just execute test cases.
  • Strong understanding of AI system behavior, including non-determinism, prompt sensitivity, and the unique challenges of validating model outputs.
  • Reads backend code comfortably to debug test failures and understand system behavior.

Nice to have

  • Experience with AI evaluation frameworks, prompt testing, or model validation techniques.
  • Familiarity with agentic QA concepts and AI-assisted testing workflows.
  • Hands-on SDET experience — from framework design to internal tooling.
  • Exposure to observability tooling and how it supports quality in production systems.

What We Offer

  • Competitive compensation and benefits package.
  • Remote-first work with a flexible schedule.
  • Opportunities for professional growth, training, and certifications.
  • A dynamic environment where innovation, security, operational excellence, and cutting-edge ML technologies are highly valued.
  • Projects that span cutting-edge AI, UX, fintech, and healthtech domains.
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