Senior Test Automation Engineer

HelloPrint is on a mission to become the world's leading infrastructure for customizable printed products. From our offices in Rotterdam and Valencia, 100+ professionals from 20+ nationalities are building an AI-first company that scales output faster than headcount. We are rebuilding the platform: ecommerce, APIs, internal tooling, all under active development at speed. Speed without quality is just faster breakage. This role exists to make fast releases safe, and to turn QA from a bottleneck into leverage. ### **About the Role** At HelloPrint, our engineering teams are accelerating development cycles using autonomous and AI-assisted tooling. While AI makes generating code exponentially faster and cheaper, verifying that core business workflows and transaction guarantees remain intact stays just as complex. Without a rock-solid testing harness, higher code velocity simply translates to higher operational risk. We are looking for a **Senior Test Automation Engineer** to take technical ownership of our automated **Platform Test Harness**. In this role, you will design, build, and maintain the end-to-end and contract-testing architecture that enables our teams to develop with AI fearlessly, safeguarding our core customer and commerce flows under continuous delivery. ### **What You Will Do** * **Architect the Platform Test Harness for AI Velocity:** Design, implement, and maintain deterministic E2E test suites using **Playwright** and **TypeScript**. Build the automated guardrails required to safely absorb high-frequency, AI-assisted code generation without regression. * **Implement Contract Testing & Boundary Validation:** Establish strict API schema validations and contract tests (REST / JSON Schema) at service boundaries to prevent schema drift between our Product Catalog Engine, checkout services, and partner integrations. * **Shift-Left Quality in AI Workflows:** Partner with Product Owners and software engineers during sprint refinement to define explicit boundary contracts and edge cases upfront—embedding a clear _Definition of Done_ before feature code or AI prompts are executed. * **High-Speed CI/CD Orchestration:** Maintain and optimize GitHub Actions test pipelines, focusing on smart test parallelization, artifact caching, and keeping feedback loops under 10 minutes. * **Accumulate Platform Memory:** Partner with engineering during post-incident reviews to ensure every confirmed production defect results in an automated test that makes that specific failure path impossible to repeat silently. * **Collaborate & Mentor:** Pair with our QA Automation Engineer and mentor software engineers in writing effective integration tests, adopting TDD habits, and reviewing AI-generated test scaffolding.