Senior Test Automation Engineer

Helloprint; Rotterdam; On-site; EUR 50,000 - 67,000; Full time

Benefits offered by this job

Gym access

Sports discount

Company events

Healthy meals

Job summary

HelloPrint in Rotterdam seeks a Senior Test Automation Engineer to own the Platform Test Harness, designing and maintaining end-to-end and contract tests for AI-driven development.

You will optimize CI/CD pipelines with GitHub Actions, enforce API contracts across microservices, and mentor engineers in robust integration testing.

With 5+ years in software testing, you will help ensure fast, safe releases from our Rotterdam HQ, shaping the future of AI-first QA at HelloPrint.

Qualifications

• 5+ years of software testing and automation experience (SDET/QA Automation).
• Strong hands-on with modern web apps and distributed APIs.
• Experience with building robust automated test suites in TypeScript/JavaScript.

Responsibilities

• Architect and own the Platform Test Harness for AI-driven velocity.
• Implement and maintain end-to-end and contract tests across services.
• Shift-left quality by defining explicit boundary contracts with product and engineering.
• Optimize and maintain CI/CD test pipelines (GitHub Actions) for fast feedback.

Tools

Playwright

Cypress

GitHub Actions

Job description

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.

What Success Looks Like After 12 Months

• Critical Journey Protection: 100% of primary commerce flows are guarded by automated E2E tests in CI.
• Fast & Stable Pipelines: CI test suite execution completes in under 10 minutes with a test flakiness rate below 1%.
• Defect Shift: At least 80% of functional regression issues are caught in automated CI runs before reaching staging or production.
• Compounding Resilience: Every resolved high-priority incident has an associated regression test in the repository, making the harness the living memory of the platform.

What We Are Looking For

• Experience: 5+ years of software testing and automation experience as an SDET or QA Automation Engineer working with modern web applications and distributed APIs.
• Practical AI Perspective: A sharp, realistic perspective on how AI tools impact modern software engineering—understanding why accelerated code generation elevates the need for deterministic test suites, strict interface contracts, and fast feedback loops.
• Core Tooling: Hands-on experience building robust, flake-free automated test suites in TypeScript / JavaScript using Playwright (or Cypress), alongside API testing frameworks.
• API & Contract Testing: Practical experience validating RESTful APIs, webhooks, and JSON data contracts across microservices.
• CI/CD Practicality: Working knowledge of GitHub Actions (or equivalent CI systems), with an emphasis on parallel test runners, containerized test execution, and pipeline debugging.
• Mindset: AI-first thinking, high autonomy and ownership, and office-first commitment in Rotterdam HQ.

We encourage applications even if you do not meet 100% of the listed points. Relevant practical experience and problem-solving skills matter most.

This role is not for you if you

• See QA as the step that happens after the "real" work;
• Want a fixed checklist and no ownership of strategy;
• Got into automation because it was on a job spec, not because manual repetition genuinely bothers you;
• Need heavy process to move;
• Would rather work from home than sit next to the team you are gatekeeping for.

What we offer

• Room to grow: opportunities develop fast, within your role and across HelloPrint
• The team: 100+ people from 20+ nationalities who build at a pace most companies cannot match. Rotterdam is not a compromise. It is where the work happens.
• Real impact: shape the future of a high-growth, AI-driven company where your ideas land in production the same week.
• Full autonomy from day one: no roadmap to follow, no brief to wait for. You see the problem, you build the solution, you own the outcome.
• Hello-Benefits: including 24/7 HelloFit gym access, UrbanSportsClub discount, the best events and company-sponsored healthy meals every day

• Base salary: 4500-6000 gross per month, depending on seniority and experience

Ready to build something? We need bold thinkers, fast executors, and AI-first problem solvers. If that sounds like you, Let's redefine an industry together.

At HelloPrint, we believe diversity makes us better. We're building a workplace where everyone can be themselves, grow, and do their best work regardless of background, identity, or perspective. We welcome applicants from all backgrounds.