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Senior QA Engineer (f/m/x)

Hamburg
Full-time
Permanent employee

Your Mission

This is a company built for growth.

When you join exmox, you're stepping onto a global, highly competitive playing field, solving real problems in environments that push you beyond your comfort zone. We move fast, cut the noise, and focus on what actually matters, because in our industry, speed wins.
With 50M+ platform downloads, we're rapidly scaling one of the most exciting innovations in mobile gaming: a rewarded user engagement and acquisition platform that helps players discover, and engage with games they enjoy - creating lasting value for both players and gaming studios.

As Senior QA Engineer (f/m/x) you won't just be running test cases at the end of a sprint. You'll own quality across our features, building the automation and quality gates that let us ship fast and ship right, working close to engineering and product and seeing the impact of your work in production. At exmox, we're embracing AI as part of how we work, not just what we build. We use AI tools to work smarter, cut down on repetitive tasks and spend our time where it actually moves the needle. If that mindset speaks to you, you'll fit right in.

If you're excited by complex systems, high traffic, data-driven decisions, and the chance to grow by solving challenging problems, we want to hear from you.

What You'll Own:
  • Test strategy & planning: You design test strategies and test plans that fit the product, the risk and the delivery speed. You adjust them as priorities shift, so testing speeds delivery up instead of slowing it down.
  • Risk-based quality in continuous deployment: You decide where testing effort pays off most. You combine automated checks, exploratory sessions and targeted regression so we can release often and with confidence.
  • Functional & API test automation: You build, extend and maintain our automation with Playwright (Python) and API test suites. You also own the infrastructure behind them: test environments, test data, reporting and pipeline integration.
  • CI/CD integration: Your tests run in our CI/CD pipelines as fast, reliable quality gates. They're stable and quick, and people trust their results.
  • Bug hunting & defect management: You find, document and track defects, including the subtle ones that only show up with a specific timing, a specific piece of data or a user who does something unexpected. Your feedback is early, clear and easy for developers to act on.
  • Collaboration & QA processes: You join refinements, product and tech discussions and collaborate closely with developers and PMs. You question requirements before they turn into bugs, and you push our QA methods, practices and workflows forward.
What Success Looks Like:
  • Releases go out quickly and reliably, and the team trusts the quality gates you've built.
  • Developers and product managers bring you in early because your input saves them time and trouble.
  • The automation suite is fast, stable and maintainable, and it catches regressions before users do.
  • Test strategies are clear and match the risk. Everyone knows what's covered, what isn't and why.
  • You turn testing challenges into structured, repeatable processes that support fast, safe and reliable releases.
  • You've made quality a shared responsibility across the tech team, not something QA handles alone.

What You Bring

  • Senior QA experience: You have 5+ years of hands-on QA experience with backend, frontend and API-driven systems, in fast-moving teams that ship continuously.
  • High-velocity, high-quality delivery: You've worked with continuous deployment, and you know how to adapt test strategies as scope, risk and timelines change.
  • Strong test design toolkit: You're confident with a wide range of test methods and techniques, such as risk-based testing and exploratory testing, and you know when each one is the right tool. You also know about AI testing approaches.
  • Functional & API automation expertise: You have deep hands-on experience with Playwright in Python and API test automation, especially GraphQL. You design frameworks that scale and stay maintainable.
  • Test planning & efficient delivery: You're great at planning, prioritizing and scoping test work so it delivers the most value within real-world time limits.
  • A relentless quality mindset: You feel a genuine urge to find the last hidden bug. You're curious, sceptical in a productive way and detail-oriented, and you take full ownership of the quality of what we ship.
  • Problem solving & root cause analysis: You quickly identify issues, dig into logs, data and system behaviour to find the real root cause, and propose effective solutions that stop the problem from coming back, instead of just fixing the symptom.
  • Communication & QA standing: You explain risks and quality trade-offs clearly to developers, product and management. You stand up for quality with confidence and good judgement, and you win people over with arguments rather than blocking them.
  • Tooling & collaboration: You're comfortable with Git and modern branching strategies, and with agile teams that include developers, product managers and DevOps.

How We Win

  • Speed is the feature. Speed beats rocket science. We move fast, test fast, and multiply our pace with AI, because action creates information and small wins compound. A fast failure is a lesson we learn from, a slow one is a problem we can't afford.
  • Focus on the essential. Done is better than perfect. We stay focused on what actually moves us forward and protect people's time from anything that doesn't. We're direct in how we communicate too, no rambling, no unnecessary detail.
  • See it. Own it. Solve it. The first to see it is best placed to fix it. We're not a place for comfort, we're a place for doers. "Not my job" isn't in our vocabulary, if you spot something, you help make sure it gets solved.
  • Respect others. Trust multiplies. Respect is non-negotiable. We disagree with ideas, never with people. Trust here is built the same way it is anywhere, through consistency, a thank you, a moment of listening, and owning your mistakes.
  • Perks that help you focus on what matters. Transport subsidy, learning budget, wellness and gym, workation, bi-weekly team lunches, and more. The perks are great, but the real reason people join and stay is the challenge, the ownership, and the drive to win together.
Please note: this is not a remote only position, we offer you a flexible hybrid model here in Hamburg, Germany - working from home on Mondays & Fridays, coming to the office on Tuesday, Wednesday & Thursday!

About us

At exmox, we are building the next European tech challenger in the user acquisition space.
We are part of the Aonic Group, named one of the top 10 fastest-growing companies in Europe in 2026.
Our ambition is clear: to build a category-leading company through strong execution, continuous improvement, and a relentless focus on performance.
This is not a company built for comfort. We are building for growth, impact, and long-term success.

Equal opportunity, accessibility and data protection

exmox is an equal opportunity employer. We welcome applications from all qualified candidates regardless of gender, age, disability, ethnic or national origin, religion or belief, sexual orientation, or any other legally protected characteristic.If you require any adjustments or accommodations during the recruitment process, just let us know, we are happy to help.Your personal data will be processed in line with our Data privacy statement, which explains how we collect, use, and protect your information during the hiring process.