QA Automation Engineer (UI and API) (m/f/d)

What you will do:

• Full-Stack Automation: Develop and maintain end-to-end test suites using Playwright (TypeScript) that cover both complex UI interactions and the underlying API logic.

• API Rigor: Design and execute sophisticated API tests (integration and contract testing) to validate request/response payloads, status codes, and data consistency across our microservices.

• Utilize AI tools to speed up test script authoring, generate synthetic test data, and implement self-healing UI tests.

• Ensure the Offerwall renders perfectly in various web-views and mobile browsers, using visual regression tools to catch UI regressions.

• Verify that frontend actions correctly reflect in our datastores (DynamoDB, Redis, MySQL) by querying databases directly within your test scripts.

• Own the quality gate in our pipeline, ensuring that both UI and API tests provide fast, reliable feedback to the engineering team

• Test and validate the JS-to-Native bridge, ensuring that Offerwall interactions correctly trigger SDK events (e.g., completions, reward pings, and user attribution).

• Design and implement automated testing solutions and coordinate with the infrastructure team to integrate them into the CI/CD build pipeline.

• Go beyond explicit requirements. You will monitor system behavior, including network transfer rates, file size optimization, and database architecture efficiency.

• Take an active role in sprint and release planning. You will highlight missing requirements and identify potential architectural risks early in the lifecycle.

• Maintain a deep understanding of adjoe’s busiess model and the mobile advertising industry at large.

Who you are

• You have 3+ years of experience in QA Automation, with professional-grade proficiency in Playwright and TypeScript/JavaScript.

• You are "fluent" in HTTP. You have extensive experience testing RESTful APIs using tools like Postman, Insomnia, or Playwright’s native API testing capabilities, and you understand how to mock/stub dependencies.

• You don’t just test the "happy path." You look for edge cases in API error handling, latency issues, and complex state changes.

• You actively use AI coding assistants to write cleaner, more efficient test code and stay updated on AI-led QA trends.

• You have extensive experience designing automated tests using frameworks like Testmo, or Playwright, and you are comfortable working with APIs and datastores like MySQL, DynamoDB, and Redis.

• You can translate complex technical bugs into actionable feedback for developers and stakeholders alike, both in writing and in person.

• You naturally probe for what might go wrong. You accurately gauge risks and prioritize issues based on their impact on the business and the user.

• You thrive when imposing order on a team’s workflow, from structuring test plans to ensuring that documentation is comprehensive and accurate.

• You understand the mobile ad-tech industry and adjoe’s business model, allowing you to contribute meaningfully to product strategy.

Fuel for the Journey: Benefits to Support Your Ambitions

Invest in Your Future: Regular feedback and our development program support your growth, helping you expand your skill set and achieve your career goals.
Easy Arrival to adjoe: From signing to settling in Hamburg, we’ve got you covered. Need a visa? No problem. Ready to build your new life and career at adjoe in Hamburg? We support every ambition—from learning German to a relocation bonus that helps you make Hamburg feel like home.
Live Your Best Life, at Work and Beyond: We work in a hybrid setup with core office days on Monday, Tuesday, and Thursday, plus flexible working hours.  Enjoy 30 vacation days, 3 weeks of remote work per year, and free access to an in-house gym with lots of different fitness classes and mental health support through our Employee Assistance Program (EAP).
Thrive Where You Work: Enjoy the Alster lake view from our central office with top-notch equipment, fun open spaces, and a large variety of snacks and drinks.
Join the Community! Participate in regular team and company events, including hackathons and social gatherings. We work together, and we celebrate together, too.