Senior QA Engineer; f​/m​/d

Overview

adjoe is redefining the future of mobile ads. Powered by advanced AI, first-party data and world-class engineers, we’ve perfected the offerwall experience for monetizing and scaling app publishers with solutions like Playtime and Arcade – now the fastest growing rewarded advertising channel globally – driving incremental engagement, retention, and revenue. At the same time, we’re breaking into programmatic advertising with the intelligent bidding system of adjoe Ads.

Together, this ecosystem connects app developers to over 600 million users worldwide for scalable growth. Backed by a $100 million investment from Bertelsmann and operating from offices in Hamburg, Boston, Singapore, and Tokyo, adjoe is defining the next stages of app and ad experience – right now.

Our Rewarded Solutions team develops the technology behind adjoe's innovative rewarded engagement products that serve over 57 million daily mobile users.

The Rewarded Solutions team develops the technology behind adjoe's innovative rewarded engagement products that serve over 57 million daily mobile users. Mobile Integrations is responsible for the native Android and iOS SDKs written in Java/Kotlin and Swift that handle much of the complex engagement flows. On top of the SDKs are widely customizable offerwall applications built with React Type Script; and a highly performant Golang backend hosted on AWS that processes millions of events hourly.

Our system matches each game with its ideal users, delivering rewards optimized for satisfaction through data processed via AWS Athena, Kafka, Spark, S3, and MySQL.

For team members, this means having state-of-the-art resources to build engaging rewarded ad experiences that seamlessly integrate into the world’s top apps while delivering exceptional results for advertisers and monetize rs in this industry-leading technology.

• Lead the implementation of automation testing within our mobile development workflows — not just designing the framework, but defining and executing comprehensive regression testing scenarios and embedding automation into our overall QA process.
• Collaborate with cross-functional teams to ensure the highest level of quality across the SDK development lifecycle, integrating automated tests into our CI/CD pipeline.
• Work closely with Product Leads and Engineers to design, document, and execute detailed test plans and strategies that support fast, reliable delivery of new features.
• Conduct manual testing when necessary, validating test cases and analyzing results to ensure the stability of our APIs, and SDK functionality.
• Own defect management, including reporting, triaging, and verifying fixes for bugs and errors across releases.
• Take ownership of post-release validation, ensuring that updates and integrations perform flawlessly in production.
• Join an international, English-speaking team committed to scaling our adtech platform beyond hundreds of millions of monthly active users.

• You have 3 years of experience as a Mobile Quality Assurance Engineer or similar, ideally experience with SDK testing
• You are experienced in QA methodology
• You have experience or knowledge of Java or another programming language used in Automation testing
• You have hands on experience with Automation Testing Tools (e.g. Appium, Selenium, Java, Playwright)
• You are familiar with Agile frameworks and regression/smoke/LIT testing
• You are able to document and troubleshoot errors
• You have working knowledge of test management software (e.g. Test Mo, qTest, Cypress, Zephyr) and SQL
• You have excellent communication skills
• You pay attention to detail
• You have an analytical mind and problem-solving attitude
• You have strong organizational skills
• Plus:
  You have experience with (mobile) games QA

• 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…