Working Student

adjoe is a leading mobile ad platform developing cutting-edge advertising and monetization solutions that take its app partners’ business to the next level. Our unique ad unit Playtime has made us one of the fastest-growing ad platforms and top-ranking user acquisition sources for app publishers worldwide (ranked #1 for growth in the AppsFlyer Index). And that’s just the start: We’ve just launched our programmatic in-app platform in order to disrupt the status quo of mobile ad monetization. Again. Home to an advanced tech stack, powerful financial backing from Bertelsmann, and a long-term growth mindset, adjoe is part of the AppLike Group ecosystem. A hub of disruption and thought leadership in the app economy, with a driven and dynamic workforce to be reckoned with. Be the next tech-driven, ambitious talent to join our growing teams Meet your Team: Rewarded Solutions Our Rewarded Solutions team develops the technology behind adjoe's innovative rewarded engagement products that serve over 57 million daily mobile users. The team’s tech stack consists of three major components: native Android and iOS SDKs written in Java/Kotlin and Swift handling complex engagement flows; widely customizable offerwall applications built with React TypeScript; 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 monetizers in this industry-leading technology. As a Working Student - Quality Assurance, you will support our team in ensuring that the solutions we deliver meet their intended purpose. You will help verify requirements, assist in finding and tracking bugs, and contribute to validating documentation for new features. This is a perfect opportunity to gain hands-on experience in software testing and see how modern software products are built and maintained. What You Will Do: Support Manual Testing: Assist the team by manually testing new application features (for both mobile and web) following existing test plans and checklists. Bug Reporting: Learn how to clearly and effectively identify, document, and report bugs you discover using our bug-tracking tools. Learn Test Automation: Get exposure to our test automation frameworks. You will start by helping to modify and update existing automated tests under the guidance of senior engineers. Documentation: Help review and verify user guides and other relevant documents to ensure new features are clear and understandable. Communicate & Collaborate: Work closely with developers and other QA team members to understand requirements and report your findings. Test Management: Use our test management tools to execute test cases and track your results. Learn the Domain: Actively learn about our products and business to understand what you are testing and why it matters. Who You Are: Education: You are currently enrolled as a student (Bachelor's or Master's) in Computer Science, Business Informatics, or a similar technical field. Mindset: You have a curious and analytical mindset with a natural talent for finding issues. You have a strong attention to detail and a passion for quality. Technical Interest: You have a basic understanding of how software is built (perhaps from university projects) and are eager to learn about testing web applications, mobile apps (Android/iOS), and APIs. Experience: No prior professional experience is required Any experience from internships, personal projects, or university courses related to software development or testing is a big plus. Communication: You have good verbal and written communication skills in English (our team language). Organisation: You are reliable, self-organized, and able to manage your tasks alongside your university studies. Nice to have: You have a general knowledge of test case writing. Nice to have: You have experience in using Jira and Testmo. Fuel for the Journey: Benefits to Support Your Ambitions Live Your Best Life, at Work and Beyond: We work in a hybrid setup with 3 core office days, plus flexible working hours. Enjoy a lot of vacation days, hybrid work model, free access to an in-house gym with lots of different fitness classes and mental health support through our Employee Assistance Program (EAP), and many other benefits 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. Skip writing cover letters. Tell us about your most passionate personal project, your desired salary and your earliest possible start date. We are looking forward to your application We welcome applications from people who will contribute to the diversity of our company.Believe in better adtech and build it. That’s the adjoe manifesto. Our investment is powered by media giants Bertelsmann. Our brains are powered by our love for a challenge. Our mission is powered by building better and bolder ad technologies. And our home is in Hamburg, Germany – in the applike group. Interested in joining our growing international team?