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The Senior QA Engineer (m/f/d) role at Applike is an on-site position located in Hamburg.

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Senior QA Engineer (m/f/d)

ApplikeHamburg2d ago

JavaTypeScriptReactGoSwiftKotlinAWSRedisKafkaSpark

We are looking for a Senior QA Engineer who takes personal ownership of product quality, ensuring that every solution we deliver is stable, performant, and backed by clear documentation. Your expertise will allow you to navigate complex systems and predict potential points of failure, ensuring we consistently deliver the rigorous, high-quality results our top partners depend on.

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. Join us.

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.

What you will do:

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.

Improve the internal testing infrastructure, including automation and data generation

Constantly review our products against the market. You’ll sift through logs, identify edge cases, and perform competitor benchmarking to suggest product improvements.

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 business model and the mobile advertising industry at large.

Who you are:

You hold a degree in Computer Science (or a related field) and have several years of experience analyzing and testing complex software systems.

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

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

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 settle in and make Hamburg feel like home.

Live Your Best Life, at Work and Beyond: We work in a hybrid setup with 3 core office days, 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.

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.

Senior QA Engineer (m/f/d)

What you will do:

Who you are:

Fuel for the Journey: Benefits to Support Your Ambitions

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