Senior Mobile Developer (f/m/d)

adjoe is a leading mobile ad platform developing cutting-edge advertising and monetization solutions to meet the diverse needs of app publishers. Being part of the applike group ecosystem plus the significant financial backing from Bertelsmann empowers us to do this. At adjoe, we are proud of our advanced tech stack and dynamic and innovative workforce.

Meet Your Team: Anti-Fraud Solutions

Industry experts report that 20 percent of global mobile ad spend can be identified as fraud. adjoe’s Anti-Fraud team has both validated this number and prevented fraudulent users from entering partners’ ad spend.

The team’s software includes two major components. 1) A distributed backend system with modern cloud infrastructure that provides different interfaces to partners. 2) A unique mobile SDK that analyzes device features to detect modifications via xposed or magisk.

With no one-size-fits-all solution, the Anti-Fraud team works with a large set of features. From detecting attempts based on data with static patterns, using proprietary solutions to detect software manipulation, marking network traffic abnormalities, and identifying when to warn or even block requests.

Join a team that is excited about the latest technologies and is highly interested in data, security, cloud computing, and mobile operating systems. Not to mention a team that celebrates many awards for leading the way in fraud prevention.

• Work on our iOS and Android SDKs that run on tens of millions of devices every day.


• Work closely with Backend and QA engineers to deliver necessary features


• Collaborate with other teams contributing to the same project to align on best practices and architecture


• Become a go-to expert for the team when it comes to platform-specific capabilities


• Investigate ways users can break or fool our fraud prevention methods in our SDKs

• You have a degree in computer science (or a similar field) and 4 years of combined work experience in iOS and ideally Android development


• You have good knowledge of Swift and ideally Java/Kotlin


• You are proficient in both iOS and ideally Android -app, -operating systems, -and service life cycles


• You keep up to date with trends and changes in mobile development


• Optional: SDK development experience

• 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.