Software Developer - Working Student (f/m/d)

adjoe is a leading mobile ad platform developing cutting-edge advertising and monetization solutions that take its app partners’ business to the next level. Part of the applike group ecosystem, adjoe is home to an advanced tech stack, powerful financial backing from Bertelsmann, and a highly motivated workforce to be reckoned with.

Meet Your Team: Rewarded Solutions

The Rewarded Solutions Team creates unique software solutions for app and game developers with a focus on putting the end-users’ needs first. Instead of traditional monetization mechanisms, Playtime is an engaging experience in which users can play and earn rewards for various new mobile games. To predict which mobile game will best suit a user, our product incorporates algorithms powered by machine learning.

To build this rewarded experience, adjoe’s backend reliably handles more than 200 million users – remaining stable despite impressive growth in the user base. And imagine this: adjoe’s Golang event consumer applications assign rewards equivalent to 700 months of time spent in Playtime every day to its users.

The software depends on two main components.1) adjoe’s Android mobile SDK – written in a combination of Java and Kotlin – which can be bundled by developers in their apps.2) The team’s highly scalable Golang backend, which is hosted on AWS and is otherwise responsible for developing a modern React (TypeScript) dashboard that provides adjoe’s clients and Business team colleagues with fast-loading insights.

What Will You Do:

• You will contribute to building and improving the highly scalable Golang backend hosted on AWS.


• You will assist in the development and maintenance of adjoe's mobile SDKs for Android (Java/Kotlin).


• You will support the development and maintenance of Golang microservices.


• You will help with bug fixing and feature implementation for both mobile SDKs and backend services.


• You will collaborate with the team to ensure stable operation of the backend, which handles over 200 million users.

Who You Are:

• You are enrolled in a university program in Computer Science, Informatics, or a related field.


• You have proficiency in high-level programming languages, e.g., Java, Go, Kotlin.


• You have excellent command of spoken English.

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 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.

adjoe is a leading mobile ad platform developing cutting-edge advertising and monetization solutions that take its app partners' business to the next level. Part of the applike group ecosystem, adjoe is home to an advanced tech stack, powerful financial backing from Bertelsmann, and a highly motivated workforce to be reckoned with.