Senior Go Backend Developer (f/m/d)

What You Will Do:

• Contribute to the development of our backend written +99% in Go and maintain our microservice architecture used to communicate with our frontend (based on TypeScript React).
• Use event buses like Kafka and SQS/SNS for reliable asynchronous microservice communication.
• Work in a community of developers, sharing knowledge and contributing to peer code reviews.
• Work with modern columnar databases such as Druid and MySQL, optimizing queries for few-millisecond response times.
• Support partners by providing raw or aggregated data based on their business needs, believing in data transparency and well-documented open APIs.
• Be responsible for collecting billions of daily API events and aggregating them in our Kafka and Kinesis streams for quick querying from the data lake.
• Be part of an international English-speaking team dedicated to scaling our adtech platform beyond hundreds of millions of monthly active users.

Who You Are:

• You have worked in software development for 5+ years.
• You have gained profound experience with building web applications in Go for at least 3 years.
• You know how to profile a Go application and identify bottlenecks, having used this in your work to optimize code.
• You have worked on a large Go application with considerable traffic (>100e6 requests per day).
• You are open to relocating to Hamburg, Germany.
• Plus: Experience with infrastructure as code (Terraform), Docker, and serverless infrastructure.
• Plus: Experience with columnar databases.

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. 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 various 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.

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.