Tech Lead (f/m/d)

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: Advertising Dashboard Team (part of the Advertising Solutions department)

The Advertising Solutions department at adjoe develops 100% in-house technology that helps mobile publishers acquire the right users by managing and analyzing ads through our advertising dashboard for over 200 million daily users. They build modern interfaces and dashboards using advanced databases like Druid to provide our advertisers and account managers with valuable, data-driven insights.

As part of the Advertising Solutions team, the Advertising Dashboard team is responsible for development of User & API interfaces (DSP / campaign management) that we provide for our internal business team and external advertisers to create, launch, analyze and optimize advertising campaigns.

What You Will Do:

• Contribute to the development of our demand solutions backend written all in Go and maintain our microservice architecture used to communicate with our dashboard (based on TypeScript React). To do this, you’ll use event buses like Kafka, SQS/SNS, and Kinesis in order to have reliable asynchronous microservice communication.
• Work in a community of developers with whom you’ll share knowledge and contribute to peer code reviews.
• Work with modern databases such as DynamoDB to deliver few-millisecond response times for our APIs.
• Build, maintain and improve Druid queries to support fast and insightful analysis in our dashboard.
• Be responsible for collecting the billions of daily API events and aggregating them in our Kafka and Kinesis streams with the goal of querying them from the data lake in a matter of seconds.
• Design & maintain APIs used by our external partners for reporting and publishing configuration changes for their advertising campaigns like, for example, uploading new images and videos for ads or getting spend data.
• Be part of an international English-speaking team dedicated to scaling our adtech platform beyond our hundreds of millions of monthly active users.

Who You Are:

• You bring 7+ years of experience in software engineering, including several years in lead roles (e.g., Software Architect, Tech Lead, or comparable).
• Proven track record of operating at a senior level, making architectural decisions, and leading cross-functional engineering teams.
• You have outstanding experience with Go applied in a professional backend environment
• You are an expert in different technologies, including frontend specific (React/Typescript)
• You have extensive experience with Columnar Databases like Druid or Clickhouse and streaming systems like Kafka.
• You have experience with processing large amounts of data and visualising the data.
• You thoroughly understand cloud infrastructures such as AWS, Azure, or Google Cloud
• You feel comfortable managing people and have previously worked in a leadership role in a fast-changing environment, including performance management and development.
• You can connect business and tech and help business and product people to implement their ideas.
• You are ready for multi-tasking and do stakeholder and expectations management properly.

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.