Backend Developer - Advertising Dashboard

About The Company

adjoe GmbH is at the forefront of transforming the mobile advertising landscape. Leveraging cutting-edge AI technology, first-party data, and a team of world-class engineers, adjoe has perfected the offerwall experience to help app publishers monetize and scale their applications effectively. Our innovative solutions, including Playtime and Arcade, have rapidly become the fastest-growing rewarded advertising channels globally, driving increased engagement, user retention, and revenue for our partners. Additionally, adjoe is making significant strides into programmatic advertising with its intelligent bidding system, adjoe Ads, creating a comprehensive ecosystem that connects app developers with over 600 million users worldwide for scalable growth. With a robust backing of a $100 million investment from Bertelsmann and operational offices in Hamburg, Boston, Singapore, and Tokyo, adjoe is shaping the future of app monetization and advertising experiences. We are committed to redefining industry standards and inviting talented professionals to join us in this exciting journey.

About The Role

We are seeking a highly skilled and motivated Backend Developer to join our Advertising Dashboard Team, part of the Advertising Solutions department. This team is responsible for developing and maintaining in-house technology that enables mobile publishers to acquire the right users by managing and analyzing ads for over 200 million daily users. The ideal candidate will play a pivotal role in designing, developing, and optimizing backend systems that support our data-driven advertising platform. Your work will directly impact how advertisers and account managers create, launch, analyze, and optimize campaigns through modern interfaces and dashboards built with advanced databases such as Druid. This is an excellent opportunity for an experienced developer to work in a dynamic, international environment, contributing to scalable, high-performance microservices architecture in a fast-growing company.

Qualifications

To be successful in this role, you should possess over 5 years of experience in software development, with a strong focus on building web applications in Go for at least 3 years. You should have a proven track record of working on large-scale applications handling high traffic volumes (>100 million requests per day). Expertise in profiling Go applications to identify and resolve bottlenecks is essential, along with experience optimizing query performance in databases. Familiarity with infrastructure as code tools like Terraform, containerization with Docker, and serverless infrastructure is a plus. Additionally, experience working with columnar databases such as Druid and knowledge of cloud-based data streaming platforms like Kafka and Kinesis will be advantageous. Candidates must be open to relocating to Hamburg, Germany, and demonstrate excellent communication skills in English. A proactive attitude, collaborative mindset, and a passion for innovative technology are highly valued.

Responsibilities

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• Contribute to the development and maintenance of our backend services written in Go, ensuring robust microservice architecture used to communicate with our frontend applications built with TypeScript React.
• Utilize event-driven systems such as Kafka and SQS/SNS to facilitate reliable asynchronous communication between microservices.
• Collaborate with a team of developers, sharing knowledge, conducting peer code reviews, and maintaining high coding standards.
• Work extensively with modern columnar databases like Druid, as well as MySQL, to optimize data queries and ensure minimal response times.
• Support external partners by providing raw or aggregated data tailored to their business needs, promoting data transparency through well-documented open APIs.
• Manage the ingestion of billions of daily API events, aggregating data streams within Kafka and Kinesis, with the goal of enabling rapid querying from our data lake.

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• Participate in an international, English-speaking team dedicated to scaling our adtech platform to support hundreds of millions of active users monthly.
  
  

Benefits

• Invest in Your Future: Receive continuous feedback and participate in our development programs designed to support your professional growth, skill enhancement, and career advancement.
• Easy Arrival to adjoe: We assist with visa processes, relocation bonuses, and settling into Hamburg. Our comprehensive onboarding ensures a smooth transition into your new role and environment.

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• Live Your Best Life, at Work and Beyond: Enjoy a flexible hybrid work setup with three core office days and adaptable working hours. Benefit from 30 vacation days, three weeks of remote work annually, and free access to our in-house gym with various fitness classes. Mental health support is available through our Employee Assistance Program (EAP).
• Thrive Where You Work: Experience the inspiring view of Alster Lake from our centrally located office, equipped with top-tier technology, open collaborative spaces, and a wide selection of snacks and drinks.
• Join the Community! Engage in regular team and company events, including hackathons and social gatherings, fostering a sense of belonging and team spirit.
  
  

Equal Opportunity

adjoe GmbH is an equal opportunity employer committed to fostering a diverse and inclusive workplace. We welcome applications from individuals of all backgrounds, experiences, and perspectives. Our hiring decisions are based on merit, skills, and potential, and we strive to create an environment where everyone can thrive and contribute to our shared success.