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Senior Backend Engineer (f/m/x) Job Opening In Hamburg – Now Hiring exmox GmbH


Job description

Your mission


As a Senior Backend Engineer, you’ll be instrumental in designing and scaling the systems that power our Ad-Tech platform including high-throughput tracking pipelines.

You'll work alongside data scientists, product specialists, and frontend developers to drive measurable impact across millions of daily user interactions.



  • Architect and build high-scale backend systems to power real-time decision-making, ad delivery, and performance tracking.

  • Design efficient APIs and services that serve internal teams and external partners with low-latency and high reliability REST and GraphQL included.

  • Work on data-intensive components, including event processing, attribution tracking, and campaign performance monitoring.

  • Ensure high performance under load, applying profiling, caching strategies, and horizontal scaling to keep systems fast and reliable.

  • Integrate with third-party platforms, including MMPs, and analytics tools, using RESTful APIs

  • Contribute to containerized deployments and observability using Docker, Kubernetes, and modern monitoring stacks.

  • Mentor and guide engineers through complex technical challenges, architecture reviews, and clean, scalable design.

  • Collaborate cross-functionally with product and data teams to deliver features that directly influence campaign effectiveness and advertiser ROI.


Your profile



  • 5+ years of backend engineering experience, with at least 2+ in a high-volume, data-rich environment (Ad-Tech preferred).

  • Strong Python expertise, with production experience in FastAPI, Flask, or similar frameworks.

  • Deep understanding of API design and backend system integration.

    Familiarity with both REST and GraphQL.

  • Experience with distributed systems, queues (e.g., Kafka, RabbitMQ), and event-driven architectures.

  • Strong performance tuning and scaling skills, especially in latency-sensitive systems.

  • Experience with Docker and Kubernetes, and a solid grasp of cloud infrastructure and container orchestration.

  • Ad-Tech familiarity: Experience with ad serving logic, tracking systems, fraud prevention, or real-time bidding is a significant plus.

  • Analytical mindset: You think in systems, solve problems holistically, and love optimizing for scale and efficiency.

  • Strong communicator: Comfortable working across disciplines and articulating complex technical concepts in a business-aware context.


Why us?




  • Work-Life Balance: 30 days of paid vacation.

  • Commuter Benefits: Public transportation tickets provided.

  • Professional Development: Annual education budget of €1,500.

  • Workation Opportunities: Combine work and vacation annually.

  • Wellness: Access to over 7,000 gyms and spas in Germany through Wellpass.

  • Catering: Monthly team lunches, daily fruits, vegetables, and a variety of beverages.

  • Flexibility: Flexible working hours and hybrid work model.

  • Corporate Benefits: Exclusive discounts for major brands and platforms.

  • Diversity: Join an international team with diverse cultural backgrounds.

  • Fun and Games: Socializing area for relaxing activities during the workday.


Please note: this is not a remote only position, we offer you a flexible hybrid model here in Hamburg, Germany - working from home on Mondays & Fridays, coming to the office on Tuesday, Wednesday & Thursday!



Welcome! Bonjour! Selam! Olá! Hej! 🥳


we are exmox - a Hamburg based mobile marketing agency, connecting advertisers with their highest value users through our owned and operated apps.

We created an innovative business model that focuses on rewarding users for testing and engaging with the apps of our clients.

Our products are available in DACH, US, UK & Canada.


Right now round about 60 employees from all over the world are working here with us in Hamburg.

We are a divers & funny team, always looking for new talents to join us.

Looking forward to meeting you!

Required Skill Profession

Computer Occupations


  • Job Details

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Unlock Your Senior Backend Potential: Insight & Career Growth Guide


Real-time Senior Backend Jobs Trends (Graphical Representation)

Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph here. Uncover the dynamic job market trends for Senior Backend in Hamburg, Germany, highlighting market share and opportunities for professionals in Senior Backend roles.

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The Work Culture

An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at exmox GmbH adheres to the cultural norms as outlined by Expertini.

The fundamental ethical values are:

1. Independence

2. Loyalty

3. Impartiapty

4. Integrity

5. Accountabipty

6. Respect for human rights

7. Obeying Germany laws and regulations

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