Senior Backend Engineer Remote (fmx)

Your mission

As a Senior Backend Engineer youll be instrumental in designing and scaling the systems that power our Ad-Tech platform including high-throughput tracking pipelines. Youll 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 1500.
• Workation Opportunities: Combine work and vacation annually.
• Wellness: Access to over 7000 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 a fully remote position but requires working within a German or European time zone to ensure smooth collaboration with the team.