Senior Backend Engineer (f/m/x)

exmox GmbH; Hamburg; Vor Ort; Vertraulich; Vollzeit

Zusammenfassung

A leading Ad-Tech company in Hamburg seeks a Senior Backend Engineer to design and scale systems for their platform. The role encompasses building high-scale backend systems, designing APIs for efficiency, and integrating with third-party platforms. Ideal candidates will have over 5 years of backend experience, particularly in data-rich environments, and strong Python skills, including frameworks like FastAPI and Flask. The position offers a hybrid work model and exceptional work-life balance with various benefits.

Leistungen

30 days of paid vacation

Public transportation tickets

Annual education budget of €1,500

Workation opportunities

Access to 7,000 gyms and spas

Monthly team lunches

Flexible working hours

Exclusive discounts for major brands

Diversity in team

Socializing area in the office

Qualifikationen

• 5+ years of backend engineering experience, with at least 2+ in a high-volume, data-rich environment.
• Strong Python expertise, with production experience in FastAPI, Flask, or similar frameworks.
• Deep understanding of API design and backend system integration.
• Experience with distributed systems, queues, and event-driven architectures.

Aufgaben

• Architect and build high-scale backend systems for ad delivery and performance tracking.
• Design efficient APIs and services with low-latency and high reliability.
• Work on data-intensive components like event processing and attribution tracking.
• Integrate with third-party platforms using RESTful APIs.

Kenntnisse

Backend engineering experience

Python expertise

API design

Distributed systems

Performance tuning

Docker

Kubernetes

Analytical mindset

Strong communication skills

Tools

FastAPI

Flask

Kafka

RabbitMQ

Jobbeschreibung

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!