Senior Backend Engineer at exmox
Berlin, Berlin, Germany -
Full Time


Start Date

Immediate

Expiry Date

07 Dec, 26

Salary

0.0

Posted On

08 Sep, 26

Experience

0 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Yes

Skills

Industry

Information Technology & Services

Description

What You’ll Own


  • System architecture & backend engineering You architect and build high-scale backend systems that power real-time decision-making, ad delivery, and performance tracking. You ensure systems are reliable, maintainable, and scalable under high traffic, applying best practices in distributed systems, queues, and event-driven architectures.
  • API design & integration You design efficient APIs and services that serve internal teams and external partners with low latency and high reliability, including REST and GraphQL endpoints. You integrate with third-party platforms, MMPs, and analytics tools to maximize campaign effectiveness.
  • Performance, scaling & observability You ensure high performance under load using profiling, caching strategies, and horizontal scaling. You contribute to containerized deployments and observability with Docker, Kubernetes, and modern monitoring stacks to maintain system reliability and visibility.
  • Mentorship & technical leadership You mentor and guide engineers through complex technical challenges, architecture reviews, and clean, scalable design. You foster a culture of technical excellence, collaboration, and outcome-driven engineering.
  • Cross-functional impact You collaborate with product and data teams to deliver features that directly influence campaign effectiveness and advertiser ROI. Your work drives measurable business outcomes and sets the bar for system performance and reliability.

What You Bring


  • Proven backend expertise 5+ years of backend engineering experience, with at least 2+ in high-volume, data-rich environments. Strong Python expertise, with production experience in FastAPI, Flask, or similar frameworks.
  • API & distributed systems knowledge Deep understanding of API design and backend system integration, including REST and GraphQL. Experience with distributed systems, queues (Kafka, RabbitMQ), and event-driven architectures.
  • Performance & scaling focus Strong performance tuning and scaling skills, particularly for latency-sensitive, high-throughput systems. You think in systems and optimize holistically for efficiency and reliability.
  • Cloud & container experience Experience with Docker, Kubernetes, and cloud infrastructure, ensuring smooth deployment, orchestration, and observability.
  • Analytical & business-aware mindset You solve problems holistically, understand system-wide impacts, and make decisions that balance technical excellence with business outcomes.
  • Communication & collaboration Strong communicator, comfortable explaining complex technical concepts to cross-functional teams, product managers, and business stakeholders.
  • AdTech familiarity Experience with ad serving logic, tracking systems, fraud prevention, or real-time bidding is a significant advantage.


Responsibilities
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