Fliff unpacks sports gaming into social, free-to-play games for all types of sports fans. We've built a social sports gaming experience that allows users to compete for leaderboard positioning, to achieve badges and build their status within the game.
We are pioneering play-for-fun sports gaming, with our flagship social sportsbook experience that includes sweepstakes promotions and loyalty rewards. We provide sports fans with fun, engaging, and free-to-play alternatives to real money gaming.
We are looking for a Senior Python Engineer to own, design, build, and maintain high-performance distributed backend systems serving millions of users. You will be accountable for end-to-end delivery of scalable, reliable, and low-latency solutions using Python, Django, and Kafka.
This role requiresfull working-hour alignment with Central European Time (CET ±2 hours)to enable daily, real-time collaboration with our Sofia-based team.We are only considering candidates located within this time zone range. Applicants outside CET ±2 hours will not be considered.
What You’ll Do




- Take full ownership of backend services from design through deployment, maintenance, and continuous improvement
- Design, develop, and maintain scalable, high-performance distributed backend services using Python and Django
- Architect distributed systems to support millions of users with low latency and high availability
- Collaborate with product, frontend, and DevOps teams to ship reliable features on aggressive timelines
- Lead and mentor junior engineers through code reviews, architectural discussions, and knowledge sharing
- Own critical backend infrastructure components: APIs, data pipelines, message brokers (Kafka), caching
- Optimize systems for throughput, latency, fault tolerance, and resilience under heavy load
- Implement robust testing strategies: unit, integration, and performance tests
- Drive continuous improvement of development processes and system observability (monitoring, logging)
- Par

📌 Senior Python Django Engineer (Barcelona)
🏢 Fliff
📍 Barcelona