Senior Python Engineer

Fliff Inc; Zone; Remote; EUR 107,000 - 161,000; Full time

Benefits offered by this job

Fully remote work environment

Global collaboration

Professional development opportunities

Supportive team culture

Job summary

Fliff Inc. is hiring a Senior Python Engineer to own and evolve high‑performance distributed backend systems. You’ll build with Python, Django, and Kafka, ensuring low latency and high availability for millions of users.

You will align with CET±2 hours for Sofia-based collaboration; fully remote work is offered, with a focus on scalable, observable backend services and on-call rotations as needed.

Qualifications

• 5+ years of professional Python backend development with ownership.
• Solid Django experience with asyncio and asynchronous patterns.
• Production experience with Kafka and distributed systems.
• Experience deploying containerized apps with Docker; Kubernetes is a plus.
• Proficient in PostgreSQL; familiarity with NoSQL is a plus.
• Experience with CI/CD pipelines and test automation.
• Knowledge of monitoring/logging tools (Prometheus, Grafana).
• Agile team experience and strong problem-solving skills.
• Willingness to participate in on-call rotations.

Responsibilities

• Take ownership of backend services from design to deployment and maintenance.
• Design and maintain scalable distributed backend using Python and Django.
• Architect systems to support millions of users with low latency.
• Collaborate with product, frontend, and DevOps to ship features on tight timelines.
• Lead and mentor junior engineers through code reviews and architecture discussions.
• Own APIs, data pipelines, and messaging (Kafka) with caching strategies.
• Optimize for throughput, latency, fault tolerance, and resilience.
• Implement unit, integration, and performance tests.
• Improve development processes and system observability (monitoring, logging).
• Participate in on-call rotations and production issue support.

Skills

Python backend

Django

Asyncio

Distributed systems

Code reviews

On-call readiness

Tools

Kafka

Docker

Kubernetes

PostgreSQL

Prometheus

Grafana

AWS

Job description

Fliff is the arena for high-upside play. We are dismantling the paywalls of legacy sportsbooks and reimagining the economics of social games to pioneer the next generation of rewards-driven entertainment spanning sports, casino, predictions, collectibles, and beyond.

Powered by a frictionless freemium architecture, Fliff democratizes access and gives millions of players nationwide a real stake, real thrill, and real upside. By combining authentic competitive drive with instant rewards and interactive games, we are turning passive sports fans and casual gamers into active, empowered participants - unlocking the player in everyone.

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 requires full 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)
• Participate in on-call rotations and support production issues as needed

What We're Looking For:

• 5+ years of professional Python backend development experience with a proven track record of ownership and successful delivery
• Solid Django experience (not necessarily expert level), with asynchronous programming skills (asyncio)
• Production experience with Apache Kafka
• Strong experience with distributed systems (microservices or similar architecture)
• Experience deploying and managing containerized applications (Docker); Kubernetes experience is a plus
• Familiarity with any cloud provider (AWS preferred)
• Proficient with SQL databases, especially PostgreSQL; NoSQL is a plus
• Experience with CI/CD pipelines and test automation
• Knowledge of monitoring and logging tools (Prometheus, Grafana, or equivalent
• Strong problem-solving skills and comfort doing code reviews
• Prior experience working with systems supporting 1M+ users is a strong plus
• Comfortable working in Agile teams
• Strong sense of responsibility and commitment to shipping high-quality software
• Willingness to participate in on-call rotations

Nice to Have

• Exposure to event sourcing or CQRS patterns
• Familiarity with frontend technologies (React)
• Knowledge of big data tools (Flink, NiFi)
• Exposure to infrastructure as code tools like Terraform
• Practical knowledge of containerization and orchestration tools like Docker and Kubernetes
• Experience in sports/betting industries

Benefits:

• Fully remote work environment
• Professional development opportunities in a dynamic, global setting
• A supportive, collaborative, and knowledge-driven workplace
• An engaging and challenging role with the freedom to innovate and develop effective solutions

We are a multinational company with our headquarters based in Philadelphia, and offices in New York, Austin, and Sofia, Bulgaria. Wherever we are in the world, we pride ourselves on being a close-knit, focused team that is welcoming and friendly, and the work that we do is always interesting and rewarding. Wherever we are in the world, we pride ourselves on being a close-knit, focused team that is:

Welcoming and Friendly

We want to reflect the diversity of the cities we serve. By creating an inclusive culture where everyone can thrive, we’ll make Fliff better for employees and customers alike.

Lively and Creative

We respect and value each other’s ideas, experience and expertise. There is no such thing as a bad idea; only ideas that are executed and ideas that are discarded after consideration.

Stimulating and Rewarding

We know bright minds love a challenge, and we understand your desire to see your hard work pay off. We’ll make sure your daily tasks align with your career ambitions as we grow together.

Equal Employment Opportunity Statement

Fliff is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.