Python Backend Developer – Microservices

About the role

Betby, a fast-growing iGaming company behind a premium sportsbook, is hiring a Python developer for its Risk-Management Product Group. You will build and maintain high-load backend services in a microservice architecture, working on new modules, performance optimization and high-throughput processing. The team is small (6-8 engineers) and operates with high autonomy.

Key responsibilities

• Develop and maintain high-load backend services using Python (asyncio)
• Design, support and optimize microservice architecture components
• Take part in architectural discussions and technical decisions
• Integrate with Kafka, RabbitMQ and internal RPC services
• Refactor existing services for scalability, reliability and performance
• Write functional and integration tests
• Collaborate with developers, QA, analysts and product teams, and contribute to code reviews

Required profile

• 5+ years of professional Python experience
• Strong hands-on experience with asyncio and asynchronous programming (3+ years preferred)
• Experience with microservice architecture (REST API, RPC)
• Good understanding of algorithms and data structures
• Practical use of SOLID, DRY, KISS and YAGNI principles
• Experience designing internal libraries, SDKs or shared components

Required skills

• Python 3.11+, Pydantic v2, asyncio
• Kafka (consumer groups, delivery guarantees, partitioning) and RabbitMQ (RPC, pub/sub, DLX, retries)
• MongoDB (indexes, configurations, transactions)
• Stream processing and RPC server design
• Nice to have: Prometheus, Grafana, ELK, Docker, Kubernetes, GraphQL (Ariadne), ClickHouse, CI/CD

What we offer

• Health insurance and paid sick leave up to 10 days without a medical certificate
• 20 days of paid vacation plus extra leave for life events
• Learning support, language learning support and modern hardware
• International team, corporate events and welfare support