Senior Python Developer

Описание

Responsibilities

• Development and enhancement of backend services on Python / Django
• Design and implementation of new functional modules
• Support, optimization, and refactoring of the existing codebase
• Development and support of REST API
• Integration with internal and external services, including components in Go and other languages
• Work with databases, optimization of SQL queries and performance
• Development of background and asynchronous processes
• Participation in architectural decisions and the development of backend architecture
• Decomposition and estimation of technically complex tasks
• Conducting Code Review and maintaining code quality
• Analysis and elimination of production problems
• Parallel work on several development areas

Requirements

• Experience in Crypto / Blockchain - mandatory
• Experience in developing financial and transactional systems
• Understanding of working with balances, payments, and financial transactions
• Experience with microservice architecture
• Knowledge of NATS and other message brokers
• Experience in developing WebSocket and real-time services
• Knowledge of FastAPI / asyncio
• Experience working with large volumes of data and intensive event streams
• Deep optimization of PostgreSQL for high loads
• Experience with ClickHouse and analytical DBMS
• Knowledge of Kubernetes and CI/CD
• Understanding of fault tolerance and horizontal scaling
• Experience with Prometheus, Grafana, and observability tools
• Knowledge of secure backend development principles
• Experience participating in large multi-team projects
• Commercial backend development experience of 5+ years, a significant portion of which is related to Python
• Deep knowledge of Python 3
• Experience in developing and supporting large production projects on Django
• Confident use of Django ORM and Django REST Framework
• Experience in designing and developing REST API
• Understanding of backend system architecture and microservice interaction
• Experience in developing high-load production systems
• Experience integrating services, including those written in different programming languages
• Confident knowledge of PostgreSQL: SQL, indexes, transactions, query optimization
• Experience with Redis
• Understanding of asynchronous programming in Python
• Experience in background task processing and working with message brokers
• Understanding of transactionality, concurrent access, and data integrity
• Experience with Unit / Integration Testing
• Knowledge of Git, Docker, Linux
• Ability to independently design solutions, decompose tasks, and bring them to production
• Ability to quickly understand a large existing codebase and work with multiple tasks in parallel

We offer

• A large project in the field of cryptocurrencies and digital assets
• Technically complex platform with a large existing codebase
• Employment according to the Labor Code of the Republic of Belarus
• Hybrid work format