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Full Description

A Java Back-end Developer focuses on building robust, secure, and highly-available server-side systems and APIs that power products, working closely with front-end engineers and architects to ensure performance benchmarks are consistently met. What We Expect From You: Design and implement microservices and distributed systems using Java and the Spring ecosystem, following established architectural patterns. Develop secure, high-performance RESTful APIs that are consumed reliably by both web and mobile client applications. Model, optimise, and manage relational and NoSQL databases to support scalable, data-intensive workloads. Implement authentication and authorisation mechanisms using OAuth2, JWT, and Spring Security best practices. Identify and resolve performance bottlenecks through profiling, load testing, and targeted refactoring of critical code paths. Integrate third-party services, payment gateways, and external APIs in a maintainable and testable way. Write comprehensive unit and integration tests to maintain high coverage and prevent regressions across services. 3+ years of professional Java back-end development with deep knowledge of the JVM and core Java libraries. Strong hands-on experience with Spring Boot, Spring Cloud, and ORM frameworks such as Hibernate or JPA. Solid understanding of microservices architecture, including service discovery, load balancing, and inter-service communication. Experience with relational databases (PostgreSQL, MySQL) and caching solutions like Redis. Practical knowledge of message brokers such as Kafka or RabbitMQ for building event-driven services. Comfortable with Docker, Kubernetes, and setting up or maintaining CI/CD pipelines in cloud environments. Proficiency in English and Russian.