Middle+/Senior Java Backend Developer

Neo Group

Riga, Riga, Latvia permanent

Posted: December 2, 2025

Required Skills

Job Description

As part of our continued growth, Neo Group is recruiting on behalf of one of our local partners, leveraging our network of 1,400 talented professionals across 10+ countries. Together, we are committed to delivering innovative, data-driven solutions that empower our clients and foster professional growth within a dynamic and collaborative workplace.

• Develop and maintain the backend of a high-load application
• Design and implement APIs, integrate with external and internal services
• Work with databases, write efficient SQL queries and migrations
• Optimize performance and scalability of solutions
• Test, debug, and support the code
• Collaborate with frontend developers, DevOps engineers, and other teams

Requirements:
• 5+ years of commercial experience in Java development
• Excellent understanding of web application fundamentals using Apache Tomcat
• Strong understanding of multithreading and concurrency in Java (ExecutorService, CompletableFuture, virtual threads, synchronization, thread safety)
• Strong knowledge of Spring/Spring Boot, including Spring MVC, Spring Security, Spring Data
• Experience building RESTful APIs
• Hands-on experience with Kafka in production/high-load environments
• Experience working with relational (PostgreSQL, MySQL) and non-relational databases (MongoDB, Redis)
• Proficient in Git and experience in team-based development
• Understanding of microservices architecture
• Solid skills in writing unit and integration tests using JUnit, Mockito, TestContainers, WireMock or similar tools; commitment to well-tested and reliable code

Additional Skills:

• Experience with RabbitMQ
• Experience with GraphQL API
• Experience with Reactive programming
• Experience with Spring WebFlux + Netty
• Experience with containerization and orchestration (Docker, Kubernetes)
• Knowledge of secure coding practices (OWASP Top 10 and others)

Soft Skills:

• Ability to clearly articulate technical solutions and justify choices
• Strong teamwork and communication skills
• Proactive, self-driven, and responsible for results

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