Senior Java Backend Developer

EPAM is seeking a skilled Senior Java Backend Developer who is passionate about building scalable, high-performance backend services and enjoys working on products used daily by thousands of professionals. You will join a collaborative, agile team developing and enhancing a flagship mobile platform and supporting backend services for a leading global property data and analytics company operating in the real estate technology (PropTech) domain. The client delivers data-driven solutions that power the real estate industry across North America, providing critical tools and insights to agents, brokers, and MLS organisations.

Responsibilities

• Design, develop, and maintain scalable backend services using Java and Spring Boot
• Build and enhance RESTful APIs supporting mobile and web applications
• Develop secure, reliable, and high-performance microservices
• Design and optimize database models and data access layers
• Integrate with third-party platforms and external APIs
• Collaborate with mobile developers, frontend engineers, product managers, QA engineers, and architects to deliver high-quality solutions
• Participate in system design, code reviews, technical discussions, and architectural decisions
• Troubleshoot production issues and improve application performance, scalability, and reliability
• Write clean, maintainable, and well-tested code following engineering best practices
• Contribute to continuous improvement initiatives, including CI/CD, automation, and AI-assisted software development practices

Requirements

• 5+ years of professional software development experience
• Strong experience with Java and Spring Boot
• Solid understanding of REST API design and microservices architecture
• Experience with relational databases such as PostgreSQL, MySQL, or SQL Server
• Experience with JPA/Hibernate or similar persistence frameworks
• Knowledge of modern software engineering principles, design patterns, and clean code practices
• Experience with Git and collaborative development workflows
• Familiarity with unit and integration testing frameworks
• Strong analytical, problem-solving, and communication skills
• Ability to work effectively in an Agile/Scrum environment
• Availability to work shifted hours (3:00 PM - 11:00 PM Polish time) to align with the North American-based team
• English proficiency at B2 level or higher

Nice to have

• Experience with cloud platforms (AWS or GCP)
• Experience with Docker and Kubernetes
• Knowledge of messaging technologies such as Kafka or RabbitMQ
• Experience with OAuth2, SSO, JWT, or other authentication mechanisms
• Familiarity with AI-assisted development tools such as GitHub Copilot or Gemini
• Experience working with high-traffic, customer-facing SaaS or mobile backend platforms
• Experience integrating with third-party APIs and enterprise systems
• Background or interest in the real estate / PropTech domain