Lead Full Stack Developer - Java + React/Angular (k/m)

Hybrid work model — combining remote work with 3 days per week from one of our EPAM offices located in Kraków or Wrocław.

Responsibilities

• Design, develop, and maintain scalable fullstack applications using Java-based backend technologies and modern frontend frameworks

• Build and integrate RESTful APIs and event-driven services to support complex business requirements

• Participate in the full software development lifecycle — from requirements analysis and technical design through implementation, testing, and deployment

• Collaborate with cross-functional teams including product owners, business analysts, UX designers, and QA engineers to deliver high-quality solutions

• Contribute to architectural decisions and advocate for best practices in code quality, security, and performance

• Participate in code reviews, providing constructive feedback to ensure maintainability and adherence to coding standards

• Develop and maintain unit and integration tests to ensure reliability and stability of delivered features

• Work with messaging systems and asynchronous communication patterns to support distributed architectures

• Continuously identify opportunities for technical improvement and contribute to the evolution of the technology stack

Requirements

• Minimum of 8 years of professional experience in Full Stack software development

• Strong hands-on experience with Spring Boot for building enterprise-grade backend applications

• Solid knowledge of Spring Security for implementing authentication, authorization, and secure application design

• Proven experience in designing and developing REST APIs following industry best practices

• Proficiency in working with SQL databases, including writing complex queries, performance tuning, and data modeling

• Experience writing reliable and maintainable tests using JUnit or similar testing frameworks

• Hands-on experience with Apache Kafka for event streaming, asynchronous messaging, and building event-driven architectures

• Strong proficiency in at least one modern frontend framework — Angular or React — including component-based architecture and state management

• Strong communication skills and the ability to work effectively in an international, Agile team environment

• Proficiency in English (B2+), both written and spoken