Lead Full Stack Developer - Java + React/Angular (k/m)
Summary
Lead full stack developer building scalable enterprise applications with a Java/Spring Boot backend and an Angular or React frontend — REST APIs, Kafka-based event-driven services, and testing across the SDLC. Hybrid role: 3 days/week from an EPAM office in Kraków or Wrocław; requires 8+ years' experience and B2+ English.
Hybrid work model — combining remote work with 3 days per week from one of our EPAM offices located in Kraków or Wrocław.
Responsibilities
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Design, develop, and maintain scalable fullstack applications using Java-based backend technologies and modern frontend frameworks
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Build and integrate RESTful APIs and event-driven services to support complex business requirements
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Participate in the full software development lifecycle — from requirements analysis and technical design through implementation, testing, and deployment
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Collaborate with cross-functional teams including product owners, business analysts, UX designers, and QA engineers to deliver high-quality solutions
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Contribute to architectural decisions and advocate for best practices in code quality, security, and performance
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Participate in code reviews, providing constructive feedback to ensure maintainability and adherence to coding standards
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Develop and maintain unit and integration tests to ensure reliability and stability of delivered features
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Work with messaging systems and asynchronous communication patterns to support distributed architectures
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Continuously identify opportunities for technical improvement and contribute to the evolution of the technology stack
Requirements
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Minimum of 8 years of professional experience in Full Stack software development
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Strong hands-on experience with Spring Boot for building enterprise-grade backend applications
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Solid knowledge of Spring Security for implementing authentication, authorization, and secure application design
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Proven experience in designing and developing REST APIs following industry best practices
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Proficiency in working with SQL databases, including writing complex queries, performance tuning, and data modeling
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Experience writing reliable and maintainable tests using JUnit or similar testing frameworks
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Hands-on experience with Apache Kafka for event streaming, asynchronous messaging, and building event-driven architectures
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Strong proficiency in at least one modern frontend framework — Angular or React — including component-based architecture and state management
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Strong communication skills and the ability to work effectively in an international, Agile team environment
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Proficiency in English (B2+), both written and spoken