Back to SearchLead Full-Stack Software Engineer (Java + ReactJS)
Hybrid in Poland
Java& 7 others
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We are looking for a Lead Full-Stack Software Engineer with expertise in Java and ReactJS to help design and deliver modern web applications across a React frontend and Spring Boot backend. You will guide technical execution, build reusable components and APIs, and ensure quality from development through deployment.
Responsibilities
- Lead end-to-end development across ReactJS frontend and Java/Spring Boot backend
- Design and implement scalable APIs, including authentication and database connectivity
- Build reusable UI components and shared frontend patterns
- Architect responsive, mobile-first user experiences using modern web standards
- Implement backend persistence and business logic using Spring Data JPA
- Write unit tests using an appropriate unit test framework and ensure code quality
- Debug and troubleshoot issues across browsers, frontend, and backend
- Collaborate with the team to deliver features through design, development, and deployment
- Evaluate and adopt new technologies when needed to meet project goals
Requirements
- Bachelor's degree in Computer Science, Information Systems, or Engineering
- 5+ years of full-stack development experience in modern web technologies
- At least 1 year of relevant leadership experience
- Proficiency in HTML5, CSS3, and JavaScript
- Expertise in React, Redux, and Webpack
- Skills in TypeScript and Micro-Frontend architecture
- Background in Java, Spring Boot, and JPA
- Understanding of API design, authentication, and microservices
- Knowledge of responsive design and mobile-first development principles
- Familiarity with browser testing and debugging tools
- Capability to write reusable components and unit test cases
- Strong debugging and problem-solving skills, with the ability to work both independently and collaboratively
- Good work ethic, self-starter mindset, and results-oriented approach
- Excellent command of written and spoken English (B2+ level)
Nice to have
- Knowledge of software development lifecycle (SDLC) methodologies such as Agile and Waterfall