Java & React.js Developer - Krakow - Poland 2/3 days onsite

We are looking for an experienced Java & React.js Developer to join our development team in Kraków. In this role, you will work on building and maintaining scalable web applications, contributing to both backend services and modern frontend interfaces. This position follows a hybrid working model with two/three days per week onsite in Kraków. Key Responsibilities • Develop and maintain backend services using Java • Build responsive and modern user interfaces using React.js • Design and implement RESTful APIs • Collaborate with product managers, designers, and engineers to deliver new features • Write clean, maintainable, and efficient code • Participate in code reviews and contribute to development best practices • Troubleshoot and resolve technical issues • Support integration and deployment through CI/CD pipelines Required Skills and Experience • Strong experience with Java • Solid experience with React.js • Experience building and consuming REST APIs • Strong knowledge of JavaScript, HTML, and CSS • Experience with Git and modern development workflows • Familiarity with Agile development environments • Good communication skills in English Nice to Have • Experience with Spring Boot • Experience with TypeScript • Knowledge of SQL databases • Familiarity with Docker or cloud platforms Work Model • Hybrid: 2 days onsite in Kraków, remaining days remote.