Fullstack Developer (React, Java) w Poland, Katowice

Responsibilities Develop and maintain applications using Java 21 and modern web technologies. Build user interfaces using React, TypeScript and Material UI. Implement new features and contribute to both frontend and backend development tasks. Write clean, maintainable, and well-documented code. Create and execute tests to ensure software quality and reliability. Take ownership of the product and be responsible for the solutions you build. Proactively contribute ideas and help create innovative solutions. Collaborate closely with developers, testers, and business stakeholders. Work in an agile environment using Agile practices. Participate in team planning, reviews, and retrospectives. Meet with your team in our Katowice office at least once a month to plan work, collaborate, and discuss progress. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications Successful completion of higher education as a qualified IT specialist or university degree in computer science. At least 2 years of experience working as a Frontend Developer or Fullstack Developer with React. Experience with object-oriented software development in Java. Knowledge of web development technologies, including HTML, CSS, and TypeScript. Basic understanding of the React framework, Material UI and concepts such as JSX/TSX, Function Components, Hooks, Custom Hooks, and State Management. Experience using AI-assisted development tools (e.g., GitHub Copilot, ChatGPT, Claude, Cursor, or similar) to improve productivity, code quality, and development efficiency. Good familiarity with Jira and Confluence. Experience with code testing and quality assurance practices. Good communication skills in English and Polish and the ability to work effectively within a team. Communication skills in German is a plus. Develop yourself and the digital future – at Reply! Reply specialises in designing and implementing solutions based on new communication channels and digital media. Structured as a network of highly specialised companies, Reply supports leading European industrial groups in sectors such as Telco & Media, Industry and Services, Banking and Insurance, and Public Administration, helping define and develop business models enabled by new paradigms such as AI, Cloud Computing, Digital Media, and the Internet of Things. Reply’s services include Consulting, System Integration, and Digital Services.