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August 14, 2026
Senior Full-stack Developer (React/Java)
Senior • Remote
13,000 - 24,000 PLN
Krakow, MA, Poland
Apply now
Your responsibilities
- Design, develop, and maintain scalable full stack applications using Java and React.
- Build and maintain backend services with Java, Spring Framework, Spring Boot, SQL, and AWS.
- Develop modern, reusable, and responsive user interfaces using React, TypeScript, and JavaScript.
- Design and implement scalable frontend architecture and reusable UI components.
- Collaborate closely with Product Owners, QA Engineers, and other development teams.
- Integrate frontend applications with REST APIs and backend microservices.
- Contribute to architectural decisions and technical discussions.
- Ensure application performance, scalability, security, and maintainability.
- Participate in code reviews, sprint planning, and Agile ceremonies.
- Support deployment automation, production operations, and troubleshooting.
- Mentor less experienced developers and promote engineering best practices.
Our requirements
- Minimum 4–5 years of professional software development experience.
- Commercial experience with Java, Spring Framework, and Spring Boot.
- Commercial experience with React.js and TypeScript.
- Solid understanding of JavaScript (ES6+).
- Experience working with AWS in production environments.
- Understanding of microservices architecture.
- Hands-on experience with SQL and relational databases.
- Experience integrating and consuming REST APIs.
- Very good knowledge of HTML5, CSS3 / SCSS, responsive design, and cross-browser compatibility.
- Experience with frontend testing using Jest and React Testing Library.
- Familiarity with modern frontend tooling and build processes.
- Ability to work independently, take ownership of delivered solutions, and contribute to system design.
- Excellent communication skills and experience working in Agile environments.
Nice to have
- Experience with Kafka or other event-driven architectures.
- Knowledge of Hadoop or Apache Spark.
- Experience with Next.js.
- Experience with Redux, Zustand, or similar state management solutions.
- Previous experience in Healthcare or Life Sciences projects.
What we offer
- Long-term cooperation on an international project.
- Flexible working hours.
- Opportunity to influence architecture and technical decisions.
- Modern technology stack.
- Supportive, collaborative engineering culture.
- Learning and development opportunities.
- Modern equipment and comfortable working environment.
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