Fullstack Developer
📍 Location: Kraków, Poland (hybrid – 2 days per week in the office)
📄 Contract Type: B2B
🏦 Industry: Financial Services / Payments
About the Project
We are looking for an experienced Fullstack Developer (Java + React) to join an international payments platform operating in a large-scale enterprise environment. The system supports a wide range of financial transactions and payment operations across multiple regions worldwide.
As part of a cross-functional Agile team, you will be involved in both backend and frontend development, contributing to the design and delivery of modern, scalable solutions built on microservices and API-first architecture.
Key Responsibilities
- Design, develop, and maintain backend applications and microservices using Java.
- Build and enhance modern web applications using React.
- Develop and maintain RESTful APIs and microservice-based solutions.
- Participate in the modernization of existing systems and migration to modern architectures.
- Write clean, maintainable, and well-tested code following engineering best practices.
- Contribute to automated testing, CI/CD pipelines, and DevOps initiatives.
- Collaborate closely with architects, business analysts, product owners, and other development teams.
- Participate in code reviews and support continuous improvement of development standards.
- Troubleshoot, optimize, and enhance system performance, reliability, and scalability.
Requirements
- 5+ years of professional software development experience.
- Strong hands-on experience with Java 11+ (Java 17 or Java 21 preferred).
- Solid experience with Spring Framework and Spring Boot.
- Experience designing and developing REST APIs.
- Good understanding of microservices architecture.
- Commercial experience with React and JavaScript/TypeScript.
- Strong SQL skills and experience working with relational databases (Oracle is a plus).
- Experience with Git and modern software development practices.
- Hands-on experience with Kubernetes and containerized environments.
- Experience working in Agile teams.
- Understanding of CI/CD processes and collaboration within DevOps environments.
Nice to Have
- Experience in the financial services, banking, or payments industry.
- Experience with automated testing frameworks and test automation practices.
- Exposure to cloud platforms such as AWS, Azure, or GCP.
- Familiarity with integration patterns and high-availability systems.
What We Offer
- Opportunity to work on a long-term international project with significant scale and complexity.
- Exposure to modern technologies, microservices architecture, and cloud-native practices.
- Real impact on product development and technical solutions.
- Luxmed private healthcare package.
- Multisport card.
- Collaborative engineering culture focused on quality, automation, and continuous improvement.