Senior Frontend Engineer

O projekcie: 📍 Location: Kraków, Poland (hybrid - 2 days per week in the office)📄 B2B Contract: 180 - 200 PLN / hour We are looking for a Senior Frontend Engineer to join an international project delivered for a large organization within the financial services sector. The team is responsible for developing and maintaining a global payments platform that enables fast and secure fund transfers across multiple channels, including supplier payments, salaries, and tax transactions. This role focuses on building modern user interfaces and front-end services that support payment processing systems (e.g. SEPA, SWIFT) as well as internal tools used across the EMEA region. You will work in an Agile, DevOps-driven environment, contributing to scalable and high-performance solutions. Key Responsibilities: - Develop and maintain modern front-end applications using React, TypeScript, and Java - Build UI services and micro frontends supporting payment processing systems - Collaborate with backend engineers to integrate APIs and microservices - Improve system usability through intuitive interfaces and user-focused design - Contribute to reducing operational complexity by building interactive tools and dashboards - Support automation initiatives, including test automation and CI/CD improvements - Enhance system efficiency and Straight-Through-Processing (STP) capabilities - Maintain and modernize legacy UI components (e.g. JSP-based solutions) - Work closely with stakeholders and distributed teams across different regions What We Offer: - Long-term cooperation on an enterprise-scale international project - Opportunity to work on high-impact global payment systems - Real influence on user experience and internal platform development - Private medical care (LuxMed) & Multisport card - Collaboration with experienced, international engineering teams Wymagania: - Strong hands-on experience with React 18, TypeScript 5, Bootstrap 5 - Solid understanding of RESTful APIs and microservices architecture - Experience working with SQL and databases - Java8+ essential, Java17+ preferable - Familiarity with legacy frontend technologies (e.g. JSP) - Experience working in Agile / DevOps environments - Strong analytical and problem-solving skills - English proficiency at B2+ level Nice to Have: - Experience in payments / financial systems