Senior Front End Developer

Senior Front End Developer – Stockholm Start: January 5, 2026 End: January 31, 2027 Scope: 100% (on-site in Stockholm) Application deadline: November 6, 2025 About the Assignment We are seeking a Senior Front End Developer for our client in Stockholm, who is undergoing a comprehensive modernization of their systems for managing external fund orders. The client is switching suppliers for executing orders in external funds while simultaneously building a completely new, modern IT solution to support processes in Sweden, Norway, and Finland. The current platform is based on outdated technologies, including legacy Java versions, SOAP, and a legacy interface, and will now be replaced with a modern architecture based on Java 21, Spring Boot, REST APIs, and Kafka. You will be a key player in the development of the new frontend layer, built in React, contributing to a solution characterized by performance, user-friendliness, and long-term sustainability. Your Responsibilities • Develop and optimize new interfaces in React that provide a top-notch user experience. • Collaborate with the backend team to integrate REST APIs. • Contribute to architectural decisions, component structure, and best practices within frontend development. • Participate in the team's daily agile work and contribute to test automation and quality assurance. Your Profile We are looking for someone with solid experience in modern frontend technologies and a strong focus on code quality and user experience. You thrive in cross-functional teams and are happy to take responsibility for both technology and delivery. You have: • Several years of experience with JavaScript and React. • Experience with modern frameworks and tools for testing, building, and versioning. • A good understanding of the interaction between frontend and backend (REST APIs). • A proactive and solution-oriented approach. Experience in larger system environments within finance, fintech, or similar complex domains is a merit. Application Please attach: • An updated CV • Information about availability/start date • A brief statement on why you are the right person for the assignment – preferably with examples from previous assignments, roles, or projects. Selection occurs continuously We recommend that you apply as soon as possible, as the assignment may be removed prior to the application deadline. Location: Stockholm Scope: 40 hours/week