Senior Frontend Engineer

About this role

About Avaron AB

At Avaron, you get the security of permanent employment combined with the variety of working at different customers. We place specialists across everything from tech, IT and industry to project management and business support – and whatever the assignment, you have a consultant manager who is there for you and your development. About the Role You will take a key role in building modern frontend solutions for a product environment with high demands on scalability, accessibility, performance, and security. The role spans the full journey from design decisions to production delivery, with real influence over architecture, engineering standards, and how teams build reliable user experiences at scale. You will work closely with product, design, backend, SRE, and security to turn requirements into robust solutions that perform well in production. This is an exciting opportunity for you who enjoy combining hands-on development with technical leadership in a complex environment. Job DescriptionYou will own end-to-end delivery of advanced frontend features using TypeScript and React. You will design scalable and maintainable frontend architectures for large enterprise applications, including modularization, code splitting, and performance improvements. You will drive state management strategy using tools such as Redux, Zustand, or React Query to create predictable data flows. You will build integrations toward APIs and BFF layers, and contribute to Node.js services when needed. You will turn product and design requirements into accessible, responsive, and high-quality UI with semantic HTML and WCAG-compliant implementation. You will optimize rendering, bundle size, network usage, and caching to improve application performance. You will help define coding standards, patterns, and best practices across the codebase. You will review code, mentor other engineers, and help raise the overall engineering quality. You will troubleshoot issues proactively and resolv