Senior Frontend Engineer – React 6 month contract – hybrid (Dublin, London, Barcelona, Warsaw or Berlin) I'm working with a well-established product-led SaaS company looking to bring in a senior frontend engineer to join a high-performing team working on a large-scale, user-facing platform.This is a hands-on role in a brownfield environment, focused on improving and extending existing React applications within a microfrontend architecture.Key requirements • Strong React experience, including maintaining and evolving existing applications • Experience with GraphQL and React Query • Solid understanding of microfrontend architectures • Comfortable working closely with backend engineers to define API contracts and support integration • Able to operate independently and contribute to day-to-day technical decisions Nice to have • Exposure to Go, or the ability to read and understand Go code • Experience with styled-components and design systems • Good awareness of frontend performance and optimisation techniques Environment • Product-led, engineering-driven culture • Modern frontend stack with a focus on scalability and maintainability • Collaborative team working closely across frontend and backend Contract details • 6 month initial contract with strong likelihood of extension • Hybrid working in Dublin, London, Barcelona, Warsaw or Berlin • Competitive day rate If this sounds relevant, send me a message and I'll share more detail.