> Markdown version of [/jobs/ext/1932860-senior-front-end-engineer](https://www.wearedevelopers.com/jobs/ext/1932860-senior-front-end-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Front-End Engineer - **Company:** Impress - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Databases, Continuous Integration, Payment Systems, PostgreSQL, Performance Tuning, Cloud Services, Next.js, ReactJS, Backend, Containerization, Material UI, Front End Software Development, NestJS, Restful APIs, Crud, Microservices - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/senior-front-end-engineer-en-madrid-ID-365479684 ## About the Role Raise the Bar on Design: Contribute to design system consistency and quality across all products. Requirements 5+ years of frontend development experience. Expert?level React - you know the internals, not just the API. Expert?level Type Script - you write it without thinking twice. Experience with Next.js is highly desirable. Hands?on Nest JS experience is a strong plus - being able to scaffold a CRUD API or a BFF layer independently will make you highly effective here. Solid understanding of modern frontend tooling, state management patterns, and performance optimization. Experience working in a product team alongside designers and backend engineers. Nice to Have E?commerce experience - checkouts, payment flows, order management. Basic backend knowledge (REST APIs, databases). Familiarity with infrastructure concepts (CI/CD, containerization, cloud services). Tech Stack Frontend: React, Type Script, Next.js, Material UI, Chakra UI + Panda, Tan Stack. Backend (for context): Nest JS, Medusa JS (self?hosted). Infrastructure: Postgre SQL, microservices. At Impress we cultivate a culture of inclusion and diversity. ## Description Join Impress - Europe's leading health?tech innovator!We believe everyone deserves a smile they'll love.As the largest ortho clinic chain in Europe, we combine cutting?edge tech with expert care, revolutionizing invisible orthodontics since ****.With 150+ clinics across 10 countries and rapid growth, we're improving lives worldwide.We are looking for a Senior Frontend Developer to join our onsite team in Barcelona.Why We're Cool Work with an international and multicultural team Competitive salary Teeth aligner and whitening benefits Collaborative work environment and positive culture Opportunities to grow within a fast?paced, innovative company and real start?up experience with big challenges Fresh fruits and healthy snacks at the office What You'll Do Own the Storefront: Build and maintain multiple React?based frontends covering treatment sales, custom checkout flows, and post?treatment offers.Shape Internal Tools: Develop CRM and management tools using React, Material UI, and Tan Stack Query that power day?to?day operations.Bridge Frontend & Backend: Collaborate closely with backend engineers to integrate payment providers and ensure seamless end?to?end flows.Raise the Bar on Design: Contribute to design system consistency and quality across all products.Requirements 5+ years of frontend development experience.Expert?level React - you know the internals, not just the API.Expert?level Type Script - you write it without thinking twice.Experience with Next.js is highly desirable.Hands?on Nest JS experience is a strong plus - being able to scaffold a CRUD API or a BFF layer independently will make you highly effective here.Solid understanding of modern frontend tooling, state management patterns, and performance optimization.Experience working in a product team alongside designers and backend engineers.Nice to Have E?commerce experience - checkouts, payment flows, order management.Basic backend knowledge (REST APIs, databases).Familiarity with infrastructure concepts (CI/CD, containerization, cloud services).Tech Stack Frontend: React, Type Script, Next.js, Material UI, Chakra UI + Panda, Tan Stack.Backend (for context): Nest JS, Medusa JS (self?hosted).Infrastructure: Postgre SQL, microservices.At Impress we cultivate a culture of inclusion and diversity.We celebrate our employees' individual strengths, views, and experiences and we encourage all candidates to apply, without regard to race, color, religion, gender identity, sexual orientation, age, national origin, disability, or any other factor.#J-*****-Ljbffr ## Related Videos - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [Rest API Antipatterns](https://www.wearedevelopers.com/videos/100208-rest-api-antipatterns) - [Next, Nest, Nuxt… Nust?](https://www.wearedevelopers.com/videos/421-next-nest-nuxt-nust) - [Streaming AI Responses in Real-Time with SSE in Next.js & NestJS](https://www.wearedevelopers.com/videos/1630-streaming-ai-responses-in-real-time-with-sse-in-next-js-nestjs) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development)