> Markdown version of [/jobs/ext/3449297-senior-front-end-engineer-backoffice](https://www.wearedevelopers.com/jobs/ext/3449297-senior-front-end-engineer-backoffice). 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 - Backoffice - **Company:** Impress - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Databases, Continuous Integration, PostgreSQL, Node.Js, Performance Tuning, Cloud Services, TypeScript, WebSocket, RxJS, ReactJS, Electronic Medical Records, Backend, Containerization, Material UI, Front End Software Development, React Redux, NestJS, Restful APIs, Api Management, Microservices - **Published:** September 9, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=8d80bb66727600f7 ## About the Role * 5+ years of frontend development experience. * Expert-level React - you understand the internals, not just the API. * Expert-level TypeScript - you write it without thinking twice. * Strong experience with state management patterns - Redux and server-state tooling such as React Query. * Solid understanding of modern frontend tooling, build setups and performance optimization. * Experience working in a product team alongside designers, backend engineers and QA. * Comfortable using AI coding assistants in your daily workflow. Nice To Have: * Booking or scheduling systems - availability, calendars, resource allocation. * Med-tech or healthcare experience - clinical workflows, EMR, patient data, or regulated domains. * RxJS - parts of the system use reactive streams for real-time state. * WebSockets - real-time connections and keeping client state in sync. * Basic backend knowledge (REST APIs, databases). * Familiarity with infrastructure concepts (CI/CD, containerization, cloud services). Tech Stack: * Frontend: TypeScript, React, Redux, RxJS, React Query, Material UI. * Backend (for context): Node.js, TypeScript, NestJS. * Infrastructure: AWS, PostgreSQL, microservices. ## Description * Own the Clinic Experience: Build and maintain multiple React-based frontends covering clinic agendas, booking and scheduling flows, patient treatment management, and electronic medical records. * Solve Complex State Problems: Clinical processes have real constraints - availability, resources, treatment stages, market-specific rules. A lot of the difficulty here is modelling state correctly, not styling it. * Bridge Frontend & Backend: Collaborate closely with backend engineers on API contracts and end-to-end flows that cross several services. * Raise the Bar on Quality: Solution and architecture reviews before implementation starts, unit and e2e coverage on critical paths, monitoring and error tracking after release. * Use AI as Part of Your Workflow: AI assistants are part of our everyday workflow - in implementation, review and testing. You will use them daily and help improve the workflows around them. ## Related Videos - [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) - [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) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [How to Create New RxJS Operators](https://www.wearedevelopers.com/videos/683-how-to-create-new-rxjs-operators) - [Next, Nest, Nuxt… Nust?](https://www.wearedevelopers.com/videos/421-next-nest-nuxt-nust) - [Stop Using Node.js Like It’s 2020! - Alfonso Graziano](https://www.wearedevelopers.com/videos/1863-stop-using-node-js-like-it-s-2020-alfonso-graziano) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [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) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023)