> Markdown version of [/jobs/ext/1308057-frontend-developer-react](https://www.wearedevelopers.com/jobs/ext/1308057-frontend-developer-react). 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). --- # Frontend Developer (React) - **Company:** Thoughtworks - **Location:** Valencia, Spain - **Contract:** Permanent contract - **Skills:** HTML, JavaScript (Programming Language), Agile Methodology, Cascading Style Sheets (CSS), Continuous Delivery, Continuous Integration, Software Design Patterns, Pair Programming, TypeScript, Web Applications, Web Standards, Test-Driven Development (TDD), ReactJS, Backend, Front End Software Development - **Published:** July 17, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role Technical Skills You have two or more years* of experience. You can write clean, high-quality JavaScript and are also able to spot (and improve) bad code. You have experience developing modular web components using the latest HTML, CSS and JavaScript standards. You are comfortable using React framework. You have experience with HTTP, multi-tiered web architectures and the latest web standards. You have created cross-browser/platform, responsive and mobile-first experiences using complex CSS layouts and best practices. You are familiar with Agile, Lean and/or Continuous Delivery. You are familiar with concepts such as design systems, atomic design, micro frontends, progressive web apps and backend for frontend. Bonus points if you have some experience with TypeScript, exposure to TDD and continuous integration/delivery approaches. Professional Skills You enjoy influencing others and always advocate for technical excellence while being open to change when needed. You have a passion for learning and sharing knowledge as well as a desire to create meaningful solutions for business problems. You are resilient in ambiguous situations and can approach challenges from multiple perspectives. *For candidates with less than two years of experience, please visit the Grads and career changers page on our careers site. ## Description UI Developers collaborate with Business and Quality Analysts, Designers, Project Managers and more to build user interfaces that will create meaningful change for our clients. They listen thoughtfully to understand the context of a business problem and write clean and iterative code to deliver the right result. By balancing strong opinions with a willingness to find the right answer, UI Developers bring integrity to technology, ensuring all voices are heard. At Thoughtworks, we believe in going above and beyond the standard and are committed to delivering best-in-class solutions that exceed our clients' expectations. Our standard engineering and delivery practices reflect our commitment to quality, and our team is always looking to innovate and improve., You will learn and adopt best practices like writing clean and reusable code using TDD, pair programming and design patterns. You will use continuous delivery practices as needed to deliver high-quality web applications and value to end customers. You will work in collaborative, value-driven teams to build innovative customer experiences for our clients. You will create scalable UI systems that are delightful, high functioning and accessible to all audiences. You will partner with other technologists from cross-functional teams advocating devops culture. You will collaborate with a variety of teammates to build features, design concepts and interactive prototypes and ensure best practices and UX specifications are embedded along the way. You will take ownership and accountability beyond individual deliverables, always pushing the envelope to deliver awesome results for our clients. You will learn, digest and subsequently apply the latest technology thinking from our Technology Radar to solve client problems. ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [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) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) ## Related Articles - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [25 Essential Tools for Front End Developers](https://www.wearedevelopers.com/magazine/210-25-essential-tools-for-front-end-developers) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [What is a web developer?](https://www.wearedevelopers.com/magazine/18-what-is-a-web-developer)