> Markdown version of [/jobs/ext/47800-frontend-engineer-lead](https://www.wearedevelopers.com/jobs/ext/47800-frontend-engineer-lead). 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 Engineer Lead - **Company:** Titan OS - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Code Review, Software Debugging, Performance Tuning, Data Streaming, TypeScript, Web Applications, ReactJS, Cypress (Programming Language), Caching, Backend, Playwright, Front End Software Development, React Redux, React Testing Library, Smart Tv - **Published:** May 17, 2026 - **Apply:** https://es.indeed.com/viewjob?jk=d3d8bbe3100663bd ## About the Role Do you have experience in UX?, Are you ready to unleash your potential? We're on the lookout for driven individuals who thrive on setting ambitious goals, taking ownership and working with a relentless sense of urgency to achieve remarkable results., Passion is the secret ingredient to our success! We're searching for people who are not just passionate, but genuinely obsessed with their work. If you're the type to devour the latest articles, spend your free time researching and taking courses, and constantly seek ways to grow and learn, then you'll fit right in. Our passionate individuals learn fast, work hard, and inspire those around them with their positive energy., * 7+ years of relevant experience with React and Redux (internal patterns, performance tuning) * Strong knowledge of JavaScript, TypeScript and modern frontend tooling * Solid experience with testing frameworks (Jest, React Testing library, Cypress/Playwright…) * Experience optimizing rendering performance on constrained devices (Tvs, consoles, mobile, etc) * Strong debugging skills and ability to troubleshoot performance bottlenecks Desirable skills * Experience developing web apps for Smart TVs * Familiarity with video playback (HLS.js, Shaka Player), DRM, or streaming apps * Knowledge of Service Workers, Web Workers and caching strategies for performance and resilience ## Description We are looking for a Frontend Lead Developer to define and drive the vision for building Smart TV UI where performance, stability, and smooth UX are critical. You will work alongside our squads to shape the architectural framework of our applications, code intricate frontend components, and orchestrate the deployment of the final product that is seen in millions of homes worldwide., * Define and drive the Frontend team's technical vision to deliver a world-class user experience across the Titan OS frontend.. * Build and optimize UIs for Smart TV platforms * Write clean, sustainable, and testable code * Improve architecture and coding standards in the frontend * Enforce the implementation of unit, integration, and end-to-end tests to ensure reliability * Focus on performance, fast rendering, low memory consumption, and responsive navigation * Debug and profile apps on limited resource environments such as Smart TVs, set-top boxes * Ensure projects are delivered on time and developers are working effectively * Participate and assist in setting the long-term direction, roadmaps, and standards for the web app * Conduct code reviews of work done by other engineers in the team * Work with backend engineers, product managers, and UX designers to deliver polished features * Establish and track SLAs (internal and external), and support squads in defining KPIs, and team objectives ## 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) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [HTTP headers that make your website go faster](https://www.wearedevelopers.com/videos/1676-http-headers-that-make-your-website-go-faster) - [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) - [Microfrontends at Scale](https://www.wearedevelopers.com/videos/236-microfrontends-at-scale) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [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 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [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) - [Dev Digest 136 - No JS(on) of mine](https://www.wearedevelopers.com/magazine/482-dev-digest-136-no-js-on-of-mine)