Company Overview

Rakuten TV is one of the leading video streaming platforms in Europe, headquartered in Barcelona. We partner with device manufacturers, broadcasters and advertising networks to deliver premium entertainment experiences across more than 40 countries. Role

Front‑end Engineer – HTML5 Smart TV applications. Work with a high‑performing team to design, develop and maintain TV apps for Samsung Tizen, LG WebOS and other platforms. Responsibilities

Own the end‑to‑end lifecycle of features, from concept to deployment and maintenance. Collaborate with developers, QA engineers, designers and product owners. Build and optimize UIs for TV applications, ensuring fast performance on low‑end devices.

Integrate design system from Figma and publish components in Storybook. Publish TV applications to Samsung Seller Office, LG Store, Google Play and other marketplaces. Work with video players (hls.js, Shaka Player, Dash Player) and VAST for ad serving.

Research and evaluate new technologies and optimize existing solutions. Qualifications

5+ years as a JavaScript developer,



with strong experience in React and TV environments. Proficiency in TypeScript, modern frontend tooling, and monorepo use (pnpm).

Experience creating reusable UI libraries and publishing npm packages. Strong focus on performance, accessibility and focus navigation on TVs. Knowledge of video ad serving (VAST) and TV app deployment.

Experience with agile/scrum and a solid testing strategy (Jest, Cypress, Suitest). Excellent communication and collaboration skills, passion for continuous improvement.

Technology

Stack

React, Redux, Next.js Webpack, Jest, Cypress, Suitest TypeScript, JavaScript AWS CloudFront, AWS S3 Smart TV platforms: Samsung Tizen, LG WebOS, Hisense, Philips Benefits

Hybrid work model with versátil hours. Professional training, free language classes and wellbeing resources. Modern office near Barcelona beach. Medical insurance, meal and commuting allowances, and child‑care support.

📌 JavaScript Engineer (Madrid)
🏢 Rakuten Kobo
📍 Madrid