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# JS Developer

- **Company:** Coolblue B.V.
- **Location:** Rotterdam, Netherlands
- **Experience:** Starter
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Automation of Tests, C Sharp (Programming Language), Cascading Style Sheets (CSS), Continuous Integration, Github, Design of User Interfaces, Node.Js, Scrum Methodology, Next.js, TypeScript, Web Applications, ReactJS, Backend, Information Technology, Front End Software Development
- **Published:** October 21, 2026
- **Apply:** https://www.werk.nl/nl/vacatures/71860201

## About the Role

As a Front-End React/Next.js Developer, you will help improve the user experience of our web applications at Coolblue, while being comfortable working across the full stack when needed. This role is primarily front-end focused, with hands-on full-stack expectations including back-end development in TypeScript and C#.
You enjoy doing this - Developing and implementing performant, user-friendly applications using React.js and Next.js. - Reviewing application requirements and interface designs, and identifying web-based user interactions. - Contributing to back-end logic such as APIs and server-side functionality using technologies like Node.js or C# when needed. - Making technical decisions, including about architecture, tools, and processes, with a full-stack perspective. - Collaborating with team members from various backgrounds and nationalities. - Working with GitHub and writing automated tests to ensure high-quality software. - Working in a fast-paced Continuous Integration & Deployment environment.
You recognize yourself in the following

 - You have 3+ years of experience as a Front-End React/Next.js Developer. - You have a BSc or MSc in Computer Science or comparable. - At least 1 to 3 years of hands-on experience with TypeScript. - You have in-depth knowledge of TypeScript and React.js/Next.js concepts. - You have experience with modern JavaScript (ES2017+), HTML, and CSS/SCSS. - You have experience with a Back-End runtime environment such as Node.js or C# (.NET). - Working with Scrum/Agile is second nature to you. - You are fluent in English. - You live in The Netherlands.
This is what you're looking for in a job

 - Money. - Working together in an international environment with colleagues from the Netherlands, Belgi...