Senior Front-End React / Next.js Developer

November 15, 2026

Hybrid

Senior

Rotterdam, Netherlands

Indeed

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Mandatory office attendance
English is required

Description

A Senior Front-End React / Next.js Developer will lead user-interface development and contribute to architectural and technical decisions, with a primary focus on front-end work and a full-stack mindset. The role also includes mentoring developers, collaborating with UX Designers, and helping maintain performant, high-quality applications.

Responsibilities

Lead the development and implementation of performant and user-friendly applications using React.js and Next.js
Review and improve application requirements, UI design, and user interaction with web products
Participate in the development of server logic, including API and server-side functionality using Node.js or C# when necessary
Make key technical decisions regarding architecture, tools, and processes
Collaborate with colleagues from diverse professional and national backgrounds
Work with GitHub and write automated tests to ensure software quality
Operate within a Continuous Integration and Deployment (CI/CD) environment
Train and support junior and senior developers, helping to improve team skills
Develop user interface components and implement them using modern front-end technologies
Collaborate with UX Designers on solutions that ensure high-quality user experience and present these solutions to the team
Be responsible for the performance and maintainability of solutions

Requirements

At least 5 years of experience as a Front-End React/Next.js Developer
Bachelor's or Master's degree in Computer Science or a comparable field
Advanced level of TypeScript and deep understanding of React.js and Next.js concepts
Extensive experience with modern JavaScript ES2017+, HTML, and CSS/SCSS
Confident proficiency in React.js and Next.js
Experience working with the Node.js or C# (.NET) server environment, and understanding the impact of server-side solutions on front-end architecture
Experience leading teams, mentoring, and making technical decisions
Practical experience working within Scrum/Agile methodologies

Conditions

Full-time employment
Hybrid work model (office and home); the company provides an ergonomic chair and a laptop for the home office
Travel compensation, pension plan, and allowance for working from home are provided
25 days of vacation
Access to over 100 training courses in the internal training center
Discount on company products provided