Senior Front-End Developer — UI/UX & Performance

COSMOTE GLOBAL SOLUTIONS NV; Belgique; Sur place; EUR 70 000 - 110 000; Plein temps

Résumé du poste

COSMOTE Global Solutions NV in Belgium is seeking a highly skilled Front-end Developer to join our ICT team. You will build user-facing features, implement UI/UX designs, and optimize applications for speed and scalability across devices.

You will collaborate with back-end developers and designers, maintain code quality through reviews, and write technical documentation. The ideal candidate has a Bachelor’s degree and 13+ years of front-end experience with modern frameworks and Git.

Qualifications

• Bachelor’s degree in Computer Science or related field.
• Minimum 13 years of front-end development experience.
• Strong proficiency in JavaScript, HTML5, and CSS3.
• Experience with React, Angular, or Vue.js.
• Familiarity with RESTful APIs and asynchronous request handling.
• Knowledge of browser rendering behavior and performance optimization techniques.
• Experience with version control systems, preferably Git.
• Understanding of responsive design principles and mobile-first development.
• Good problem-solving skills and attention to detail.
• Ability to work well in a team environment and communicate effectively.
• Fluent in English.

Responsabilités

• Develop new user-facing features and reusable code and libraries for future use.
• Ensure the technical feasibility of UI/UX designs.
• Optimize applications for maximum speed and scalability.
• Collaborate closely with back-end developers and web designers to improve usability.
• Maintain and improve website and application performance.
• Implement responsive design to ensure compatibility across devices.
• Participate in code reviews and contribute to team knowledge sharing.
• Write and maintain technical documentation.

Connaissances

JavaScript

HTML5

CSS3

React

Angular

Vue.js

RESTful APIs

Asynchronous requests

Browser performance

Git

Teamwork

Communication

English

Formation

Bachelor’s degree in Computer Science or related field

Outils

Git

Description du poste

COSMOTE Global Solutions NV in Belgium is seeking a highly skilled Front-end Developer to join our ICT team. You will build user-facing features, implement UI/UX designs, and optimize applications for speed and scalability across devices.

You will collaborate with back-end developers and designers, maintain code quality through reviews, and write technical documentation. The ideal candidate has a Bachelor’s degree and 13+ years of front-end experience with modern frameworks and Git.