Front-end Developer

COSMOTE GLOBAL SOLUTIONS NV; Town of Belgium (WI); On-site; USD 110,000 - 150,000; Full time

Job summary

COSMOTE Global Solutions NV in the United States is seeking a highly skilled Front-end Developer to join our team. You will be responsible for developing user-facing features, ensuring UI/UX feasibility, and optimizing applications for speed and scalability.

Join our ICT solutions group to collaborate with back-end developers and designers, implement responsive design, write documentation, and contribute to high-quality, scalable web applications while communicating effectively in English.

Qualifications

• Bachelor’s degree in Computer Science or related field.
• Minimum 13 years of experience in front-end development.
• 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.

Responsibilities

• Develop new user-facing features and build 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.

Skills

JavaScript

HTML5

CSS3

REST APIs

Performance optimization

Responsive design

Team collaboration

English fluency

Education

Bachelor’s degree in Computer Science or related field

Tools

React

Angular

Vue.js

Git

Job description

COSMOTE Global Solutions NV, part of the OTE Group of Companies, is a leading ICT Systems Integrator offering a comprehensive range of ICT solutions and services. We are dedicated to delivering innovative technology solutions that empower businesses to succeed.

We are seeking a highly skilled and motivated Front-end Developer to join our talented team. In this role, you will be responsible for developing user-facing features, ensuring the technical feasibility of UI/UX designs, and optimizing applications for maximum speed and scalability.

Key Responsibilities

• Develop new user-facing features and build 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.

Requirements

• Bachelor’s degree in Computer Science or related field.
• Minimum 13 years of experience in front-end development.
• Strong proficiency in JavaScript, HTML5, and CSS3.
• Experience with modern front-end frameworks/libraries such as 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.