Nubelson Fernandes

Senior Frontend Engineer @ CERN

About

Lead Frontend Developer with 6+ years of experience building and scaling mission-critical applications at CERN, Thales, and Vodafone. Specialized in React/TypeScript and modern web architectures, with proven expertise in team leadership, performance optimization, and delivering high-quality software aligned with strategic business goals.

Country

Portugal

City

Lisbon Metropolitan Area

Industry

Computer Software

Skill

Fundamentos de Inteligência Artificial, React Hooks, React Hook Form, Tanstack Query, Next.js, Tailwind CSS, Claude Code, Inteligência artificial, Vitest, Material-UI, Software Infrastructure, Software Design, REST APIs, Babel.js, Webpack, Redux, Jest, Design de software, Engenharia web, JavaScript

Experience

Senior Frontend Engineer

CERN

2025-3 - 2026-4 · 1 yr 2 mos

Lisboa, Portugal

I take the lead in building and optimizing user interfaces, ensuring they are fast, scalable, and user-friendly. I collaborate closely with designers, backend developers, and stakeholders to create seamless digital experiences. My role also involves maintaining code quality, and making key architectural decisions to keep projects efficient and maintainable.

Frontend Engineer

Thales in Portugal

2022-2 - 2025-3 · 3 yrs 2 mos

Lisboa, Portugal

Frontend Developer

emagine - Portugal

2021-5 - 2021-11 · 7 mos

Lisboa, Portugal

Frontend Developer and Cloud Architect Engineer

Sysmatch

2021-4 - 2021-5 · 2 mos

Lisboa, Portugal

Frontend Developer

PrimeIT

2020-9 - 2020-12 · 4 mos

Porto, Portugal

Full Stack Developer

Nubelsondev

2019-1 - 2020-9 · 1 yr 9 mos

Portugal

Development of complete applications using Stack Node, React and React Native. -JavaScript ES6+ -ExpressJS -MongoDB -Socket.io -HTML & (S)CSS -GatsbyJS -JestJS -Styled Components -Redux