About me

I'm Nossair, a frontend engineer based in Girona, Spain. My journey with programming started at a young age — I was endlessly curious about how the apps I used every day actually worked. That curiosity led me through a Computer Science degree and into a career building things for the web.

Today I work as an Expert Frontend Engineer at NTT DATA, where I tackle interesting technical challenges with React, TypeScript, and modern web technologies. Before that I led a frontend team at Additio App and worked across the full stack at several companies.

Outside of work, you'll find me at tech events, tinkering with side projects, or writing about what I'm learning. For me, building software isn't just a job — it's a craft I genuinely enjoy getting better at every day.

Online

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Work

Expert Frontend Engineer NTT DATA Europe & Latam
Sep 2025 - Present
Senior Frontend Engineer NTT DATA Europe & Latam
Oct 2024 - Sep 2025
NTT DATA Europe & Latam

NTT DATA Europe & Latam

Barcelona, Remote · 1 yr 5 mos

Expert Frontend Engineer

Sep 2025 - Present

Leading frontend architecture decisions and mentoring engineers across multiple project teams within the digital transformation consulting practice.

Senior Frontend Engineer

Oct 2024 - Sep 2025

Built and maintained large-scale web applications for enterprise clients in the banking and insurance sectors.

  • Architected micro-frontend solutions enabling independent team deployments across business domains
  • Implemented design system components used by 20+ developers across multiple squads
  • Led migration from legacy AngularJS codebase to React, reducing bundle size by 40%
  • Established frontend testing strategy achieving 80%+ coverage with unit and integration tests
React TypeScript Next.js Redux Zustand Tailwind CSS Storybook Jest Testing Library Playwright Vite Webpack Docker Jenkins Git Figma REST GraphQL Micro-frontends CI/CD
Team Lead Additio App
Jun 2024 - Sep 2024
Full Stack Developer Additio App
Jul 2022 - Sep 2024
Additio App

Additio App

Girona, Hybrid · 2 yrs 3 mos

Team Lead

Jun 2024 - Sep 2024
  • Led a cross-functional team of 5 developers, coordinating sprints and technical roadmap
  • Introduced code review culture and pair programming practices that reduced production bugs by 30%
  • Drove architectural decisions for the migration from monolith to modular frontend architecture
React TypeScript Node.js MongoDB Jira Agile/Scrum

Full Stack Developer

Jul 2022 - Sep 2024
  • Developed core features for an EdTech platform used by 500K+ teachers across 40 countries
  • Built real-time collaborative grading tools with WebSocket-based synchronization
  • Designed and implemented RESTful APIs handling 10K+ daily active users
  • Optimized frontend performance reducing initial load time by 50% through code splitting and lazy loading
React TypeScript Node.js Express MongoDB Redis WebSockets SASS Jest Docker AWS
Web Developer Digital State Agency
Mar 2022 - May 2022
Digital State Agency

Digital State Agency

Figueres, Remote · 3 mos

Web Developer

Mar 2022 - May 2022
  • Built responsive marketing websites and landing pages for local businesses
  • Integrated headless CMS solutions for content management by non-technical clients
WordPress PHP JavaScript HTML CSS Elementor
Full Stack Developer Sistemes Informatics ICON S.L.
Oct 2018 - Sep 2019
Sistemes Informatics ICON S.L.

Sistemes Informatics ICON S.L.

Figueres, On-site · 1 yr

Full Stack Developer

Oct 2018 - Sep 2019
  • Developed and maintained internal business management applications for local enterprises
Java Spring Boot JavaScript MySQL HTML CSS Bootstrap
Web Developer Zona Disseny
Feb 2017 - May 2017
Zona Disseny

Zona Disseny

Figueres, On-site · 4 mos

Web Developer

Feb 2017 - May 2017

Internship building and maintaining client websites for a local design and marketing agency.

WordPress PHP HTML CSS JavaScript Photoshop

Travelling

I love discovering new places. These are the countries I've visited so far.

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