Open to remote · UK & US

Building interfaces
that actually work.

I'm Alejandro Sánchez, a Mid-Senior Frontend Developer based in Murcia, Spain. 4+ years crafting Angular applications — including 2 years at CERN in Geneva, one of the most demanding engineering environments in the world.

See my work → Get in touch ↓ Download CV
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About me

Frontend engineer with a taste for hard problems.

I specialise in Angular — from architecting standalone component systems to leading version migrations (v12 → v22). I've worked on projects ranging from scientific research tools at CERN to enterprise client platforms at NEORIS, including a migration project for Universidad Europea de Madrid.

I'm comfortable owning a project solo or embedded in a cross-functional Agile team. My English is professional — I worked fully in English at CERN daily, across standups, code reviews, and technical documentation with colleagues from 30+ countries.

Currently open to remote roles with UK or US companies, both full-time and contractor. EU timezone, no visa sponsorship needed.

4+
Years with Angular
2
Years at CERN, Geneva
v12→22
Angular versions covered
100%
Remote ready

What I work with

Tech Stack

⬡ Frontend
Angular TypeScript RxJS NgRx Angular Material PrimeNG Tailwind CSS SASS/SCSS Bootstrap Responsive Design Three.js GSAP Leaflet
⚙ Backend & APIs
Node.js NestJS Python Flask REST APIs Swagger / OpenAPI Microservices JWT OAuth2 Keycloak
◈ Databases
MySQL PostgreSQL MongoDB Supabase InfluxDB
▲ Build & Deploy
Git CI/CD Docker Vercel Webpack Vite Nx
✦ Testing & Quality
Jest Karma / Jasmine unittest (Python) ESLint Prettier SonarQube Postman
◉ AI & Tools
Claude (Anthropic) Codeium GitHub Copilot Figma Jira Azure DevOps Agile / Scrum

Where I've worked

Experience

NEORIS Oct 2024 – Present
Software Developer · Murcia, Spain (Remote)
  • Frontend developer across multiple Angular projects — covering layout, functionality, bug fixing, and testing.
  • Key contributor to the UEM (Universidad Europea de Madrid) migration project, owning frontend delivery end-to-end.
  • Led Angular migration from v15 to v20 with zero regression across the existing codebase.
  • Building UI screens using a proprietary client component library.
  • Currently integrating CI/CD pipelines to automate build, test, and deployment workflows.
  • Experience working both solo and in cross-functional Agile teams.
CERN Sep 2022 – Sep 2024
Software Developer · Geneva, Switzerland
  • Led frontend development of full-stack internal tools using Angular and Flask at one of the world's most demanding scientific institutions.
  • Migrated legacy Angular codebases to modern versions with lazy loading, improving performance significantly.
  • Integrated Rundeck for automated job execution directly from the frontend.
  • Built a Python automation library eliminating 15+ hours/week of manual processes across multiple teams.
  • Worked entirely in English — standups, code reviews, documentation, and demos with colleagues from 30+ countries.
Cloverdoc Oct 2021 – Jul 2022
Software Developer · Orihuela, Spain
  • Built Python automation scripts for PDF invoice data extraction and compliance checks.
  • Automated ETL workflows achieving a 30% increase in data processing efficiency.
  • Engineered error-handling frameworks that reduced processing failures significantly.

What I've built

Projects

✈️
↗ Live ↗ GitHub
Traveling Memories

Full-stack travel journal app where users log visited countries, write trip entries and explore destinations on an interactive 3D globe. Features CI/CD pipelines, 92 passing tests, image uploads via Cloudinary, and city autocomplete.

Angular 19 TypeScript Three.js Leaflet GSAP Cloudinary SCSS Tailwind GitHub Actions
💰
↗ Live ↗ GitHub
Core Investment

Personal finance app with dashboard, transaction management, budget tracking per category, scheduled recurring expenses, and data visualisation charts. Built with React and Supabase (PostgreSQL) with full authentication.

React 18 TypeScript Supabase PostgreSQL Zustand Recharts Tailwind Vite

Certifications

Courses & Certifications

🐍
Python Advanced Course
⚛️ CERN  ·  May 2023  ·  Geneva, Switzerland
🔒
Security of Research Computing Infrastructures
⚛️ CERN  ·  Oct 2023  ·  Geneva, Switzerland

Reference

What colleagues say.

"Alejandro was an outstanding developer during his two years at CERN. He took full ownership of our internal Angular tools, delivered a Python automation library that saved the team over 15 hours a week, and was always the first to raise the bar on code quality. Working in a multinational environment with engineers from 30+ countries, his communication and technical skills were consistently top-tier."

DC
David Collados Polidura
IT Department · ⚛️ CERN, Geneva

Let's talk

Open to remote opportunities.

Mid-Senior Angular developer, EU timezone, no visa sponsorship needed.
Available for full-time roles and contractor projects.

Reference available: Abel Cabezas Alonso · ⚛️ CERN · acabezas@cern.ch