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I build fast, scalable web apps that move business metrics:

  • −45% page‑load
  • −30% AWS costs
  • 500k+ monthly visitors without downtime
  • Available remote (EU)
Pedro Arenas portrait

Case studies

Problem → Decisions → Architecture → Results → My role → Links → Evidence

TostaRica (2025) — Nuxt 3

  • Spikes at 500k+ monthly visitors with 0 downtime
  • Nuxt 3 + ISR, responsive images, CDN
  • LCP ~1.8–2.4s; CLS <0.1

UDIMA (2024–25) — LMS

  • +35% engagement via SSR + accessible components
  • +20% SEO/a11y scores
  • Nuxt 3 + TS; a11y roles/focus/contrast

Buscorepuestos (2022–24) — Marketplace aggregator

  • +40% search efficiency; 1h→10m deploy time
  • Next.js with legacy Angular modules; GitHub Actions
  • Query caching, targeted indexes, SSR for SEO

Impact highlights

  • Improved web app performance +45% via SSR/ISR, route‑based code splitting and perf budgets (React/Next).
  • Reduced −30% AWS costs (S3/CloudFront/Lambda/DynamoDB) via caching, compression and right‑sizing.
  • Scaled campaigns to 500k+ visits/month with 0 downtime (Nuxt 3 + CDN + image optimization).
  • Cut production errors −90% by introducing a dedicated test environment and E2E strategy (Playwright/Cypress + Cucumber).
  • Shrunk release time 1h→10m via GitHub Actions, preview builds and one‑click rollbacks.
  • Achieved +40% search efficiency; +35% LMS engagement through UX + SSR (confirm exact metric)

Development Journey

From learning to leading: How real-world projects shaped my expertise

I've always been someone eager to learn, so while finishing my studies, I took a full-stack course and learned by working on real projects with agencies like Lightbeee and Squaads. I worked on many different projects, gaining experience across the entire development spectrum. Currently, I'm focusing and getting interested in Generative AI projects and modern web technologies.

Udima
Mission Complete
+40%
User Engagement
-60%
Load Time
+25%
Mobile Usage
2024-2025
Frontend Developer

Udima

Udima is a remote university platform that allows users to take courses and get information about degrees, masters, PhDs, and more. I was responsible for modernizing their web presence and improving user experience.

The Challenge

The existing platform had poor user experience and outdated technology stack that made it difficult for students to navigate and find relevant course information.

The Solution

I redesigned the entire frontend using Nuxt 3 with TypeScript, implementing a modern, intuitive interface with improved navigation and search functionality, resulting in better user engagement.

Tech Arsenal

Nuxt 3
TypeScript
Github Actions
Netlify
Tostarica
Mission Complete
+35%
Conversion Rate
+50%
Page Views
+45%
Mobile Sales
2025
Frontend Developer

Tostarica

Tostarica is an e-commerce platform for selling artisanal biscuits in Spain. I collaborated with their team to create a fresh, modern website that showcases their products beautifully.

The Challenge

The brand needed a compelling online presence that could effectively showcase their artisanal products and convert visitors into customers in a competitive food e-commerce market.

The Solution

I developed a visually stunning, conversion-optimized website with high-quality product galleries, smooth animations, and an intuitive shopping experience that reflects the premium quality of their products.

Tech Arsenal

Nuxt 3
GitHub Actions
Netlify
Dollar
Buscorepuestos
Credit Agricole Mon Commerce
4 more projects

Technical Skills

Technologies and tools I work with to bring ideas to life.

Frontend

React
Vue.js
Angular
Next.js
Nuxt
TypeScript

Backend

Node.js
Python
Django
PostgreSQL
MongoDB
DynamoDB

Cloud & DevOps

AWS
EC2
S3
CloudFront
RDS
Lambdas
GitHub Actions

Testing & Architecture

MSW
Pacts
E2E Testing
Clean Architecture
Hexagonal Architecture

Get in touch

Currently available for Senior roles (Remote EU). Let's discuss your project or opening.

Let's connect

antonioaren2@gmail.com
github.com/antonioaren
linkedin.com/in/antonioaren

Currently Available For

  • • Senior Frontend/Full‑Stack roles
  • • Tech Lead and architecture consulting
  • • Performance, DX and CI/CD engagements
Send a Message
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