Freelance Fullstack Engineers in Community of MadridFreelance Fullstack Engineers in Community of Madrid
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Berckan Guerrero's avatar
Berckan Guerrero
pro
Madrid, Spain
14+ years building fast, accessible websites. AI Friendly.
1x
Hired
5.0
Rating
7
Followers
14+ years building fast, accessible websites. AI Friendly.
Cover image for PartSpace: B2B SaaS marketing website
PartSpace: B2B SaaS marketing website for the manufacturing sector, built with Nuxt 4 and Storyblok. Developed 100+ reusable CMS components, integrated real-time commodity pricing via FRED API, implemented strict Content Security Policy (CSP) with enterprise-grade security headers, and delivered full English/German localization with 8 dynamic sitemap variants. Delivered during my time at Yumeda Studio.
2
545
Cover image for Where Are They? (dondeestan.cl): Full-stack platform
Where Are They? (dondeestan.cl): Full-stack platform built on Supabase PostgreSQL from the ground up. Designed and implemented the complete database architecture: 63 migrations, Row Level Security (RLS) policies, full-text search with Spanish stemming, and incremental data sync using SHA-256 change detection. The project aggregates 3,216+ records from 4 external sources through a Python ETL pipeline with 99% deduplication accuracy, AI-powered image restoration (Real-ESRGAN + GFPGAN), and a Nuxt 3 frontend. Hosted on GitHub with a monorepo structure, CI/CD via GitHub Actions, and Vercel deployment. This project demonstrates deep Supabase expertise: auth, storage, database design, RLS, edge functions, and seamless integration with a modern frontend stack.
2
354
Cover image for THE SPOT: Ongoing maintenance and
THE SPOT: Ongoing maintenance and DevOps for Germany's leading film industry news service. Delivered during my time at Yumeda Studio. Security hardening, custom PHP plugin development, infrastructure management, and performance optimization that took PageSpeed from 54 to 99.
2
353
Cover image for berck.io: personal portfolio with multilingual
berck.io: personal portfolio with multilingual support (EN/ES/FR), personalized client pages, and Supabase-powered private portals. Built for speed: Islands architecture with partial hydration and a 72% reduction in asset size.
2
330
Fullstack Engineer(5)
Pedro Molina's avatar
Pedro Molina
Madrid, Spain
Fullstack Engineer: AI-Driven Solutions
11
Followers
Fullstack Engineer: AI-Driven Solutions
Cover image for Tequeño Studios | Agencia Digital Creativa
Tequeño Studios | Agencia Digital Creativa
0
1
Cover image for Auratify
Auratify
0
1
Cover image for Pekebyte.com
Pekebyte.com
0
2
Cover image for Size Wizard - Shopify App
Size Wizard - Shopify App
0
0
Fullstack Engineer(2)
Josué Cortina's avatar
Josué Cortina
Madrid, Spain
Custom Web Solutions: From Concept to Code
Custom Web Solutions: From Concept to Code
Cover image for Truckbays
Truckbays
0
15
Cover image for Sibucán
Sibucán
0
6
Cover image for SwagUp
SwagUp
0
8
Cover image for Trincico
Trincico
0
7
Fullstack Engineer(2)
Sebastiaan Wiechers's avatar
Sebastiaan Wiechers
Madrid, Spain
Data Engineering & Fullstack Expert 🚀
Data Engineering & Fullstack Expert 🚀
Cover image for Development of a custom ETL solution
Development of a custom ETL solution
0
6
Cover image for Retrieval Augmented Generation (RAG) LLM Chatbot
Retrieval Augmented Generation (RAG) LLM Chatbot
0
11
Cover image for Development of an AI-powered product configurator
Development of an AI-powered product configurator
0
8
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Fullstack Engineer(1)