Freelancers using Vercel in MadridFreelancers using Vercel in Madrid
ProjectsPeople
Berckan Guerrero's avatar
Berckan Guerrero
maxMadrid, Spain
Senior Full-stack AI Engineer. 14+ years building web stuff.
$25k+
Earned
7x
Hired
5.0
Rating
17
Followers
Senior Full-stack AI Engineer. 14+ years building web stuff.
Cover image for SpeedDoc: AI-powered web performance optimization
SpeedDoc: AI-powered web performance optimization tool that scans websites, diagnoses bottlenecks, and generates ready-to-implement fix code. Not generic Lighthouse advice: actual code patches developers can copy and apply directly to their codebase. Built as part of a Vercel AI Accelerator application. Scans run against live URLs, identify specific performance issues (render-blocking resources, unoptimized images, layout shifts), and return targeted fixes with before/after impact estimates. Next.js 16, TypeScript, Tailwind 4, Vercel. Personal project.
1
1.5K
Cover image for Personal portfolio built with Astro
Personal portfolio built with Astro 5 and Vue 3 using Islands architecture. Only interactive components ship JavaScript, everything else is zero-JS static HTML. Project data lives in TypeScript files with no CMS or external API calls at build time. Trilingual (EN/ES/FR) with custom i18n routing and per-locale static generation. Lazy-loaded video previews with intersection observer playback and WebP poster frames. Mouse-following parallax effect on project cards with reduced-motion support. Full dark mode with system preference detection and manual toggle. Perfect 100 across all four Lighthouse categories (Performance, Accessibility, Best Practices, SEO). 72% asset reduction (97MB ‚Üí 27MB). WCAG AA compliant. Playwright E2E testing across all routes and breakpoints.
1
300
Cover image for NurvAI: Website Redesign & Development
NurvAI: Website Redesign & Development
1
0
Cover image for Pulso (https://heypulso.com): Marketing and sales
Pulso (https://heypulso.com): Marketing and sales website for a web health monitoring service targeting small businesses in Latin America and Europe. Astro 5 static site with Stripe integration (EUR, USD, CLP), geolocation-based currency detection, and Resend API for transactional emails. Trilingual (ES/EN/FR). Four user flows in one site: email campaign recipients see personalized context, organic visitors get a free check CTA, salespeople share payment links, self-service users browse pricing and buy. Contact form via Resend API. Conditional hero based on referral source. 6 pricing tiers from free reports to monthly maintenance. Tone calibrated for Latin American SMBs. Stripe for subscriptions and one-time payments. Currency auto-switches via visitor geolocation.
1
1.5K
Vercel(2)
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
2
Cover image for Pekebyte.com
Pekebyte.com
0
3
Cover image for Size Wizard - Shopify App
Size Wizard - Shopify App
0
2
Cover image for Dietmind: AI Meal prep planner
Dietmind: AI Meal prep planner
0
4
Vercel(2)
Esteban Simón's avatar
Esteban Simón
Madrid, Spain
CTO & CPO | Technical Leadership, Digital Product
CTO & CPO | Technical Leadership, Digital Product
Cover image for CTO & CPO - B2B SaaS web app
CTO & CPO - B2B SaaS web app
0
12
Cover image for CTO & CPO - marketplace app
CTO & CPO - marketplace app
0
14
Cover image for CTO & CPO consulting for B2C E-commerce Startup app
CTO & CPO consulting for B2C E-commerce Startup app
0
12
Placeholder project card media
View more →
Vercel(1)