Freelancers using Vercel in MadridFreelancers using Vercel in Madrid
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Berckan Guerrero's avatar
Berckan Guerrero
pro
Madrid, Spain
14+ years building fast, accessible web apps. AI Friendly.
$5k+
Earned
5x
Hired
5.0
Rating
11
Followers
14+ years building fast, accessible web apps. AI Friendly.
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
743
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
166
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
718
Cover image for Pulso (https://heypulso.com): Prospect intelligence platform
Pulso (https://heypulso.com): Prospect intelligence platform that scans 28,000+ websites, scores them across 15 health metrics, and manages outreach from discovery to conversion. Scanner engine audits domains: SSL, performance, security headers, vulnerabilities, malware detection, SEO, accessibility. Each domain scores out of 100. Operations dashboard with prospect tables, inline notes, contact popovers, archiving, AI-generated outreach emails, and detail panels with color-coded health breakdowns. Role-based auth. Automated outreach generates custom reports per prospect via API with actual scores and recommendations. 14 years of web maintenance and optimization went into the scoring logic. Every check reflects real patterns found across hundreds of sites. 40,000+ domains. 15 metrics. Sub-second queries. Under €5/month infra.
1
725
Vercel(2)
Facundo Cappella's avatar
Facundo Cappella
max
Madrid, Spain
Tech Lead | Solution Architect | AI Engineer
120
Followers
Tech Lead | Solution Architect | AI Engineer
Cover image for Pomelo - Brand DNA Analyzer
Pomelo - Brand DNA Analyzer
1
0
Cover image for Whitepaper Finder
Whitepaper Finder
1
0
Cover image for Landing Page - Tech Company
Landing Page - Tech Company
1
16
Cover image for Landing Page - Ed Tech
Landing Page - Ed Tech Company
1
29
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
1
Cover image for Pekebyte.com
Pekebyte.com
0
2
Cover image for Size Wizard - Shopify App
Size Wizard - Shopify App
0
0
Cover image for Dietmind: AI Meal prep planner
Dietmind: AI Meal prep planner
0
2
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
10
Cover image for CTO & CPO - marketplace app
CTO & CPO - marketplace app
0
11
Cover image for CTO & CPO consulting for B2C E-commerce Startup app
CTO & CPO consulting for B2C E-commerce Startup app
0
8
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