Freelance Frontend Engineers in Community of Madrid

Freelance Frontend Engineers in Community of MadridFreelance Frontend Engineers in Community of Madrid

Projects People

Berckan Guerrero

pro

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 LOVEDIS: B2B partnership platform connecting

LOVEDIS: B2B partnership platform connecting startups with enterprise organizations for collaborative innovation challenges in Germany. 140+ dynamic Storyblok components with 166 CMS schemas, all built from a multi-layered Figma design system with pixel-perfect implementation. Automated Figma-to-code workflow with schema synchronization scripts and asset upload pipelines. Anime.js parallax scroll effects and smooth page transitions. Full German/English localization with content-managed multilingual routing. Nuxt 4, Vue 3, Storyblok, TypeScript. Zero hardcoded content: every text, image, and layout variation is editable from the CMS. Delivered at Yumeda Studio.

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380

Cover image for Partspace: B2B SaaS marketing website

Partspace: B2B SaaS marketing website for an AI-powered procurement platform. 100+ reusable Storyblok components with 166 CMS schemas, giving the marketing team full editorial control without developer involvement. Real-time commodity pricing dashboards pulling live data from the FRED API (Federal Reserve Economic Data). Strict Content Security Policy with enterprise-grade security headers. Full English/German localization with 8 dynamic sitemap variants. Rive animations for interactive product demos. Dockerized development environment. Nuxt 4, Vue 3, Storyblok, TypeScript. LCP improved from 32.3s to 2.0s on desktop. Cookiebot/GTM consent management for GDPR compliance. Built at Yumeda Studio.

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186

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

609

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.

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616

Frontend Engineer(2)

Alejandro Rodríguez

Web Developer

Web Developer

Cover image for Pastry Ecommerce

Pastry Ecommerce

0

5

Cover image for Marketing Agency Website

Marketing Agency Website

0

1

Cover image for Multilingual WordPress Website Buildout

Multilingual WordPress Website Buildout

0

4

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Frontend Engineer(2)

Sebastiaan Wiechers

Data Engineering & Fullstack Expert 🚀

Data Engineering & Fullstack Expert 🚀

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

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8

Cover image for Development of a custom ETL solution

Development of a custom ETL solution

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6

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Frontend Engineer(2)

Gustavo Jimenez

Web Dev & PM: User Experience Guru

Web Dev & PM: User Experience Guru

Cover image for viajeselcorteingles.es

viajeselcorteingles.es

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2

Cover image for Fusio-Dose

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5

Cover image for LotesOnline.es

0

1

Cover image for Kerastase&Boots

Kerastase&Boots

0

3

Frontend Engineer(4)

Product Engineer

New to Contra

Product Engineer

Cover image for Years of building taught me one thing: the most meaningful p...

Years of building taught me one thing: the most meaningful projects are the ones that make a real difference, even in small ways.

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123

Cover image for Balancing big projects and small wins. At IKEA Digital, I’m ...

Balancing big projects and small wins. At IKEA Digital, I’m focused on making complex tools feel simple and seamless. Outside of work, I’m developing my profile through projects that help me learn, experiment, and stay creative!

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114

I’m slowly shaping my profile with projects I truly care about, crafted with curiosity, patience, and pride in the details! https://on.contra.com/krjNnL

20

114

Cover image for Not every side project needs to be big. Sometimes it’s just ...

Not every side project needs to be big. Sometimes it’s just about trying an idea, breaking it, fixing it, and finding joy in the small wins.

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83

Frontend Engineer(3)

Custom Web Solutions: From Concept to Code

Custom Web Solutions: From Concept to Code

Cover image for SwagUp

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8

Cover image for Trincico

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7

Cover image for Truckbays

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15

Cover image for Sibucán

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6

Frontend Engineer(2)

Nicholas Lehoucq

Expert in SEO, PPC & WordPress Development

Expert in SEO, PPC & WordPress Development

Cover image for Wordpress Development for an aesthetic clinic

Wordpress Development for an aesthetic clinic

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2

Cover image for Digital consultancy + Web development + SEO

Digital consultancy + Web development + SEO

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10

Cover image for Boosting SEO Rankings for Nomad Bee Travel Agency in Spain

Boosting SEO Rankings for Nomad Bee Travel Agency in Spain

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7

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Frontend Engineer(1)