Freelancers using TypeScript in Madrid

Freelancers using TypeScript in MadridFreelancers using TypeScript in Madrid

Projects People

Berckan Guerrero

maxMadrid, Spain

Founders' Tech Partner | Full-Stack AI Engineer | 14 yrs exp

$25k+: Earned

8x: Hired

5.0: Rating

20: Followers

Founders' Tech Partner | Full-Stack AI Engineer | 14 yrs exp

Cover image for PartSpace: AI-Powered B2B Procurement Platform

PartSpace: AI-Powered B2B Procurement Platform

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Cover image for NurvAI: Website Redesign & Development

NurvAI: Website Redesign & Development

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Cover image for Pulso: Prospect Intelligence Dashboard

Pulso: Prospect Intelligence Dashboard

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Cover image for Raven: AI Knowledge Management Platform

Raven: AI Knowledge Management Platform

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Angel Jaramillo

proMadrid, Spain

Fullstack Developer & Framer Expert

$5k+: Earned

10x: Hired

5.0: Rating

171: Followers

expert

expert

Fullstack Developer & Framer Expert

Cover image for Digital Marketing Landing Page Development

Digital Marketing Landing Page Development

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Cover image for AGENTME — AI Agent Platform for Jobs & Freelance

AGENTME — AI Agent Platform for Jobs & Freelance

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Cover image for AdPanel: fixing activation for an AI UGC ad platform

AdPanel: fixing activation for an AI UGC ad platform

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Cover image for Stilta — YC-backed Agentic AI Startup

Stilta — YC-backed Agentic AI Startup

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Matias Fourcade

Full Stack Web Engineer & UI/UX Designer

1x: Hired

6: Followers

Full Stack Web Engineer & UI/UX Designer

Cover image for Frontend engineering Upword AI

Frontend engineering Upword AI

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Cover image for Webflow Ecommerce

Webflow Ecommerce

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Cover image for Web design and webflow development

Web design and webflow development

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Cover image for Ravenscroft UI/UX designer and webflow development

Ravenscroft UI/UX designer and webflow development

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Esteban Aleart Salas

Full Stack Dev & SaaS Architect, scalable B2B platforms.

New to Contra

Full Stack Dev & SaaS Architect, scalable B2B platforms.

Cover image for Nakama (wearenkm.com (http://wearenkm.com)) es un

Nakama (wearenkm.com (http://wearenkm.com)) es un ecosistema de consultoría y desarrollo enfocado en la creación de productos digitales escalables. Trabajamos con startups y empresas en crecimiento para diseñar, construir y evolucionar plataformas web, SaaS y soluciones basadas en inteligencia artificial. Nuestro enfoque combina desarrollo full stack (JavaScript, React, Next.js), arquitectura de sistemas e integración de tecnologías modernas como APIs, automatización y modelos de IA (embeddings, RAG), permitiendo transformar ideas en productos sólidos y preparados para crecer. Más que desarrollo, en Nakama aportamos visión técnica y de producto, ayudando a tomar decisiones estratégicas que eviten deuda técnica y aseguren escalabilidad a largo plazo.

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Cover image for TaskManager is a project and task

TaskManager is a project and task management platform that offers tools to organize and assign tasks, track progress, and collaborate with team members. Key Features: * Project and task management * Task assignment and progress tracking * Team collaboration and communication * Productivity reporting and analytics * Integration with calendars and email Advantages: * Simplifies project planning and organization * Enhances team collaboration and communication * Allows for progress tracking and identification of areas for improvement * Provides reports and analytics for informed decision-making

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Cover image for Parabola is a no-code automation

Parabola is a no-code automation platform that allows users to create custom workflows and automate tasks without requiring extensive coding knowledge. The platform provides a visual interface for designing workflows, integrating with various apps and services, and automating tasks. Key Features: * No-code workflow automation * Visual interface for designing workflows * Integration with various apps and services * Customizable workflows * Automation of repetitive tasks

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Cover image for * Personal Assistant: friendly and intelligent

* Personal Assistant: friendly and intelligent personal assistant, designed to provide helpful and informative responses. * Skills: can understand and respond to questions and has knowledge in a wide range of topics, from technology and programming to history and culture. * Conversation: can engage in real-time conversations, responding to questions and providing helpful information. * Information Search: can search for information from a variety of sources to provide accurate and up-to-date answers. * Learning: Tontin can learn and improve over time, thanks to user feedback and interaction. * Accessibility: is available 24/7, and can be accessed from any device with an internet connection. * Personalization: Tontin can adapt to the needs and preferences of each user, providing personalized and relevant responses.

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Javier Martinez

24/7 AI Automation | Receptionist + Sales + Workflows

8: Followers

24/7 AI Automation | Receptionist + Sales + Workflows

Cover image for AI Agency Website — Full

AI Agency Website — Full Stack + n8n💯

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Cover image for How to replace a $2,000/mo

How to replace a $2,000/mo manual reporting task with a $3/mo AI workflow. ⚡️ Here is a look under the hood of our automated CEO Daily Briefing system: • Orchestration: n8n scheduled trigger at 08:00 AM. • Data Sources: Google Sheets (Parallel execution) + Industry RSS feeds. • AI Layer: GPT-4o mini analyzing metrics and writing executive insights (< $0.01 per run). • Delivery: Formatted Telegram notification.

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Cover image for Building custom AI architectures that

Building custom AI architectures that actually scale. 💻⚡️ Here is a peek under the hood of a production-ready AI system: • Terminal: Claude Code as the primary engine. • Harness: Gentleman AI for memory persistence (Engram) and spec-driven development (SDD). • Automation Server: Self-hosted n8n running on a dedicated Hostinger VPS.

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Cover image for Built a full AI consulting

Built a full AI consulting business system — from website to outreach machine. For a boutique AI consulting firm targeting mid-market companies in the US and Europe, I designed and shipped the full technical stack: Production website (React + TypeScript + Express) Not just a landing page. A conversion machine: lazy-loaded routes, per-page SEO metadata, structured data for Google, a sitemap, an OG image for social sharing, and Lighthouse-ready performance fixes (including a Framer Motion LCP bug that was silently tanking search rankings). AI Diagnostic Tool A multi-step lead qualification form that calls Claude under the hood, generates a personalized automation ROI report for each prospect, and delivers it at a unique URL — with prompt injection protection baked in (XML-delimited user inputs, system prompt hardening). Security layer CSP headers, correct trust-proxy config for a Cloudflare + Railway dual-hop topology, hardened email notification logic, and temp file cleanup that survives errors. Production-grade, not tutorial-grade. LinkedIn prospecting engine A Python + Playwright scraper that: Rotates across 10 industry niches Qualifies leads by title, location, and post recency Auto-generates personalized connect requests (≤300 chars) and follow-ups via Anthropic API Exports to Excel, deduplicates across runs Currently targeting Property Management decision-makers in Florida & Texas This is what "full-stack AI consulting infrastructure" actually looks like in practice. What was built A production-ready AI consulting business stack, covering six layers end to end. On the frontend, a React SPA with TypeScript, lazy-loaded routes, per-page SEO metadata via react-helmet-async, and full internationalization in English, Spanish, and Danish. The SEO layer included a sitemap, robots.txt, JSON-LD structured data schemas for Google, a custom OG image at 1200×630px for social sharing, and a performance fix for a Framer Motion bug that was silently blocking the page's Largest Contentful Paint — meaning Google couldn't properly index the main headline. The backend is an Express + TypeScript API deployed on Railway, hardened with Content Security Policy headers, correct trust proxy configuration for a Cloudflare + Railway dual-hop topology, and proper temp file cleanup that survives errors. The AI feature is a multi-step diagnostic form that sends the prospect's business data to Claude, generates a personalized automation ROI report, and delivers it at a unique shareable URL — with prompt injection protection built in so user-submitted text can never hijack the LLM's instructions. On the security side, all user-controlled fields are wrapped in XML delimiters in the prompt, environment variable handling was hardened to eliminate silent fallbacks, and no sensitive data leaks through error paths. Finally, the outreach system is a Python + Playwright scraper that rotates across industry niches, qualifies leads by title, location, and post recency, then uses the Anthropic API to generate personalized LinkedIn connect requests and follow-up messages for each lead — exporting everything to Excel with deduplication across runs. Key technical problems solved LCP blocked by Framer Motion: opacity:0 on H1 prevented Google from indexing the headline. Fixed by rendering plain HTML on first paint. Prompt injection risk: All user-submitted fields wrapped in XML delimiters + system prompt instruction to treat them as data, not commands. Dual-hop proxy misconfiguration: trust proxy: 1 was wrong for a Cloudflare → Railway topology. Corrected to 2 to get real client IPs in logs and rate limiting. Location-aware lead qualification: Scraper's filter system refactored to support per-niche target_locations, enabling pivot from Danish to US markets without touching core logic.

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Andrii Iudchenko

Certified Shopify Plus Developer | React | Hydrogen | Remix

Certified Shopify Plus Developer | React | Hydrogen | Remix

Cover image for Vent Covers Unlimited

Vent Covers Unlimited

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Cover image for Drift

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Cover image for The Private Chef

The Private Chef

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Cover image for Fugazzi Fragrances

Fugazzi Fragrances

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Full Stack Dev — SaaS, dashboards & AI integrations

New to Contra

Full Stack Dev — SaaS, dashboards & AI integrations

Cover image for II AMAE Awards — institutional

II AMAE Awards — institutional platform / awards system for audiovisual awards, with public submissions, a review dashboard and a members' voting portal. Built end-to-end at WEARECAPA with Next.js and Supabase, running in production with multiple user roles.

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Cover image for RENEW — Health & Longevity.

RENEW — Health & Longevity. Editorial website (renew-habits.com (https://renew-habits.com)) covering nutrition, biohacking and wellness. Designed and built end-to-end at WEARECAPA with Next.js: clean editorial layout, structured content hub and a fully responsive reading experience.

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Cover image for Bookarta — all-in-one SaaS for

Bookarta — all-in-one SaaS for restaurants: intuitive digital menus and a 24/7 booking system in one place, manageable from any device. In production with active clients and recurring revenue. Built end-to-end at WEARECAPA with Next.js, Supabase and Stripe.

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Cover image for Portfolio website for Cristina Gómez,

Portfolio website for Cristina Gómez, video editor & post-production coordinator (criagova.org). Designed and built end-to-end at WEARECAPA with Next.js — responsive, fast and pixel-perfect, with a curated showcase of her commercial and film work.

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Sergio Gutierrez

Full Stack Engineer. Building mobile app prototypes.

7: Followers

Full Stack Engineer. Building mobile app prototypes.

Cover image for Some old work of mine: Trufario, an app tracking your dog's ...

Some old work of mine: Trufario, an app tracking your dog's most important events throughout the day to find triggers for your companion's problems. One of the first apps I created from its conception to the stores and still proud of it.

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Cover image for Today's exploration is a redesign of one of my first publish...

Today's exploration is a redesign of one of my first published apps: Trufario, your doggo's personal tracker. Do you have a favorite?

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Cover image for Considering what my next prototype would be. This is today's...

Considering what my next prototype would be. This is today's quick design session exploring the idea of a self-hosted location tracker (bye bye Google Maps Timeline). Wondering if anyone here would like to use it.

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Cover image for A glimpse into my most recently published app for an investm...

A glimpse into my most recently published app for an investment client I had the luck to work with

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