Freelancers using Next.js in Madrid

Freelancers using Next.js in MadridFreelancers using Next.js in Madrid

Projects People

Full Stack Dev & SaaS Architect, scalable B2B platforms.

New to Contra

Full Stack Dev & SaaS Architect, scalable B2B platforms.

Cover image for TicketXEvent is a web platform

TicketXEvent is a web platform for event ticketing designed to streamline the discovery, purchase, and management of event tickets. The system allows users to browse upcoming events, view details and complete secure purchases with a seamless, user-friendly experience. Designed and implemented a responsive frontend interface with intuitive navigation and interactions. Built a scalable backend to handle event data, user authentication, and transaction processing. Integrated secure payment workflows and order management systems. Ensured performance optimization and maintainability through clean architecture and modular code. Delivered well-documented, production-ready code suitable for continuous enhancements. Tech stack highlights: React/Next.js, Node.js, API integrations, responsive design, secure transaction flows.

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Cover image for Lyons One is a web‑based

Lyons One is a web‑based CRM built for managing leads in an educational platform headquartered in Uruguay. The project focuses on streamlining lead capture, tracking, and conversion processes through intuitive admin tools and clear performance metrics. Key features include: Lead registration and segmentation by source, interest, and status Conversion pipeline visualization Lead search, filter, and activity tracking Analytics to improve lead generation and follow‑up strategies Technologies used: Next.js, React, Node.js, PostgreSQL, Tailwind CSS My role encompassed full‑stack architecture design, frontend and backend development, implementation of real‑time data features, and deployment.

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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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AI & SaaS Developer with Product Expertise

AI & SaaS Developer with Product Expertise

Cover image for Developing an AI-Powered Tool for Gathering Customer Feedback

Developing an AI-Powered Tool for Gathering Customer Feedback

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Cover image for Developing a Chatbot and Widget for Property Managers

Developing a Chatbot and Widget for Property Managers

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Cover image for Chrome Extension for Scheduling Meetings Globally

Chrome Extension for Scheduling Meetings Globally

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Software Engineer: Building Awesome Webs Apps & Products

Software Engineer: Building Awesome Webs Apps & Products

Cover image for Lead Engineer, eth-roulette.com

Lead Engineer, eth-roulette.com

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Cover image for CTO, OpenBroker.com

CTO, OpenBroker.com

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Cover image for CTO, Subletny.com

CTO, Subletny.com

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Cover image for Full-stack developer – OB Studio

Full-stack developer – OB Studio

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Josephine Gyamera

Mobile & SaaS Developer

New to Contra

Mobile & SaaS Developer

Cover image for Loyatii – All Perks, One App

Loyatii – All Perks, One App

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Cover image for Automated Comment Analysis Project

Automated Comment Analysis Project

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Cover image for Your body changes

Your body changes

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WordPress & Elementor Expert ✦ Digital Marketing Strategist

WordPress & Elementor Expert ✦ Digital Marketing Strategist

Cover image for Physis Digital - Website Development

Physis Digital - Website Development

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Cover image for Handarholf.com – A Digital Canvas for an Artist’s Identity

Handarholf.com – A Digital Canvas for an Artist’s Identity

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Cover image for Modern Website for a Luxury Barbershop in Madrid

Modern Website for a Luxury Barbershop in Madrid

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Gustavo Jimenez

Web Dev & PM: User Experience Guru

Web Dev & PM: User Experience Guru

Cover image for LotesOnline.es

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Cover image for viajeselcorteingles.es

viajeselcorteingles.es

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Cover image for Fusio-Dose

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Cover image for Kerastase&Boots

Kerastase&Boots

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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

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Cover image for Development of an AI-powered product configurator

Development of an AI-powered product configurator

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Cover image for Development of a custom ETL solution

Development of a custom ETL solution

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Berckan Guerrero

pro

14+ years building fast, accessible websites. AI Friendly.

1x: Hired

5.0: Rating

5: Followers

14+ years building fast, accessible websites. 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. Built with Next.js 16, TypeScript, and Tailwind 4 on Vercel. Designed for developers who want actionable performance fixes instead of generic audit reports. Currently in development as part of a Vercel AI Accelerator application. Personal project.

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Cover image for RAVEN: AI-powered knowledge management app

RAVEN: AI-powered knowledge management app with notes, tasks, and a built-in AI chat. Built with Nuxt 4, Vue 3, TypeScript, Supabase (PostgreSQL, Auth, RLS), and Gemini AI. 34 components, 25 composables, 13 database tables, 12 AI functions including streaming chat, voice input, and automatic conversation titles. Full i18n (EN/ES), offline support with sync queue, real-time CRUD, folder organization, and workspace-based content separation. Built for a private client, actively developed.

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Cover image for LOVEDIS: B2B innovation platform for

LOVEDIS: B2B innovation platform for a German ecosystem connecting startups and corporate partners. Built with Nuxt 4, Vue 3, and TypeScript on a headless CMS architecture. Delivered during my time at Yumeda Studio, this website was developed creating 110+ reusable CMS components and 200+ Vue components total, a custom responsive image system with modern format support and art direction per breakpoint, centralized SEO management, Content Security Policy with enterprise security headers, and a design system with 70+ tokens enforced across the entire codebase. GDPR-compliant EU deployment.

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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.

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