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Matthew PalaciosMP

Matthew Palacios

Software engineer

€100/day
Santiago de Compostela, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Matthew

Self-taught full-stack developer with ongoing training. With over two years of building and maintaining real-world web applications in production —almost always as a sole developer or in very small teams—, my work focuses on the TypeScript stack (Next.js + Supabase) and the integration of conversational AI agents on WhatsApp. My strength lies in delivering functional product from start to finish: from the frontend to the database and integrations.
  • Spanish

    Native or bilingual

  • Portuguese

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Linkee HUB
    Full Stack Developer
    SOFTWARE PUBLISHING
    August 2025 - Today (1 year)
    Río de Janeiro, Brazil
    Full Stack Developer responsible for the design, construction, and maintenance of SaaS platforms and AI-powered solutions, from product conception to production deployment.

    Key responsibilities and achievements:

    Development of full-stack web applications with TypeScript, React, and Next.js, integrated with Supabase and PostgreSQL.
    Design and implementation of AI agents integrated with WhatsApp for support, lead qualification, and business process automation.
    Creation of automation pipelines with n8n, LangChain, and LangGraph, eliminating repetitive manual tasks.
    Building administrative panels, CRMs, and business-results-oriented dashboards.
    Responsible for the complete cycle: architecture, development, deployment on Vercel, and continuous integration.
    JavaScript / TypeScript Langchain SQL REST API
  • BeOne Tecnologia
    Founder & Software Engineer
    SOFTWARE PUBLISHING
    January 2024 - Today (2 years and 7 months)
    Santiago de Compostela, Spain
    Own company for automation, AI, and system integration. Responsible for architecture, development, and delivery of end-to-end solutions for clients in multiple sectors.

    Sacola (Delivery + AI) — Complete fruit and vegetable delivery platform with CRM, affiliates, recurring subscriptions, and order tracking. I built the AI-powered WhatsApp support agent (WhatsApp API + Claude via N8N), using advanced Prompt Engineering, anti-hallucination techniques, and graceful fallback. Result: significant reduction in the operational load of the support team without loss of quality in the customer experience. (E-commerce Multi-tenant + AI Agent) — Multi-tenant architecture with three brands on shared infrastructure. Integration with Asaas (PIX/card), Bling ERP (stock), and a consultative support agent with Claude via N8N.
    — Digital hub connecting real estate agents to affiliates with automatic lead distribution, commission, and complete transaction flow.
    — N8N pipeline with intelligent lead scraping from Casa dos Dados, Instagram, Google Business, and Receita Federal, with automated outreach via WhatsApp, eliminating manual prospecting. (Health App + Gamification) — Next.js + Supabase API App, PWA.
    JavaScript / TypeScript SQL REST API Langchain Software Development

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Skill set

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