Freelancers using PostgreSQL in SpainFreelancers using PostgreSQL in Spain
Senior Full-Stack Architect & Strategic Product Lead
    $10k+
    Earned
    3x
    Hired
    5.0
    Rating
    26
    Followers
Senior Full-Stack Architect & Strategic Product Lead
Full Stack AI Engineer | Claude, AI Agents & Automation
    $1k+
    Earned
    2x
    Hired
    5.0
    Rating
    39
    Followers
Full Stack AI Engineer | Claude, AI Agents & Automation
Cover image for Agentic AI Persona Chat (Replit)
Agentic
Agentic AI Persona Chat (Replit) Agentic AI Persona Chat (Replit) is an interactive AI chat application built on Replit that enables users to converse with specialized AI personas—such as a Helpful Assistant or Socratic guide—designed to reason, guide, and act autonomously based on user intent. The project showcases agentic behavior, modular personas, and real-time conversational intelligence in a developer-friendly environment.
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Cover image for Agentic AI Persona Chat (Replit)
Agentic
Agentic AI Persona Chat (Replit) Agentic AI Persona Chat (Replit) is an interactive AI chat application built on Replit that enables users to converse with specialized AI personas—such as a Helpful Assistant or Socratic guide—designed to reason, guide, and act autonomously based on user intent. The project showcases agentic behavior, modular personas, and real-time conversational intelligence in a developer-friendly environment.
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Full Stack Developer
    $5k+
    Earned
    4x
    Hired
    5.0
    Rating
    110
    Followers
Full Stack Developer
Full Stack Web Engineer & UI/UX Designer
    1x
    Hired
    7
    Followers
Full Stack Web Engineer & UI/UX Designer
I build the software that runs the business
New to Contra
I build the software that runs the business
Cover image for Company Brain. Facts you can
Company Brain. Facts you can trust from several sources Problem Small teams live in chat and notes. Prices, owners, and status drift across threads — and nobody has one place that stays true. What I built Company Brain: email, meetings, and Slack feed into structured facts. When something conflicts, it lands in a simple review inbox for a quick human check — not another wiki. Result Decisions stop drifting. The team gets searchable facts with a human still in the loop; pilots start white-glove and scoped.
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Python Developer automating business workflows and building.
Python Developer automating business workflows and building.
Cover image for https://midnight-escale.web.app/  Firebase
https://midnight-escale.web.app/ Firebase
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30
Cover image for https://abogado-gentile.web.app/  Firebase
https://abogado-gentile.web.app/ Firebase
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30
Cover image for https://fenopharm.eu/  Website w. Firebase
https://fenopharm.eu/ Website w. Firebase
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43
Data Engineering & Fullstack Expert 🚀
Data Engineering & Fullstack Expert 🚀
agencra.xyz - Automated Pipelines. Ship in days, not weeks.
    $•••••
    Earned
    27x
    Hired
    5.0
    Rating
    13
    Followers
agencra.xyz - Automated Pipelines. Ship in days, not weeks.
Cover image for Yield-Nexus — Real-Time Crypto Portfolio
Yield-Nexus — Real-Time Crypto Portfolio & Trading Platform We built Yield-Nexus as a real-time crypto portfolio and trading dashboard aggregating data across Binance and Bybit. Traders needed a unified view of spot holdings, futures positions, and PnL without switching between exchange consoles.
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Cover image for Concordium — Supply Chain &
Concordium — Supply Chain & Testnet Infrastructure We delivered two blockchain projects for Concordium: a supply chain track-and-trace system and a testnet faucet. Track-and-trace: - Built a CIS-3 NFT smart contract (Rust) for product tracking. - Added sponsored transactions so users don’t need to hold tokens. - Implemented an indexer to track all on-chain movements in real time. - Shipped a full frontend and Docker-based infrastructure. Testnet faucet: - Developed a Next.js faucet with Cloudflare Turnstile bot protection. - Added per-address daily limits and balance checks via the explorer API. - Provided complete documentation for deployment and maintenance. Outcome: - Both systems production-ready and actively used. - 92 combined commits, clean architecture, ready-to-reuse patterns. This case shows our ability to ship end-to-end blockchain solutions—smart contracts, infrastructure, and UX—in one go.
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