Damien Heloïse

I build web, blockchain and AI products.

Fullstack freelance. Digital products and on-chain infrastructure.

See the Labs

Track record

  1. Full-time · fullstack developer

    Building business applications and shipping them to production, inside a startup and alongside a team of developers.

    CMS, modern front-end, APIs, back-end and databases with React, Next.js and Java, following collaborative practices: Bitbucket, Git, Jira, Figma, CI/CD and Docker deployments.

  2. Freelance · web3 & blockchain

    Design and development of bespoke web3 solutions: decentralised applications, smart contract integrations, wallets and blockchain APIs.

    Work spanning technical architecture, front-end and back-end development, on-chain interactions and the move to production.

  3. CTO · tokenization startup

    Ownership of both the strategy and the technical execution of an API solution for tokenizing real-estate assets, acquired in 2025 by Fraktion.

    Experience at the crossroads of business stakes, regulatory constraints, product and engineering, in a fast-moving startup environment.

My services

Fullstack

Complete web applications, from database to interface.

Blockchain

Smart contracts, on-chain integrations and web3 infrastructure.

AI

Agents, RAG and LLM integrations in production.

Labs

Technical demos you can actually play with.

Certification quiz

Pass it and mint a non-transferable NFT badge, signed with EIP-712.

Portfolio agent

A multi-protocol AI agent: A2A, MCP, x402 payments and ERC-8004 identity.

3D Configurator

A real-time product configurator: PBR materials, showroom reflections, colour changing on the fly.

In a few words

I'm a freelance fullstack developer specializing in web3, artificial intelligence and 3D web. Before that, I was CTO of a real-estate tokenization startup, where I led the technical strategy through to the company's acquisition by Fraktion in 2025.

That experience gave me a full view of the product cycle: technical scoping, regulatory constraints, execution and shipping to production, with responsibility for a team and a roadmap. I also delivered two freelance web3 engagements before returning to independent work full-time.

Today I work on projects that combine modern web development (React, Next.js), blockchain integrations (smart contracts, wallets, on-chain infrastructure) and artificial intelligence (agents, RAG, production LLM integrations) with the same rigor I brought to the projects I led as CTO.

Let's talk about your project

A web, blockchain or AI need? Thirty minutes is enough to find out whether I can help. Whether it's a full build, extra hands on an existing stack, or a technical audit, I take the time to understand the context before proposing anything.

  1. 1Scoping call, 30 minutes, no obligation.
  2. 2Proposal and price range within 48h.
  3. 3Fast start, solo or embedded in your team.

How an engagement works

€500–800 / day, depending on scope and engagement length.

One-off or recurring missions, typically a few weeks to several months.

A first 30-minute call, no strings attached, to scope the need and see if I can help.