Andrea Ritondale · andrea0x.eth
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Principal Engineer · IT Architect · AI Builder

I design, build and run systems in production.

AI engineering, multi-chain DeFi, B2B pharma SaaS and the Italian public sector. I write the spec, design the architecture, ship the deploy and keep the system running afterwards.

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100% remote · Italy, CET · hello@andrea0x.me

Andrea Ritondale
Active projects andrea0x.eth
— Rome
  • HaeliasSolo CTO · in production
    5.5M+ docs
  • Mandate.FinanceCo-founder · pre-launch
    11 workspaces
  • ArtCertify · MiC PNRRTechnical-functional lead
    4 data products
  • FactorFounding engineer · DeFi vaults
    68 MCP tools
  • Gruppo ActivaBlockchain Product Owner
    since 2023
  • DeckAgentBuilder · Cursor from your phone
    iOS beta
  • Raspberry ClawSelf-hosted AI agent
    on-prem
  • Artence PasskeySeedless Algorand wallet
    WebAuthn
8 active projects
  • 5.5M+MongoDB documents in productionLive Haelias cluster, multi-tenant
  • 70%Index footprint reduction1.69 GB → 369 MB, €1,260/yr upgrade avoided
  • 11Workspaces in 5 weeksMandate.Finance · 1,300+ commits
  • 5+Domains in parallelAI · DeFi · SaaS · public sector · heritage

01 · Work

Five systems, five domains, one technical owner.

Each project below has a case study with the problem, architecture, decisions and numbers.

01 / 05

B2B SaaS · Pharma · Production

Haelias

Digital procurement for Italian pharmacies, live with enterprise clients. I'm the only CTO: Express backend, React 19 UI, Rust worker, DigitalOcean infrastructure.

  • 5.5M+documents
  • 143endpoints
  • −70%on-disk indexes
Read the case study
Haelias screenshot
02 / 05

DeFi · AI agents · Multi-chain

Mandate.Finance

DeFi platform run by AI agents: one LLM loop over 7 job types, a Python MCP gateway, a signing-service with encrypted per-agent keys. Contracts at the same CREATE2 address on three chains.

  • 11workspaces in 5 weeks
  • 1,300+commits
  • 3chains
Read the case study
Mandate.Finance screenshot
03 / 05

Public sector · Cultural heritage · Blockchain

MiC PNRR · ArtCertify

Italian Ministry of Culture tender (Ecomic Lotto 3): four blockchain Data Products and soulbound certificates for cultural assets, with SPID identity and hybrid MINIO + IPFS storage.

  • 4data products
  • 6pilot use cases
  • 2chains (Algorand + Base)
Read the case study
ArtCertify screenshot
04 / 05

DeFi · Vault infrastructure · MCP

Factor

ERC-4626 vaults on Arbitrum, Base and Ethereum, two production UIs and an AI-native layer: an MCP server with 68 tools and a Vault-as-a-Service paid in USDC via x402.

  • ~140kLOC
  • 468 + 253commits
  • 68MCP tools
Read the case study
Factor Studio screenshot
05 / 05

AI tooling · Local-first · Mobile

DeckAgent

A remote for Cursor on your phone: follow agents, read plans and send the next prompt while the code stays on your computer. Daemon, PWA, extension, iOS app and Watch.

  • 5surfaces
  • 100%local
  • QRpairing
Read the case study
DeckAgent screenshot

02 · How I work

From a 30-minute call to a system in production.

Fractional CTO, technical architect or founding engineer. The path is the same.

  1. 30 min

    Discovery call

    Context, goals and constraints. I learn what already exists and what breaks.

  2. in writing

    Scope and rate

    A written proposal with deliverables, timeline and rate range.

  3. weekly

    Engagement

    Kickoff, decision log, weekly checkpoints and a documented handoff at the end.

03 · Domains

Generalist by design, specialist where it matters.

Six areas where I have systems in production or shipped deliverables, each with a number you can check.

See services

4 clients · 3 institutions · 39 tools

Trusted by

Selected clients, institutions, and tools across pharma, public sector and Web3.

Enterprise Clients04

Public Sector & Institutions03

Built With39

Cloud04

AI06

Web311

Data05

App stack07

DevOps & tools06

04 · Who it's for

Where you come from decides where to start.

05 · Contact

What's the next move?

Write it in one line and pick a slot: I'll find it in the call notes.

Telegram Email

hello@andrea0x.me · @andrea0x_eth