Product Engineer, full-stack, from the customer's need to production

Available now. Permanent role or freelance contract. Remote, hybrid in the Paris area, or relocation anywhere in the world.

I understand your real estate business and build your AI agent.

Six roles, all held on my own SaaS, sogenio.com:

Backendthe Go API, payments and integrations
Frontendthe web dashboard for teams, in React
Product designthe screens and user journeys, designed with customers
Mobilethe iOS and Android app, in Flutter
AI agentsfour or five per client: WhatsApp, Instagram, web chat, business agents
Salessix small businesses won directly, from discovery to signature

What I've built

2023 – 2026
sogenio.com
AI Agent DeveloperMedellín, Colombia
A complete SaaS for small businesses in Latin America.
Go, React, Flutter, WhatsApp Business API (official Meta Technology Provider), Stripe, Cal.com, Cloudbeds.
2021 – 2024
42crunch.com
Backend engineer, API securityDublin, Ireland
Engines that find security flaws in an API from its OpenAPI description. In Go, in an English-speaking team.
2020 – 2021
Go contracts
treezor.com, ovhcloud.com, sharespot.pt, Storewise
SEPA payments for a white-label bank, billing for a cloud provider, an IoT network, decentralised storage.

The business first
I listen to the people who will run the product before writing a line, and I design it with them.
End to end, no hand-offs
Backend, web, mobile, integrations, shipping: nothing gets lost between two teams.
What's live gets measured
Real usage and real cost, not just what was shipped: the cost of a task done, not of a feature.
Tested before every change
Scenarios drawn from real failures, replayed before every release.

2011 – 2017Six years in construction: electrical, low-voltage, renovation. Self-employed from 2013 to 2017.
2017 – 2020École 42, Paris.
since 2019Go, my main language.
2023 – 2026Three years in Medellín, Colombia.

I code with Claude Code every day, review included: four agents read every change, each from its own angle.

Native French, English and Spanish: three years lived in Colombia.

For a role or a contract where someone has to understand a business and turn it into a product that runs: let's talk.