New fixed-scope service AI Opportunity Audit

Independent AI & Full-Stack Product Engineer

I build AI systems teams can run.

I work directly with small teams to turn unclear workflows and product risks into software that ships. My public work spans campus platforms, Ethereum contracts, Bitcoin products, and AI systems.

How I can help

Bring me the decision that is blocking the work.

I define the risk, choose the smallest sound path, and stay close enough to the code to ship it.

Selected work

Work you can inspect.

Three projects across AI visibility research, AI product engineering, and Ethereum delivery. The decisions, results, and evidence are documented.

See all case studies
Search visibility · Portugal · 2026
Illustration of the global 42 peer-learning network used in the 42 Portugal visibility assessment

Search visibility research, question analysis, and source review

42 Portugal Search Visibility

I assessed how 42 Portugal appears in Portuguese search and AI answers: which candidate questions surface it, which sources models rely on, and where visibility drops.

42 is easy to find when people ask about free coding schools or campuses. It appears less often in questions about preparation, learning without teachers, and employer recognition.
AI product · Publishing · 2026
Agentic Brief visual showing reader identity and interests routed through an agent workflow into a personalized technical brief

Publisher and builder

Agentic Brief

I built an AI publishing product that combines the topics a reader chooses with the LinkedIn profile details they authorize, so each brief can follow their actual interests.

A signup that knows what each reader wants and verifies who is asking, instead of collecting anonymous email addresses.
Ethereum · Emergency smart contract delivery · April 2022
NOT NASA number 1 hand-drawn bear character being lifted into a flying saucer on an orange background

Smart contract and mint engineer

Not NASA

Founder Domingo Mattle called with 24 hours left before mint. I delivered the ERC-721 contract, allowlist, sale controls, airdrops, metadata, and three-way payout path in time for launch.

A launch-critical contract delivered in 24 hours; 1,093 tokens minted and 88.23 ETH recorded in gross paid-mint receipts.

Client feedback

What it was like to work together.

Twelve rated reviews. Five written recommendations. Original sources are linked where they exist.

5.0
12
Scored reviews
5
Written recommendations
Read all client reviews

Someone I recommend

Raphael Sequoya Baum is looking for his next engineering role.

I worked with Raphael at 42 Lisboa and later on blockchain products. He is a pragmatic full-stack engineer who has built with Vue, Node, Postgres, and Solidity—and someone I am comfortable putting forward personally.

Common questions

The questions I hear most often.

Straight answers about the work, my background, and when an engagement makes sense.

What do I build?

I build AI workflows, web products, and the technical foundations behind them. I can take a messy problem from the first decision to working software—and leave the team with a system it can run.

Where am I based?

I am based in Ericeira, in the Lisboa region of Portugal. I work with teams across Europe and remotely.

What kind of project is the best fit?

A real product, workflow, or technical decision with an accountable owner. We can start small, but someone must be able to make product decisions and give access to the evidence.

How do I approach an AI system?

I start with the work: who owns it, what information moves, where decisions fail, and what a mistake costs. AI goes only where it can be tested. Permissions, review, logs, and recovery are part of the build.

Can I work as a hands-on technical lead?

Yes. I can set architecture and delivery direction while staying close to the critical code, product behaviour, and release path.

A polished brief can wait.

Tell me what is stuck and what it is costing you.

Discuss the project