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hackathons

Rapid product judgment under constraints.

Hackathons are not the main story. They are proof that I can find a wedge, scope a surface, and ship with limited time.

Rapid product judgment

Faro

A civic data product for tracking public money.

Role
Turned a messy public-data problem into a searchable product surface under hackathon pressure.
Outcome
Users could follow records, vendors, geography, and source trails in one flow.
Evidence
Winner announcement plus public Hack@LATAM material.
Context
Public spending data lives across portals and files.
Built
Search, maps, source records, vendor links, and exports.
Stack
Data normalization, maps, searchable records, source attribution.
Proof
Announced as the transparency track winner.
Organized by
Indies.LA / AI PlayGrounds / The 502 Project / Nucleo Lab / We Solve

Customer discovery

Vueltito

Recurring micro-donations for NGOs.

Role
Connected NGO needs, donor behavior, and ecommerce mechanics into a repeatable donation flow.
Outcome
The concept made repeat giving easier to understand and pitch.
Evidence
Winner posts and organizer/team public references.
Context
NGOs need repeat donations without constant campaigns.
Built
A round-up donation flow for everyday purchases.
Stack
Donor research, NGO interviews, ecommerce plugin concept, donation UX.
Proof
Winner at the Paisanos NGO hackathon.
Organized by
Paisanos.io / Crecimiento / Querido Lunes / deRecruiters / Coderhouse / Vercel
Team
Franco Ferreira / Ignacio Estevo / Juan Martin Giorgio / Mauro Proto Cassina

Agent workflow design

yieldOS

A safety layer for coding agents.

Role
Designed review gates and evidence loops around coding-agent behavior.
Outcome
The product framed agent work as controllable operations instead of blind automation.
Evidence
Public Platanus page and repository.
Context
Agents can change code faster than teams can review it.
Built
Rules, hooks, command gates, and reviewable evidence.
Stack
Claude Code hooks, Git hooks, policy checks, audit commands.
Proof
Public Platanus page and GitHub repo.
Organized by
Platanus Hack 26 Buenos Aires / Platanus / Anthropic / ElevenLabs / Profound / Vercel
Team
Ignacio Estevo / Franco Ferreira / Sebastian Buffo Sempe / Mauro Proto Cassina