Croma
Government data API for Claude and ChatGPT, co-founded with Tomás Calle in 2026. Official records from 8 countries through REST and MCP, used in production by Banco Finandina and Incomercio.
Product engineer in Bogotá, Colombia
I take products from zero to one, then keep them growing with data. Co-founder of Croma, founder of Kebo.
100k+
Kebo users in Latin America
10
hackathon and competition awards
8
years in data and software
8
countries in Croma's API
What it is – 01
What does a product engineer do?
A product engineer owns a product end to end: finds the problem worth solving, ships the first version fast, and keeps improving it with real user data.
Cristian Correa is a product engineer in Bogotá who has done this twice as a founder: Kebo grew to more than 100,000 users, and Croma runs in production at Banco Finandina and Incomercio.
Proof – 02
Products shipped
Kebo
Open-source AI agent for personal finance, founded in 2024. More than 100,000 users and 30,000 monthly active users in Latin America.
Rappi Ads
Data foundation for Rappi's ads business, including the keyword recommendation system and the analysis behind churn and revenue decisions.
Hackathons
10 awards since 2023, among them Platanus Hack 2025 (online winner, Scrapi) and the Vercel AI Gateway Hackathon (1st place, Chess Battle).
How I work – 03
From idea to product in five steps
1. Problem
Talk to the people who have it and write down the one job the product must do.
2. Prototype
A working version in days, not a deck, so users react to something real.
3. Ship
Put it in front of real users early, with analytics and error tracking from day one.
4. Measure
Read the data: activation, retention and where people drop off.
5. Iterate
Cut what nobody uses, double down on what works, and ship again every week.
Questions – 04
Questions
What does a product engineer do?
A product engineer owns a product end to end: finds the problem worth solving, ships the first version fast, and keeps improving it with real user data.
Product engineer, software engineer, full-stack or founding engineer: what's the difference?
A software engineer builds what is specified. A full-stack engineer covers frontend and backend. A product engineer also decides what to build from user data, and a founding engineer does all of that as one of a startup's first hires. Cristian Correa has worked as all four.
What has Cristian Correa shipped as a product engineer?
Croma, a government data API used in production by Banco Finandina and Incomercio; Kebo, an AI finance agent with more than 100,000 users; Rappi Ads data systems; and open-source tools like SQL4All, C3 and LaTeX0.
Does Cristian Correa work with US companies?
Bogotá runs on UTC-5 all year, the same clock as US Eastern in winter and US Central in summer, so a full workday overlaps. He works in English and Spanish; write to cristian.correa.cs@gmail.com.
Which stack does he use?
TypeScript, Next.js and React on the web, Expo for mobile, Postgres and Supabase for data, Python and SQL for analytics, and the Vercel AI SDK with MCP for AI features.