Thais Reis · Full-stack protocol engineer: Rust, Soroban, TypeScript

I · From idea to production

I write the contract in Rust, the API behind it, the interface on top and the pipeline that puts it in production.

CTO at Plina Finance · blockchain engineer at Yalla · founder of Karn

Rio de Janeiro, Brazil

Projects

Yalla

Full stack, solo: everything but mobile

A B2B ticketing and event platform running in production in Brazil, with tickets issued on-chain and a transfer policy the producer cannot rewrite after the fact.

Proof: real events since May 2026

Rust · Soroban · Stellar · TypeScript

Karn

Founder & sole engineer

An open-source governance protocol on Stellar, paired with a program to expand women's participation in tech across Latin America.

Proof: @karn_lat/protocol-sdk published on npm

Rust · Soroban · Stellar · TypeScript

Plina Finance

CTO

On-chain infrastructure for the institutional tokenization of credit rights, built on Stellar.

Proof: Stellar instaward, via Stellar 37°

Stellar · Soroban · Rust · TypeScript

Record 2026

Jul 30SelectedStellar Builder Summit 2026, São Paulo
JunGrantStellar Instaward, via Stellar 37°
May 16ProductionPrelúdio
MayRoleCTO na Plina Finance
Mar 29RoleYalla
Mar 15DeployMomentNFT
MarPrizeMonad Blitz Rio de Janeiro 2026
Feb 9Release@karn_lat/protocol-sdk 0.1.0-alpha.5
Feb 7ReleaseKarn Protocol
JanRoleKarn

Record 2025

Oct 30PrizeHackathon Nola: God Level, Code Your Futur
OctRoleNola
Aug 9PrizeMorro Makers

Full log, since 2023

II · The practice

Built to last.

I write the tests, the runbooks and the docs alongside the code, not afterwards. What I deliver has to run without me.

Languages: TypeScript · Rust · Python · SQL
Web3: Stellar · Soroban
Product: React · Next.js · Node.js · PostgreSQL
Delivery: Docker · AWS ECS · GitHub Actions · Prometheus

Now

Yalla in production in Brazil.

Asset issuance on Stellar.

The Karn SDK and contracts.

Full story Every project, in full