20+ years shipping in payments
Now building on Solana

I write Rust and Anchor programs and maintain SolRengine — 8 open-source gems, 20k+ downloads. Documenting the whole journey and contributing to open source.

See what I'm building GitHub

open to Solana roles — payments, protocol, or DevEx

Currently building

SolRengine

Modular Rails framework for building Solana dApps. Wallet auth, RPC client, token management, and real-time updates out of the box.

Ruby on Rails Solana

Solana Bytes

Interactive hex visualizer for Solana account data. Color-coded byte dumps with a Byte Challenge game to test your grasp of Solana data structures.

Solana Hex Visualizer Game

Proof of work

Now

Rust · Anchor · Solana program security — Rektoff Security Bootcamp, backed by the Solana Foundation.

Building

SolRengine — 8 open-source gems for building Solana dApps with Rails. 20k+ downloads, MIT licensed, 8 showcase apps.

Contributing

Early open-source contributions in the Solana ecosystem · Superteam member.

Before

20 years of Ruby on Rails in payments and fintech · React / TypeScript.

Writing

Lamport - From a Solana Workshop to a Neo-Bank Demo on Rails Jun 2026 A Frontend for the Dutch Auction - Dropping the Legacy Solana Stack Feb 2026 A Frontend for the Piggy Bank - Interacting with Solana from the Browser Feb 2026

All posts →

About me

Jose

Hey, I'm Jose. I've been building web applications for 20 years, most of them with Ruby on Rails.

Right now I'm pivoting into Solana and blockchain development, writing Anchor programs, and documenting everything I learn along the way.

I'm also building SolRengine, a modular Rails framework for Solana dApps.

Based in Bangkok.

Get in touch

Open to remote Solana or Rails positions.
Based in Bangkok.