I'm Pablo, a software engineer in Madrid.
I build multi-agent systems at Jupiter (opens in new tab), mostly the evaluation harnesses that tell us when an agent got worse. Before that I wrote no-std Rust for liquid staking at Sanctum, Solana observability tooling at Ironforge, and a lot of Rails and React.
I keep notes as I learn, mostly so I can find the answer again. I also take on one consulting project at a time.
Now · October 2026
- Evaluation harnesses for multi-agent systems at Jupiter.
- Writing up what I learned shipping no-std Rust at Sanctum.
- Taking on one consulting engagement at a time.
Where I'd start reading
- Solana SVM and TPU
How a transaction actually travels through a validator. I reread this before debugging landing rates.
- Transaction Fee Mechanisms - Notes
Fee markets across chains, written while trying to explain priority fees to myself.
- The Two Reacts
The clearest mental model I've found for server and client components.
Where I've worked
- JupiterAI Engineer2026
- Sanctum LabsSenior Software Engineer2025
- IronforgeSenior Software Engineer2024
- KomonSenior Software Engineer2022
Things I've made
- The simulation that said no · Solana
- Averages you can't add · Data
- A prompt change is a deploy · AI