code
Fixed at the source
When a library breaks in production, I fix it upstream.
@@ production.ts @@- // TODO: work around the bug- patchLocally(output)+ // fixed upstream, for everyone+ upgrade(library)
Contributions merged into
01 · at any level
From one line of code
to the company around it.
systems
Products, end to end
Led Iberia's architects and tech leads, tech lead at TOUS and EY, and now building the whole of Refine.
agents
Many agents, one direction
I orchestrate fleets of AI agents working in parallel, from research to review to shipping, and train teams to work the same way.
orchestrator5 agents · in parallel
- researchmap the problem spacedone
- backendfix memory fragmentationrunning
- frontendredesign the upload flowrunning
- reviewverify every findingrunning
- docsupdate the runbookdone
teams
People who grow
Career paths at Iberia, TDD training at Codurance, and hiring and mentoring on LLMs and agent development at Refine.
science
Rigour, at scale
Refine helps researchers check their papers before they publish.
Used by the American Economic Association and the Econometric Society.
02 · open source
Leaving the code better
than I found it.
- 37merged pull requests
- 14projects
- 2019first contribution
MicrosoftAzure/azure-functions-durable-python1 merged2026
PostHogPostHog/posthog-js1 merged2026
Pulumipulumi/pulumi-azure-native1 merged2026
Sysdigsysdiglabs/promcat-frontend, falcosecurity-retire/cloud-native-security-hub-frontend3 merged2019–2020
pandocjgm/pandoc13 merged2026
- Xlsx reader: read charts
- Pptx reader: skip slide number placeholders
- Pptx reader: read inherited bullets, numbering and nested lists
- Pptx reader: read charts as tables
- Pptx reader: read speaker notes
- Xlsx reader: read merged cells as spans
- Pptx reader: read merged table cells as spans
- Pptx reader: mark hidden slides
- Xlsx reader: look up a cell's font through its cell format
- Xlsx reader: read inline strings, and rich text as written
- Xlsx reader: resolve package-absolute relationship targets
- Pptx reader: read the shapes inside group shapes
- Pptx reader: don't add spaces between text runs
And more
Paraglide JSopral/paraglide-js3 merged2026
Hey APIhey-api/hey-api1 merged2025
Home Assistant MyHOMEmichnovka/HomeAssistant-MyHOME1 merged2025
Gruntgruntjs/grunt-contrib-uglify2 merged2021–2022
Directusdirectus-labs/8-to-9-migration-tool, directus/directus, directus/v8-archive5 merged2019–2022
VeeValidatelogaretm/vee-validate1 merged2021
axios-extensionskuitos/axios-extensions1 merged2021
Nuxtnuxt-community/pwa-module, nuxt-modules/device3 merged2019–2020
CimpressCimpress-MCP/postal-codes-js1 merged2020
03 · talks, teaching and writing
Sharing what I learn.
I've talked at conferences and community events, among them:
And given workshops for teams at:
Some examples of posts and workshops