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Juani De los Santos

Juani De los Santos

Software Engineer

I turn complex problems into simple, scalable software with Next.js, NestJS and AWS. My industrial engineering background shapes how I work: I break the problem down and ship the simplest solution that works.

NowFullStack at GeoActio, building EstacionAR at night.

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Experience

  • FullStack Engineer · GeoActio2025 — NowPublic transport ticketing for Spain. Multi-brand theming and end-to-end purchase flows with Next.js.
  • AI Lead Engineer · Crombie2025Led the Center of Excellence designing AI agents and workflows. Vercel AI SDK, AWS Bedrock, Langchain.
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Beyond code

When I'm not coding, I train. This year I set out to run the Buenos Aires Half Marathon, so my weeks are split between the gym and increasingly long runs.

Longest run: 18 km — 85% of the way to 21K

AugNovFebMaykm / week

90 km in the last 4 weeks · 9 runs · 371 km this year

Contact

Interested in working together, or just want to talk frontend and AI?

Get in touch