Manuel Sepúlveda
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Manuel Sepúlveda

Software engineer · backend, applied cryptography and security

I build backends and smart contracts where signatures, privacy and data provenance matter.

Projects

  1. Nodus

    1st place, University Track, at Find Your Way Hackathon. On testnet, a cycle of 20 businesses settled in a single transaction with 20 passkey signatures.

    2026done

  2. Pulso Fiscal

    MVP with Senate data since 2021: every datum keeps its source URL, capture date and SHA-256 hash. Paused since June 2026.

    2026paused

  3. Pulso Urbano

    Working prototype in 54 hours, team of 4: a Santiago map with communes, trips between communes and noise, plus an impact comparator by transport mode.

    2026done

  4. Password manager

    Saved passwords reach the server only encrypted, and sharing one never shows the server its text. Known limitations are documented.

    2024done

In progress: Salud Hub brings together data from Garmin, Hevy, Zepp Life and food logs, with an AI coach on top that reads them and reaches out first. It runs locally; I’ll publish the repo when it’s ready.

All projects

Research

Master’s thesis · CLCERT, Universidad de Chile

Secure publication of aggregate statistics in verifiable electronic voting

My thesis designs a cryptographic mechanism to publish statistics of a verifiable electronic vote without compromising ballot secrecy.

Submitted and under review. Defense expected between December 2026 and February 2027.

More about the research

Contact

Email
Location
Santiago, Chile America/Santiago

I’m looking for work as a backend, full-stack or security engineer in Santiago, remote or hybrid, preferably on teams that work in English.

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