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Born to dream, made to work
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Born to dream, made to work

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fcarvajalbrown/README.md

Felipe Carvajal Brown

Software Engineer · MSc in Numerical Simulations · Santiago, Chile (open to remote)

Born to dream, made to work.

I write code in Rust, Python and TypeScript, and I got to software the slow way, from construction engineering in Chillán and a camera on my shoulder in Ñuble to a master's in numerical simulations. In my own time, with my own hands, I build tools for the public good and give them away for free, not because I have time or money to spare, but out of conviction. Why? Because good software is not a luxury good, it is infrastructure, and infrastructure belongs to people.

What I do

  • Scientific and numerical computing. Simulation engines, signal processing, performance work where the math has to be right and the runtime has to be small.
  • Full-stack web. TypeScript front to back when the job needs a face people can actually use.
  • Civic tech. Software that holds the State to its own standards, like security and compliance tools for Chilean municipalities.

Stack: Rust · Python · TypeScript · Polars · numerical simulation · scientific computing · full-stack

Things I'm proud of

  • MaskOps: high-speed PII masking as a Polars plugin, with the heavy lifting in Rust. Privacy that does not cost you your throughput.
  • MuniANCI: a cybersecurity compliance scanner, written in Rust, that audits Chilean public agencies against Law 21.663. The law set the bar. This checks who clears it.
  • Keel: a deterministic, open-source Python engine that mixes finished stems and masters them to an exact LUFS target. Same input, same master, every time.

Open to work

I'm looking for engineering roles, remote-friendly, where the work means something. If you build things that serve people, let's talk.

The great avenues are not going to open on their own. We'll program them.

Pinned Loading

  1. Segovia Segovia Public

    A fast, memory-bounded Rust engine for electrophysiology signal processing — Neuropixels-scale, callable from Python.

    Rust

  2. MaskOps MaskOps Public

    High-speed PII masking as a Polars plugin — powered by Rust

    Python 16

  3. Keel Keel Public

    Automatic mixing and mastering for finished stems. A deterministic, open-source Python engine that loudness-balances stems into a stereo mix and masters it to an exact LUFS target with a true-peak …

    Python

  4. Nano-FII Nano-FII Public

    Minimalist Python-to-Zig FFI bridge. 79ns call overhead via comptime trampolines — 4x faster than ctypes

    Zig

  5. Auth4Free Auth4Free Public

    A secure, modular authentication library for Rust applications. Features password validation, JWT tokens, bcrypt hashing, and comprehensive security tools. Perfect for developers building secure we…

    Rust

  6. SentinelNode SentinelNode Public

    Self-hosted security dashboard — scans directories for leaked secrets and audits HTTP security headers. Powered by Rust and Node.js, deployable with Docker Compose.

    TypeScript