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Achievement: Pair ExtraordinaireAchievement: QuickdrawAchievement: Pull Shark

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baltasarblanco/README.md

Baltasar Blanco

Backend developer. Rust · Python · Go. I contribute to three open source projects and build systems tooling to learn.

Baltasar Blanco

Rust · Python · Go

Open source

I send patches to three projects and keep going back to the same three. Usually the same kind of bug: a rule that's right in general and wrong at some boundary — scope, aliasing, an assumption that stops holding.

astral-sh/ruff — Python linter, Rust. When a fix is safe enough to apply unasked. Example: FURB101/FURB103 with a file descriptor. Merged

swc-project/swc — JS/TS compiler, Rust. Minifier and renamer. Example: top-level declarations only reachable through direct eval. Merged

coredns/coredns — DNS server, Go. Cache and file plugins. Example: resolving each additional-section target once. Credited in the v1.14.5 and v1.14.7 release notes. Merged

Open PRs

Mine

Jan–Apr 2026, before I moved my time upstream. Not maintained. Benchmarks in them are loopback, single machine.

Seven years in audio engineering before this.

Buenos Aires · LinkedIn · baltasarblanco.dev@gmail.com

Before software: seven years in professional audio engineering, mastering.

Buenos Aires, Argentina · LinkedIn · baltasarblanco.dev@gmail.com

Pinned Loading

  1. aegis-proxy aegis-proxy Public

    L4 TCP proxy in Rust · io_uring · thread‑per‑core · zero‑alloc hot‑path. +8.4k RPS · P99 <1ms.

    Rust

  2. bifrost-api bifrost-api Public

    ⚡ Enterprise B2B Transactional API. Built with FastAPI & PostgreSQL, featuring AI-powered intent extraction, robust concurrency control (pessimistic locks), and automated CI/CD to AWS.

    Python 1

  3. chronos_lsm chronos_lsm Public

    LSM‑tree KV store in Rust with WAL, bloom filters, compaction. Bench: ~15k reads/s · ~10.5k writes/s (single‑thread, localhost).

    Rust

  4. celer_mock celer_mock Public

    Zero‑copy CEP engine (memfd_create + SCM_RIGHTS). Debugging ring buffer – packet loss <0.001%. WIP.

    Makefile 2