Systems software · Security · Infrastructure

Jake Abendroth

I build dependable software at the edges of operating systems, security, and production infrastructure.

Currently working in Rust on secure filesystem operations at uutils/coreutils.

San Jose, California · Graduating May 2027

Selected work

A few things I’ve been building and fixing.

01

Open source · Systems security

uutils/coreutils

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Fixed a TOCTOU symlink race in install found in a Canonical-funded Zellic audit, and extended uucore's fd-anchored traversal from Linux to all Unix targets. 30+ merged pull requests in the Rust coreutils that ship in Ubuntu 26.04.

CVE-2026-35356 · CVE-2026-35362

02

Rust · Developer tools for AI agents

simgit

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A published Rust CLI that gives each agent its own real Git worktree, cloned copy-on-write from a shared baseline with APFS clonefile, Linux reflinks, or fuse-overlayfs, with a Claude Code plugin.

~10 MiB per vscode worktree instead of 567 MiB

03

Rust · Confidential computing

QuackXide

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Verifies Intel TDX attestation tokens from Google Confidential Space so a dataset's key is released only to an attested workload, with fuzz targets and fail-closed data connectors.

Senior team project

04

Co-founder & CTO · Production backend

Finlingo

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Led engineering for a fintech startup with about 200 users and $6.2M+ in connected assets: Plaid ingestion, a two-stage LLM pipeline, field-level encryption, and verified webhooks.

TypeScript · PostgreSQL · Azure Container Apps

How I work

Careful systems are built from careful decisions.

Make unsafe operations explicit

Secure primitives should preserve the behavior people depend on.

Treat portability as a constraint

A fix is more useful when it survives the boundaries between operating systems.

Measure what the system costs

Performance, storage, and operational tradeoffs deserve concrete numbers.

Contact

Interested in building something dependable?

I’m interested in systems, security, and infrastructure work where correctness matters.