Simulation accuracy
2026Assessed and improved the accuracy of physical simulation models.
My portfolio includes selected freelance and full-time work alongside open-source projects I've either created or contributed to extensively. Most of my professional work is covered by non-disclosure agreements and can therefore only be shared in redacted form, if at all.
Selected work
Engineering alignment & delivery
2025Aligned engineering teams around product-market fit and delivery as Interim Head of Engineering. Introduced asynchronous standups and processes that encouraged engineers to raise concerns.
SIMD-accelerated finite-field arithmetic
2025Added optional SIMD acceleration to finite-field arithmetic for erasure coding, improving performance by ~5–30% on supported hardware.
Security audit remediation
2025Triaged and verified 200+ high- and medium-severity audit findings. Secured agreement on priorities and executed the remediation plan.
Reproducible ML & distributed storage
2022-2025Shipped an injectable CUDA library with reproducible PyTorch kernels and built erasure-coded streaming storage for hundreds of gigabytes. Led engineering for decentralized training and helped grow the team from 3 to 25.
Startup scaling
2022Supported startup scaling and the search for product-market fit.
Secure vehicle access & zero-copy communication
2018-2020Designed and deployed a DSL-based code generator for zero-copy inter-chip communication, integrated with the core event dispatcher. Shipped in 50,000+ vehicles with one known edge-case defect.
Connected-device firmware & protocols
2017-2018Assessed firmware and embedded operating systems for low-power devices. Designed and demonstrated an MQTT-based OTA update system for intermittently connected devices.
Automotive emergency calls & embedded ML
2015-2017Developed and adapted an automotive emergency-call system, completed certification, and shipped it in 100,000+ vehicles.
Open source
vmrunner
2026Built vmrunner, a libkrun-based Rust harness for privileged or destructive integration tests in disposable Linux VMs on Linux and macOS hosts. Supports multi-VM tests, fresh filesystem overlays, cached guest setup, and unprivileged execution on Linux.
butterpot
2026-presentBuilt butterpot, a multi-user client/server backup system in Rust using Btrfs snapshots and incremental send/receive transfers over SSH, with snapshot lifecycle management, backup-space management, and privilege separation.
sccache
2021-presentCo-maintained sccache, a distributed compilation cache with cloud-storage support that speeds up Rust builds locally and in CI.
cargo-spellcheck
2021-presentCreated and maintain cargo-spellcheck, a spellchecker for Rust documentation comments and CommonMark documents that catches typos before code review.