Bench‑first systems builder: panic‑free APIs, structured concurrency, reproducible benches, and feature‑flagged rollouts. I use AI (Augment/Windsurf/Copilot) for scaffolding; correctness is enforced with tests/benches and CI perf gates.
Open to: Senior Systems/Performance Engineer (Rust), Agent/Observability Engineer (Rust), Developer Tooling (Rust) • Location: Remote or hybrid (SF Bay Area)
- TTAPI (private code) — architecture one‑pager, demo script, and engineering practices
• One‑pager → https://githubrobbi.github.io/rust-systems-portfolio/ttapi-one-pager.html
• Demo → https://githubrobbi.github.io/rust-systems-portfolio/demo/ttapi-demo-script.html - Write‑ups
• Panic‑Free Rust APIs → https://githubrobbi.github.io/rust-systems-portfolio/posts/panic-free-rust-apis.html
• Bench‑First Rust Development → https://githubrobbi.github.io/rust-systems-portfolio/posts/bench-first-rust-development.html
TTAPI code is private; docs and demo use synthetic data.
- Business Feed dismissal → reappearance (ETS‑P → ETS → outbox), flag‑gated rollout
- Shopify fees ingestion & payout enrichment (multi‑env deploys)
- QBO v4 transaction list aggregates/parity
- High‑throughput indexing/diff and content‑addressed storage
- Telemetry/endpoint agents with backpressure and bounded memory
- Developer tooling: logging/tracing, perf harnesses, CI perf gates
- Bench‑first (prove p50/p95 before shipping)
- Panic‑free public paths (forbid unwrap/expect/panic)
- Small PRs, fast reviews, flag‑gated rollouts
Rust Tokio Polars tracing Criterion proptest cargo-deny cargo-dist Python



