Shipped Talkak (a native macOS terminal workspace); building an internal RAG-evaluation tool. Open to senior backend & AI engineer roles — Toronto or remote.
Last updated · May 31, 2026
Backend engineer, 6 years building and operating data-heavy enterprise systems across global manufacturing, warehouse, and finance. The throughline is concurrency and transaction integrity: distributed locks that ended cross-server duplicate execution, a staging-table batch pattern that cut processing time 60%, 46 middleware endpoints consolidated into one RPC dispatcher across 8 plants. Now I apply the same fault-tolerance discipline — async workflows, retry/backoff, state-machine execution — to AI products: LLM pipelines, RAG, agent loops. Based in Toronto, open to senior backend or AI engineer roles.
The cockpit around your own Claude Code / Codex — a native AI work operating system that gates risky agent actions behind your approval, re-runs the commands behind a 'done' claim to catch false ones, and captures decisions into a searchable project-memory graph. Tauri + Rust, macOS.
Tauri 2 · Rust · React 19 · TypeScript · xterm.js · portable-pty
Turn any YouTube video into spaced-repetition English shadowing, plus daily drills for the grammar patterns, collocations, and prepositions that never come automatically. Java/Spring + Next.js, built solo.
Java 21 · Spring Boot 3.3 · PostgreSQL 16 · Next.js 16 · TypeScript · Gemini / Claude
A real-time 1v1 PvP game from the Korean schoolyard 기싸움 hand game — read the opponent, charge ki, strike on the right beat. Python (FastAPI) and a second Go runtime share one Redis-backed game state; Next.js 16 PWA, room-based PvP, 6 character ultimates, AI-generated sprites.
Python 3.11 · FastAPI · Go 1.23 · Next.js 16 · React 19 · PostgreSQL
A private, installable PWA for keeping the encouragement of the people who love you — voice, photo, a kind word, a short clip — and surfacing it on the hard days. One codebase: zero-account local to full production infra by env var alone.
Next.js 16 · React 19 · TypeScript · PostgreSQL · Drizzle · PWA
A high-throughput factory-floor pipeline had no staging environment that matched production, so every deploy validated only on local and dev hit prod untested. The differences those two hid surfaced as incidents.
I ran an unverified SELECT against production. It took a library cache lock and stopped equipment at an overseas site, and it took me 15-20 minutes to realize my own session was holding the lock.
We used an MDM tool to remotely lock a fleet of factory-floor handhelds so only approved apps would run. It was a setup task more than an incident — the only correction is that the lockdown should have been part of the standard provisioning step, and at the time it wasn't.
A save button in a data grid read from a hard-coded column index. When the column layout was reconfigured, it saved the wrong column.
A TLS certificate on the link between two systems expired without being renewed, and the integration went down in production. Nothing had been watching the expiry date.
Software engineering isn't one skill — it's ~18 separately-masterable domains across a few bands. Nobody masters all of them; the real shape is T-shaped. A map for orientation, not walls.
Jun 3, 2026
An ordered, immutable sequence you only append to and read by offset. The principle under Kafka, WAL, and event sourcing — they're instances, not the idea.
May 29, 2026
Mutual exclusion across processes and servers, not threads in one JVM. The principle under ShedLock, Redlock, and SELECT FOR UPDATE.
May 29, 2026
Applying an operation N times lands in the same state as applying it once. The principle that makes retries safe — and the truth behind 'exactly-once'.
May 29, 2026