open source
shipped
Audio Adjuster
Apache-2.0 · Swift
Per-app volume control for macOS: a menu-bar slider for every application
currently making noise, built directly on Core Audio process taps. No Dock
icon, no window — it lives in the menu bar and gets out of the way.
Ad-hoc signed, installable in one curl, with CI on every commit.
- core audio process taps
- macOS 14.2+ / Swift 6.3
- make app → signed bundle + checksum
founder
deprecated
StreamDeploy
Founder, infrastructure & full-stack · Sep 2025 – Mar 2026 · San Francisco
An over-the-air deployment platform for robotics and IoT — think Vercel,
but the target is a fleet of devices in the field. Infrastructure as code on
Pulumi and GCP, a FastAPI control plane, Pub/Sub for rollout orchestration,
BigQuery for telemetry, and a Go agent on the device itself. I ran pilots with
R&D labs and small businesses, rolling out and monitoring across very
different environments.
- pulumi / GCP / Cloudflare CDN
- fastapi control plane + Pub/Sub
- go agent on-device OTA
- bigquery fleet telemetry
Site ↗
containerized AI chatbot scaffolding used by Ollama and the U.S. Air Force
full stack dev
shipped
Hospitality DApp
Infrastructure & blockchain engineer · Mar – Jul 2023 · San Francisco
Infrastructure and frontend for an online hospitality booking DApp on Next.js,
Solidity and Cloudflare CDN. I defined and integrated the Ethereum smart
contracts behind its token-based transactions, and tuned the booking flow for
performance. The token’s market cap passed $46,000 as of Sep 2024.
- solidity smart contracts
- next.js + Cloudflare CDN
- token-based booking & payments
case study · Synopsys
production
Real-time infra monitoring
A relogger: it picks up logs already being written across the fleet,
re-emits them as structured metrics into InfluxDB, and surfaces them through
Grafana. Nothing upstream had to be rewritten to be observable — and
incident alert latency fell to roughly five minutes across three
product families.
- relogger logs → structured metrics
- influxdb + Grafana + Python
- hundreds of pipelines, one pane of glass
open source
shipped
sd-mqtt
MIT · Rust
A distributed MQTT broker — MQTT 3.1.1 and 5, clustering with replicated
queues, rules and connectors, and an admin interface, all in one binary. MIT
licensed throughout: no enterprise edition and no open-core line.
- durable sessions follow a client across nodes
- replicated queues survive a node going away
- one static binary, broker on :1883
open source
shipped
web3-login
published on npm · MIT
A drop-in React component for web3 wallet connection — the boring,
fiddly part of every DApp, packaged once and reused.
- @clement.chang.dev/web3-login
open source
shipped
secret-manager
Apache-2.0 · Python
A lightweight, distributed secret manager you run in your own cloud —
AWS, GCP, a VPS, Kubernetes, anywhere that runs a container. It brings its
own database and issues its own tokens, so there is nothing to register and
nothing external to connect.
- ghcr.io one stateless container
- secretmgr CLI under 10 MB, no runtime
- scales to N replicas, no state in process memory