Field service engineer who builds the tools.
Four years keeping production critical semiconductor equipment running in a live fab, now building the tools I wanted on the floor and checking them against the published literature instead of against a good feeling. Almost nobody in power service writes software, and almost nobody who writes software has racked a breaker. I work in that overlap.
Open tools for data center power service: switchgear, protective relays, ATS, metering, commissioning.
The rule: nothing ships until it reproduces a published worked example and the number matches the book.
| Live | What it proves |
|---|---|
| Power chain one line explorer | Five published UPS configurations, utility to rack. Click any component to take it out of service and watch what goes dark. Every assertion quotes the source paper's own words. It refuses to print a tier, on purpose: a tier is awarded against a standard I have not read, and a confident wrong answer is exactly what this repo exists to avoid. |
Nine more in the same discipline: coordination curves, ATS sequence, relay bench, Modbus metering, ladder logic, switching orders and LOTO planning, NETA test plans, commissioning scripts.
That gate is not decoration, and it cost me things. Mutation testing my own test suite (breaking the
code on purpose to prove the tests could actually fail) showed one of my features was dead code, so I
cut it. The same pass caught a real bug: a bus tie wired one way, so one side could never back feed the
other. ./tools/gate.sh re-proves all of it in one command.
Four years of field service on production critical semiconductor equipment at Applied Materials. Better than 95% uptime, 15 to 25% downtime reduction, average service response under two hours. PVD, CVD, CMP and FSS certified. Trained junior techs.
- Safety. LOTO trained and recertified every six months across those four years, in a live production fab. NFPA 70E training, ongoing, through a U.S. DOL registered electrical apprenticeship.
- Power gear. Hands on across the chain: 480V+ switchgear, MV gear and protective relays, ATS, UPS, generators, and NETA style acceptance testing. Acquired one install at a time.
- Controls and comms. Migrated tool host communications off legacy SECS-I serial onto HSMS over TCP/IP, across many tools, each one bringing its own legacy quirks. Chased SECS/GEM failures that were corrupting tool behavior analytics down to the board. RS-232, RS-485 and Modbus TCP across tool and facilities systems: vacuum, thermal, gas, RF, and plant equipment. Proprietary PLC configuration on tool specific control software. Install level networking: bringing every new tool online with remote engineering and IT.
- Before the fab, two years in microelectronics prototype development. Debugged and characterized custom electronics at board and component level: probes, scope, function generator, LCR meter, microscope. Built custom data acquisition fixtures to pull current, voltage, RF and accelerometer data off a board, and turned the results into fingerprints that tell a hardware fault apart from a software configuration fault. I brought that lens into the fab, which is why a tool that would not talk got its comm board characterized instead of swapped.
- The method that actually travels. A problem is a story of the device's state, and every deviation from norm has a hard reason backed up by data. On equipment nobody memorizes, you derive it from the documentation, you engage the experts who know it, and you verify before you trust it. That is what I was paid for, and it is what the toolbox above is made of.
A fab runs 24/7 and production critical, on the same discipline a data center floor runs on.
Edge AI Portfolio · Live demos, no sign in
Verifiable AI tools for nonprofits, on the same instinct as the toolbox: the model observes, and deterministic code you can audit makes the decision.
| Project | What it proves |
|---|---|
| GrantMatch | Reads a funder's RFP into a checklist of every requirement, then refuses to mark a draft compliant unless it can quote your own words back. Catches the model fabricating coverage, live. |
| ColdWatch | A roughly $21 edge sensor that predicts a food bank fridge failure hours early, ignores door openings so the alarm stays trusted, and alerts fully offline. Zero AI at runtime. |
| ReClaim Vision | Grades donated computers against a real refurbishment standard. The model observes, a rubric decides. Currently in QA. |
Keystone · a living atlas of the world's industrial value chains, built to find the chokepoints. Educational, not investment advice.
Python, JavaScript, MATLAB, C, Java, Verilog, VHDL. Everything above runs in a browser or fully offline, at zero cost per month.
Registered electrical apprentice on the Master Electrician track, 2029. B.S. Business Administration, 2027. A.S. Engineering Transfer. A.S. Mathematics.