About
About the firm
Most of this site shows artifacts from machines. This page is about the people and the sequence behind them, held to the same rule: no claim without a receipt.
Greenfield Production Systems began as an infrastructure project, not a services firm. We built a microservices platform and, around it, a methodology for constructing production systems: specification before implementation, with quality enforced between stages rather than inspected at the end. The wager was that software could be manufactured, and that discipline between stations would matter more than heroics at any one of them.
The first client engagement was OTR Select, a production SaaS platform delivered in six weeks. The factory already existed by then, but it wasn't ready for production autonomy, so we didn't use it. We delivered on Factory v1 instead: every line AI-written, with an architect reviewing at stations that are now automated gates. The week-by-week delivery record is in the case study (view the artifact) .
Then we made it ready. Each factory version automated stations that had needed an architect's review, and we proved the result somewhere anyone can check our work: Factory v2 ported Bugzilla, a 25-year-old codebase most engineers recognize, end to end on its own. Five services, a frontend, and the e2e journeys, through roughly 40 gates. The teardown is public (view the artifact) , including what the gates caught and what we chose not to build.
Verification came last because it's the harder problem. Factory v3 reads a system without modifying anything and produces a behavior catalog: every observable behavior, cited to the source it was read from. It's deliberately a separate machine from the factory that builds, since builders shouldn't grade their own work. The first estate we turned it on included our own prior build (view the artifact) , which is the only honest place to start.
That sequence is the firm's credential: build under supervision, automate the supervision, then verify what you built. Everything we claim about the machinery links into the proof library (view the artifact) , and the factory keeps its own history as release notes (view the artifact) because that's what it is.
Who you work with
Greenfield Production Systems is run by Josh Whitlock, who spent the decade before founding it building and scaling software engineering teams. On every engagement he is the senior architect: he sets direction, reviews where judgment is irreducible, and owns the result.
That isn't a title sitting above a delivery team, because there is no delivery bench and no account layer. The factory does the volume work, and its transcripts show exactly what it did.
The firm operates in the United States. Nothing is built or reviewed offshore.