About · HLLMR Ventures

How HLLMR Ventures works

HLLMR Ventures owns the HLLMR name and the work done under it, and runs four divisions, each with its own site and its own customers: TOOLS for software, UPGRADE for business systems, LIVE for music and media, and GAMING for games and mods.

A division is part of the company, not a separate one. Any of them could become its own company one day, with its own name, contracts and structure. Until then, everything is HLLMR Ventures LLC.

How we build

AI makes development faster. It doesn't excuse missing tests, unclear ownership or claims nobody checked. Every release is checked against its own evidence before it ships, and every one can be rolled back. The method is public as Writwall, and argued in the essay Document control for AI-assisted development.

Principles, in every field

See it work. A claim that something works is checked, not assumed, whether it is software, a sound system or a booking.
Keep the record. Decisions are written down with the options that were turned down.
A person decides. Tools and AI agents do a lot of the work. A named person is accountable for what ships.
Prove the way back. Every change has a tested way to undo it before it goes live.
Own what matters. The house runs its own infrastructure and keeps its own data.
Say the limits. Every case study ends with what it does not prove.

From the founder

HLLMR Ventures is run by its founder, David Hellmer, who writes:

I build control systems, and lately I build software the way I was trained to build control systems.

Twenty years in building automation and integrated building systems: the controls, physical security, fire, and networks that run a building, and the commissioning discipline that proves they do what the drawings say. Before that, the Navy's nuclear program, where you assume nothing works until you have watched it work.

Now I build software with AI coding agents every day, and the same discipline turns out to be the missing piece. An agent will report a task complete when it is not. A control nobody has watched deny anything is an assumption. A plan regenerated from the code launders drift into the record. None of that is new. It is the failure mode every commissioning engineer already knows, arriving in an industry that has not learned to distrust a status point yet.

David Hellmer, founder · dhellmer.com