No. 01 — MMXXVIOpen to consulting — Q3 2026
Portfolio
DavidChalloner
Building at the edges of AuthZ, Reliability, and Agentic AI.
Most recently
Uber Tech Lead · Regulated Cloud, Google
Authorization · Data Governance · Service Mesh
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§I
Currently
A short ledger of present work.
What’s on the bench this season. Some of it will become articles; some of it will quietly fail and teach me something.
▲Building
Just Auth — AI-powered access governance
Intercepting privileged data access — human and agent — with real-time business justifications and tamper-proof audit.
●Building
RepoGauge — evaluating AI coding agents
Mines your repo’s bugfix history into SWE-bench-style tasks and benchmarks coding agents on the code you actually ship.
◆Building
ClawFS — a filesystem for AI agents
POSIX-compliant, shared, object-backed. Written in Rust for multi-client agent workloads without the metadata DB overhead.
◐Writing
“Climbing the Agentic Coding Ladder”
A field essay on where autonomous coding agents earn their keep — and the rungs that aren’t yet stable.
§II — Inside this issue
4 Chapters
§III
From the archive
“Toil is the work you do that lacks enduring value. Eliminating it isn’t about lazy engineers; it’s about keeping the team’s attention on the problems only humans can solve.”
§IV
To close
Have a hard problem?
Let’s talk.
I take on a small number of engagements each quarter — usually two to six weeks — with teams who are serious about shipping and honest about where they’re stuck.