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Case studies

Selected work

These are the projects I would show a technical buyer first. Client work is anonymized. Each number carries its source.

[1]Selected

A block of clear glass on a black steel plinth. One orange channel enters the glass and splits into three channels that leave side by side. Three blank sheets of paper lie beside it.

2025 to 2026, Healthcare

A clinical documentation platform

One structured form that writes the operative note, the referral letter and the research record.

Under 1 sForm load, down from 8 to 12 seconds

A run of clear glass tubes on black steel stands. One joint is rejoined by a machined steel coupling, and a thin orange liquid flows through the repaired joint without a break.

2026, Agent systems

Fixes inside open source agent platforms

Memory limits, tool discovery, lost execution records and dead sockets, fixed with regression tests.

5Pull requests merged in Sympozium in one week

A small sealed cube of clear glass on a black steel plate, with one orange core held at its centre and a thin steel band around it like a seal.

2024, AI infrastructure

A signed macOS release for a Rust desktop app

A signed universal disk image, built in CI, for an app that shipped only on Windows and Linux.

8Files changed, 231 lines added

A long clear glass tube on black steel supports holds a row of evenly spaced orange droplets. A small steel valve near the end lets one droplet through into a glass cup below.

2026, Infrastructure

Shutdown, retries and lost messages

Graceful shutdown, queue acks and retry timing in Go and Python infrastructure.

5Pull requests merged in Dagu

A thin orange beam of light meets an upright slab of smoked glass in a black steel frame. Only one narrow line of light passes through a slot in the slab.

Security at input boundaries and in CI gates

Unquoted SQL identifiers, flag injection into a subprocess and a security gate that failed without a reason.

2,371Tests green on my branch, run by the OWASP maintainer

Seven thick clear glass cylinders in a row on a black steel tray. Each holds a column of orange liquid at a different, measured level.

2026, Agent systems

Measuring my own agent fleet

A cost ledger that matched the provider bill, smaller prompts and a menu bar app that shows how many agents fit.

1.1%Gap between my cost ledger and the provider bill, down from 17 times too high

[2]All work

2025 to 2026A clinical documentation platformOne structured form that writes the operative note, the referral letter and the research record.Healthcare 2026Fixes inside open source agent platformsMemory limits, tool discovery, lost execution records and dead sockets, fixed with regression tests.Agent systems 2024A signed macOS release for a Rust desktop appA signed universal disk image, built in CI, for an app that shipped only on Windows and Linux.AI infrastructure 2026Shutdown, retries and lost messagesGraceful shutdown, queue acks and retry timing in Go and Python infrastructure.Infrastructure 2026Security at input boundaries and in CI gatesUnquoted SQL identifiers, flag injection into a subprocess and a security gate that failed without a reason.Security 2026Measuring my own agent fleetA cost ledger that matched the provider bill, smaller prompts and a menu bar app that shows how many agents fit.Agent systems 2024 to 2026308 merged pull requests in other people's codeGoogle, Strapi, Remotion, Prefect, Appium and about a hundred other organizations.Open source

Next step

If an agent or LLM feature breaks in production, send me a written brief.

I reply in writing within one working day.

How it starts

[1]Send a written brief
[2]Sign the agreement
[3]Week 1 starts