Product · Security · Infrastructure

Selected work

Start with three featured projects or explore the systems I’ve built for agent safety, payments, observability, and more.

16 case studies1144 automated tests15 architecture decisions

Featured case studies

01 / Product leadership

Hire nearby. Pay after approval.

A Ugandan marketplace for matching with local taskers, coordinating the job, and paying in UGX.

02 / Defensive security

Inspect suspicious messages without opening the link.

A browser workbench that explains the signs of mobile-money scams, lookalike domains, and USSD traps.

03 / Developer tools

Replay an AI agent’s failure in a test.

A recorder and replay tool for comparing AI agent runs without repeating live model or tool calls.

incident.flight.json

Recorded tool call · payment-api · 15m

{
  "p99_latency_ms": 1840.0,
  "anomaly": true
}

✓ Matching input replays the recorded response

What if the call asks for 30 minutes?

TrajectoryDivergenceError
window: expected "15m", got "30m"

AgentFlight replay · Simulated incident from the project README

Open source

Each case study explains the problem, the design, and how to check the evidence.