01Blog
Practitioner writing.
Engineering posts and positioning notes from the team. Trading UIs, regulated mobile, audit trails, data pipelines, and AI features that work in production.
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June 4, 2026
ai-engineering claude-code agent-workflows
Karpathy's CLAUDE.md Skills File, reviewed
Forrest Chang's CLAUDE.md skills file went viral because it solves a problem every serious user of AI coding agents has felt. Here is what is in it, why it works, and where the framing is incomplete.
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May 14, 2026
engineering-leadership hiring v1
Hiring senior engineers vs hiring an agency for your v1
A v1 rarely fails because you had too few engineers. It fails because you bought the wrong shape of engineering. Here is how we think about the choice between in-house, contractor, and agency.
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May 14, 2026
fintech compliance engineering-leadership
RBI master directions for engineers
Most engineers hear about RBI master directions filtered through a compliance team. Here is the translation: which directions reach engineering work, and where each decision actually lives.
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May 14, 2026
engineering-leadership frontend fintech
Strangler Fig in a regulated codebase
Most teams hear 'incremental migration' and picture a six-month parallel codebase. The Strangler Fig pattern is more disciplined than that, and in a regulated environment it is the only safe way through.
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May 14, 2026
ai engineering-leadership testing
What an eval bench actually looks like
Every AI team agrees evals matter. Few have one. Here is the shape of the eval bench we build in week one of an agent engagement, with the wiring that turns it into a CI gate.
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May 14, 2026
frontend architecture react
When IndexedDB beats Redux
Two state-management choices that look similar from a distance. They behave very differently when the network goes wrong, and the choice between them often decides whether a regulated surface ships at all.
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April 29, 2026
fintech frontend engineering-leadership
The audit trail is a first-class component, not a logger
Most teams treat the audit trail as backend telemetry. Then a regulator asks what the user actually saw, and the answer is in the wrong system. Here's how we design the client-side audit hook from the first commit.
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April 22, 2026
engineering-leadership positioning
What 'senior-led' actually means in delivery
Every agency claims a senior-led delivery model. Almost none of them mean the same thing by it. Here is what the phrase costs us to honour, and why we think it is worth saying out loud anyway.
02. Newsletter
More on engineering for serious teams, monthly.
Practitioner notes on the work behind real FinTech systems. One short essay or case study a month. No marketing, no sequences. Reply to talk.
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