Notes from production
6 articles
Blog
What we learned building and running systems that carry money — written by the people who built them, with the mistakes left in.
Underwriting·26 Aug 2026
How AI Changes Modern Underwriting Engines
AI’s biggest change to underwriting lands before the decision: it turns unstructured documents and transactions into evidence rules and models can use.
Shahaf Lavi
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Engineering·02 Sep 2026
Where LLMs Actually Belong in Financial Services
LLMs earn their place in finance on the messy language around the core systems — not on the money movement or the regulated decisions themselves.
Shahaf Lavi
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Engineering·09 Sep 2026
AI Automation Without Losing Control
AI automation is only a win if control survives it: separate recommendation from action, keep a manual path, and make every outcome reconstructable.
Shahaf Lavi
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Risk·12 Aug 2026
What a Risk Committee Actually Asks Before You Go Live
Teams prepare for the wrong meeting. They arrive with accuracy metrics and leave with eleven questions about everything else — here is the list, and the artefact that answers each one.
Shahaf Lavi
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Engineering·29 Jul 2026
Eleven Weeks to a Live Decisioning Engine
A week-by-week account of one engagement — the data reality check, the two weeks we lost, shadow mode, and a deliberately cautious launch.
Shahaf Lavi
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Opinion·03 Jul 2026
When a Rules Engine Beats a Model
Three cases from last year where the honest recommendation was: do not build a model. Build a rules engine and a good interface.
Shahaf Lavi
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Shahaf Lavi
Read →
Engineering·02 Sep 2026
Where LLMs Actually Belong in Financial Services
LLMs earn their place in finance on the messy language around the core systems — not on the money movement or the regulated decisions themselves.
Shahaf Lavi
Read →
Engineering·09 Sep 2026
AI Automation Without Losing Control
AI automation is only a win if control survives it: separate recommendation from action, keep a manual path, and make every outcome reconstructable.
Shahaf Lavi
Read →
Risk·12 Aug 2026
What a Risk Committee Actually Asks Before You Go Live
Teams prepare for the wrong meeting. They arrive with accuracy metrics and leave with eleven questions about everything else — here is the list, and the artefact that answers each one.
Shahaf Lavi
Read →
Engineering·29 Jul 2026
Eleven Weeks to a Live Decisioning Engine
A week-by-week account of one engagement — the data reality check, the two weeks we lost, shadow mode, and a deliberately cautious launch.
Shahaf Lavi
Read →
Opinion·03 Jul 2026
When a Rules Engine Beats a Model
Three cases from last year where the honest recommendation was: do not build a model. Build a rules engine and a good interface.
Shahaf Lavi
Read →
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