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From vibe coding to harness engineering: modernizing a regulated environment with AI

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From vibe coding to harness engineering: modernizing a regulated environment with AI by Anyul Rivas
Room 5 · Conference · 09:30-10:20

Summary

Section titled “Summary”

AI-enabled migration of a banking mainframe to the cloud required a shift from “vibe coding” to “harness engineering.” The talk shows how to control AI-generated code in regulated environments through spec-driven development, evolutionary pipelines, and continuous validation, balancing agility, safety, and changing security rules.

Key points ⭐

Section titled “Key points ⭐”
  • 22:00 Review ovoid re-deriving context
  • 31:00 Review this part to get the slide

Timeline

Section titled “Timeline”

01:00

Section titled “01:00”
  • challenge

04:00

Section titled “04:00”
  • is it just a POC or something Real ?

05:00

Section titled “05:00”
  • grill me with Docs

07:00

Section titled “07:00”
  • Verify The plan is easier than very[?] 300 files generated
  • No SDD But a custom plan
  • Archify skill ?

09:00

Section titled “09:00”
  • Vibe coding -> Demo -> create harness for production Redy
  • vibe code To validate the plan an Demo to Business
  • But No vibe coding for production

11:00

Section titled “11:00”
  • Demo to production.

14:32

Section titled “14:32”

19:00

Section titled “19:00”
  • Better to say what to do instead of No To do

20:00

Section titled “20:00”
  • Token Reduction + AI Fin ops

22:00 ⭐

Section titled “22:00 ⭐”
  • Review ovoid re-deriving context

25:00

Section titled “25:00”
  • sub agent is controversal
    • => Not working
  • Human => computer [?] same problem

27:00

Section titled “27:00”
  • TDD Didn’t work
  • Anthropomorphize[?] Human process

31:00 ⭐

Section titled “31:00 ⭐”
  • what is our job Now
  • Review this part to get the slide

34:09

Section titled “34:09”

36:00

Section titled “36:00”

39:15

Section titled “39:15”

Extra notes

Section titled “Extra notes”
  • slide
  • https://docs.google.com/presentation/d/1qY78jdOwsyRLk-1MmpQPQ1v5pktPMuyOVWKNeFhN74Y/mobilepresent?slide=id.p
  • The guy told me there are 20,000 credits per person and that it could go up to 150,000 credits. At the start they blew their quota, even the company quota, so they had to rework that to improve their token usage. For vibe coding they used everything like Claude Code, Cursor, etc. Then, when they entered the production phase, they used tools like GitHub Copilot.
  • For sharing skills etc., they didn’t put them in the repo because they couldn’t (I don’t really know why), so they shared them with each other manually.