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AttatvaSystems
Selected work

Cutting a two-week release train down to two days

Client identity withheld under NDA
Client
Challenger bank, 400k customers
Sector
Fintech · United Kingdom
Delivered
2024
Stack
Terraform · GitHub Actions · Kubernetes · OpenTelemetry
Days from merge to production
11 → 2
Platform uptime, 12 months
99.98%
All work

The problem

A challenger bank with 400,000 customers and a release train that took eleven days from merge to production. Most of that was manual regression testing and a change-approval process that had accreted around a genuine incident three years earlier and had never been revisited.

What we did

We did not touch the core banking system. We rebuilt the path around it: infrastructure into Terraform, environments made reproducible, the regression suite automated and parallelised, and the change-approval gates rewritten with the risk team so the controls survived while the queueing did not. Progressive delivery behind flags meant a release stopped being an event.

What changed

Merge to production went from eleven days to two, with the same regulatory controls in place — the risk team signed off on the new gates rather than having them removed. Platform uptime over the following twelve months was 99.98%. Deploy frequency roughly quadrupled without a corresponding rise in change failure rate.

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Selected work

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attatvasystems@gmail.com · Replies within 1 business day, Kathmandu time (UTC+05:45)