Work/Public sector · 4M citizens

Public sector · 4M citizens · 2024-2025

Legacy mainframe to
cloud-native, zero incidents.

A state government was running citizen services on a 1990s COBOL mainframe with monthly four-hour outages. We led the strangler-fig migration to a cloud-native platform.

Client
U.S. state government
Engagement
Project · 14 months
Team
2 PMs · 1 designer · 7 engineers
Status
FedRAMP · WCAG 2.2 AAA
Stack
go · postgres · azure · keycloak
05 · The results

Numbers their team verified.

99.99%
Uptime SLO maintained

Year 1 post-migration. Down from monthly 4-hour outages.

+34pts
Citizen NPS

Independent surveys before/after. Largest gain on accessibility-dependent users.

$2.1M / yr
OpEx saved

Mainframe maintenance costs decommissioned.

Two attempts had failed before this. The thing Teckfinity got right was being honest about what couldn't be moved fast — and ruthlessly disciplined about the things that could.

CIO
U.S. state government
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