Case study · Finance
Migrating a regional bank to a multi-account AWS platform
Atlas Federal Credit Union
- Industry
- Finance
- Client
- Atlas Federal Credit Union
- Stack
- AWS, Terraform, Kubernetes, Go, Python, Datadog
Challenge
What we were solving.
Atlas FCU's workloads were split across three cloud providers with no central governance, exposing the bank to compliance gaps during their planned expansion. Their existing CI/CD pipelines took 90 minutes for a single change, and on-call coverage depended on three engineers who knew the legacy stack.
Solution
What we built.
We designed a multi-account AWS landing zone with Control Tower, deployed Terraform-based infrastructure-as-code across 47 accounts, and built a central platform team that owns paved roads for the rest of the engineering org.
We also led the migration of 180 services to the new platform over 11 months, with zero customer-impacting incidents.
Results
What changed.
CI/CD pipeline duration dropped from 90 minutes to 7 minutes
On-call coverage expanded from 3 engineers to a 22-engineer rotation
Cloud spend visibility improved to per-product line
Regulator audit completed with zero infrastructure findings
Technologies
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