CI/CD and infrastructure as code for payment switching services

The client

Interswitch — payments infrastructure, Lagos, Nigeria.

The challenge

Interswitch's teams each maintained their own deployment scripts and environments. Provisioning a new environment took weeks of tickets, releases needed manual sign-off steps that were easy to skip, and auditors asked for evidence that was scattered across tools.

What we did

We built a shared delivery platform that every team could adopt without rewriting their applications.

• Reusable pipeline templates with mandatory test, security scanning and approval stages
• Terraform modules for networks, compute, databases and secrets, applied through pull requests
• Ephemeral test environments created per branch and destroyed automatically
• Secrets management with HashiCorp Vault and short-lived credentials
• Audit trails generated from the pipelines for compliance reviews

Results

More than forty services now ship through the same pipeline standard. New environments are provisioned in hours instead of weeks, every infrastructure change is reviewed and recorded, and compliance evidence is produced automatically.