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Mainframe Bridge Module
A tested starting point for mainframe bridge module reduced repeated setup work.
We built a practical FinTech solution combining live cdc bridge, strangler fig extraction, and automatic ledger consistency. The project delivered 60% Operating costs Reduction and Zero Service Downtime.
Trusted by teams building ambitious products
Global core banking system processing 10M+ daily transactions on high-cost older hardware.
Cloud Architect + Cloud-Native Engineers + DevSecOps Specialist assigned for the complete modernization project lifecycle.
Migrating essential accounting and ledger logic to the cloud without impacting 24/7 availability.
A practical solution designed around the client’s existing tools, teams, and day-to-day workflow.
The client’s core banking logic was trapped within a 20-year-old mainframe. New feature deployment cycles took 6+ months due to the high risk of ripple-effect failures in the brittle COBOL codebase. Scaling for peak holiday traffic required preemptive hardware over-provisioning, costing millions in idle Operating costs.
The biggest issues were big bang failure, mainframe lock-in, and talent scarcity. The team needed a faster, clearer way to manage the work while keeping the right checks in place.
Expensive, long-term hardware commitments with limited burst capacity.
Auto-scaling Isolated cloud services that respond to live traffic spikes in moments.
Manual, high-risk code freezes required for mainframe updates.
Automated workflows allow for safe, independent microservice updates multiple times a day.
End-of-day reconciliation caused delays in live use use use use use use customer data updates.
Transactions trigger live event notifications across the entire banking ecosystem.
Ensured atomic updates between smaller independent services and older databases to prevent Inconsistent Data during the multi-year migration window.
Embedded automated IAM policies and encryption at rest/transit to meet Established banking security requirements on AWS.
Added automated node recycling and circuit breakers to ensure the new core never experienced a systemic failure.
Tested foundations helped the team spend less time on setup and more time on the parts that made this product useful.
A tested starting point for mainframe bridge module reduced repeated setup work.
Reusable work for finops safety controls module let the team focus more time on the client’s specific needs.
This made it easier to add sre monitoring platform without rebuilding common foundations.
A tested starting point for ledger consistency module reduced repeated setup work.
A straightforward before-and-after view of what changed for the team and their customers.
Moving from mainframe licensing to AWS consumption-based pricing yielded immediate Operating costs savings.
Smaller independent services allowed product teams to deploy new savings products without mainframe code freezes.
The Strangler Fig pattern ensured that not a single customer session was lost during the extraction.
Coretus didnt just move us to the cloud, they surgically extracted our core logic while the heart was still beating. We avoided the Big Bang' failure everyone feared and achieved a reliable transition that our internal teams now fully own.