Core banking, re-architected for real time
A monolithic ledger rebuilt as event-driven services — settling billions in volume with sub-50ms latency and zero-downtime migration.
- Client
- Ledgerline
- Industry
- Fintech
- Delivered
- 2026
- Platforms
- Web console · Partner APIs
- Faster settlement
- 4.2×
- Uptime
- 99.995%
The challenge
A monolithic ledger settled payments in nightly batches, limiting new products and making every release a risk to a business that cannot go down.
Our approach
We split the ledger into event-driven services behind a strangler pattern, migrated balances with continuous reconciliation and moved settlement to real time with no downtime.
What we built
- Event-driven ledger services on Kafka with exactly-once settlement
- Continuous reconciliation during a zero-downtime migration
- Real-time treasury dashboards for operations and finance
- Infrastructure as code on Kubernetes with automated rollbacks
Technology
- Kafka
- Go
- Kubernetes
- PostgreSQL
Have a platform like this in mind?
Tell us where you want to go. We'll come back with senior engineers, a clear plan and honest numbers.
What happens next
- 1
A reply within one business day
A senior engineer reads your brief and replies with real questions, not a sales script.
- 2
A focused discovery call
Thirty minutes on your goals, constraints and what success should look like.
- 3
A clear, shareable plan
Scope, team shape, timeline and cost, written up so you can take it to your board.