Work

Selected engagements

A sample of recent work. Full case studies are available under NDA — ask and we will walk you through one properly.

A twenty-year core, unwound without a freeze window

Retail bank · 3 years

BankingMigrationKafka

Interoperability

Eight clinical systems, one patient record

Health system · 18 months

HealthcareFHIRIntegration

Real-time visibility across a national network

Telco · 12 months

TelecomGoKubernetes

Reconciliation rebuilt on an event backbone

Payments group · 9 months

BankingTemporalPostgres

Peak resilience

Checkout that holds through the season

Retail group · 6 months

CommerceReactLoad

Grid data made legible to the people who act on it

Energy operator · 14 months

Quarterly releases to weekly, portfolio-wide

Telco · 18 months

TelecomPracticeCI/CD

Patient services

A booking platform that clinics actually use

Provider network · 8 months

HealthcareProductTypeScript

Warehouse and ERP speaking one language

Retailer · 10 months

CommerceERPIntegration

Outcomes clients stand behind

7×Improvement in deployment frequency over 18 months

41%Reduction in lead time for change, healthcare

8Clinical systems consolidated to one record surface

0Freeze windows required during core migration

Want the detail behind a case

Most of the interesting parts are under NDA. We can still talk you through the shape of it.

Tell us about it → hello@onecluster.co