Core Harbor Software Consulting delivers project-based programming work for organizations that still run revenue on legacy stacks. The engagements below are examples of scopes we quote; each is tailored after a written discovery phase.
Mainframe and batch modernization
We work on modules where JCL schedules, copybooks, and CICS transactions still carry daily settlement or fulfillment logic. Typical deliverables include interface catalogs, parity test suites against production extracts, and strangler services that let you route a slice of traffic to new code without freezing releases.
Monolith decomposition (.NET / Java)
When a single deployable hosts decades of features, we map bounded contexts from actual call graphs—not aspirational domain diagrams. Spikes prove whether extraction via events, modular monolith boundaries, or sidecar services matches your operational constraints.
Integration archaeology
Legacy modernization stalls when “temporary” file drops and FTP bridges outlive their owners. We instrument those paths, document schemas, and implement replacement adapters with explicit retry and dead-letter behavior.
What we need from you
Bring repository access (or sanitized samples), scheduler definitions, and a named product owner who can confirm behavioral edge cases. We do not promise specific calendar dates or headline cost savings without that context.
Ready to describe your stack? Outline your legacy scope.