Mainframe & COBOL Services
Mainframe System-Level Testing & QA
We perform thorough unit testing of each new or modified program, including regression testing and analysis, to make sure the application as a whole still works as expected after every code change.
Why it matters
The systems your business can't stop
On a system that runs around the clock, a change is only finished when it is proven. We test the program, the application around it, and the interfaces it touches.
For larger changes we run old and new code side by side on realistic traffic, and we design the rollback before the cutover.
What we do
What's included
- Unit testing of each new or modified program
- Regression testing and analysis
- Certification support with networks and ATM vendors
- Side-by-side runs of old and new code
- Testing on simulated production traffic
- Rollback planning before cutover
In practice
Where testing matters most
- Card-network and compliance mandates
- Cryptographic and HSM changes
- Data-platform migrations
- Platform consolidation after a merger
- Any change to a 24/7 transaction system
How we work
Not a body shop. Not a slide consultancy.
Senior only
Experienced engineers with deep mainframe backgrounds. The engineers named in the scope do the work.
Fixed scope, fixed fee
Every engagement is scoped in writing and priced before week one, with milestone billing.
Change as little of the core as possible
We work in the I/O modules and copybooks, keep your business logic, and prove changes before cutover.
U.S. team
U.S. citizens on U.S. payroll. No offshore handoff.
Engagement models
Flexible ways to work together
On-site
In person at your locations.
Remote
Flexible and lower cost.
Short- or long-term
For as long as you need us.
Fixed-scope
Contract programming as a defined project.
Platforms
Where we work
- z/OS
- CICS
- DB2
- IMS
- JCL
- VSAM
- iSeries / RPG
Pair it with AI for COBOL
Local AI that helps your team understand and document COBOL systems, inside your perimeter.
Hire COBOL programmers for your mainframe project.
U.S.-based COBOL engineers, on-site or remote, short-term, long-term or as a fixed-scope contract project.