Legacy systems hold decades of business intelligence. We help you unlock it.
Greymine modernizes enterprise IT — from IBM i and COBOL to modern platforms — without losing the embedded business rules and institutional knowledge your operations depend on.
Not line-for-line conversion. Genuine modernization.
We understand that your legacy systems contain undocumented tribal knowledge and embedded business rules built over decades. Our approach starts by understanding what your systems actually do before reimagining how they should work.
Business Process Evaluation
Map current processes, identify embedded rules, and document the institutional knowledge that lives in your codebase.
Technical Evaluation
Assess platforms, dependencies, and performance characteristics to define the technical landscape and modernization path.
Planning & Solution Strategy
Design the target architecture, define milestones, and build a phased execution plan that manages risk at every step.
Execution
Deliver the modernized solution with hands-on development, testing, and knowledge transfer to your team.
What We Do
Four core practice areas, each backed by deep domain expertise and decades of field experience.
Legacy System Modernization
IBM i (RPG, CL, COBOL), COBOL-to-.NET, and cross-platform migrations that preserve business logic while moving to modern architectures.
EDI Development & Administration
ANSI X12 transaction sets including 204, 210, 214, 856, and 990. Full-cycle EDI: mapping, testing, partner onboarding, and ongoing support.
Performance Optimization
Capacity planning, performance troubleshooting, and continuous monitoring for mission-critical enterprise systems.
AI-Assisted Development
AI augments human expertise — it doesn't replace deep domain understanding. We integrate AI tools into development workflows where they deliver real value.
Ready to modernize?
Whether you need to migrate off a legacy platform, optimize system performance, or integrate EDI into your supply chain — we should talk.
Get in Touch