Strategic Advisory & Consulting
I help IT executives and architects turn mainframe complexity into clear, confident strategy — with independent advice and no vendor agenda.
- Architecture roadmaps & transformation plans
- Mainframe modernisation strategy & platform decisions
- Executive briefings and decision documents
Training & Coaching
Practical, experience-led learning for architects and engineers who want to understand the mainframe and work with it confidently.
- Solution Architecture training
- Don’t Be Afraid of the Mainframe – Mainframe training program
- Group workshops & in-company sessions
- Online courses
Experience That Matters
- 30+ years mainframe systems expertise
- 15+ year as Lead Architect
- Co-author of multiple IBM Redbook co-author publications
- MSc in Computer Science, MBA & Distinguished Chief Architect certification
Current Focus
Author of “Don’t Be Afraid of the Mainframe”. A practical guide for anyone who needs to understand mainframe technology and make informed decisions about transformation, strategy, and integration.
📧 ndegreef@seneqa.nl
🔗 [LinkedIn Profile]
📚 Insights at [execpgm.org]