Mark Whitfield is an SC-cleared Senior IT Project and Engagement Manager with a career spanning over 30 years (1990–present) focused on fault-tolerant HPE NonStop (Tandem) NonStop Kernel (NSK) systems.
His background bridges low-level system programming with enterprise project delivery and hybrid cloud modernization.
🛠️ Core Technical Toolset
- Languages & Scripts: TAL, COBOL85, NonStop C/C++, Screen COBOL (SCOBOL), and TACL.
- Databases & Middleware: NonStop SQL, Enscribe, and Tandem PATHWAY.
- Utilities: SCF, FUP, INSPECT, and XPNET.
⏳ Chronological Career Highlights
- Engineering & Electronic Banking (1990–1995): Worked with The Software Partnership and Deluxe Data International, engineering pre-internet desktop banking systems like
sp/ARCHITECT-BANKfor TSB, Bank of Scotland, and Rabobank. Led core architecture and mainframe coding for the Barclays Business Master II platform and built IVR suites for Girofon in Denmark. - Product Management & Monitoring (1995–2013): Spent 18 years at Insider Technologies Limited (ITL) transitioning from Senior Programmer to IT Product/Project Manager. Co-developed the
Reflex 80:20diagnostic suite to monitor transaction logs on HPE NonStop systems integrated with ACI Worldwide BASE24. Acted as a technical consultant for Euroclear (CRESTCo) performance benchmarking on S7000 hardware and managed software lifecycles for clients like HSBC and Al Rajhi Bank. - Enterprise Leadership & Hybrid Cloud (2013–Present): With organizations like Wincor Nixdorf, Betfred, and Capgemini UK, he has combined mainframe expertise with Agile and PRINCE2 frameworks. Key achievements include leading a £5m+ HP NonStop core swap and log monitoring overhaul for retail banking, as well as connecting legacy HPE NonStop X environments to cloud platforms like AWS, Azure, and MuleSoft.
Mark Whitfield, HPE NonStop Tandem Experience since 1990
