During my career as software engineer, project manager or product manager I encountered a huge number of systems.

And when I say "encountered" I mean "used", "integrated", "configurated", "budgeted", "planned", "interfaced" or what else was the task at the time.

Business systems:

• EUREX T7 and C7 and predecessors
• DEVON 2.22
• DEVON 2.34
• DEVON 6
• IBM Power Trader (ORS)
• Trading and Backoffice-Systems of the derivative exchanges
• DECIDE to V5.5
• Revendex' primedex®
• Octagon
  less intensive contact I had to

• Summit
• Murex
• Reuters
• Bloomberg
• Speedy
• UBIX
• Front Arena
• TickTS
• ION Rolfe+Nolan Ranbase
• Clearvision
• Gloss, Gloss HV
• GEOS

Some relevant benchmark figures of the last 30 years:

• Budget responsibility up to 4,5 M€ p.a.
• Teams up to 20 people
• >30 years experience in listed derivatives and securities
• >30 years to principal software engineer
• >20 years of architectural planning and design of IT landscapes
• >10 years of project management in complex technical environments across languages and country borders
  so I think of myself as business fluent in German, Hessian and English with some some basic knowledge in French and currently adding some Japanese

Projects to be mentioned:

• DTB from 1989/1990 until EUREX 2020
• MIFID I and II, MIFIR, Dodd-Frank, EMIR
• Withholding tax for listed derivatives
• FATCA, IFRS, IFTT (Italy, not the Tool)
• Connect DECIDE to EUREX
• Connect DECIDE to trading brokers
• Integration of Rolfe&Nolan RANBASE and Clearvision into the IT landscape in Commerzbank
• Migration BO-System DEVON 2.22 to RANBASE
• Introduction of EUREX' RiskBasedMargining and PRISMA
• Set up of derivatives trading at comdirect and for the foreign branches of Commerzbank
• Set up of BO-Systems for Commerz Financial Products CFP
• Integration and further enhancements in derivatives trading at Dresdner Bank
• Business driven Migration IMS-DB to DB2