Martin is Managing Director of Enterprise Platforms and Storage for Citigroup Technology Infrastructure.
In his current role, as Global Head of Mainframe and Host System Services, he is responsible for managing operations and engineering all Enterprise Systems disciplines globally including z/OS, z/VM, LinuxOne, z/TPF, hardware Configuration Management, CICS, Websphere, MQ Series, Network Software, Mainframe DBA functions, iSeries, Stratus Unisys and Tandem systems. He is also responsible for reengineering the infrastructure for further efficiencies and leads a team of more than 450 direct staff, contractors and vendor resources.

In 2009, Martin became the IT Function Head for Global O&T - Enterprise O&T and Corporate Services. He was the Global Engineering Lead for z/Series. He was also the Operational owner of all System "Z", System "I" and Home Banking technology in North America. In addition, he managed Citi's z/OS, TPF, CICS, Network Software, WebSphere Business Integration, MQ Messaging, z/VM and z/Linux teams.
Martin has been working with Citigroup for 36 years. He joined Citibank in 1986 as a MVS Manager. In 1999, he became a Director for Corporate O&T and had direct responsibility for managing a team of 100 engineers supporting the operational support of z/OS, z/VM, z/LINUX, z-Network software, CICS, MQ series, and database support, supporting Citibank, CitiCards, Student Loan, Private Banking, GTS, Cash Management and FX systems.