John Connolly, who will report to the chief executive, said his priority was to improve the performance of the firm's existing IT.
"I am looking at making systems work better to suit the business. I want to improve what we have, rather than add more," he said.
Connolly has a series of projects planned for the next 12 months, and a further eight years of projects in the pipeline.
One example is an upgrade of the Oracle finance system. "We need to match it to the business processes," he said.
Connolly said IT could also support the current engineering project to replace all the escalators. "We can put instruments on these escalators to see which bits are performing best and which need work. The IT and engineering teams are working closely together, and I would like to see more of this sort of thing."