Duncan started his career in the oil industry, as a programmer working for petroleum engineers and geologists. As well as developing graphical analysis tools for engineers and geologists, he also wrote systems that allowed disparate systems to communicate with each other via marine satellite.
Duncan then moved into the financial industry, initially developing comms systems for investment banks. He then further specialised in application development in asset finance and FX derivatives trading. While at Chase Manhattan Bank (now JP Morgan Chase) he became involved in the design and implementation of trading floor and data center infrastructure and was responsible for delivery of the infrastructure and applications for the whole derivatives trading floor.
Duncan spent 4 years at RBS, running a variety of major programs, including the delivery of new HQ buildings, data centres and regulatory transformation for the Corporate Banking and Financial Markets division. In 2006, Duncan moved into specialist IT infrastructure consulting, initially at PTS Consulting (as head of the data centre practice), then CS Technology (as head of the data centre practice, then EMEA CTO and head of CST Middle East), and then as Managing Director for Align Communications (EMEA).
In 2016, Duncan was recruited to run a major transformation program for the Bank of England. This was initially intended to deliver a new data centre, but Duncan redeveloped the business case to move the entire IT estate out of existing bank buildings into two colocation data centres with improved resilience, performance and financials, as well as enabling a migration of some systems into the cloud. Designing the high-profile program took nearly two years and was, at the time, the biggest ever signed off by the Court and Governors.
Duncan joined CBRE in 2018 to set up a new digital infrastructure advisory business within the Data Centre Solutions Group. This involved providing advisory services to enterprise and public sector clients including UBS, Lloyds Bank, Heathrow Airport, Blackpool Council and Epsilon Telecoms. A key area of focus was the inter-networking of 5G and fixed fibre networks to provide peering solutions.