Scottish government CPO and commercial director Alastair Merrill has announced he is leaving his role.
Merrill, who has been in the job for five-and-a-half years, is leaving at the end of January to become vice principal at the University of St Andrews.
During his time as CPO Merrill called for EU thresholds to be raised, while the Scottish government launched the supplier portal Supplier Journey and revised PQQs. The Procurement Reform (Scotland) Bill was also passed by the Scottish Parliament.
Merrill said: "I have worked with a fantastic team of colleagues both within the Scottish Government and across the public sector procurement leadership, through a period of huge change that has seen the Scottish model of procurement develop as a distinct, innovative and internationally-recognised approach.
"Building on the reforms introduced by John McClelland and my predecessor Nick Bowd back in 2007, procurement reform in Scotland is government-led but owned across the whole public sector in Scotland; and is delivered in partnership with the business and third sector communities - to be both business friendly and socially responsible, and to deliver the maximum economic benefit from public sector spend on goods and services."
Ian Howie, currently deputy director for collaborative and Scottish government procurement, has been appointed CPO on a temporary basis before a recruitment process for a permanent successor begins in the spring.