Anstey joins as sales and marketing director from his post of divisional director at SAS Software, while Lee has joined from DQ Global.
The new hires come following a period of growth, which includes a 20% rise in turnover and profit over the last 18 months.
Anstey, who also joins the board at Occam, said: "I am pleased to have been invited to join Occam during this exciting time in the company's development.
"Despite an unequalled reputation for quality of service and delivery within the existing customer base, Occam is still one of the best kept secrets in the data management industry."
At DQ Global, Lee was responsible for worldwide sales strategy for data quality software products.
Scott Logie, managing director at Occam, added: "As professionals, Ian and Richard are invaluable in that they bring with them a wealth of experience and drive from across the direct marketing, IT and sales disciplines. As senior appointments, they are essential additions to Occam as we continue to experience exceptional growth."
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