Cook, who brings over 20 years of real estate lending experience, will be based in London and report directly to chief executive, Guy Harrington.
She will be responsible for launching new products, whilst also enhancing the existing unregulated commercial and residential and regulated residential product range.
She will work closely with key stakeholders, including Glenhawk’s institutional and intermediary partners, to develop and deliver product propositions, devise strategies and support marketing campaigns to maximise margin and distribution opportunities.
Cook joins Glenhawk from Bank of Ireland, where she spent nine years, including the last five as head of product and pricing.
During this time, she was responsible for a team of 15.
Her previous roles included service manager at Post Office Financial Services and offsite operations manager at Lehman Brothers.
Harrington said: “Having spent the first quarter of this year refining our product proposition, we have exciting plans to expand our offering beyond the bridging space over the next 12 months.
“This reflects increasing borrower appetite, underpinned by the more traditional forms of financing unable or unwilling to provide borrowers with the services they require, which has seen enjoy a record month of lending, a fantastic achievement given the current backdrop.
“Christie’s success over 20 years speaks for itself, and her understanding of the real estate lending stakeholder landscape will be vital as we look to enhance our existing product offering and accelerate the roll out of new products.
“At the same time, her familiarity with institutional style practices will be welcome as we continue to mature as a business.”
Cook added: “Bucking the trend, Glenhawk has continued on its upward growth trajectory despite the challenges of the last 12 months.
“With the support of two global institutions and a favorable market backdrop, I am excited by this opportunity to lead the business in providing borrowers with an increasing range of market leading products.”
