Our Team

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Graydon Sharratt


Graydon started Greenstone Recruitment in early 2006. He grew up on a beef and sheep farm in South Africa. He and his family moved to New Zealand in 2001. Graydon has an Honours degree in Economics and 10 years of banking experience: 3 years as a Senior Rural Banker with the Bank of New Zealand and 7 years of Investment Banking experience in South Africa.  He is a keen sportsman and has completed multiple Ultra-marathons and marathons. Graydon is also a licenced immigration adviser and has served on the Licensed Immigration Advisers Reference Group.

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    Rebecca Armstrong

    Client Manager

    Rebecca was born and raised on a dairy farm in New Zealand. She has studied in Human Resources and held HR and Recruitment roles both within Agribusiness and a number of other sectors.  Her focus is on working with both candidates and employers to help find the best fit possible.  She enjoys spending time with her young family, developing her lifestyle property and squeezing in fitness training and social sports where she can.

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      Ruth Ouwehand

      Office Administrator

      Ruth is the Office Administrator for Greenstone Recruitment and Greenstone Global. She comes with a background in Office Administration and Banking, including 10 years at the ANZ Banking Group up to branch manager level. She holds a National certificate in business studies.
      Ruth is married with three children, two of whom are NZ Age Group swimming champions. For many years she has been heavily involved with the Te Awamutu swimming club, from the finances and administration to Learn To Swim teacher and officiating.


        Barbara Sherson

        Accounts Administrator

        Barbara is the accounts administrator for Greenstone. Barbara has a New Zealand Certificate of Commerce and has worked in various office roles during her career. Barbara has the unenviable job of keeping everything together and supporting both the recruitment and immigration teams!


          Tamara Colquhoun

          Licenced Immigration Advisor

          Tamara is a first generation Samoan New Zealander who grew up in Palmerston North.  She completed her Bachelor of Laws and Bachelor of Arts in Political Science at Victoria University.  She recently worked as an Immigration Officer for Immigration New Zealand.  Tamara’s husband comes from a farming background and they spent two years on a dairy farm in the Manawatu.  She is fully licensed by the Immigration Advisers Authority to provide immigration advice and works closely with the recruitment team assisting candidates and clients with immigration requirements.

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            Haley Sykes

            Recruitment Administrator

            Haley Sykes completed her Bachelor of Business majoring in Marketing through the Unitec Institute of Technology before joining Greenstone Global and Greenstone Recruitment.   Haley enjoys the recruitment environment and works closely with the recruitment team undertaking administrative support functions.