Our People | De Groot Technical Services 07 3390 8777


"A great combination of academic qualifications and hands on experience"


Judith DeGrootJudith DeGroot (B.Rur.Sc.) - Director and Consultant

  • As joint business owner, Judith strives for a high level of professional service to clients.
  • Extensive regulatory experience across many industry segments.
  • Knowledgeable of ever changing regulations and requirements.
  • Focus on relationships, assisting clients obtain regulatory approvals for their products so as to reach the market quickly and efficiently.
  • Emphasis on quality business systems and support for client records.
  • After working for a number of companies Judith started DeGroot Technical Services as an independent consulting business in 1993.



Gavin HallGavin Hall (B.Sc. Hons) - General Manager

  • Experienced biologist with a keen interest in biologically derived products.
  • Focus on creating regulatory solutions for the most difficult and interesting products.
  • Has held senior APVMA roles (Pesticides Program, Data Protection, Fees Review, Senior Evaluator).
  • Strong networks across industry.
  • Has a Bachelor of Science degree with Honours from Australian National University in Canberra.
  • Gavin has been with De Groot Technical Services since 2007.  



StellinaStellina Popplewell (Assoc.Dip.App.Sc.(ChemTech)) - Senior Consultant

  • Possesses a broad chemical knowledge.
  • Commercial involvement with chemical manufacturing industry.
  • In depth regulatory experience gained over 20 years in Australia and New Zealand.
  • Veterinary medicine and animal health expertise.
  • Hands on experience with TGA registrations for registrable and listable products.
  • Knowledgeable with NICNAS listing of chemicals and notifications.
  • Involvement with AQIS registrations for products in export meat establishments.
  • GHS/hazard classification speciality, label and safety data sheet compliance. 
  • Strong client focus.
  • Stellina is an Associate Member of the Royal Australian Chemical Institute Inc. 


changChang Li (B.Biotech and M.Sc.) - Consultant

  • Specialist in pesticide science, with extensive experience in researching various pesticide mechanisms at a molecular level.
  • Experience with regulatory processes in China, Australia and New Zealand.
  • Strong commitment to quality work.
  • Knowledgeable with broad range of submission types.
  • Worked as a consultant assisting companies in China and Australia.
  • With her Chinese background and language skills Chang is well placed to assist clients, notably Asian suppliers, in securing regulatory approvals and compliance in Australia.
  • 如果您有产品注册的任何需要,请联系我.


yasserDr. Yasser Sokeirik (B.Pharm, M.Sc., PhD) - Consultant

  • Very strong analytical and synthetic chemistry knowledge from across a range of disciplines.
  • Broad experience in R&D with multinational companies.
  • Involvement with discovery and development of novel mode of action pesticides with Sumitomo Chemicals in Japan.
  • With the Institute of Chemical Research (Kyoto) was involved with the design and synthesis of new chiral chemical compounds for the drug industry.
  • In the role of an APVMA external evaluator conducted scientific assessments relating to applications for approval of new active constituents and new manufacturing sites for existing active constituents


sharonDr. Sharon Gossage (B.Sc. Hons, M.Sc., PhD) - Consultant

  • Initial work experience as a molecular biologist and parasitologist on various infectious disease projects in the UK.
  • Joined the UK regulatory body, Chemical Regulations Directorate (CRD), with a role in the evaluation and authorisation of plant protection and biocides.  
  • Broad scientific  background.
  • Extensive UK and European regulatory knowledge.
  • Strong focus on submission quality that meets regulatory requirements.




EuniceEunice Wong (B.App.Sc. and M.Agr.St.) – Consultant

  • Plant protection background.
  • Involvement with nematodes and screening for resistance in sugarcane glasshouse and field trials.
  • Post registration compliance knowledge.
  • Great attention to detail and follow through.
  • Focus on project progress reports for clients.




daleneDalene Olivier (B.Bus.(Acc/Mktg)) – Finance and Administration Manager

  • Broad experience with various roles in Finance, Customer Service and Sales Support in a range of industry types.
  • Provides organisational and analytical skills to the team to ensure the financial and administrative aspects of the business are sound.
  • Adopts an "On-Time - First Time - Every-Time" approach to every task or assignment, to ensure the development and improvement of business processes.
  • Prides herself on delivering the best possible service to DeGroot Technical Services clients. 



RonRon DeGroot (B.App.Sc. Hons; B.Com.) – Business Manager

  • Successful career in the agricultural chemical and fertiliser industries in a wide range of senior management, commercial and technical roles.
  • Headed up the Technology and Development group at Crop Care Australasia.
  • Broad experience working with a range of biological products and IPM strategies.
  • Extensive international business experience, including export development.
  • Active industry leadership profile particularly with stewardship and quality systems with management roles at Agsafe, (agricultural chemical accreditation) and PestCert (pest management accreditation).
  • As joint business owner has specific responsibility for the assurance and support services to the consultancy team assisting clients achieve their goals.


Search our website


Latest News

  • 1
  • 2
  • 3
  • 4
  • 5