About Us
David Mandrake, Managing Director of Guardian Security and Investigations, brings over three decades of expertise to the security and investigations industry in the United States and Australia, holding licenses in New South Wales and Queensland. As the President and Managing Director of Guardian Security and Investigations Pty Ltd, David leads security and investigations operations on a global scale, specializing in risk assessments, government investigations, and security consulting. Professional Experience: David’s extensive career includes key roles that highlight his broad skill set and dedication to the security profession: • Leadership in Security and Investigations: David has led multiple operations across Australia and the USA, offering specialized services in risk assessments, government investigations, and security consulting. His strategic oversight ensures that all projects meet the high standard of excellence expected in the security and investigations industry. • Global Legal Advocacy: With a focus on international humanitarian and human rights laws, David has managed legal advocacy efforts globally, supporting victims of human rights abuses. He has developed educational programs and led international collaborations to further humanitarian goals. • Legal Research and Documentation: Skilled in providing legal research and support services, David has handled complex legal documentation for international clients, ensuring compliance and efficiency across multiple jurisdictions. • International Humanitarian Efforts: David has represented various nonprofits before United Nations and other intergovernmental organisations, focusing on projects that enhance global peace and humanitarian efforts. His work in this area demonstrates his dedication to fostering a more just and peaceful world. Education and Credentials: David's educational background is extensive, featuring a Bachelor of Science in Criminal Justice and diplomas in various specialized fields including Paralegal Services, Crime and Justice Studies, Government Investigations, Security Risk Management, and Chaplaincy. He is also a Graduate Member of the Chartered Institute of Legal Executives (CILEx) in the United Kingdom. Licenses & Certifications: • Licensed Private Investigator and Security Professional in New South Wales and Queensland • Certified International Humanitarian Law Training Instructor - American Red Cross • Certificate of Completion in the Reid Technique of Interviewing and Interrogation • ASIC Mortgage and Finance Brokers Credit Representative’s Licence • NSW Commercial Agent Licence (Debt Collection, Repossession, and Service of Process) • ASIC Licensed Credit Representative (Finance Brokering) • ASIC Debt Management Services Licence (Debt Counselling and Advocacy Services) Professional Achievements: • Certified In-House Counsel through the Association of Corporate Counsel • Admitted to the International Criminal Court’s Professional Investigators List • Added to the roster of pre-approved candidates as an Amicus Curiae Investigator for the International Residual Mechanism for Criminal Tribunals (IRMCT) • Global Peace Ambassador - Completion of the Positive Peace Academy through the Institute of Economics and Peace • Author of "Abducted Dreams – What to do When Your Child is Missing" • American Red Cross Certified Intermediate International Humanitarian Law (IHL) Instructor • UN Human Rights Officer Training Programme - UNITAR Professional Affiliations: • International Bar Association • International Criminal Court Bar Association • American Bar Association • Association of Corporate Counsel (ACC) • Chartered Institute of Legal Executives (CILEx) • Law Society of England and Wales • Australian Institute of International Affairs • Diplomatic and Consular Officers, Retired and Bacon House Foundation (Washington DC) • Australian Security Industry Association • World Association of Detectives • National Writers Union (Journalist) David Mandrake’s diverse experience and commitment to justice, human rights, and security make him a notable leader in the security and investigations field. His broad range of skills and extensive background ensure that he is well-equipped to handle complex challenges and provide top-tier investigative and security services.
Our Private Security and Investigative Services
Guardian Security and Investigations is a trusted provider of private security and investigative services across Australia, and through our international network. We are dedicated to delivering customized investigative solutions that align with our clients' specific needs and objectives.
Commitment to Integrity and Professionalism
As your professional private detectives, we uphold a strong commitment to conducting our investigative services with utmost honesty, integrity, and professionalism. Our team of licensed private investigators brings extensive experience to the table, with each member specializing in complex investigations within their respective fields of expertise. We take great pride in offering a wide range of investigative services aimed at solving crimes and providing answers to your pressing questions.
Often, people believe that their actions can go unnoticed by others, which is why they choose to repeat the same mistakes. This is where GSI comes in! With our local knowledge and experience in knowing how to track criminals, we can search their location and conduct quick and thorough discreet enquiries related to your concerns. By doing so, we can provide you with evidence or peace of mind.
We have established a good reputation in closing cases by collecting evidence in the right manner. We always put our clients’ needs first. Most importantly, we work within the law to make sure that all our clients achieve the best legal and financial results.
Our Trusted Private Investigators
Our private investigators in Australia are fully licensed and insured. They are highly trained and skilled to conduct private security and investigative services. They have access to the latest in technology, to provide you with accurate information.
At Guardian Security and Investigations, our private investigators in Australia are fully licensed professionals. They undergo rigorous training to acquire the necessary skills and expertise to conduct comprehensive private security and investigative services. Equipped with cutting-edge technology, including drones, our investigators are dedicated to providing you with accurate and compelling evidence.
If you are looking for a lost family member, a friend, or a business partner, our missing person private investigators will come to your rescue. They will work closely with you to tailor a solution to meet or even exceed your needs and expectations.
Hire a Private Investigator
If you need the help of our skilled and experienced private detectives, do not hesitate to contact us at 02 8091 6826. Our staff will be happy to have a chat about your assignment. If you prefer the discretion of email, send your requirements or enquiries at info@guardianinvestigators.com.au. Rest assured, we will answer your emails promptly.
At Guardian Security and Investigations, we will do everything that we can to find the real answers to all your questions.
ABN: 43 615 424 130
NSW Master Security Licence No. 000103344
NSW Commerical Agent No. CAL00011738
QLD Security Providers Licence No. 4768168
Member of the World Association of Detectives (WAD)
Certified In-House Counsel through the Association of Corporate Counsel
NSW Master Security Licence No. 000103344
NSW Commerical Agent No. CAL00011738
QLD Security Providers Licence No. 4768168
Member of the World Association of Detectives (WAD)
Certified In-House Counsel through the Association of Corporate Counsel
NAVIGATION
CONTACT INFO
2, 1 Newspaper PlaceMaroocydore QLD 4558
19/103 George StreetParamatta NSW 2150
19/103 George StreetParamatta NSW 2150
Please email us to receive the quickest response to your questions and enquiries.
We do not have walk-in service available. In-person appointments must be scheduled in advance.