Consultants
Rob Hotston
Canada
Rob Hotston joined OSACO in 2018 after more than forty years as both an investigator and investigations trainer.
Andrée Fayçalline Thes
Côte d'Ivoire
Lawyer, gender expert, and specialist in Safeguarding/Protection, Andrée Fayçalline Thes has more than ten years' experience in promoting gender equality and defending human rights.
Layal Ayass
USA
Layal joined OSACO in 2020. She has spent more than ten years leading investigations around the globe, specifically in the Middle East, Africa, Asia, and Europe. Layal is bilingual (English and Arabic).
Dave Davis
France
Based in France, Dave is an experienced international investigator who has worked both full-time and as a consultant with multiple UN Agencies and INGOs.
Sophia Guirguis
France
Based in France, Sophia brings 15 years of experience in the private and humanitarian sectors to her work with OSACO. Sophia has extensive experience in risk management, and an advanced knowledge of the international aid system’s governance, functioning, and challenges.
Laetitia Goli
Côte d'Ivoire
Laetitia Goli is a lawyer, specialising in human rights. She has been a feminist and activist in Côte d'Ivoire for nearly a decade. Laetitia works in partnership with Ivorian civil society organisations and international organisations on issues relating to the rights of women and girls.
Shelley Nisbet
New Zealand
Shelley Nisbet joined OSACO Group in October 2023. Since then, she has been involved in numerous investigations involving allegations of SEAH (sexual exploitation, abuse and harassment). She has also undertaken due diligence investigations pertaining to global companies and high-profile persons of interest.
James Spratt
USA
James is a highly skilled investigator and manager with more than 25 years’ experience conducting internal oversight, compliance, and fraud investigations around the world.
Sarah Andruchow
Australia
A qualified and experienced criminologist, Sarah possesses a unique depth of experience and insight drawn from almost 20 years working in criminal justice, investigations, policy and programmes.
Gavin Nichols
New Zealand
During over 20 years in the New Zealand Police, Gavin spent a significant amount of time investigating serious crime, including managing staff and overseeing serious crime investigations.
Craig Gilbert
New Zealand
Craig has worked with OSACO Group as an Investigator and Training Facilitator since 2020. His capability is underpinned by extensive experience including workplace, administrative and criminal investigation, operational/critical incident leadership, security and emergency management and adult training facilitation & design.
Delphine Kips
Belgium
With over twenty years of experience in the legal, humanitarian, and protection fields, Delphine is a specialist in managing complex and sensitive situations.
Jennifer Calmelat
France
Jennifer is a multilingual investigation consultant with over eight years of experience working with international organisations (ICRC, MSF) and UN agencies (UNFPA, UNICEF). She specialises in PSEAH investigations, fraud and corruption case management, and humanitarian project co-ordination.
Consultant Directory
Peter Foley – Ireland
Mick Symons – Australia
Mayara Freitas – Kenya
Isabella Hjorth-Falsted – Denmark
Frederic Anderson – Côte d'Ivoire