botswana exco member profiles

Executive Committee Profiles


Barnabas Mavuma

Barnabas Mavuma - Managing Director
Mr. Barnabas Mavuma is the Managing Director and has the overall oversight of the divisions, structures and functions in Gaborone and the three branches; Francistown, Selebi Phikwe and Maun in addition to his Principal Officer role.Barnabas has a Bed (Science) degree and professionally is a Fellow of the Insurance Institute of South Africa (FIISA). He has undergone the International Executive Development Programme through WITS University and London Business School (IEDP).  Barnabas sits in the Board of the Insurance Council Of Botswana (ICB) representing the Intermediaries Sector. He has 22 years of insurance experience and is technically astute in the risk advisory and management arenas.

Rowesai Mosarwe

Rowesai Mosarwe - Finance Director
Mrs. Rowesai Mosarwe is a Chartered Certified Accountant with over 12 years of experience in the financial management and reporting. She holds a BA degree in Accounting and is a Fellow (FCCA) member of the Association of Chartered Certified Accountants (ACCA). She holds a Certificate of Proficiency and is an Associate member of the Botswana Institute of Chartered Accountants (BICA). Rowesai started her career as an auditor with Deloitte and Touche, where she worked for two years before joining Aon Botswana. In her current position as Finance Director, she is responsible for the developing and evaluating the strategic financial objectives of the company, managing the company’s exposure to risk and maintenance of appropriate internal controls and procedures.

Alexio Dzidzwa

Alexio Dzidzwa - Director AH
Mr. Alexio joined Aon in May 1999 in Zimbabwe as a Divisional Director.  Prior to joining Aon, he was employed by Old Mutual Insurance Company in various roles in the technical and actuarial division. He has various qualifications and extensive experience spanning more than twenty years in the life business. He has attended workshops and seminars world over on retirement funding, bancassurance and group risk benefits. 

Michaelson Chonyera

Michaelson Chonyera - Technical Director
Mr. Michaelson Chonyera joined Aon in 2005 from AIG where he had worked for 15 years. He is a qualified Chartered Insurer, a Fellow of the Chartered Insurance Institute of South Africa (FIISA) and also holds A Master of Business Administration Degree(MBA). His 23 years’ experience gained in management and senior management of international short term insurance companies brings vast experience in all short term products. He was Chairman of the Insurance Council of Zimbabwe Fire Bureau Technical Committee which managed various industry short term technical sub-committees for 3 years. Michaelson brings to the team a wealth of experience in the full scope and breadth of insurance and reinsurance and insurance strategy for large corporates and tertiary institutions.

Bryn Williams

Bryn Williams - Chief Commercial Officer
Mr. Bryn Williams has 24 years of extensive Insurance experience both with Aon Zimbabwe and Aon Botswana and has been working in the Botswana Insurance Market since 2006, specializing in the Mining and Energy Sector and Pan Africa Insurance programmes. He has a Certificate of Insurance through the Insurance Institute of the UK, and various Management Certificates achieved within Aon. In addition to his mining expertise, he is also the Chief Operations Officer for Aon Botswana focusing on Compliance, Sales, Internal Audit  and the Aon Client Promise facility and is also the Botswana representative for the Aon Global Client Network accounts .

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