Dennys has 12 years of progressive security experience, commencing with the Portuguese Marine Corps in 1995. Dennys was appointed as Head of Corporate Security for Companhia Industrial da Matola (CIM) in 2006, a position he held for 5 years.


In 2010, he was recruited to join G4Security where he managed the Armed Response and Special Operations sub-departments, including systems monitoring and personal security details.


Dennys founded Global Security Maputo (GSM) in 2012, providing secure transportation and executive protection services to the ever-increasing influx of business personnel.




Kallie served in the South African Police Service from 1987 to 2001. During this time he joined the SAPS Special Task Force, and later, the Presidential Protection Unit of Nelson Mandela. Kallie Obtained a National Diploma in Police Administration in 1993 and was promoted to the rank of Captain. He resigned from the SAPS after 14 years of service to join the private sector, and relocated to Maputo in 2003. Kallie took up the position of Head of Corporate Security and OHS for Vodacom Mozambique, a position he held for 12 years.

Kallie also obtained the NEBOSH International Graduate Certificate in Occupational Health and Safety during  brief tour to Baghdad with Sallyport Global. In 2018, Kallie joined the Global Security Maputo (GSM) team, partnering with Dennys.