Since 2005 Jonathan has been gradually building up the company Zacaria Group which today owns and manages over 250,000 m2 of industrial warehousing in 6 cities around the country. The company plans over the next 18 months to increase its warehousing holdings by a further 100,000m2 in 3 additional cities. Besides Industrial warehousing, Zacaria group is also heavily involved in residential development and is currently in various phases of constructing over 440 apartments, and 320 villas in 4 locations in Romania, the majority of which however are in Bucharest. Zacaria Group is owned by the overseas investment arm of the Maltese company Alf Mizzi & Sons, which in 2015 celebrated 100 years of business.