Since it was founded, in 1992 Omega Engineering d.o.o. works on conservation and rehabilitation of architectural heritage. All employees are experts in that field and the company has established cooperation towards institutions specialized in conservation, restoration and maintenance of cultural monuments.

The team worked on some of the most important cultural monuments in Croatia and Bosnia and Herzegovina. Among many designs and project realizations are: architectural surveys and rehabilitation of city blocks in the Old Town of Dubrovnik, included in UNESCO World Heritage list, (over 20000 m2); survey and documentation of the Old Town harbour of Dubrovnik; survey and documentation of Church of St. Blaise, Dubrovnik (18th ct.); survey, documentation and project of the Church of St. Savior in Vrlika (9th ct.); survey, documentation and project of the Church of St. Spirit, island of Šipan (16th ct.); survey, documentation and restoration project of the principal portal of the Dominican church in Dubrovnik (13-15th ct.); restoration project of the Revelin fortress, Korčula, island of Korčula (16th ct.); survey, documentation and project of the St. Dominic fortress, Dubrovnik (15th ct.); survey and documentation of the Church of St. Peter and Moses in Solin (11th ct.); survey, documentation, project and supervision of Tara and Halebija Towers at the Old Bridge in Mostar (15-18th ct.); supervision on the rehabilitation of the Old Bridge in Mostar (16th ct.), which, together with it's surroundings, was included in the UNESCO's World heritage list after it's reconstruction; survey and documentation of the archaeological site of Church of St. Mary in Bale, Istria; survey, documentation and reconstruction project of Orlando column in Dubrovnik (15th ct.); survey, documentation and reconstruction project of the Inner bridge at Ploče in Dubrovnik (15th ct.) with the pavement of St. Dominick's street; documentation of the archaeological research works at the site Crkvine, Cista; survey, documentation and reconstruction project of the Outer bridge at Ploče in Dubrovnik (15th ct.); survey, documentation and reconstruction project of Pile bridge in Dubrovniku (15th ct.); reconstruction project of a part of the ex-military building in Gruž for State archives in Dubrovnik; reconstruction project of Collective archives centre Korčula-Lastovo at Žrnovo, Korčula island; reconstruction project of Gymnasium building in Dubrovnik; presentation project for the archaeological site Spila in Nakovana, Pelješac peninsula; survey and reconstruction project of ethno-village Donja Nakovana, Pelješac peninsula; survey and reconstruction project of Lazareti in Dubrovnik (15th-16th ct.); survey and documentation of For fortress at Prevlaka (19th ct.), Konavle; archaeological and conservation research works and presentation project at the site of Požega old city centre; archaeological research at the site Zvijezda-Banska vrata in Karlovac; survey, reconstruction and presentation project for Hram Vavedenja Presvete Bogorodice, Plaški; survey and reconstruction project of Gorica castle in Pregrada, Hrvatsko Zagorje; survey and documentation of Zrinski castle in Čakovec; survey and presentation project of the archaeological site of Church Majka Božja Gorska at Lobor; project of the playground at Minčeta, Dubrovnik Old town; reconstruction project of St. Mary convent at Melita island (12th ct.), Mljet; regulation design of Posat at Ploče, Dubrovnik; reconstruction project of Isusović-Braichi palace in the Old Town, Dubrovnik.

The most important among employers from previous years were: Ministry of Culture, Republic of Croatia; Institute for the Restoration of Dubrovnik; Society of friends of Dubrovnik antiquities; Museum of Croatian archaeological monuments; Croatian Committee for cooperation with UNESCO; Korčula County; World Bank – PCU Mostar; State archives in Dubrovnik; City of Dubrovnik; Ministry of science, education and sport Republic of Croatia; City of Karlovac.