director development,director town planning building control,director joint venture projects,additional director infrastructure development,additional director town planning building control,additional director joint venture projects,additional director building roads,deputy director infrastructure development,deputy director town planning building control,deputy director building roads,additional director electric,deputy director xen plans,xen transportation engineering,xen contracts,deputy director xen civil,xen electric,axen technical coordination,axen plans,axen architect,axen structure design,axen transportation engineering design,axen contract,axen evaluation,axen civil,axen electric,axen mechanical design,material engineer me jobs in Defence Housing Authority DHA