Jonathan RobertsJune 29, 2020 in Coach / Consultant / Insurance / Public Speaking Coaches / Georgia / North America / USA tagged LLC / Onyx Management Consulting by jroberts72 Displaying listings from all locations. Use the fields below to filter listings for a particular country, city, or state. Start by selecting the top most region, the other fields will be automatically updated to show available locations. Use the Clear Filter button if you want to start over. Select a Continent*Select a RegionNorth America Select a Country*No Regions available Select LocaleNo Regions available Jonathan Roberts President ONYX MANAGEMENT CONSULTING, LLC Jonathan Roberts 404-825-1213 Onyx Management Consulting, LLC is a business consulting and executive coaching firm. We focus on improving organizational processes and developing skills of leaders.