Dan Hotels, an Israeli hotel company, has named Ronen Nissenbaum as CEO, effective Jan. 1, 2018. He was most recently vice president of luxury operations for Hilton Hotels in the Americas, including the Waldorf-Astoria and Conrad Hotels. He also served as managing director of the Waldorf-Astoria in New York and was CEO of the New York Plaza Group. He has also worked with the Sands, IHG and Forte hotel groups.

Hyatt Hotels has named Amy Weinberg as senior vice president, World of Hyatt loyalty program, overseeing strategy, partnerships, operations and management. Weinberg has more than 20 years of experience in loyalty and most recently spent two years as general manager for Groupdigital.com Corp. For 12 years she was senior vice president, consumer insights for Starwood Hotels and Resorts.

Rosewood Hotel Group named Karl Bieberach-Dielman as chief development officer, starting later this year. He will lead the global development and feasibility team to expand the footprint for the group’s three brands: Rosewood Hotels & Resorts; New World Hotels & Resorts; and Pentahotels. Prior to joining Rosewood, Bieberach-Dielman held a variety of senior roles in his 15 years at Starwood, including vice president, head of European development; vice president of feasibility and investment analysis for Europe, Africa and the Middle East; and director of acquisitions and development in EAME.

Aimbridge Hospitality, an independent hotel investment and management firm, named Ann Christenson as senior vice president of human resources. Previously, Christenson was chief people & culture officer for TMI Hospitality, where she oversaw HR processes and internal communications. Before that, she was executive vice president of human resources and support services for Sanford Health.

United Airlines has hired Jill Kaplan to serve as president, New York/New Jersey; she will join the airline in mid-November. This newly established role, the top leadership position for United in the region, will lead the promotion of the brand within the New York metropolitan area, home to the carrier’s hub at Newark Liberty International Airport. Kaplan will work with all integral departments, including government affairs, marketing, sales and other, as well as the local airport authority. Kaplan joins United from Crain’s New York Business, where she most recently served as vice president and publisher.

Mandarin Oriental Hotel Group has announced several senior management appointments. Christoph Mares has been promoted to COO, effective Jan. 1, 2018, responsible for global operations and based in the Hong Kong corporate office. He was previously executive vice president-operations director –  Europe, Middle East, Africa and India. Richard Baker, currently executive vice president-operations director – Asia, has been appointed group chief relationship officer, effective Jan. 1, 2018. In this role, he will lead the company’s portfolio management focus, bringing new projects to fruition and managing key owner and partner relationships. Paul Massot has been appointed group development director, responsible for driving the company’s global development strategy and development pipeline. He joined the company in 1990 and was most recently senior vice president of sales worldwide.