Meet The Executive Team Of Private Jet Services


Private Jet Services has put together an executive management team of experienced aviation professionals who work daily to ensure we deliver a superior experience to each of our clients. Learn more about our executives and how their leadership can help you meet all of your air travel needs.

exec team greg raiff

Greg Raiff is an esteemed influencer in the aviation industry and a consummate authority on commercial and private air transportation. As an accomplished entrepreneur, Greg has over 20 years’ experience at the helm of air transportation and services companies. He has been quoted in national publications including The Wall Street Journal, The Boston Globe, The Denver Post and Raiff is a contributor on regional news features covering the air travel industry.

His immersion into the aviation industry was galvanized with the success of his very first business, which was founded in his Middlebury College dorm room in 1989. The $7 million business, which managed spring break air transport for over 50,000 students, was subsequently acquired by TUI Travel PLC, a FTSE 100 leisure travel company listed on the London Stock Exchange (TT.L), with over 53,000 employees worldwide.

exec team michael horrisbergerMichael Horrisberger is a technology leader with over twenty years of experience building high performing organizations and managing complex processes and technologies.

As the CIO, Michael is responsible for developing and executing PJS’ technology strategy and overseeing all aspects of information technology, information security, data, and analytics. He also supports the growth of the business through the enhancement of IT- and analytics-related initiatives.

Prior to joining PJS, Michael served as a U.S. Navy A6-E Intruder Pilot with Attack Squadron VA196 for seven years and he held executive leadership roles with Emery Waterhouse and Unum in business development, operations, and IT management across financial services and distribution with a primary focus on enabling growth strategies.

Michael holds a Master of Business Administration from Stanford University Graduate School of Business and a Bachelor of Science from the U.S. Naval Academy. 

exec team will dentWill Dent is the Chief Marketing Officer at Elevate Aviation Group. In this role, he leads EAG’s Marketing Department as the company prepares for significant growth after it acquired Keystone Aviation in January 2022. Will has extensive experience in the aviation industry as an innovative, results-driven leader with expertise in utilizing technology to deliver value, provide direction, and support company goals. He has led the establishment of several high-performing teams in large organizations in addition to start-ups.

Prior to joining Elevate Aviation Group in June 2022, Will was the President and Chief Technical Officer of AeroParts Now. He also worked in a senior role at Gulfstream Aerospace for over 13 years. Before his experiences in private aviation, Will served for seven years in the U.S. Army as a Helicopter Crewchief. He holds a Federal Aviation Administration Airframe & Powerplant license.

Will is an alumnus of the University of Phoenix, where he received a Bachelor of Business Administration degree. He also earned a Master of Business Administration degree from the same university. In his spare time, he volunteers as a mentor and is a board member of Performance Initiatives, a non-profit organization that helps disadvantaged youth. With his wife and two children, Will resides in Savannah, Georgia.

exec team mike klemmMike Klemm is responsible for the PJS NHL Team Charter Program, the NCAA Team Charter Program, and all ACMI programs.

Mike began his aviation career in 1991 at Midwest (Express) Airlines, working his way through the ranks to eventually run the entire Charter Department, overseeing all sales and operations while specializing in professional and collegiate sports charters. During his tenure at Midwest he led the full season flight programs for six NHL clubs as well as ad-hoc flights for an additional 14 NHL clubs. He also led the flight programs for three U.S. Presidential candidates during the 2008 U.S. Presidential campaigns.

Mike grew up in Milwaukee, WI and is a graduate of the University of Wisconsin-Milwaukee.

exec team john oneillJohn O’Neill has been Vice President of Operations at Private Jet Services (PJS) since 2018. O’Neill has been instrumental in creating and promoting superior customer service at PJS.  

O’Neill, a New York native, is a graduate of the New York Institute of Technology. His operations career began in 1990 as a Senior Captain for Spirit Cruise. In 1999, John started his career in aviation as a founding team member of CitationAir (CitationShares). Participating as part of the executive team growing from a startup to a $500m Fractional and Jet Card operator with worldwide operations,100 plus aircraft, and 850 employees, John served as Senior Vice President of Operational Planning. Along the way, John held leadership roles in several departments including Crew and Aircraft Scheduling, Operations Research, Travel Services, Vendor Relations and Aircraft Logistics. John also participated on the Safety Management Committee.

“John is one of the finest aviation executives I have had the honor and pleasure to work with,” commented Private Jet Services CEO, Greg Raiff.

exec team tim murphyTim Murphy is a seasoned legal expert with extensive experience developing and closing domestic and international project finance and corporate transactions. He has worked with many multinational law firms based out of Washington, D.C., New York, Texas and Singapore, and has many years of successful first chair and litigation management experience with State and Federal trial and appeal courts and agencies. 

As General Counsel for Private Jet Services, Tim works closely with leadership and outside counsel to support all legal matters, including corporate organization, finance, contract negotiation, compliance, tax and regulatory analysis, employment law and litigation. 

Tim is an alumnus of the College of William & Mary Law School and Stony Brook University in New York. Tim also attended school in Stockholm, Sweden during a year abroad. Previously based in Virginia, Tim now resides in Portsmouth, New Hampshire.