Jacob Rheinstein
Director of People & Operations
"The impediment to action advances action. What stands in the way becomes the way."
Describe your role with Greiner Consulting Group?
As the Director of People and Operations, I wear many hats; combining the role of HR Advisor, Controller, IT Specialist, Services Provider, Client & Vendor Relationship Manager, and all around problem-solver. With our offices spread across the country, and our clients positioned around the world, I work to ensure that everything runs smoothly so that our clients receive the services they need, when they need it.
What drew you to Greiner Consulting?
After I graduated from college, Jennifer kindly offered their time to help guide me on my career search. Their guidance gave me the confidence I needed to secure a successful job and the experience to later work effectively together.
What makes you good at what you do?
I enjoy interacting with all different types of people, view problems holistically and opportunistically, and strive to be a highly attuned listener.
Where did you start your career?
I began my career leading marketing and UX for start ups and was most recently at a WSJ featured company aiming to be the first sports organization in zero gravity.
What motivates you? Inspires you?
I’m motivated by complex and challenging problems and enjoy providing advice and assistance to help others unpack complicated issues. My volunteer work as a financial mentor, coupled with my training as a coach with Co-Active, one of the country's oldest coaching organizations, have been two great sources of motivation and fulfillment. I’m also inspired by film, traveling, the energy of New York, my family, and by passionate people who make it their life’s work to be experts in their field and teach others.
Where did you spend your school days?
I grew up in Manhattan and went to the Horace Mann School. For my college years, I traded New York City for Boston, where I completed my B.S. at Emerson College. After which, I returned to New York, where I received an Executive MBA from NYU Stern School of Business.
When you are not at work, what do you like to do? How do you spend some of your downtime?
Staying active is very important to me, whether its running, biking, swimming...if it gets the blood pumping, count me in. Cooking has also become a hobby of mine. Several years ago, I did a kitchen internship with Chef David Waltuck, of Chanterelle and Élan, which taught me about efficiency and esprit de corps. I've found that cooking together is one of the greatest ways to share authentically and celebrate life.

Our Team
Jennifer Greiner
President & Founder
Carla Levinson, esq.
Consulting Partner, Coaching & Transition Services
Eve Balick
Director, Coaching & Transition Services
Kim Young
Consulting Partner, Coaching & Transition Services
Erin Scherzer
Director, Coaching & Transition Services
AnnJoan Hyman
Consulting Partner, Executive Presence, Speech and Presentation Services
Mo Chanmugham
Consulting Partner, Coaching & Transition Services
Kate Edwards
Consulting Partner, Coaching & Business Services
Jacob Rheinstein
Director of People & Operations
Dolma Sherpa
Operations Coordinator

