Jacob Rheinstein

Jacob Rheinstein

Director of Operations & Strategy

Jacob is always at the top of his game. I can count on him to be prompt, accurate, thoughtful, and resourceful. It is a true pleasure having Greiner Consulting Group as a client, especially because of the work I do with Jacob.


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The impediment to action advances action. What stands in the way becomes the way.

Marcus Aurelius

Describe your role with the Greiner Consulting Group?

As the Operations Director, I wear many hats; combining the role of Controller, IT Specialist, HR Advisor, 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 and Adele 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 opportunistically, and strive to be a great 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 outer space.

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 Horace Mann School. For my college years, I left New York City for Emerson College in Boston. 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.