Our Leadership

Meet our leaders, board members, and advisors helping carry out our mission to change the way the world lives, works, and plays.

Alef Executives and Leadership

Our leaders bring the Alef vision to life and support our teams on this journey.

Steven Spencer

Steven Spencer

Chief Executive Officer

Meet Steven >

Jeff Tennery

Jeff Tennery

Chief Operating Officer


Meet Jeff >

Stephan Massalt

Stephan Massalt

SVP of Service Platform Operations

Ritesh Johar

Ritesh Johar

EVP of Engineering

Board Members

Our board is composed of mobility and technology executives with experience in disruptive markets. These advisors provide their expertise and strategic guidance for Alef’s continued growth.

Philip Erdoes


Philip Erdoes is the Founder and Chief Executive Officer at Bear Ventures LLC. As a serial entrepreneur with over 20 years of experience in developing new enterprises, Philip is an experienced member of various boards, and works closely with senior management to meet strategic and operational objectives. He has been involved in companies at various stages, including early-stage, growth, buyout, and distressed situations. As a principal, he has been active in various sectors, including technology, media, consumer, manufacturing, transportation / logistics and energy. Among other activities, he sits on the Dean’s Advisory Board of Harvard Business School. Philip holds a BS in Biology and Biomedicine from Oklahoma State University, a JD, with honors, from the University of Oklahoma, and an MBA from Harvard Business School.

Advisory Board

Chetan Sharma

CEO, Chetan Sharma Consulting

Petrina Steele

Global Lead, Connected Autonomous Vehicles & Smart Mobility, Equinix

Paul Palmieri

CEO and Co-Founder, Tradeswell

Danny Winokur

Executive Advisor

Sandia Bratt

Chief Product Officer

Ganesh Sundaram

Founder, Alef Edge

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