Senior Team

Rob Wrubel

Chief Executive Officer

Rob Wrubel has spent more than 25 years working as a technology and marketing entrepreneur in Silicon Valley, bringing to life multiple companies and brands. Most recently, Rob served as a strategic advisor to online education and consumer start-ups, including Fuse Universal, Generation Tux, and Common Sense Education. Prior to that, Rob spent eight years as an executive leader at Apollo Education Group, the country’s largest online education provider. At Apollo, he played multiple key roles as Chief Marketing Officer, Chief Product Officer, and Chief Innovation Officer. Before Apollo, Rob was the CEO of Aptimus, a public market online marketing platform company. Before Aptimus, he was the founding CEO of Yoga Works, a national yoga and alternative fitness company. Rob was the founding CEO of Ask Jeeves, a leading search engine and consumer online brand. Prior to that, Rob was the Chief Operating Officer at Knowledge Adventure, the country’s leading publisher of educational software. Rob has a bachelor’s degree in History from Yale University.

Kai Roemmelt

Chief Operating Officer

Dr. Kai Römmelt has 15 years of professional experience in strategy, M&A and change management. Before joining HotChalk, Kai spent more than 10 years with Bertelsmann in multiple roles across the US, Australia and Germany. He was part of the founding team of the Bertelsmann Education Group and served as Chairman of the Board of Directors for Alliant International University. Prior to his work with the Education Group he was responsible for the global integration of the world’s largest book publishers Penguin and Random House. Kai holds a MBA from the European Business School (Germany) and a Doctorate from the University of St. Gallen (Switzerland).

Michael Sullivan

Chief Marketing Officer

Michael Sullivan is an entrepreneurial, creative business professional with proven expertise in brand development, marketing strategy, experience design, and digital marketing. Most recently, he co-founded and led Chroma, a marketing and innovation consultancy that provided marketing transformation services to colleges, universities and education consortiums. Prior to that, Michael spent five years at Apollo Education Group, where he served as Senior Vice President of Brand and Media Services. Before his time at Apollo, he was Senior Vice President of Marketing & Product at Aptimus, an online marketing company. Michael’s agency experience began during the creation of the internet marketing economy, where he launched, incubated and led three successful digital marketing agencies, serving some of the world’s most recognizable brands. He also led global marketing for Pinnacle Microsystems and began his career at International Data Group (IDG) where his responsibilities scaled to include new product development. Michael has a bachelor’s degree in Business Administration from Bryant University.

Mark Zinselmeier

Chief Partnership and Development Officer

Mark Zinselmeier has more than 15 years of experience in operations, customer service and call center management. Prior to joining HotChalk, Mark managed the national rollout of the Discovery Education streaming video service, reaching more than 70,000 U.S. K-12 schools. Mark has a bachelor’s in Radio, TV and Film from the University of Missouri.

Mary Jane Pearson, Ph.D.

Chief Academic Officer

Mary Jane Pearson, Ph.D., has been involved in “educator education” for more than 30 years. Dr. Pearson’s unique credentials as a teacher educator include chairing the California Commission on Teacher Credentialing (CCTC), the largest educator licensing agency in the U.S. During her nine-year tenure as a commissioner, she co-authored the research on beginning teacher support and assessment that has become the worldwide standard for the support of new teachers. In addition, Dr. Pearson was appointed by the U.S. president to serve as the regional representative for the U.S. Department of Education. In recognition of her service to education, Dr. Pearson was named California Teacher Educator of the Year. Dr. Pearson earned her Ph.D. from the University of Kansas.

Alberto Chullen

Chief Financial Officer

Alberto Chullen joined HotChalk in 2016, bringing expertise in international corporate finance, controlling, M&A and venture capital. Prior to HotChalk, Alberto served as VP of Corporate Development and Director of Mergers and Acquisitions for Bertelsmann Education Group in U.S. and Bertelsmann in Germany, managing more than a dozen M&A transactions across Europe and U.S. in higher education, education services, music publishing, book publishing, and printing. Alberto holds a bachelor’s degree in Business Administration from Universidad San Ignacio de Loyola (Peru), a MSc. in Finance and Accounting from Leipzig Graduate School of Management (Germany), and a postgraduate degree in International Business from Grenoble Graduate School of Business (France).

Joe Patterson

Senior Vice President, Admissions

Joe Patterson has 20 years of experience in business development and contact center leadership in the higher education and pharmaceutical industries. Prior to joining HotChalk, Joe served as the Executive Director of Thunderbird Executive Education at Thunderbird School of Global Management. In his 12 years at Thunderbird, Joe led global student recruitment, was responsible for business development in North America, South America, and Asia, and founded Thunderbird Online, the school’s online certificate and custom corporate programs division which provided innovative online learning solutions to working professionals in over 100 countries. Joe’s work with Thunderbird and corporate clients such as Chevron, ExxonMobil, General Motors, the Red Cross, and UNICEF has taken him to more than 20 countries on four continents.

Before his time at Thunderbird, Joe led several large client support teams for both a start-up pharmaceutical marketing and technology firm and McKesson, where he managed cross-functional implementation teams to launch customer support programs for pharmaceutical companies such as Glaxo Smith Kline, Novartis, Amgen, Janssen, and AstraZeneca. Joe earned his bachelor’s in English from Arizona State University, holds a Global MBA from Thunderbird School of Global Management, and is an alum of Penn State University’s Institute for Emerging Leadership in Online Learning.

Todd Keithley

Vice President, Legal and Compliance

Todd Keithley has 20 years of professional experience in law and in publishing. He advises HotChalk in a number of areas, including compliance, contracts and licenses, employment matters, and day-to-day legal issues. Prior to HotChalk, he was a litigator at Patterson Belknap Webb & Tyler LLP, focusing on complex business disputes in a wide variety of contexts. Previously, he clerked for Judge Amalya Kearse of the U.S. Court of Appeals for the Second Circuit and U.S. District Judge Miriam Goldman Cedarbaum of the Southern District of New York. Todd holds a bachelor’s in English from Yale University and a J.D. from Columbia Law School, where he was the executive notes editor for the Columbia Law Review.

Board of Directors

HotChalk is led by a board of directors representing more than 100 years of combined experience in the technology, information, and education fields. This depth of knowledge and expertise guides us in our mission to help everyone, everywhere pursue their full academic potential.

Meet the Board