Mark Bieler has been a Phase Change board member since June 2009.
He is the President of Mark Bieler Associates Inc., a management consulting firm for private and public sector organizations on strategic human resources and organization development. His clients have included The Westfield Group, Morgan Stanley Retail, Ogilvy & Mather, Mercantile Trust, and the CIA.
Mark is also Chairman of the Edwin Gould Foundation, an incubator for social entrepreneurs and education initiatives.
Previously, he was Director of Human Resources for Bankers Trust Company, and Executive Vice President of the parent organization, Bankers Trust Corp. He had human resources responsibilities for the Banking Operations Group and the international, U.S., and world corporate banking units.
Steve Bucuvalas founded Phase Change in 2005. He is the Founder, CEO, and Chairman of the Board of Directors.
Steve is the Chief Inventor of Phase Change's software digitization. He describes himself as a cruise missile aimed at realizing a quantum leap in software productivity, or sometimes, light-heartedly, as the Dr. Emmett Brown of artificial intelligence (AI) in software.
He graduated from Harvard University in 1977 with a focus on evolutionary biology and began his software career the same year as a Bank of Boston assembly language programmer.
In his early career, he led corporate advance technology groups initially working on the development of ATM networks, specialized database management systems, and MVS-exploit identification. He developed Prolog‐based productivity tools for business analysts and one of the first assembly-language ATM systems in New England. As he became more interested in artificial intelligence (AI), he ran an AI group focused on developing expert systems for financial services institutions.
During his corporate career, Steve served in multiple executive positions including Senior Vice President, Technology, for the Bank of New England; and Vice President of Advanced Technology and Architecture for Prudential Home Mortgage.
In the mid-1990's he transitioned out of large corporations into creating his own innovation-focused organizations, continuing his emphasis on creating practical results using theories from computer science and AI.
Steve founded eoTek LLC in 1996 to develop Internet-based software solutions for the mortgage, financial services, and communications industries. At one point, eoTek had 80 employees and contractors serving clients such as Chase Mortgage, Banc One, and MCI/WorldCom.
In 2000, he sold eoTek to Nexstar Financial Corp., a portfolio company of Kohlberg Kravis Roberts & Co (KKR). He joined Nexstar after the acquisition as its Chief Technology Officer before founding Phase Change Software in 2005. Nexstar was later acquired by MBNA (now Bank of America).
Steve is an incessant innovator, serial entrepreneur, and self-taught polymath. He is a man who loves theory and is driven to see its power generate impactful results. He brings an interdisciplinary perspective to solving the software digitization problem. Steve often explains solutions to large issues by combining computation theory, program analysis, mathematical logic, cognitive science, neuroscience, and human evolution.
Melvin Yellin has been a Phase Change Board Member since 2019. He also served as a Board Member from 2008 to 2014, and an Advisor from 2014 to 2017.
He is a founder and an officer of Acreage Holdings, a vertically integrated Cannabis company licensed in 21 states in the United States. Acreage went public in 2018 and is currently trading on the Canadian Stock Exchange and other exchanges.
Melvin was previously a Partner at Tandem Global Partners, a globally focused money management company and High Street Capital, a venture capital company in New York.
He spent the bulk of his career at Bankers Trust Company, where he was a Partner, Executive Vice President, and General Counsel when it merged with Deutsche Bank in June 1999.
During his career, he acted as chairman and speaker for numerous business organization programs, including those run by the Conference Board, National Association of Corporate Directors (NACD), Columbia University Business School, and University of Wisconsin School of Business.
Gary Brach has been the President of Phase Change since October 2016, and a Board Member since April 2016. He is focused on introducing Phase Change to the market.
His background is in the software industry with over 25 years of experience primarily as a software entrepreneur in the storage and insurance industries.
He was formerly a Director at Intuit Inc. after selling Prestwick Services LLC, the leading premium pay-as-you-go billing platform, to Intuit in 2013.
Before joining Prestwick, Gary was the CEO of AgencyPort Software, the leading provider of agent portal technology for the property and casualty insurance industry. AgencyPort was acquired by The Sword Group in 2009 and is now owned by Accenture Inc.
He was the Cofounder and President of Smart Storage Inc., the first company to commercialize CD-recording and archival storage virtualization software. Smart Storage was sold to OTG Software in 2001 and is now part of Dell Inc.
Howard Culang has been a Phase Change Board Member since July 2008.
He served as President of Laurel Corp., a financial services firm, from January 1996 through December 2011. He was a Managing Member of JH Capital Management LLC, a private equity fund management company, from July 1998 to December 2010, and Cognitive Capital Management LLC, a management company for a fund of hedge funds, from April 2001 to December 2005.
In the past, he served as Vice Chairman of Residential Services Corp. of Prudential America, the holding company for Prudential Home Mortgage Lender's Service Inc., and Prudential Real Estate Affiliates.
Howard was also a Managing Director and Executive Committee Member of the Prudential Home Mortgage Company, where he worked from November 1985 to December 2005.
During his carrer he has held a number of senior management positions with Citibank NA, including Senior Credit Officer, and served as a Member of the Smart Storage Inc. Board of Directors until it was acquired by OTG Software in 2001. Howard has been a Director of Radian Group Inc. since June 1999, where he serves as Chairman of the Credit Committee.
Chairman of the Board
Don Peskin is the Chairman of the Phase Change Board of Directors. He has been a Phase Change Board Member since November 2007.
Don has more than 25 years of Wall Street and investment experience, most notably as a Managing Director and Principal at Donaldson, Lufkin & Jenrette, which he left in September 1997 to pursue private investment opportunities in finance, technology, and related industries. He is the Founder and President of Short Hills Capital LLC, a privately held investment company.
In addition to his principal investment activities, Don is also a Managing Member of Chatham Hills Development LLC, a real-estate development firm, and recently served as a Managing Member of Cognitive Capital Management, which was the General Partner of the Cognitive Strategic Fund, a hedge fund of funds.
He also served as a Member of the Ballard Petroleum LLC Board of Directors from 1997 to 2001, when the company was acquired by Alberta Energy Corp.
Don was previously a Member of the Entrepreneurship@Cornell Advisory Council.
Roger Bamford has been a Phase Change Advisor since 2020.
He spent 30 years at Oracle where he was the Principal Architect for the eponymous flagship database. He modernized the query processor for Version 5, led the design and implementation of the rewrite of the bottom half of Oracle for Version 6, help specify and design PL/SQL and other key features for Version 7, then invented the core algorithms that made Oracle RAC possible and led the design and implementation of RAC through the next three releases. After that, he ran advanced technology groups until he left in 2014.
Since then, Roger has been a Distinguished Architect at MongoDB, helping to specify and design industrial-strength commercial features for MongoDB's wildly successful open source database.
Before Oracle, he was at IBM Research and IBM Office Products Advanced Technology, where he implemented compilers for the Series 1 and Intel 8086, and an assembler and linker for the latter, an entity-relationship database, and a document filing and retrieval system. Roger earned a BSCS from MIT and an MSEE from Stanford.
Steve Yatko has been a Phase Change Advisor since 2017.
He is the founder and CEO of Oktay Technology, a boutique consulting firm for large-scale financial and analytic trading systems. Steve has over 20 years of experience with advanced enterprise IT systems and technology.
Before founding Oktay, Steve led mission-critical development initiatives at Credit Suisse as Managing Director and Global Head of IT Research & Development, Head of Global Core Technologies, and CTO of Mission Critical Systems. He cofounded DynamicOps, a Credit Suisse spinout that provided cloud automation solutions. DynamicOps was acquired by VMWare in 2012.
Steve is also an Industry Advisor at Starr Investment Holdings, a multi-billion dollar New York-based investment advising firm; Chief Technology Advisor at Care Finder Total Care; Cofounder of AcordIQ; and Founder of Renascence Development.
Paul Walker has been a Phase Change Advisor since 2017.
He is a Brooklyn-based technologist and philanthropist. Paul retired as a partner from Goldman Sachs in 2015, where he co-headed the firm's technology division and held roles in risk management and technology. He now advises companies and investors in artificial intelligence (AI) and FinTech, a umbrella term used to describe technologies and companies that apply tech innovations to the banking and investment industries.
Paul spends his philanthropic energies working with organizations that provide opportunity and social capital to young adults through access to education, science, and critical reasoning guidance. He holds a Ph.D. in Physics from the University of Illinois and a B.A. in Physics from Cornell University.