Meet our Leadership team
Meet our leadership team
Chief Executive Officer
Greg has served on the Bigleaf Networks' board of directors since 2020. He has a consistent track record scaling businesses and creating enterprise value through revenue growth, operational performance, and strategic acquisitions. Greg’s technology leadership career spans more than 25 years, where he has led multiple companies from start up to over $100 million in annual revenue. Prior to Bigleaf, Greg served as COO at HungerRush, a national leader in hospitality software. Prior to HungerRush, Greg spent eight years as EVP of Sales at Alert Logic, where he led sales, marketing, and other key area of the business.
Mark A. Dirsa
Chief Financial Officer
Mark is a technology veteran, with more than two decades of experience as a financial leader in the industry. Prior to Bigleaf, Mark served as CFO of Garten, CFO of Vendini, CFO of Mobile Complete, CFO of Alexa and in various other finance roles for Keynote Systems. He has negotiated multi-million deals for over 50 diverse domestic and international financings with high-tech companies totaling over $2 billion including sales to Amazon and Keynote Systems. Mark is an avid road and trail runner, completing the NYC Marathon an incredible 15 times.
Chief Marketing Officer
Lori has nearly 20 years of experience in creating innovative digital marketing strategies for B2B tech companies. Prior to joining Bigleaf, she led Marketing for Punchh, the leading digital loyalty platform for restaurants and retailers. As a result of rapid growth and accelerated brand equity, Punchh was acquired in 2021 for $500M by PAR Technology, where Lori went on to lead marketing for the PAR portfolio of solutions. She has spent most of her career in the unified communications and customer experience industries, leading and scaling marketing strategy for tech innovators like Talkdesk, Vonage, and Genesys.
Chief Product Officer
David Idle joins Bigleaf from Verizon, where he was the Chief Product Officer and Executive Director for SMB, managing the commercialization of 4G and 5G technologies in the small business and mid-market segments. In a dual role, Dave was also general manager of Yahoo Small Business until its sale in 2021. Dave previously held leadership positions at Web.com, XO Communications, and Sprint, where he drove profitable revenue growth through the development of new products and sales strategies.
Chief Sales Officer
Steve Braverman was appointed as Chief Sales Officer following his long-term involvement with Bigleaf as an investor and advisor. With his decades of experience in telecommunications and broadband services, Steve will support the company’s mission of providing reliable, high-performance internet connectivity. Before taking on the CSO role at Bigleaf, Steve founded X4 Advisors, a Chicago-based consulting group that focuses on sales, mergers and acquisitions, go-to-market planning, distribution, and other revenue growth solutions. Steve is a veteran of the telecommunications industry and founder of Telelink and Coeo Solutions as well as X4.
SVP of Operations
John joined Bigleaf in 2015 as VP of Partner Sales and led Bigleaf’s initial channel strategy and sales team growth. In 2021, John was named VP of Technical Support, and he now serves as VP of Operations. Before Bigleaf, John held a variety of leadership positions in sales and operations at several telecom companies, including Level 3, Comcast, and Qwest Communications. John is a licensed attorney with a J.D. from the Northwestern School of Law at Lewis and Clark College.
SVP of Transformation
Tim is an attorney and consultant who specializes in positioning companies for growth and strategic transformation in the IT and telecom industries. Tim’s career highlights include his tenure as VP and Assistant General Counsel at Sungard Availability Services, a global IT services company. Tim steered the company’s software business from a legacy, on-premises model to a modern SaaS platform and led the negotiation and sale of that division to a private equity concern. Tim holds a J.D from the University of Colorado Law School. When he’s not working, Tim can be found skiing, biking and backpacking in the Rockies.
VP of Engineering
Before joining Bigleaf, Dave led several teams on the development of embedded, application, and web software products at L3Harris Technologies. Dave holds a B.S. in computer and systems engineering from Rensselaer Polytechnic Institute and an M.S. in software engineering from the Rochester Institute of Technology.
VP of Sales Operations
Tam brings a wealth of experience and proven track record of driving success in sales management, operations, engineering, and channel strategy. With a diverse background encompassing security, SaaS, managed services, and startups, Tam is a visionary leader who has consistently delivered tangible results. His exceptional ability to foster high-performing teams through empowerment and collaboration, coupled with his expertise in creating efficient systems and processes, propels every organization he is a part of forward. In his free time, Tam enjoys keeping up with technology news, podcasts of all genres, and traveling with his family.