Who we are
Vantive Consulting is a high-performing advisory organisation which is made up of
a team of best-in-class business experts.
We provide Actionable Advice to achieve business goals.
Vantive Consulting LLC

Jack K. Dulberger, Co-Founder
Jack brings 35 years of management and legal experience to Vantive, which he started up in 2020 to meet the needs of small and medium sized businesses and startups.
Earned a JD from American University and an MBA from Harvard Business School. Began his career as an Internal Consultant for the US Court System where he made numerous recommendations leading to more efficient operations. Performed marketing and strategic planning for IBM, Information Resources Inc., Prime Computer, and other technology leaders.
Served overseas as a Foreign Service Officer, eventually moving into global intelligence analysis. Also performed international financial programs work for US Commerce Department.
Jack has two sons and, recently, a grandson.

Ion Pantalon, Co-Founder
An entrepreneur at heart, Ion brings over 15 years of experience leading clients through complex technology transformation programs, enabling enterprise-level technology operations for software development, software maintenance, cloud technologies, AI, and production operations. To tackle these advanced challenges, Ion excels at building high-performing agile teams that focus on rapidly delivering value for the client.
Ion’s career in the industry started in England where he received his degree in Computer Science from a top university.
Ion loves to use technology to solve real business problems, from ideation to delivery. Ion gained hands-on experience in product management, software development, and enterprise software delivery in working across the US and Europe. He has performed as project manager, functional team lead, deployment and testing lead, and post-production lead on system implementations.
He has developed pioneering implementation strategies that improve business value realization, reduce timelines and cost, manage risk and maximize efficiencies within organizations.
Vantive Team

Michael J. Doyle
Mr. Doyle is a senior-level financial services executive with 30 years of commercial banking experience.
He has demonstrated abilities in executive leadership, deep knowledge of technical banking processes, and an impressive record of building relationships between businesses and commercial banking institutions.
He was the Executive Vice President and Chief Credit Officer of U.S. Bancorp (NYSE: USB), the 6th largest commercial bank in the US. U.S. Bancorp operates 2,500 banking offices to provide banking, brokerage, insurance, investment, mortgage, trust and payment services.
His areas of expertise include:
- Capital Structure and Financial advisory
- Credit process evaluation and improvement
- Lender/borrower negotiations
- Financial restructuring
Most recently, Mr. Doyle has served as the President of Credit Risk Advisers, LLC, a professional services firm that provides financial services consulting to financial institutions as well as borrowers. He founded the firm after leaving U.S. Bancorp in 2007, where his most recent position was as the Executive Vice President and Chief Credit Officer. Prior to joining U.S. Bancorp, Mr. Doyle held positions with PNC Bank and Huntington Bank in Cincinnati, Ohio, and with Texas Commerce Bank, Mellon Bank and Irving Trust Company in Dallas, Texas.

Mason Tiffin
Mason founded Harbinger Analytics to provide quick, actionable insights in an industry flooded with fancy graphics and models that yield little business use. Mason’s approach to data analytics is to develop comprehensive solutions that address all business requirements.
Mason did not have a traditional start in data analytics. He found his calling in data analytics through solving problems as a business analyst at a medium-sized business. In this role, he honed a craft of digging deep into the unique issues businesses face today and developing intuitive solutions that yield useful results that drive efficiency to maximize profit and minimize risk.
The age-old question is where Mason developed his passion for data analytics. Mason enjoyed the challenge of creating a data analytics team and leading and developing initiatives to investigate these questions and provide hard data to back up business decisions. Through lived experience, Mason understands how to start scalable data analytics initiatives from scratch and develop best practices for businesses to gain accurate insights into streamlining operations.
As both an employee of a medium-sized business and the founder of a small business himself, Mason understands what Americas’ small and medium businesses truly seek through data analytics.

Andrew Persaud
Andrew has worked in the Website, Marketing, Media, and Branding space for over 10 years. He has worked with a large variety of clients, including small businesses, non-profits, associations, and corporations. He has helped scale Web Development teams, build client brands, form and/or reform their Digital Presence, and increase audience interaction and conversion. He is passionate about building brands, marketing, and videography.
Andrew enjoys spending time with his wife Aley, family, and friends. He can frequently be found behind the grill, working on his project car, or working on a home renovation project.