John Callahan Email & Phone Number
Strategic Growth Officer @ GDSI
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John Callahan Location
- Miami, FL, US
John Callahan Work
- Executive Director | Board Member @ (January 2026 - Present)
- Board Member | Advisor @ (January 2023 - Present)
- Strategic Growth Officer @ (September 2025 - Present)
- VMS Mentor @ (January 2024 - Present)
- Strategic Growth Advisor, Mentor, Coach @ Various Start-ups & Scale-Ups (January 2023 - Present)
- GTM Advisor and Interim Head of Sales @ (July 2025 - April 2026)
John Callahan Education
- Vista Equity Partners
Vista Equity Partners High Potential Leadership Program
2011-2012 - University of Michigan
MSEng (NAME, Engineering)
1990-1991 - University of Michigan
BSEng (NAME, Engineering)
1986-1991
John Callahan Skills
- Advisory Boards
- Analytical Skills
- Board Governance
- Board of Directors
- Business Advising
- Business Alliances
- Business Development
- Business Growth Strategies
- Business Intelligence
- Business Strategy
- CRM
- Cloud Computing
- Coaching & Mentoring
- Communication
- Consulting
- Customer Retention
- Direct Sales
- Enterprise Software
- Executive Management
- Finance
- GTM
- Go-to-Market Strategy
- Growth Strategies
- Integration
- Leadership
- Management
- Mentoring
- Mergers
- Mergers & Acquisitions
- Mergers & Acquisitions (M&A)
- Negotiation
- New Business Development
- Problem Solving
- Process Improvement
- Product Management
- Product Marketing
- Professional Services
- Project Oversight
- Revenue & Profit Growth
- SaaS
- Sales
- Sales Management
- Sales Operations
- Sales Processes
- Salesforce.com
- Scale
- Software Industry
- Solution Selling
- Start-ups
- Strategic Marketing Management
- Strategic Partnerships
- Strategy
- Thinking Skills
- Start Ups
- Customer Service
- Marketing
- Go to Market Strategy
- Trading
- Marketing Strategy
- Microsoft Office
- Mergers and Acquisitions
John Callahan Summary
- John Callahan, based in Miami, FL, US, is currently a Strategic Growth Officer at GDSI. John Callahan brings experience from previous roles at PentAlpha Global, RIHub and Various Start-ups & Scale-Ups. John Callahan holds a 2011 - 2012 Vista Equity Partners High Potential Leadership Program @ Vista Equity Partners. With a robust skill set that includes Advisory Boards, Analytical Skills, Board Governance, Board of Directors, Business Advising and more. John Callahan has 4 emails and 4 mobile phone numbers on RocketReach.
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