James O'Brien
Business Strategy Consultant
McKinsey alum and startup advisor with 15 years in management consulting. I help founders and executives make critical business decisions with confidence. Specialties include go-to-market strategy, competitive positioning, and investor pitch preparation.
About James O'Brien
James O'Brien is a business strategy consultant based in New York City with 15 years of experience in management consulting, including a tenure at McKinsey & Company. He advises founders, executives, and investors on go-to-market strategy, competitive positioning, financial modeling, and fundraising preparation. James has helped startups raise over $200 million in combined funding and has advised C-suite leaders at Fortune 500 companies on strategic pivots and market expansion.
Skills & expertise
- Business Strategy
- Market Analysis
- Financial Modeling
- Fundraising
Client testimonials
“James prepared us for our Series B raise and the results speak volumes: we closed our round at 2.5x our initial target valuation. His financial models were rigorous and his investor pitch narrative was compelling. He was instrumental in our success.”
Amanda Foster · CEO, Series B Startup · 5/5
“James advised three of our portfolio companies and each one achieved significant strategic milestones within six months of engagement. His ability to cut through complexity and identify the highest-impact actions is remarkable. A truly exceptional strategist.”
Robert Stein · Partner, Horizon Ventures · 5/5
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