O'Holleran Ventures and Consulting | 26 followers on LinkedIn. Investing in Tomorrow's Leaders. | O'Holleran Ventures is a venture capital firm that invests in early-stage software and technology startups. The firm is led by General Partner and Founder Dan O'Holleran and Limited Partner and Head of Technology Ryan Schaller, who have a combined 20 years of experience in Software and Technology. The firm provides its portfolio companies with capital, expertise, and access to a network of experienced entrepreneurs and investors.