In early 2023, Mac Liu noticed a pattern. Former colleagues, early-stage contractors, even billion-dollar enterprises were all hitting the same wall: federal proposal development was broken. The tools hadn’t changed in a decade, timelines were accelerating, and the pressure to do more with less was mounting across the board.
Within months, Liu had launched Vultron, a San Francisco-based startup focused on automating one of the most cumbersome and high-stakes processes in government contracting. This week, the company raised a $17 million Series A led by Greycroft, with participation from Craft Ventures, Long Journey Ventures, and South Park Commons, bringing its total funding to $22 million.
The market is paying attention. “Three shifts converged to make right now the right moment for Vultron,” Liu told AIM Media House. “Agencies are issuing more solicitations with faster timelines. Contractors can’t keep up using manual, decade-old processes. And general-purpose AI models are now powerful enough to serve as the foundation for domain-specific AI systems.”



