Check out our recent article on Generative AI uses cases in Logistics here, co-authored with Bain Capital Ventures

Operator Stack


We invest because we love it, & truly enjoy helping founders at the most pivotal moments in their lives.

We have 40+ years of collective operating experience across biz, product & tech at start-ups & top tier companies, with multiple exits.

Our philosophy is to help when founders need it - and no more. We know what it's like to operate because we do it every day. The pain points and challenges are familiar, and we're here to help as much or as little as required.



Matt Doka

CTO, SumUp NA; Co-Founder, Fivestars

Co-Founder & GP, Operator Stack

  • Scaled Fivestars from $0-$50M revenue
  • Built Fivestars payments platform (payfac) from scratch
  • Successful $317M exit to SumUp

Co-Founder & CTO Fivestars Sold to SumUp ($317M, Oct ‘21)

Building (0 → 1) / Tech Infrastructure / GTM

Raj Subbiah

Chief Product Officer, Uber Freight

Co-Founder & GP, Operator Stack

  • Helped grow Uber Freight bookings from $400M to $6B
  • Built & scaled Marketplaces at Yelp
  • Built the first large scale ML models at Bing relevance

Head of Product @ Uber Freight

Product, Data Science & Design

Daniel Kennedy

Head of Corporate Development, Yelp

Co-Founder & GP, Operator Stack

Head of Corp Dev @ Yelp

  • Helped grow Yelp from ~$550M → $1.3B revenue
  • Built and launched B2B component of Yelp Audiences business; 0→ $50M run rate
  • Closed over $20B in aggregate deal volume at J.P. Morgan + previous roles

Strategy, Partnerships, Finance, Fundraising, M&A, GTM