"Big league" is the best way to describe Sofia’s off-the-charts dedication. She’s up-levelled our game beyond what we thought possible.Milan Daniels,
Co-Founder of Otrium
Sofia is an early-stage and growth investor at Index Ventures based in San Francisco, where she backs founders building category-defining companies in SaaS, AI, financial services, and gaming.
Since joining Index in 2018, Sofia has led investments across Europe and the US. She serves on the boards or works with companies including Dream Games, RevenueCat, Cradle, Atlar, Printify, and others.
A former soccer player, Sofia is naturally drawn to founders with an athlete’s mindset—focused, resilient, and goal-oriented. Having grown up across Europe and now based in the US, she also believes that great companies can be built anywhere.
Sofia was named to Forbes' Midas Brink List in 2025, which spotlights rising stars in venture capital. Prior to Index, she was an investor at EQT Ventures in Stockholm. She holds an M.Sc. from the London School of Economics.
How would you describe your approach to investing?
SOFIA — I’m in the business of identifying and working with exceptional entrepreneurs. It always starts with the founder — nobody can share the vision like the founder can. I love the thrill of meeting a founder and feeling that strong spike. You have to be open-minded because you never know when that next meeting will come. Every day is gameday.
I get excited when a founder brings me into their world. Before I met Stef and Elise at Cradle, I knew nothing about biology. Now I spend my weekends reading biological papers because they sparked that curiosity. It’s the same with the team at Atlar. I didn’t know much about fintech before meeting them, but their deep domain expertise and execution hunger got me excited to work with them.
What qualities do you look for in a founder?
SOFIA — Above all, I’m looking for a clear spike. Ultimately, there’s no one-size-fits-all trait for entrepreneurs. Someone can spike in storytelling, in execution, in uniqueness of thought. I always ask myself, “What is this founder’s superpower?”
For me, I value self-awareness and founders who are open about what they don’t know. I see that as a strength. I love it when a technical founder comes to me and says, “I don't know what a best in class VP Sales looks like,” or “I don’t know how to build out my go-to-market organization.” They realize that to build an outstanding business they need to surround themselves with people who excel in areas where they may not.
