Cynthia Niyonzima

Overview

I invest in developer infrastructure at Sandstone Partners, usually at pre-seed and seed. Backed 60 founders at pre-seed and seed. Before that: Flutterwave and Visa. Most at home with venture capital and developer tools. I volunteer with a food bank on weekends.

Travels often; replies within 48 hours

Experience

1. Principal

   Dec 2025 - Present
   Sandstone Partners · 10 mo · Full-time · Nairobi, Kenya
   • Backed 32 founders at pre-seed and seed.
   • Sit on 2 boards.
   • Led or co-led 36 investments, 5 of them now at Series B or later.
2. Senior Financial Analyst

   Mar 2024 - Dec 2025
   Flutterwave · 1 yr 9 mo · Full-time · Nairobi, Kenya
   • Took forecast accuracy to within 4% for 7 straight quarters.
3. Controller

   Aug 2021 - Mar 2024
   Visa · 2 yr 7 mo · Full-time · Nairobi, Kenya
   • Built the operating model the board used for a $249 million raise.
4. Finance Manager

   Oct 2018 - Aug 2021
   Jumia · 2 yr 10 mo · Full-time · Nairobi, Kenya
   • Ran diligence on 3 acquisitions.
   • Took forecast accuracy to within 2% for 4 straight quarters.

No references yet.

Education

1. Covenant University

   BEng, Economics
   2014 - 2018