Donald Lee-Brown

Overview

Donald Lee-Brown is a Partner at Positive Sum [1]. Lee-Brown previously served as Research Director at Positive Sum from July 2023 to August 2025 [4]. Before joining Positive Sum, Lee-Brown held roles at Iggy as Director of Product and Product Manager [5][6], and at MeetElise as Technical Product Manager [7]. Lee-Brown spent several years at Insight Data Science in various capacities, including Director of Product, Head of Product for the New York office, and Program Director for Data Scientists [8][9][10]. Lee-Brown holds a Ph.D. in Physics from the University of Kansas [11] and a B.A. in Physics from Luther College [12], and attended the Illinois Mathematics and Science Academy [13]. According to their professional profile, Lee-Brown was once an astronomer and focuses on building great products and teams [2].

Career history

1. PartnerAug 2025 to presentPositive Sum
2. Research DirectorJul 2023 to Aug 2025Positive Sum
3. IDirector of ProductDec 2022 to Jul 2023Iggy
4. IProduct ManagerApr 2022 to Dec 2022Iggy
5. MTechnical Product ManagerFeb 2021 to Mar 2022MeetElise
6. IDDirector of ProductAug 2020 to Dec 2020Insight Data Science
7. IDHead of Product, New YorkJul 2019 to Aug 2020Insight Data Science
8. IDProgram Director, Data ScientistJul 2018 to Jul 2019Insight Data Science

Education

1. Doctor of Philosophy (Ph.D.), Physics2013 - 2018The University of Kansas
2. LCBachelor of Arts (B.A.), Physics2009 - 2013Luther College
3. IMIllinois Mathematics and Science Academy2006 - 2009