Dr. rer. nat. Tim Kodalle
Postdoctoral Fellow

Tim graduated with a masters in physics from HU Berlin, Germany in 2016 and received his doctorate’s degree from MLU Halle-Wittenberg in 2020. In his doctoral thesis, carried out externally at the Helmholtz-Zentrum in Berlin (HZB), Tim used both experiments and device simulations to elucidate the doping-effects of alkali metals in Cu(In,Ga)Se2 thin film solar cells. As part of his doctoral training, Tim carried out experiments during research visits at the University of Nantes in France and at USF in Tampa. Next to his studies of semiconductor physics, Tim was working as a Research Assistant in the clinics for Nuclear Medicine of the University of Muenster and Charité, Berlin. After his time at HZB, Tim decided to focus more on medical research and once more moved to Tampa. Tim is using mathematical modeling, computational biology and data science to investigate the evolution of cancer cells, proteins, and their interaction with immunotherapies. Outside of work, Tim enjoys biking, cooking, and traveling, and is a vivid supporter of Werder Bremen, his hometown’s soccer team.


Tim is currently at Berkeley National Lab.

Tim's google scholar profile






Gregory Kimmel, PhD
Applied Research Scientist I

Born and raised in NYC, Gregory moved to Florida with his parents before his senior year of high school, and went to the University of Florida for undergrad. He then moved back to NYC for a year teaching chess and mathematics. Later, He went to Northwestern University, where he received his PhD in applied mathematics. Gregory now works in Dr. Altrock’s and Dr. Nemi Andor's lab at IMO, where his work focuses on developing mechanistic models of tumor ecology using evolutionary game theory, to explain cancer progression and cancer treatment. When Gregory is not working, he enjoys playing racketball, beach volleyball and chess.


Gregory's publications on google scholar






Brian Johnson, BS 
Research Assistant



Brian is a research assistant with a degree from Rutgers University. A physics major, Brian recently developed an interest in quantitative biology after taking an elective course offered at Rutgers. He started working at in the lab as a SPARK intern, and then went on to work on his honors thesis on tumor public good (growth factor) adaptive dynamics. In this project he focused on the emergence and stability of heterogeneity in tumors using evolutionary game theory and adaptive dynamics approaches. Brian now works on single cell sequencing-based methods to infer phenotypic selection and adaptation in leukemia. Outside of work, he enjoys surfing and running.

Brian is now a graduate student at UC San Diego. 




Ashley Kelly, 2017 (Palm Harbor University High, now University of Florida)

Yixuan He, 2018 (Dartmouth College, now Harvard University)

Blake Bridge, 2018 (Tampa Preparatory School, now Yale University)

Benjamin Sherwin, 2019 (Strawberry Crest High School)

Abigail Tan, 2019 (Palm Harbor University High)

Kristofer Hammond, 2020 (Dartmouth College)

Meghan Ferrall-Fairbanks, PhD (Postdoctoral Fellow, now faculty member at UF)