Jeff Hammerbacher

Jeff is an Assistant Professor at the Icahn School of Medicine at Mount Sinai and the Medical University of South Carolina. At Mount Sinai he is a member of the Immunology and Icahn Institutes. He is a founder and the Chief Scientist of Cloudera, an angel investor with his wife Halle Tecco at Techammer, and serves on the board of CIOX and Sage Bionetworks. Jeff was an Entrepreneur in Residence at Accel Partners immediately prior to founding Cloudera. He joined Accel from Facebook, where he conceived, built, and led the Data team. Before joining Facebook, Jeff was a quantitative analyst on Wall Street after earning his Bachelor's Degree in Mathematics from Harvard University.

Alex Rubinsteyn

Alex Rubinsteyn received his PhD from NYU, where he worked on runtime compilation and machine learning. He is currently working on applications of machine learning to oncoimmunology and designing personalized cancer vaccines.

Tim O'Donnell

Prior to joining Hammer Lab, Tim was an associate research scientist at D. E. Shaw Research, where he watched proteins jiggle in simulation. He holds a B.S. in Math and Computer Science from Brown University.

Seb Mondet

Seb deals with computational and data management needs; with a “types and formal methods” touch. Previously he worked for the DNA Sequencing Facility of NYU-Biology, after completing a postdoc (Oslo, Norway) and a PhD (Toulouse, France) in distributed multimedia systems. He also worked as an avionics software engineer for an Airbus subcontractor.

Tavi Nathanson

Prior to joining Hammer Lab, Tavi led the Search Relevance team at, a team focused on improving the quality of customers' search results. Before that, he built recommender systems as a graduate student at UC Berkeley, where he also received his Bachelor's Degree.

Ryan Williams

Ryan built software infrastructure and applications at Google and Foursquare prior to joining Hammer Lab, where he has focused on developing distributed systems for analyzing genomic data.

Leonid Rozenberg

The early part of Leonid's career was spent making trading computers type safe, teasing apart option valuations, and measuring portfolio risks in simulated conditions. After a brief spin on the start-up wheel encouraging utilitarian negotiations, Leonid joined Hammer Lab. He has a BS in (essentially) Computer Science from Caltech.

B. Arman Aksoy

Arman is currently a post-doctoral fellow at Hammer Lab. His research interests include Bioinformatics, Computational Biology, Genomics, Genetics, Immunology, Cancer, and the interdisciplinary challenges spanning these fields. During his doctorate, he conducted research in Systems Biology and Cancer Genomics at MSKCC as part of the Tri-I CBM and was involved in TCGA, CTD^2, and NRNB efforts. Arman was trained as a Molecular Biologist and Geneticist and also majored in Mathematics at BOUN. He researches, codes, blogs, tweets, and advocates for CHD/HLHS.

Eliza Chang

Eliza came to Hammer Lab from ad tech, where she worked on algorithms and systems to personalize mobile ads. Her A.B. in Physics is from Princeton University.

Jacki Buros Novik

At the Hammer Lab, Jacki is working on developing a better model to estimate the response to checkpoint blockade, with a goal of informing biomarker discovery and clinical decision making. Prior to joining the Hammer Lab, Jacki led the Data Analytics team at Penguin Random House. Before she joined PRH, Jacki worked on bioinformatics of Alzheimer's Disease at Boston University, and as a biostatistician studying cardiovascular disease at Brigham and Women's Hospital/Harvard Medical School. She has a B.A. in Biology from Dartmouth University.

Maxim Zaslavsky

Maxim is a senior at Princeton University, where he studies computer science, statistics, and biology. Prior to joining Hammer Lab, Maxim built data science products at The New York Times, Nest, and a neuroscience startup.

Julia Kodysh

Julia came to Hammer Lab by way of Oscar Health, where she led a team of data engineers focusing on doctor search. Prior to that, she was a senior software engineer at Google, working on healthcare projects whenever they let her. Julia holds a B.S. and M.Eng. in Computer Science from MIT, the latter involving work with the GSEA team at the Broad Institute.

Cindy Gao

Cindy helped build CSNYC (NYC Foundation for Computer Science Education) before joining Hammer Lab as the Operations Lead. She has B.S. in biomedical engineering from Columbia University.