layout page title Alumni [Alyssa Frazee](http://alyssafrazee.com/) was a Ph.D. student in Biostatistics at the Johns Hopkins Bloomberg School of Public Health. She built [derfinder](https://github.com/alyssafrazee/derfinder), [ballgown](https://github.com/alyssafrazee/ballgown) and [RSkittleBrewer](https://github.com/alyssafrazee/RSkittleBrewer), and she writes an [awesome blog](http://alyssafrazee.com/) which has appeared on the front page of Hacker News. She is now a data scientist at [Stripe](https://stripe.com/). [Nick Carchedi](http://nickcarchedi.com/) was a masters student in Biostatistics at the Johns Hopkins Bloomberg School of Public Health. He built [swirl](http://swirlstats.com/) and helped build the [Data Science Specialization](https://www.coursera.org/specialization/jhudatascience/1). He is now a senior analyst for [McKinsey & Company](http://www.mckinsey.com/). [Hilary Parker](https://twitter.com/hspter) (Ph.D. 2013) started as a Data Analyst at [Etsy](https://www.etsy.com/) and has now moved to a position at [Stitchfix](https://www.stitchfix.com/). Together with Roger Peng she produces the podcast [Not so Standard Deviations](http://simplystatistics.org/2015/09/17/not-so-standard-deviations-the-podcast/). She built [frozen sva](http://www.ncbi.nlm.nih.gov/pubmed/25332844) and wrote this [blog post](http://hilaryparker.com/2013/01/30/hilary-the-most-poisoned-baby-name-in-us-history/) that was syndicated in [New York Magazine](http://nymag.com/thecut/2013/01/hillary-most-poisoned-baby-name-in-us-history.html)! [Andrew Jaffe](http://www.aejaffe.com/) (Ph.D. 2011, advised by Dani Fallin) He built software for [variably methylated regions](http://www.biostat.jhsph.edu/~ajaffe/code/vmrFinder.R) and [gene set bagging](http://www.biomedcentral.com/1471-2105/14/360). He is now an Investigator at the Lieber Institute for Brain Development where he runs a group of computational genomics investigators and continues to collaborate with us in the Leek group. [Simina Boca](http://scholar.google.com/citations?user=6wieRCYAAAAJ&hl=en) (Ph.D. 2011, co-advised with Giovanni Parmigiani) is now Assistant Professor at Georgetown University Medical Center, Innovation Center for Biomedical Informatics and Department of Oncology. She created methods for [posterior estimation of gene-set level false discovery rates](http://onlinelibrary.wiley.com/doi/10.1111/biom.12060/abstract).
