Emily Reff
Vice President - Modeling Engineering at Two Sigma
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolEmily Reff is a Vice President of Modeling Engineering at Two Sigma with seven years of software engineering experience building high-impact systems for quantitative finance. She progressed from hands-on engineering roles at Goldman Sachs and Credit Suisse to technical leadership, designing production trading and sales applications used by hundreds of global users. Emily combines strong backend expertise—evidenced by contributions to the popular Ibis Python dataframe project, where she enhanced rolling/window function semantics—with a track record of shipping robust desktop and web tools in Java, C#, and React. She holds top-tier academic credentials and has led cross-disciplinary research projects integrating computer vision and ML into practical lab software, a detail that highlights her ability to translate research-grade algorithms into reliable production tools.
7 years of coding experience
7 years of employment as a software developer
The University of Arizona3.93/4.00, 3.93/4.00 at Vanderbilt University
Spanish, Portuguese
Github Skills (7)
dataframes10
pandas10
window-functions10
python10
dataframe10
data-analysis10
sql8
Programming languages (2)
Github contributions (4)
ibis-project/ibis
May 2019 - Jan 2022
the portable Python dataframe library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:81 reviews, 31 commits, 35 PRs in 2 years 8 months
Contributions summary:Emily primarily contributed to the development of the Ibis library's functionality for window functions. They implemented the `min_periods` parameter for rolling windows and consolidated trailing window functions to handle different preceding parameters, including integers and intervals. Furthermore, the user added support for the `rows_with_max_lookback` parameter and addressed related issues such as adding max_lookback to window replace/combine functions and supporting `pandas.Timedelta`.
polarspythondaskdataframesdata-science
emilyreff7/ibis
May 2019 - Jan 2022
A pandas-like deferred expression system, with first-class SQL support
Contributions:4 PRs, 105 pushes, 58 branches in 2 years 8 months
pythondeferrednim-langsqlpandas
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