Software Engineer Data

J acob Kesinger

*************@*****.***

+1-443-***-****

Los Altos H ills, California

Areas of interest :

Cryptanalysis, high performance computing, data analysis, data

modeling, data mining, machine learning, natural language

processing, social network analysis, graph analytics, big data,

statistics.

Skills:

Languages: Fluent in Python, C, R. Also know c++, perl, matlab, sql.

L ibraries and tools: scipy, numpy, scikit-learn, graphlab, graphchi, git.

C ur rent Employer :

Sep 2012 - Present

Quid Inc

San Francisco CA

Position: Senior Software Engineer

• Researched, implemented, and wrapped new community detection

a lgorithms and

• graph analytics.

• Using the GraphLab package, implemented distributed community

detection algorithms.

• Researched and created new network sparsification algorithm.

• Spearheaded effort to t ransition to scraped web data and away from

• hand-curated data.

• Created and implemented new algorithms using L1-regularized

regression

• (LASSO) for text summarization.

• Re-implemented a published algorithm using a different optimization

technique

• (genetic algorithm vs. simulated annealing) with improvements in

specific

• parts of the problem space; final result had comparable speed to

reference

• implementation despite being an interpreted language (python) versus

• compiled (c

• Used jackknife resampling to estimate statistical distributions

• and find outliers.

• Analyzed hand-curated data through resampling.

• Performed post-mortem analysis of metrics to determine which were

• superfluous and could be removed to save computational resources.

• Implemented various Markov and Naive Bayes models for text data, for

• purposes of classification and ranking.

• Evaluated collaborative fil tering techniques for use in a novel

recommendation context.

P revious positions:

Aug 2002 - Aug 2012

National Securi ty Agency

Fort George G. Meade, MD

Insti tute for Defense Analyses

Center for Communications Research

Princeton NJ

Positions:

A pplied Research Mathematician (2002-2006)

C ryptanalytic Diagnostician (2006-2012)

Primary Responsibili ty: Analyze and diagnose cryptanalytic algorithms.

M ajor accomplishments included:

• Researched and implemented cepstral-based algorithms for use in

categorizing voice samples by language. Participated in N IST

L anguage Identification competition.

• Improved existing algorithms for decoding one variety of Turbo Product

Code.

• Adapted graph theoretic concepts to data analysis. Monte Carlo

estimates of corresponding family of cumulative density functions.

• Developed and implemented new techniques for research into modems

over narrowband HF channels.

• 15 NSA internal publications. Ti tles and abstracts classified.

• K ryptos Society Cryptanalyst of the Quarter, 2007.

• Specialized in Cryptanalysis, Cryptanalytic Diagnosis, Signal

P rocessing.

E ducation :

P h.D., Mathematics, 2001. Texas Tech University

Advisor: L inda J.S. Allen

Dissertation t i tle: Mathematical Models of Host-Pathogen Genetics in Plant

Pathosystems

M.S., Statistics, 1999. Texas Tech University

Advisor: Benjamin Duran. No thesis.

M.S., Mathematics, 1998. Texas Tech University

Advisor: L inda J.S. Allen.

T hesis ti tle: In tegrodifference Equations Applied to Plant Competition and

Control

B .S., Mathematics/Computer Science, 1995. Western Washington University

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