Independent Data Science Consultant Data Scientist

Oct. 2016 - Present

-Currently building a matchmaking algorithm for a transportation app company.

-Created SQL-based reports to assess marketing (Facebook and email) campaigns and user activity for a social app.

Galvanize/Zipfian Technical Admissions Officer

Sep. 2015 – Sep. 2016

-Conducted 30 minute coding interviews for the 3-month data science bootcamp.

-A/B tested new interview questions and revamped Galvanize’s coding interview process

-Completed data science immersive program with project-based curriculum focused on programming, data processing, machine learning, and data visualization.

-Final Project: Developed a unique algorithm that uses aspect-based sentiment scoring for personalized restaurant recommendations. Came up with the concept and algorithm after doing NLP on restaurant reviews for business insights. - NLTK statsmodels BeautifulSoup PostgresSQL Salesforce CRM Github github.com/jachian22/yelp_nlp

Sage-N Research Biotech Software (Proteomics) Data Scientist Sep. 2013 – Sep. 2015

-Owned the machine learning pipeline for the software utilizing semi-supervised learning to allow labs to train and implement their own models using their own data.

-Handled the bulk of the service stream from labs to implement techniques used in our software at a more granular level for our clients. - R: e1071, caret, ggplot2 Python: scikit-learn, Pandas, NumPy

Honors & Awards

-US State Dept Clean Energy Hackathon - 1st place

SKILLS

Languages:

Python, R, SQL, HTML

Python Packages:

NumPy, SciPy, Pandas, scikit-learn, PySpark, NLTK, gensim, NetworkX, BeautifulSoup, Matplotlib

R Packages:

ggplot2, caret, plyr, randomForest, e1071

Stats/Machine Learning:

Random Forest, Gradient Boosting, Word2vec, Doc2vec, Recommender Systems, SVM, SVD/PCA, NMF, Bayesian Methods, Neural Networks

Databases / Big Data:

PostgresSQL, SQLite, MongoDB, MapReduce, Spark

EDUCATION

Data Science Fellowship

Galvanize, 2015

BS, Chemistry

UC Santa Barbara, 2013

LINKS

LinkedIn - jachian22

Github - jachian22

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