Zohar Strinka, Developer in Denver, CO, United States
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Zohar Strinka

Verified Expert  in Engineering

Machine Learning Developer

Location
Denver, CO, United States
Toptal Member Since
December 4, 2018

Zohar has a range of interests related to using data to make business decisions. These include every aspect of taking data from where it lives to the design and presentation of the final metrics. Her analytics toolkit includes data engineering, data science, optimization, and BI. She has industry expertise in supply chain, healthcare billing, people analytics, auctions, and lean engineering.

Portfolio

Analytics Strategies LLC
PostgreSQL, Python, R, Python 3, Data Science, SQL, Machine Learning...
Mashey
PostgreSQL, SQL, R, Qlik Sense, Data Science, Machine Learning...
Self
Python, Java, R, Python 3, Data Science

Experience

Availability

Part-time

Preferred Environment

PostgreSQL, Python, R

The most amazing...

...work I've done is to disentangle the world of US healthcare billing well enough to make cash flow predictions from claims data.

Work Experience

Principal Consultant

2018 - PRESENT
Analytics Strategies LLC
  • Developed logistics models for a complex supply and demand network using open source linear and integer optimization tools and Python.
  • Worked with stakeholders throughout a division to provide custom analytics and ML solutions to a variety of business needs.
  • Worked with HRIS data, analysis, and ML to identify bias in an organization's pay.
  • Developed a churn model for a lead generation product that informed business decisions.
  • Understood customers business needs and quickly delivered on their top priorities.
Technologies: PostgreSQL, Python, R, Python 3, Data Science, SQL, Machine Learning, AWS Lambda, Database Architecture, Operations Research, Optimization

Data Scientist

2017 - 2018
Mashey
  • Used machine learning, data mining, and predictive analytics to provide insight into key business problems.
  • Developed descriptive analytics tools to meet customer needs in healthcare, manufacturing, and logistics.
  • Supported a data warehouse design and build for a large retailer.
  • Gathered requirements and developed an optimization tool for a healthcare customer.
Technologies: PostgreSQL, SQL, R, Qlik Sense, Data Science, Machine Learning, Database Architecture

Algorithm Developer

2016 - 2017
Self
  • Used trading tools, Java, and R to extract and analyze price and indicator data.
  • Implemented the resulting algorithm using Python and a REST API connection to the broker.
  • Developed a philosophy for how to approach time series problems in a computationally manageable way.
  • Improved data cleaning and data science skills.
Technologies: Python, Java, R, Python 3, Data Science

Graduate Student

2010 - 2016
University of Michigan
  • Built probabilistic models of inventory problems commonly faced by manufacturers and distributors.
  • Used stochastic optimization and auction theory to create provably effective algorithms. Coded the resulting algorithms to demonstrate the strengths and weaknesses of the models in practice.
  • Developed advanced analytics skills including business acumen, requirements gathering, and analysis skills.
Technologies: Research, Mixed-integer Linear Programming, Linear Programming, Optimization, C++, Operations Research

Decision Making Blog

http://typethreeerror.blogspot.com/
I like to explain complex concepts in intuitive terms. I have practiced this skill over the past several years on my blog.

Languages

Python, Python 3, R, SQL, Java, C++

Tools

Qlik Sense

Paradigms

Linear Programming, Data Science

Other

Mixed-integer Linear Programming, Optimization, Operations Research, Stochastic Modeling, Communication, Software Development, Data Mining, Research, Machine Learning, Data Engineering, Data Modeling

Libraries/APIs

Caret

Platforms

AWS Lambda

Storage

PostgreSQL, Database Architecture

2010 - 2016

Ph.D. in Industrial and Operations Engineering

University of Michigan - Ann Arbor, Michigan

2005 - 2010

Bachelor's Degree in Industrial Engineering and Honors Physics

Purdue University - West Lafayette, IN

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