Scroll To View More
Mojmir Vinkler, Machine Learning Developer in Brno, South Moravian Region, Czech Republic
Mojmir Vinkler

Machine Learning Developer in Brno, South Moravian Region, Czech Republic

Member since April 17, 2014
Mojmir is a full-stack data scientist with strong development skills, allowing him to handle model design, data collection, and final implementation of software. He has a strong background in statistics, machine learning, business, computer science, and predictive modeling of big data sets.
Mojmir is now available for hire

Portfolio

Experience

  • Python, 7 years
  • Data Mining, 5 years
  • Machine Learning, 5 years
  • Deep Learning, 4 years
  • IPython Notebook, 4 years
  • Apache Spark, 3 years
  • Pandas, 2 years
Brno, South Moravian Region, Czech Republic

Availability

Part-time

Preferred Environment

macOS, Atom, Jupyterlab, GitLab

The most amazing...

...thing I've ever built is an optimal product pricing algorithm based on an idea from multi-armed bandits that successfully increased revenues by a third.

Employment

  • Lead Data Scientist

    2017 - PRESENT
    Kiwi.com
    • Built a machine learning model from prototyping to deployment.
    • Optimized product and business processes.
    • Built an interactive web app to visualize A/B testing.
    • Set up infrastructure (BigQuery/Spark) to work with petabytes of data.
    • Managed and optimized revenue.
    Technologies: Python, Spark, Flask, Scikit-learn, Docker
  • Python Programmer, Data Scientist

    2018 - 2018
    Human Brain Project
    • Built Federated Learning for medical data.
    • Implemented custom Federated Learning machine learning algorithms as Docker images.
    Technologies: Python, Docker, Statsmodels, Scikit-learn
  • Python Programmer, Data Scientist

    2014 - 2017
    Picwell
    • Processed huge amounts of data using Spark.
    • Created and optimized scikit-learn models.
    • Built an ETL application with Luigi and Flask.
    • Created surveys on Mechanical Turk.
    • Integrated R and Python code.
    Technologies: Python, Spark, Flask, Scikit-learn
  • Pattern Analysis/Data Matching System Engineer

    2014 - 2015
    Flexcode (via Toptal)
    • Created an algorithm for predicting correct matches using text analytics and image processing plus a web UI for data collection.
    Technologies: Python, Scikit-learn, Flask, Google App Engine
  • Data Scientist

    2013 - 2015
    Webnode
    • Handled ETL processing in Python with Pandas.
    • Designed and implemented optimal product pricing algorithms.
    • Designed a customer lifetime value (CLV) model.
    • Monitored AdWords (automated alerts) and bidding based on CLV.
    • Engaged in smart business reporting based on statistical models and machine learning.
    Technologies: Python, MySQL, R, Pandas
  • Web Developer

    2011 - 2013
    Mergado.cz
    • Created an XML parser for parsing invalid XML files (product feeds for price comparison sites).
    • Developed web back-ends.
    • Designed and implemented functionality for bidding on price comparison sites.
    • Built data connectors to Heureka.cz and Sklik.cz.
    • Handled minor front-end work with JavaScript.
    Technologies: Python, PHP, JavaScript, MongoDB, Redis

Experience

  • Federated Learning Algorithms (Development)
    https://github.com/LREN-CHUV/algorithm-repository

    Implemented various Federated Learning machine learning algorithms as docker images to be used in the Medical Informatics platform.

  • Universal Portfolios (Development)
    https://github.com/Marigold/universal-portfolios

    Plenty of online portfolio selection algorithms (financial engineering) and tools for analysis developed as part of my master's thesis (available in Czech at https://drive.google.com/file/d/0B5VWK_SXwPlkaGg2NGZYTjdYYzQ/edit?usp=sharing).

Skills

  • Languages

    Python, R, JavaScript, Haskell
  • Frameworks

    Apache Spark, GAE, Flask, Django
  • Libraries/APIs

    Matplotlib, Pandas, PyMC, NumPy, SciPy, PyQt, Scikit-learn, AdWords API
  • Tools

    IPython Notebook, Sublime Text 2, IPython, StatsModels, MATLAB
  • Storage

    HDFS, Google Cloud, Redis, MongoDB, PostgreSQL, MySQL
  • Other

    Machine Learning, Data Mining, Deep Learning, Financial Engineering, Statistics, Data Visualization, Business Intelligence (BI), Data Analysis, Bayesian Statistics
  • Paradigms

    Kanban, Functional Programming, Scrum
  • Platforms

    Linux

Education

  • PhD degree in Biomedical Image Processing
    2014 - 2017
    Masaryk University - Czech Republic
  • Master's (MBA) degree in Business Administration
    2012 - 2014
    City University of Seattle - Seattle
  • Master's degree in Statistics and Data Analysis
    2009 - 2014
    Masaryk University - Czech Republic
I really like this profile
Share it with others