Adam Ivansky, Machine Learning Developer in Prague, Czech Republic
Adam Ivansky

Machine Learning Developer in Prague, Czech Republic

Member since September 15, 2018
Adam has over four years of experience with data analytics, machine learning, and developing algorithms for self-driving vehicles. His analytics tools of choice include SQL, Python, Matlab, and Hive. Adam is able to effectively communicate with both highly technical and non-technical specialists with ease.
Adam is now available for hire

Portfolio

  • Fortune 500 company
    AWS EMR, SPARK, Python, Redshift, AWS S3, AWS CLI, Airflow
  • eBay
    Teradata SQL, Python, Hive, PySPARC, Tableau, Scikit-learn, tensor flow
  • Valeo
    Python, Matlab, SQL, OpenCV, C++, TBB, STD, Protobuffers

Experience

  • SQL, 5 years
  • Machine Learning, 3 years
  • Python 3, 3 years
  • AWS EMR, 2 years
  • PySpark, 2 years
  • Machine Vision, 2 years
  • Spark SQL, 2 years
  • AWS S3, 1 year

Location

Prague, Czech Republic

Availability

Part-time

Preferred Environment

iOS, Windows, Linux, VS Code

The most amazing...

...project I have worked on was an image recognition algorithm for self-driving vehicles.

Employment

  • Data Engineer

    2019 - PRESENT
    Fortune 500 company
    • Developed an ETL pipeline based on PySPARK running on AWS EMR for extraction of data from Redshift to S3.
    • Developed a marketing discount recommendation engine based on machine learning in PySPARK.
    • Automated a marketing pipeline in Jenkins.
    • Developed data quality checks in PySPARK.
    • Managed EMR cluster creation/termination in AWS CLI and AWS console.
    Technologies: AWS EMR, SPARK, Python, Redshift, AWS S3, AWS CLI, Airflow
  • Senior Database Marketing Analyst

    2017 - 2018
    eBay
    • Developed targeting scripts for flagship marketing campaigns with an emphasis on email, mobile push notification, social, and on-site channels. The campaigns often targeted over 50 million users and sometimes resulted in over $100,000 in iGMB annually.
    • Designed, developed, implemented, and maintained multi-armed bandit algorithms written in Python while adhering to marketing standards and processes within eBay. The algorithm was measured to generate $5 mil. annually.
    • Trained an algorithm for send-time optimization. This has resulted in a 15% increase in click-through-rate in campaigns where it was implemented.
    • Assessed existing email, social, and mobile marketing campaigns in terms of KPIs such as iGMB, OR, and CTR.
    • Created dashboards in Tableau that reported on the performance of different marketing algorithms I have created.
    • Created scripts that moved data between HIVE and Teradata servers.
    • Worked with the largest Teradata DWH in the world and often queried tables with 100+ billion rows.
    • Communicated with stakeholders across multiple timezones.
    Technologies: Teradata SQL, Python, Hive, PySPARC, Tableau, Scikit-learn, tensor flow
  • Machine Learning SW Developer

    2016 - 2017
    Valeo
    • Developed and trained a machine vision algorithm for recognition of pedestrians in front of a vehicle. The algorithm has since been implemented in a number of vehicle models including the GM 2019 Chevy.
    • Trained and algorithm for detection of dirt on the camera lens. This algorithm had a crucial role in supporting other more complex self-driving functionalities.
    • Assessed the quality of unstructured annotated video data used for algorithm training.
    • Created a script for synchronization of both structured and unstructured data between multiple teams who participated on the project.
    • Attended a computer science conferences and studied scientific literature to keep up-to-date with new trends in machine learning and computer science. Knowledge exchange with other team-members.
    • Communicated and networked with teammates and stakeholders from France and Ireland.
    Technologies: Python, Matlab, SQL, OpenCV, C++, TBB, STD, Protobuffers
  • Credit Risk Analyst

    2014 - 2015
    Erste Group
    • Calculated risk parameters CCF, LGD and PD according to BASEL 2.
    • Reduced the overall reserve requirements of Erste Bank subsidiaries by over 7 % thanks to the improvements in the statistical engine for calculation of risk parameters CCF, LGD and PD that I have introduced.
    • Designed and trained a mathematical model in SAS for prediction of the overall loss in the event of a client default. This helped Erste improve the repossession process and reduce expenses.
    • Performed ad-hoc stress-tests for Erste subsidiaries. The results were later submitted directly to the European National Bank.
    • Assessed of risk portfolio stability via bootstrapping and monte-carlo methods.
    • Created interactive dashboards for risk parameter reporting in MS SQL and Excel.
    • Developed a data quality testing system.
    Technologies: SAS, MS SQL, Matlab, Excel
  • Teaching and Research Assistant

    2012 - 2014
    University of Rochester
    • Led lab lectures for undergraduate students.
    • Developed software for automation of experiments and analyzed data produced by the experiments.
    • Wrote several scientific papers that are available online.
    Technologies: Matlab

Experience

  • eBay App Push Notification Send Time Optimization Project (Development)

    - The aim of the project was to improve the click-through rates of mobile push notifications
    - The introduction of the algorithm resulted in 15% improvement in the Mobile Push Notification Click-Through-Rate
    - I decided to achieve this by developing a machine learning algorithm that predicted the optimum contact time for every user
    - The algorithm was developed in Python and was trained using scikit-learn
    - Obtaining training data required the use of HIVE and PySPARK
    - I have successfully implemented the algorithm into the marketing production environment and instructed marketing analysts on how to use it

  • Model for Dynamic Content Optimization and Customization (Development)

    - The aim of the project was to increase the click-through rate of eBay coupon campaigns via the use of machine learning
    - The development of the algorithm was successful and it was measured to generate 20% lift in click-through-rate and iGMB
    - The early version of the algorithm was based on the multi-armed bandit. Later versions made use of contextual NLP-based multi-armed bandit
    - The algorithm was developed using a combination of Teradata SQL and Python
    - I have also developed an interactive Tableau dashboard in order to monitor the function of the algorithm and to measure the KPI lift that the algorithm was bringing

  • Model for Pedestrian Detection Intended for Self-driving Vehicles (Development)

    - The aim of the project was to develop a machine vision algorithm capable of detecting pedestrians in front of a vehicle by analyzing the input from the vehicle camera
    - The algorithm is now fully functional and is embedded into a number of newer vehicle models including the GM 2019 Chevy
    - The machine learning algorithm we decided to use was ada-boost cascade classifier combined with deep neural network
    - We wrote the training application from scratch in C++. Training had to be multithreaded in order to be efficient.
    - Testing and validation was done in Python
    - A large database of annotated video data was used for algorithm training

  • Model for Prediction of Loss Given Default (Development)

    - Precise prediction of the total final loss after the default of a client is a key to reducing risk associated with different loan products
    - I have developed a model that relied on the loan to value ratio and the value of the collateral
    - Development was done using a combination of SAS and MS SQL
    - Development of the model required extensive cleaning of the data and data quality testing

Skills

  • Languages

    SQL, Python 3, Python 2, C++14
  • Frameworks

    AWS EMR, Hadoop
  • Tools

    MATLAB, Jenkins, Apache Airflow, Git, Spark SQL, AWS CLI, Bitbucket
  • Other

    Reinforcement Learning, Data Analytics, Machine Learning, ETL Tools, Machine Vision, Clustering Algorithms
  • Libraries/APIs

    Sklearn, PySpark
  • Platforms

    iOS, Windows, Linux, AWS EC2, Spark Core
  • Storage

    SQLite, Teradata, Apache Hive, Redshift, AWS S3
  • Paradigms

    Agile

Education

  • Master of Science degree in Physics
    2012 - 2014
    University of Rochester - New York, USA
  • Bachelor's degree in Physics
    2008 - 2012
    National University of Ireland, Galway - Galway, Ireland

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