Ihor Harahatyi, Software Developer in Szczecin, Poland
Ihor Harahatyi

Software Developer in Szczecin, Poland

Member since August 30, 2016
Ihor is a skilled Python developer who has worked on a number of projects, from websites to private cloud systems. His expertise ranges from algorithms to networking, multithreading, virtualization, and more. He enjoys participating in programming contests, and he is a great communicator.
Ihor is now available for hire


  • Atom Cream
    Amazon Web Services (AWS), Big Data, Docker, Management, Django, Python
  • SoftServe
    Amazon Web Services (AWS), Dask, Docker, R, Python
  • Levi9 Ukraine
    Scrum, Ansible, Terraform, HAProxy, Varnish, Django



Szczecin, Poland



Preferred Environment

Python, Docker, Linux

The most amazing...

...thing I've done is run my own service company, where I worked with many Python-related projects from various business domains.


  • CTO

    2017 - PRESENT
    Atom Cream
    • Managed technical vision and led the engineering team.
    • Worked with clients to solve their needs.
    • Created architecture for client projects as well as development infrastructure.
    • Reviewed code and mentored junior developers.
    • Created a Docker-based pipeline for projects.
    • Participated in architecture, management, and development of Django + React projects.
    Technologies: Amazon Web Services (AWS), Big Data, Docker, Management, Django, Python
  • Application Architect

    2018 - 2019
    • Integrated many independent third parties in one pipeline.
    • Built an SDK for econometrical projects.
    • Gathered requirements as well as created and documented architecture.
    • Built a platform for orchestrating Docker containers and deployed them to AWS via Ansible and Terraform.
    • Built a platform for integration of different services to build econometrical models and predictions using R/Julia and MixedModel for clients.
    Technologies: Amazon Web Services (AWS), Dask, Docker, R, Python
  • Senior Software Engineer

    2016 - 2017
    Levi9 Ukraine
    • Working on the Netherlands' largest news website.
    • Contributed to architecture design and people management.
    • Deployed using AWS, Ansible, and Terraform.
    • Developed new features using Django (Django REST Framework).
    • Supported a legacy PHP-based CMS.
    • Collaborated with the Scrum team.
    Technologies: Scrum, Ansible, Terraform, HAProxy, Varnish, Django
  • Executive Software Engineer

    2014 - 2016
    MediaSapiens GmbH
    • Developed various websites using Django framework. Contributed to team leadership and technical design.
    • Contributed to business analysis for a BI project.
    • Built the front end using React.
    • Worked on bookings, fintech, BI, and medical projects.
    • Built deployment pipelines using Ansible, Terraform, and Docker.
    Technologies: Node.js, Docker, React, jQuery, Model View Controller (MVC), Django, Python
  • Software Engineer

    2013 - 2014
    • Developed a secure file storage system for enterprise clients. Refactored different parts of the code. Improved security. Developed new features. Developed a Java applet for large file upload.
    • Refactored a legacy codebase.
    • Implemented a new way to work with the DB.
    • Worked with multithreading and async programming.
    Technologies: PHP, AngularJS, Java, REST, Tornado, Python
  • Software Engineer

    2011 - 2013
    • Developed a private cloud for a proprietary backup system. Implemented different modules of the system, refactoring parts of the custom framework.
    • Helped develop a driver for the CIFS network file system.
    Technologies: REST API Architecture, Big Data, Multithreading, Networking, Python


  • Vpo-sos.org

    An internally displaced persons aid portal, a charity project for the UN and the Ukrainian government. Web Development in Python, jQuery, and Django Framework.

  • React, Flux, ES6 and Problems We Met

    A talk about REACT, Flux, and problems we met integrating this stack, given for SoftServe IT Weekend Kharkiv on 14.11.2015.


  • Languages

    Python, JavaScript, SQL, C, Java, PHP, R
  • Frameworks

    Redux, Django, Flux, AngularJS
  • Libraries/APIs

    React, REST APIs, Dask, jQuery, Node.js
  • Paradigms

    DevOps, REST, REST API Architecture, Kanban, Scrum, Agile, Model View Controller (MVC), Management
  • Other

    Algorithms, Data Structures, Unix/Linux Virtualization, Tornado, HAProxy, Networking, Multithreading, Big Data
  • Tools

    Ansible, Docker Compose, Varnish, Terraform
  • Platforms

    Linux, Docker, Amazon Web Services (AWS)
  • Storage

    MySQL, PostgreSQL, MongoDB


  • Bachelor's Degree in Systems Programming
    2014 - 2016
    National Technical University: Kharkiv Polytechnic Institute - Kharkiv, Ukraine
  • Master's Degree in Applied Economics
    2009 - 2015
    Harkivs'kij Nacional'nij Universitet im. V.N. Karazina - Kharkiv, Ukraine

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