Omar Khan, Software Developer in Chicago, IL, United States
Omar Khan

Software Developer in Chicago, IL, United States

Member since September 6, 2015
Omar is a software engineer specializing in full-stack web development. He has many years of experience working with technologies such as Python, Ruby, and JavaScript. Omar is passionate about his work and diligent about writing code that is clean, readable, and well-tested.
Omar is now available for hire


  • Instructure
    React, Ruby on Rails (RoR), Ruby
  • OpenCraft
    Selenium, Ansible, MySQL, Django
  • Playlab Games
    Cassandra, Redis, PostgreSQL, MySQL, Node.js, Ruby on Rails (RoR), Ruby



Chicago, IL, United States



Preferred Environment

Git, Vim Text Editor, Unix

The most amazing...

...project I have worked on is a specialized search engine combining crawled and indexed pages with on-demand web scrapers.


  • Senior Software Engineer

    2017 - PRESENT
    • Developed a new assessments platform using modern web technologies and a focus on accessibility, scalability, and internationalization.
    Technologies: React, Ruby on Rails (RoR), Ruby
  • Full-stack Developer

    2016 - 2016
    • Worked on MIT and Harvard's Open edX MOOC platform.
    • Collaborated with a completely remote team.
    • Worked on an open source project (contributions can be found on GitHub).
    • Helped to develop a tool to deploy and manage Open edX sandboxes on OpenStack virtual machines.
    Technologies: Selenium, Ansible, MySQL, Django
  • Lead Back-end Developer

    2014 - 2015
    Playlab Games
    • Recruited and managed a team of eight developers.
    • Scaled Ruby on Rails API back-ends to handle thousands of requests per second from 20+ million users.
    • Split a legacy Ruby on Rails monolithic app into five separate microservices, improving development speed and maintainability.
    • Deployed a Cassandra cluster allowing a new title to scale horizontally in response to rapidly growing traffic.
    • Built an extract-transform-load (ETL) framework in Ruby for game analytics.
    Technologies: Cassandra, Redis, PostgreSQL, MySQL, Node.js, Ruby on Rails (RoR), Ruby
  • Developer

    2012 - 2013
    • Built a distributed web crawler using Python and Gevent.
    • Managed an Elasticsearch cluster storing 100+ terabytes of crawled pages.
    • Built a web scraping framework in Python for developing targeted scrapers.
    • Developed an API back-end for running searches using Django and Celery.
    • Implemented a web front-end using CoffeeScript and Backbone.js, styled using Less.
    Technologies: Less, CoffeeScript, Backbone.js, Elasticsearch, Redis, PostgreSQL, Gevent, Celery, Django, Python


  • Mind the Gap

    Inspired by a feature in the New Yorker, this visualization uses D3 to show income inequality along London tube lines.

  • CoffeeDoc

    A tool to show useful API documentation for complex class hierarchies spread across multiple CoffeeScript source files. Used by some major projects in the CoffeeScript community.


  • Languages

    Ruby, JavaScript, Python, CoffeeScript, Less
  • Frameworks

    Redux, Ruby on Rails (RoR), Django, Flask, Selenium
  • Libraries/APIs

    React, jQuery, Backbone.js, Node.js, Gevent
  • Other

    Software Development, Web Development
  • Tools

    Vim Text Editor, Git, Celery, Ansible, Mercurial
  • Paradigms

    Agile Software Development, Object-oriented Programming (OOP), Functional Programming
  • Platforms

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

    Relational Databases, Redis, PostgreSQL, MySQL, SQLite, Cassandra, Elasticsearch


  • Bachelor's Degree in Economics, Politics, and International Studies
    2005 - 2008
    Warwick University - United Kingdom

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