Scroll To View More
Hire the top 3% of freelance developers
toptal.com
Call us: +1.888.604.3188
Steven Kryskalla, Python Developer in Commerce Charter Township, MI, United States
Steven Kryskalla

Python Developer in Commerce Charter Township, MI, United States

Member since September 22, 2014
Steven is now available for hire
Hire Steven
Steven Kryskalla, Python Developer in Commerce Charter Township, MI, United States
Steven Kryskalla

Python Developer in Commerce Charter Township, MI, United States

Member since September 22, 2014
Steven is a full-stack software engineer and web developer with nearly a decade of experience working on large consumer projects for some of the world's most easily recognizable companies. Recently focused on DevOps, he is a smart and personable professional who can tackle solo or team challenges with equal ease.
Steven is now available for hire
Hire Steven

Portfolio

  • Dropbox
    Python, Puppet, Jenkins, VMware vSphere, Trac, Bitten, Bash
  • CommandIQ
    Python, AWS (EC2, Redshift, S3, boto), Python, Redis, RQ
  • Lumosity (Lumos Labs)
    Ruby on Rails, Chef, MySQL, Redis, Python, Nagios, Graphite, HAProxy, CentOS

Experience

  • Linux, 15 years
  • Python, 13 years
  • JavaScript, 8 years
  • Redis, 5 years
  • Git, 5 years
  • Flask, 4 years
  • Ruby, 3 years
  • DevOps, 3 years
Commerce Charter Township, MI, United States

Availability

Part-time

Preferred Environment

Vim, Firefox, Git, Linux, Terminal

The most amazing...

...thing I built in 24 hours was a distributed MySQL traffic replayer (dumping packets, parsing the MySQL protocol, filtering, distributing queries to clients).

Employment

  • Software Engineer, Release Engineering

    2015 - 2017
    Dropbox
    • Operationalized and automated manual processes related to desktop client builds (Windows, Linux, and OSX).
    • Maintained and improved the existing build system (Trac, Bitten, py.test) for desktop clients.
    • Designed and deployed a new desktop client build system using Jenkins, VMware vSphere, and Python.
    • Participated in on-call rotation for build issues.
    • Wrote custom puppet modules for OS X and Linux to provision build infrastructure.
    Technologies: Python, Puppet, Jenkins, VMware vSphere, Trac, Bitten, Bash

  • Senior Back-end Engineer

    2014 - 2015
    CommandIQ
    • Improved the reliability and functionality of back-end systems (data processing pipeline).
    • Used auto-scaling groups for deployment (Netflix-style red/black deploys of new AMIs).
    • Integrated Rollbar for better visibility of platform errors and exceptions.
    • Added monitoring via CloudWatch.
    • Managed a Redshift data warehouse cluster (data loading, unloading, monitoring, cluster resizing, etc.).
    Technologies: Python, AWS (EC2, Redshift, S3, boto), Python, Redis, RQ

  • Senior Software Engineer, Operations

    2012 - 2014
    Lumosity (Lumos Labs)
    • Fixed hardware failures, network failures, MySQL and Redis crashes, bad deploys, DDoS attacks, failed maintenance windows, and more at all hours of the day.
    • Managed 150 dedicated servers (dedicated hardware from SoftLayer).
    • Sharded and scaled clusters for MySQL, Redis, and Memcached.
    • Added automation and monitoring for all levels of the stack.
    • Managed configuration with Chef and Ansible.
    Technologies: Ruby on Rails, Chef, MySQL, Redis, Python, Nagios, Graphite, HAProxy, CentOS

  • Software Engineer, Operations

    2011 - 2012
    Lolapps
    • Rewrote copy-pasted Bash deployment scripts as clean, re-usable Python code (with Fabric).
    • Migrated internal Subversion repos to Git and GitHub.
    • Set up a continuous integration and deployment system using Jenkins.
    • Implemented automated rolling of MySQL table partitions to safely rotate out old data on live database servers.
    • Helped manage 200+ dedicated servers in many capacities including provisioning, automation, and maintenance.
    Technologies: Python, Pylons, Fabric, Bash, MySQL, MongoDB, Memcached, HAProxy

  • Software Engineer

    2008 - 2011
    ePrize
    • Built online promotions for top brands such as Xbox, Disney, Gap, Condé Nast, Dell, and Coca-Cola.
    • Led development on Xbox Live Rewards.
    • Built custom CMS and internationalization functionality on top of Django.
    • Did back-end engineering work for large scale email marketing campaigns via ExactTarget.
    • Developed Facebook applications.
    • Integrated and built data exchanges for clients using a broad range of technologies (SOAP, REST, SFTP, Java, C#, Perl, Python, etc.).
    • Created custom reports and dashboards for clients to help them visualize their programs' metrics.
    Technologies: Perl, JavaScript, Python, Django, Web services (REST, SOAP), MySQL, Facebook Graph API, Twitter API

  • Robotics Lab Assistant

    2005 - 2007
    Lawrence Technological University
    • Built software to generate thousands of pages of printed material for Robofest competitions (certificates, name badges, signs, etc.).
    • Did web development for Robofest.net using Java, JSP, and Python.
    • Taught classes and led workshops on robotics for people of all ages (grade school through adult).
    • Helped organize and run Robofest events.
    • Conducted systems administration for robotics and computer labs on campus (Linux, Windows, Solaris).
    Technologies: Java, Python, C, C++, Robotics, SVG

Experience

  • Journal of Brief Ideas (Development)
    https://github.com/physicsdavid/journalofbriefideas

    An open access journal (like arXiv) for scientific ideas. Winner of the Communications category at Science Hack Day SF 2013.

  • OpenXC Taximeter (Development)
    https://github.com/lost-theory/ingenuity-taxi

    A program that shows drivers the real-time cost of their trip using data from OpenXC. Winner of Best Use of Data at BoingBoing Ingenuity 2013.

  • Xbox Live Rewards (Development)
    http://rewards.xbox.com/

    Microsoft's loyalty program for Xbox Live members. I built out the back-end (integrating with Xbox Live and partners), CMS functionality and internationalization, and front-end features (surveys, data visualization, other interactive functionality).

  • Disney Movie Rewards (Development)
    http://www.disneymovierewards.go.com/

    Disney's movie rewards program. I performed maintenance and built out custom functionality including custom reporting, promotions, and integration with Disney and other vendors.

  • My StackOverflow profile (Other amazing things)
    http://stackoverflow.com/users/75956/lost-theory

    Rated top 10% for Python development.

Skills

  • Languages

    Python, JavaScript, SQL, Ruby, Perl

  • Frameworks

    Flask, Pylons, Ruby on Rails (RoR), Django

  • Tools

    Nagios, GitHub, Git, Mercurial, Subversion (SVN), Adobe Photoshop, Audacity, Paint.NET, Inkscape

  • Platforms

    Linux, MacOS, Android, Windows, Mailgun

  • Storage

    Redis, Memcached, MySQL, Redshift, PostgreSQL, MongoDB

  • Other

    Graphite, Tornado

  • Paradigms

    DevOps, Object-oriented Programming (OOP), Functional Programming, Agile Software Development, Asynchronous Programming, Scrum, Concurrent Programming

  • Libraries/APIs

    Twilio API, Twitter API, Underscore.js, jQuery, Facebook API

Education

  • Bachelor of Science degree in Computer Science with a minor in Mathematics
    2003 - 2008
    Lawrence Technological University - Southfield, Michigan
Hire the top 3% of freelance developers
toptal.com
Call us: +1.888.604.3188
To view more profiles, join ToptalJoin Toptal
I really like this profile
Share it with others