Lance Ennen's Resume

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Lance Ennen is a software entrepreneur with a passion for startups and new technologies. He's a leader with experience building startups, building software development teams, and is a software craftsman. Lance has been writing code since sophomore year of High School. He's worked with great companies like Clear Channel, Midway Games, Obtiva (acquired by Groupon), CouponTrade (now Raise), RECSOLU (now Yello), Big Astronaut (acquired by Factor 75), Douglas Elliman, LexisNexis, Sears, Leapfrog Online, GE Capital, Camping World and Payroc. Lance has years of experience in computer science, machine learning, artificial intelligence, algorithms, data mining, ecommerce, pci compliance (credit card security). He's built an ISO provider call Payroc. He's also worked with Stripe and Braintree API. Currently, Lance is helping clients around the world under ByEnnen his freelance application development company.


Mobile and Web Application development, Ruby, Rails, Javascript, ReactJS, React-Native, Swift, Meteor, Cordova, Node.js, MongoDB, Amazon Web Services, Git, Agile processes and methodology, RSpec, SQL, TDD, BDD


Principal Software Engineer at ByENNEN

March 2007 – Present

My freelance application development company. Focused on Mobile + Web applications.

  • Ruby on Rails
  • Javascript
  • Node
  • React
  • React-Native
  • GraphQL
  • Restful APIs
  • Block Chain
  • Data Engineering

Online portfolio of work can be seen at

Senior Software Engineer (Ruby on Rails) at Cloud Logistics

May 2017 – December 2017

Helped build and refactor Cloud Logistics same day TMS ruby on rails platform.

Senior Software Engineer (Ruby on Rails, React, React-Native, Machine Learning) at Health Hero, Inc

December 2016 – May 2017

Automated Calls & Texts – Via Artificial Intelligence. Built and scaled Health Hero's ruby on rails and react- native app for patient engagement.

Senior Software Engineer (Ruby on Rails, Javascript, Swift) at Camping World and Good Sam

December 2016 – May 2017

Ruby on Rails support for multiple apps. Created and maintained Camping World and Good Sam IOS registration app for events.

Director of Engineering Consultant (Node, Javascript) at Payroc

April 2015 – April 2016

Launched Payroc's web, mobile, and API for setting up independent sales organizations for merchant processing. Using multiple APIs and Vantiv backend for underwriting.

Senior Software Engineer Consultant (Ruby on Rails, Swift, Java) at Bridj

January 2015 – July 2015

Lead engineering team and provided support for Ruby on Rails API, IOS apps, and andriod app.

Director of Engineering Consultant (Node, Javascript) at Douglas Elliman Real Estate

May 2014 – May 2015

Built an Intranet to manage everything in one place for Douglas Elliman’s real estate agents.

Director of Engineering Consultant (Ruby on Rails) at Factor 75

June 2013 – October 2014

Launched Factor75 and scaled the Ruby on Rails engineering team.

Director Of Engineering (Ruby on Rails) at

November 2012 – June 2013

Lead development team to build the future of student recruiting using APIs for mobile apps to scan QR codes to import resumes into recruiters dashboard and allow them metrics that were unheard of with paper.

Senior Software Engineer Consultant (Ruby on Rails, MongoDB, Elasticsearch) at LexisNexis

December 2011 – November 2012

One of 3 remote software engineers on At the time this was the largest MongoDB and Elasticsearch site on the web. Rewrite from .NET to Ruby on Rails.

Senior Software Engineer Consultant (Ruby on Rails) at Raise

April 2011 – December 2011

Launched and maintain Speecommerce site built on Ruby on Rails. I also help scale the engineering team and hire the CTO.

Software Engineer Consultant (Ruby on Rails, Javascript) at Sears Holdings Corporation

November 2010 – September 2011

Managed projects for Sears Holdings Corporation, building out in Ruby on Rails.

Software Engineer Consultant (Ruby on Rails, Javascript, Python) at Obtiva

May 2009 - September 2011

Designed and built the website in Ruby on Rails. Obtiva, one of Chicago’s largest software consultancies with 60 full-time employees, was acquired by Groupon in 2011.

Software Engineer Consultant (Ruby on Rails, Django, Python) at Leapfrog Online

December 2009 – November 2010

Built out, scaled and refactored Leapfrog Online Django Landing Page platform. Helped build Ruby on Rails landing page platform. Planned and carried out daily scrums, weekly estimations and retrospectives, and pair programming.

Software Engineer Consultant (Ruby on Rails) at Sears Holdings Corporation

April 2011 – December 2011

Managed projects for Sears Holdings Corporation, building out in Ruby on Rails.

Director Of Technology (.NET, Ruby on Rails) at ReachMD

March 2008 - May 2009

Provided support for four ASP.NET applications while guiding a rewrite in Ruby on Rails. Increased overall satisfaction with internal technology services including response/resolution time for end user support requests and performance of company-facing applications. Worked on the development of ReachMD CME iPhone App, featured in "What's Hot" on iTunes.

Software Engineer (Ruby on Rails) at The Killswitch Collective

April 2007 - March 2008

Developed and supported Ruby on Rails applications for Chicago software consulting firm. Created and maintained custom content management systems using Restful Rails. Developed JavaScript incentives for web applications.

Software Engineer (PHP) at Cherryone

February 2006 - April 2007

Developed custom dynamic websites for a customers nationwide ranging from startups to global corporations. Using PHP, SQL, HTML, JavaScript, Photoshop, Illustrator, Flash and various alternative technologies.

Quality Assurance Analyst at Midway Games

May 2005 - December 2005

Collaborated with game programmers and artists to ensure quality code in the creation of Mortal Kombat: Shaolin Monks.

Remote Technician at Clear Channel Communications

January 2003 - May 2005

Organized and set up promotional events for four Clear Channel stations in Phoenix, Arizona.


University of Advancing Technology

Bachelors of Multimedia, Game Design

2003 – 2005

Activities: Game Developer Conference, E3, 03, 04, 05

University of Iowa

Coursework toward Bachelor of Science in Communications

Societies: Pi Kappa Alpha.


Manage apprenticeship program for software developers at BYENNEN, LLC

Avid participant in Ruby user groups in Chicago, Miami and Los Angeles

Active contributor to the open source community

Speak at and participate in conferences, software developer groups, and educational forums, Geekfest at Groupon, Social Dev Camp, TechWeek, Windy City Rails, Lean Startup, BuiltInChicago, Refresh Chicago Meetup, and Software Craftsmanship North America.

Reference List: By Request - Contact