Mark Grandjean, Software Developer in San Francisco, CA, United States
Mark Grandjean

Software Developer in San Francisco, CA, United States

Member since February 25, 2018
Mark graduated from Rose-Hulman Institute of Technology with a double major in Computer Science and Mathematics. Since then he has honed his web development skills working for startups, and consulting firms. He specializes in Ruby on Rails, with experience in several front-end libraries.
Mark is now available for hire


  • HomeLight
    Ruby on Rails, Ember.js, Postgres, JavaScript, HTML, CSS
  • Centro
    Ruby on Rails, Postgres, HTML, CSS
  • Sonoma Partners
    C#, .Net, Microsoft Dynamics, SalesForce


  • Ruby, 5 years
  • PostgreSQL, 5 years
  • Ruby on Rails (RoR), 5 years
  • HTML, 3 years
  • JavaScript, 3 years
  • CSS, 3 years
  • React, 1 year
  • Ember.js, 1 year


San Francisco, CA, United States



Preferred Environment

Sublime Text, Mac OsX, Git, Atom

The most amazing...

...project that I spearheaded was an internal sales tool system. We created a 3-part sales pipeline that dramatically increased sales KPIs.


  • Full Stack Software Engineer

    2015 - 2018
    • Integrated with Twilio to create an auto calling sales app, to increase the efficiency of our outbound sales team.
    • Created a priority queueing system in Redis to always show the internal sales team the next most valuable task.
    • Upgraded production system from Rails 3.2 to Rails 4.2.
    • Doubled test coverage and implemented a CI system to ensure the quality of pushed code.
    • Worked with the Director of Strategic Operations to completely rebuild the internal sales tools, using Ember.js.
    Technologies: Ruby on Rails, Ember.js, Postgres, JavaScript, HTML, CSS
  • Software Engineer

    2013 - 2015
    • Upgraded Internal Tools from Rails 2 to Rails 4.
    • Integrated System with Google Adwords Api.
    • Fixed Bugs in Legacy Production Application.
    • Mentored junior developers.
    • Created an indexing micro-service to support searching functionalities.
    Technologies: Ruby on Rails, Postgres, HTML, CSS
  • Consultant

    2012 - 2013
    Sonoma Partners
    • Used MVC architecture to create a custom CRM portal for Microsoft Dynamics.
    • Created an app to generate custom MS Word Reports from CRM data.
    • Developed custom plugins for MS Dynamics using C#.
    • Customized Kendo UI JavaScript library to integrate with Microsoft Dynamics.
    • Passed certification exams for both Microsoft Dynamics and Salesforce.
    Technologies: C#, .Net, Microsoft Dynamics, SalesForce


  • IdeasToStuff (Development)

    Custom 3D Printing Web Marketplace. Built from the ground up to support special concerns and requirements.


  • Languages

    Ruby, JavaScript, CSS, HTML
  • Frameworks

    Ruby on Rails (RoR), Ember.js
  • Paradigms

    Agile, OOO
  • Tools

    Sublime Text 3
  • Storage

  • Libraries/APIs



  • Bachelor's degree in Computer Science and Mathematics
    2006 - 2010
    Rose-Hulman Institute of Technology - Terre Haute, Indiana

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