Mikael Kessler, Developer in Charlotte, NC, United States
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Mikael Kessler

Verified Expert  in Engineering

Software Developer

Charlotte, NC, United States
Toptal Member Since
September 10, 2014

Mikael is a software engineer with 9+ years of experience at companies in the earliest stages and behemoths of their industry. As a full-stack developer, he primarily utilizes Ruby on Rails on the back end and Vue.js or React to create modular front ends. Mikael has recently been developing a Rails-based RESTful API following the JSON:API spec to maximize performance and scalability. He has extensive experience with Ruby on Rails, PostgreSQL, Heroku, Netlify, etc.


GitHub, Netlify, Vue, Graphiti, Heroku, PostgreSQL, Ruby on Rails (RoR)...
GitHub, React, MySQL, Ruby on Rails (RoR), Ruby, Bootstrap
GitHub, MySQL, Ruby on Rails (RoR), jQuery, CSS3, HTML5, Ruby




Preferred Environment

GitHub, Netlify, React, Vue, Sidekiq, Heroku, PostgreSQL, Ruby on Rails (RoR), GraphQL, Ruby

The most amazing...

...thing I've done is work with some of the world's most recognizable brands to develop apps that bring their creative visions to life.

Work Experience

Lead Software Engineer

2019 - 2020
  • Co-developed an API powering Cloosiv's mobile ordering applications.
  • Co-developed front-end tools for both Cloosiv clients and internal users.
  • Developed integrations to strengthen Cloosiv platform and value for clients.
Technologies: GitHub, Netlify, Vue, Graphiti, Heroku, PostgreSQL, Ruby on Rails (RoR), Bootstrap, Ruby

Senior Software Engineer

2015 - 2019
  • Served as the lead developer for an enterprise WordPress plugin.
  • Maintained and extended our plugin, offering development in PHP.
  • Extended vendor plugins to work seamlessly with our solutions.
  • Integrated the core TeamSnap product offering with our WordPress plugin via internal APIs.
Technologies: GitHub, React, MySQL, Ruby on Rails (RoR), Ruby, Bootstrap

Senior User Interface Engineer

2011 - 2015
  • Developed custom applications using Ruby on Rails, HTML, CSS, JavaScript, and MySQL.
  • Worked closely with back-end engineers to co-develop Ruby on Rails applications.
  • Implemented clients’ brand standards and style guides within Oracle's SRM platform.
Technologies: GitHub, MySQL, Ruby on Rails (RoR), jQuery, CSS3, HTML5, Ruby

Web Developer

2010 - 2013
Atlanta International Soccer Fest
  • Designed the event website to highlight the details of the event.
  • Developed a custom WordPress child theme to meet brand guidelines.
  • Developed custom Facebook applications to engage users.
Technologies: jQuery, CSS3, HTML5

Strategic Services Analyst

2011 - 2011
Vitrue, Inc.
  • Implemented enterprise clients’ social media initiatives.
  • Developed enterprise clients’ Facebook tabs using HTML, CSS, and JavaScript.
  • Trained clients on new and existing functionality of Vitrue’s SRM platform.
Technologies: jQuery, CSS3, HTML5

My Portfolio

A collection of projects I have developed in the past.


Ruby, HTML, CSS, JavaScript, HTML5, CSS3, GraphQL


Ruby on Rails (RoR), Bootstrap


Sidekiq, API Development, Vue, React, jQuery, Graphiti




Object-oriented Programming (OOP)


Heroku, Netlify


PostgreSQL, MySQL

2004 - 2009

Bachelor's Degree in Telecommunications

The University of Georgia - Athens, GA