Jason Jones, Developer in Scranton, PA, United States
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Jason Jones

Verified Expert  in Engineering

Software Developer

Scranton, PA, United States
Toptal Member Since
October 15, 2014

Jason is a full-stack developer with a keen eye for design and over 20 years of experience. As a self-taught developer, his approach has always been to identify the necessary skills required to tackle the challenges and confront them with determination. He has never met a challenge he couldn't overcome. Jason consistently meets deadlines and has a track record of leaving satisfied clients and managers in his wake.


Calm.com, Inc.
JavaScript, React, Node.js, PostgreSQL, Express.js, Docker, Stripe API, CSS...
EY Global Innovation
Amazon Web Services (AWS), MySQL, UX Design, CSS, JavaScript, CSS3, Sass, React...
Ramda, Redux, React, UI Design, CSS, JavaScript, CSS3, Git, Node.js




Preferred Environment

OS X, Windows, TypeScript, Visual Studio Code (VS Code), Linux, PostgreSQL

The most amazing...

...thing I've done recently was scaling a user interface to handle thousands of complex components at once.

Work Experience

Senior Front-end Engineer

2019 - 2020
Calm.com, Inc.
  • Contributed to planning, estimation, specification, and implementation of features across Calm's technology stack.
  • Implemented Google PageSpeed optimizations for Calm's primary website, including improvements to Webpack bundling and React implementation.
  • Implemented PostgreSQL full-text search improvements and contributed to the introduction of database migration workflow to ease production schema and data migrations.
  • Heavily customized an existing Python-based Stripe service mocking tool to unblock intermittent CI/CD pipeline test failures due to Stripe test service timeouts.
  • Took over full-stack development of fixes and long-awaited new features for neglected Node.js/React administration application that unblocked Calm's support team and improved customer satisfaction.
Technologies: JavaScript, React, Node.js, PostgreSQL, Express.js, Docker, Stripe API, CSS, CSS3, SQL, Git, TypeScript, SQLite

React/Node.js Engineer

2018 - 2018
EY Global Innovation
  • Provided full-stack development on an internal web application built with Node.js, MySQL, React, Java, and RabbitMQ.
  • Developed a REST API in Node.js to surface complex domain types and transformations originating in MySQL database and multiple remote services via their REST APIs.
  • Developed a React/Redux single-page application, utilizing single sign-on via SAML.
  • Managed both the database and Node.js application.
  • Developed and maintained CI/CD infrastructure for development, testing, and deployment to AWS.
Technologies: Amazon Web Services (AWS), MySQL, UX Design, CSS, JavaScript, CSS3, Sass, React, SQL, Git, Node.js, PostgreSQL, TypeScript, Express.js, SQLite

Senior React Engineer

2017 - 2018
  • Developed features using React, Redux, Ramda for internal application.
  • Used Styled library to implement site look and feel via CSS-in-JS.
Technologies: Ramda, Redux, React, UI Design, CSS, JavaScript, CSS3, Git, Node.js

Software Development Engineer

2015 - 2017
  • Maintained and improved an in-house front-end framework to maximize developer productivity and minimize latency on over 94% of Amazon.com retail website page views. Brought the four-year-old framework up to WCAG AA accessibility standards while reducing the overall file size.
  • Architected a custom isomorphic front-end platform and API controller for Amazon Prime Now using React/Redux on the client and SpringMVC on the server. The platform was designed to be highly configurable and usable by developers with little to no front-end/JavaScript experience.
  • Contributed to the Amazon retail app, Prime Now app, FireTV, and numerous other cross-discipline platforms and internal tools at Amazon.
Technologies: Python, Java, Ruby, JavaScript, CSS, jQuery, CSS3, Sass, Less, SQL, Git, Node.js, Express.js, MySQL

Web Developer

2012 - 2014
Unitrends, Inc.
  • Developed a web UI for virtual machine backup software using Python and Django.
  • Built a custom JavaScript framework supporting the development of modular UI components with tight jQuery UI integration.
  • Contributed to visual design and mockups for two major versions.
  • Extended Django's form system to handle infinitely-nested inline forms and support dynamic creation of said forms on the client.
  • Scaled multiple rich UI components to handle datasets in the tens of thousands with rich, complex controls and business logic.
Technologies: Django, Python, UX Design, UI Design, CSS, JavaScript, jQuery, CSS3, PostgreSQL, Django REST Framework, SQLite, AngularJS

Interactive Media Manager

2007 - 2011
Peak Resorts
  • Took sole responsibility for the design and development of marketing sites and internal tools.
  • Coordinated with marketing teams to produce feature-rich information sites for a number of brands.
  • Contributed to marketing efforts including copy writing, ad and billboard design, and campaign management.
  • Created internal communication and media management tools to facilitate knowledge sharing and best practices.
  • Created custom webcam software that helped reduce bandwidth and support more concurrent users.
Technologies: JavaScript, CSS, Python, PHP, UX Design, UI Design, jQuery, CSS3, Less, SQL, MySQL

Unitrends Virtual Backup

UVB is virtual machine backup and replication software that empowers system administrators to manage and protect their entire virtual environment with one easy-to-use web interface. The UVB 9 interface was implemented in Django with a custom jQuery-based front end.
2002 - 2007

Undergraduate Coursework towards a Degree in English and Professional Writing

Kutztown University - Kutztown, Pennsylvania


React, Node.js, jQuery UI, jQuery, NW.js, Selenium WebDriver, Tastypie, Underscore.js, Moment.js, Stripe API, Ramda


Adobe Creative Suite, Sublime Text 3, Sublime Text 2, Git, Subversion (SVN), Microsoft Visual Studio, Flash


Redux, Express.js, Django REST Framework, Django, AngularJS, Knockout (Knockout.js), Flask


Sass, CSS3, CSS, Less, JavaScript, TypeScript, HTML5, SQL, Python, ActionScript 3, PHP, Ruby, Java, HaXe, C#


Object-oriented Programming (OOP), UX Design, Object-oriented Design (OOD), UI Design, Asynchronous Programming, Web UI Design, Web UX Design


Windows, MacOS, Docker, OS X, Ubuntu, Amazon Web Services (AWS), Linux, Visual Studio Code (VS Code)


PostgreSQL, SQLite, MySQL


Documentation, Writing & Editing, Technical Writing, Public Relations (PR)

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