Jonathan Castillo
Software Developer

Jonathan Castillo

Senior Software Engineer at Bark.
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About

Jonathan Castillo is a senior software engineer with over 10 years of experience specializing in JavaScript, Ruby, HTML, and CSS. At Bark, he was the lead engineer for the launch of several projects, and updated iOS and Android apps using React Native to support device compatibility. He also built product iterations to help increase subscription conversion. He also worked for Crownpeak as a principal engineer for Tag Control, a product that Fortune 500 clients used. His core competencies include Ruby, Javascript, Ruby on Rails, Vue.js, React Native, Angular, Node.js, HTML, CSS, and Firebase.

Employment

6 roles
Sep 2019 - Present 6 years 8 months
Senior Software Engineer
Bark
  • Was a lead engineer for the launch of the Extra Toy Series on BARK's Add To Box experience.
  • Updated iOS & Android apps (React Native) to support purchasing new subscriptions in a web view.
  • Updated checkout to support address and payment method reuse for existing subscribers.
  • Was a lead engineer for the launch of Bright subscription funnel MVP.
  • Tasked with building product iterations that help increase subscription conversion.
Apr 2019 - Present 7 years 1 month
Developer
Poll Sports
  • Provided fantasy football advice that is credible and customized to your league settings.
  • Designed and developed the web experience from the ground up.
Aug 2017 - Aug 2019 2 years
Software Engineer
Crownpeak
  • Was a Principal Engineer for Tag Control, a product that was used by Fortune 500 clients.
  • Developed and built the Tag Control UI with Angular 7.
  • Developed the Tag Control Javascript tag that was integrated into customer websites.
  • Maintained Evidon Tools, a browser extension built with Backbone JS.
Feb 2017 - Aug 2017 6 months
Software Engineer
Evidon from Crownpeak
  • Solved problems using a combination of Javascript, HTML, CSS, and Ruby.
  • Was responsible for maintaining Evidon's legacy Ruby on Rails Ad Notice UI which at the time of employment helped generate over $7M/year in revenue.
  • Developed Critical Path Monitoring, a B2B web application built using Angular.js and Sails.js.
Aug 2013 - Feb 2017 3 years 6 months
Software Engineer
Ghostery Inc
  • Was a developer on the Ghostery browser extension which at the time of employment had an estimated 10 million unique users.
  • Was responsible for front-end engineering and UI design updates.
  • Implemented "Purple Box", a popular feature amongst many Ghostery users.
  • Implemented signup and login pages for Ghostery version 7 using HTML, SASS, and Javascript.
  • Worked on a scrum/agile environment which shipped code updates to production every two weeks.
Oct 2012 - May 2013 7 months
Jr Software Engineer
Vestorly
  • Worked in a team environment utilizing Ruby, Rails 3, HTML, & CSS.
  • Worked closely with co-founders to discuss updates and recommended solutions.
  • Designed and maintained Ruby on Rails code that implemented upgrades, patches, and database changes.

Education

Jul 2007 - Apr 2011 3 years 9 months
Bachelor's Degree, Business Administration and Management
Boston University Questrom School of Business

Portfolio

1 item