Johnathan Wolff, Developer in Palm Bay, FL, United States
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Johnathan Wolff

Verified Expert  in Engineering

Full-stack Web Developer

Palm Bay, FL, United States

Toptal member since December 24, 2024

Expertise
Full-stackLinuxGitGitHubJavaScriptjQueryBootstrapCSSRubyRuby on RailsHerokuPHPLaravelAPI
Bio

Johnathan is a full-stack web developer with 9+ years of experience building scalable web applications. Specializing in back-end development with Ruby on Rails and front-end technologies like Vue and jQuery, he excels in creating RESTful APIs, designing efficient databases, and delivering seamless user experiences. Experienced in deploying apps on AWS and Heroku and proficient in Linux command-line interfaces, Johnathan collaborates with remote teams and adapts quickly to evolving project needs.

Portfolio

InjuryScripts
Ruby, Ruby on Rails (RoR), PostgreSQL, RSpec, Redis, JavaScript, jQuery...
CannaSafe
Ruby, Ruby on Rails (RoR), RSpec, PostgreSQL, JavaScript, Vue, jQuery, Git...
FountainHeadME
Laravel, PHP, MySQL, Vue, JavaScript, Bootstrap, Google Analytics, REST APIs...

Experience

  • Linux - 10 years
  • SQL - 9 years
  • JavaScript - 9 years
  • Vue - 7 years
  • Ruby - 6 years
  • PHP - 5 years
  • Ruby on Rails (RoR) - 5 years
  • Laravel - 4 years

Availability

Part-time

Preferred Environment

Ruby, JavaScript, Vue, Linux, Heroku, Git, RSpec, Ruby on Rails (RoR), PostgreSQL, Redis, Amazon Web Services (AWS)

The most amazing...

...project I've worked on was migrating the cloud infrastructure of a Rails app from Heroku to AWS using AWS Copilot, reducing operational costs by 30%.

Work Experience

Senior Ruby on Rails Developer

2022 - 2024
InjuryScripts
  • Migrated cloud infrastructure from Heroku to AWS, achieving over 30% reduction in operational costs and boosting application performance metrics by approximately 20%.
  • Redesigned and streamlined customer checkout process, resulting in a 30% increase in conversion rates with an improved user experience, decreasing friction in obtaining payments.
  • Upgraded a Ruby on Rails app from 5.1 to 7.1, Ruby 2.7 to 3.3, and PostgreSQL from v10 to 16, cutting CPU/memory usage, boosting scalability, reducing standby Heroku dynos, reducing patient checkout response times while lowering infrastructure costs.
Technologies: Ruby, Ruby on Rails (RoR), PostgreSQL, RSpec, Redis, JavaScript, jQuery, AWS IoT, Heroku, Git, REST APIs, CSS, HTML, Amazon Web Services (AWS), Redis Cache, GitHub, APIs, Full-stack, Technical Leadership, Third-party APIs, Leadership, Ruby on Rails 5, MVC architecture

Senior Ruby on Rails Developer

2021 - 2022
CannaSafe
  • Engineered robust Ruby on Rails solutions to streamline laboratory operations, enhancing inventory tracking and chain of custody processes while ensuring accurate certificates of analysis for 500+ samples with completed lab results monthly.
  • Implemented a modern redesign of the certificate of analysis document with an HTML to PDF Ruby library.
  • Integrated the Confident Cannabis Laboratory Information Management System (LIMS) API to synchronize client data seamlessly.
Technologies: Ruby, Ruby on Rails (RoR), RSpec, PostgreSQL, JavaScript, Vue, jQuery, Git, Heroku, REST APIs, CSS, HTML, Amazon Web Services (AWS), Redis Cache, GitHub, APIs, Full-stack, Technical Leadership, Third-party APIs, Leadership, Ruby on Rails 5, MVC architecture

Full-stack Web Developer

2020 - 2021
FountainHeadME
  • Designed and implemented custom eCommerce solutions for small to medium-sized businesses using LAMP stack technologies and Laravel, delivering unique and highly engaging shopping experiences.
  • Optimized email marketing efforts by integrating Mailchimp for targeted newsletter signups and abandoned cart recovery, resulting in increased user engagement and higher conversion rates.
  • Integrated Affirm's flexible payment options into an existing Laravel-based eCommerce platform, enhancing the checkout system with seamless, secure payment processing.
  • Crafted intuitive UI elements with Vue, ensuring seamless functionality and responsiveness through design principles aligned with industry best practices.
Technologies: Laravel, PHP, MySQL, Vue, JavaScript, Bootstrap, Google Analytics, REST APIs, CSS, HTML, Amazon Web Services (AWS), MariaDB, Redis Cache, eCommerce, GitHub, APIs, Full-stack, Technical Leadership, Third-party APIs, Leadership, MVC architecture

Senior Ruby on Rails Developer

2019 - 2020
Line5
  • Oversaw the development of an innovative quoting system that streamlined operations, reducing quote generation time by 80% and significantly boosting automotive protection plan conversions.
  • Produced high-quality, maintainable code in adherence to Rails best practices, achieving over 90% unit test coverage with RSpec to ensure robust reliability before production deployments.
  • Spearheaded projects by mentoring junior developers, providing technical guidance, and ensuring the timely and high-quality delivery of features.
Technologies: Ruby, Ruby on Rails (RoR), RSpec, PostgreSQL, JavaScript, jQuery, React, Heroku, ZURB Foundation, Redis, REST APIs, CSS, HTML, Redis Cache, GitHub, APIs, Full-stack, Technical Leadership, Third-party APIs, Leadership, Ruby on Rails 5, MVC architecture

Full-stack Web Developer

2017 - 2019
Catered Fit
  • Automated the generation of tailored meal preparation reports aligned with customer dietary preferences, eliminating eight hours of daily manual data entry and streamlining kitchen operations.
  • Implemented a responsive front-end interface for meal selection with AngularJS and Bootstrap, enhancing customer engagement by allowing users to seamlessly navigate menu options weekly.
  • Developed a Vue-based menu builder interface in collaboration with the operations team, enabling kitchen chefs to add custom menu entries for diverse meal plans easily.
Technologies: Laravel, PHP, MySQL, Redis, Vue, JavaScript, Angular, REST APIs, CSS, HTML, Amazon Web Services (AWS), MariaDB, Redis Cache, GitHub, APIs, Full-stack, Technical Leadership, Third-party APIs, Leadership, MVC architecture

Full-stack Web Developer

2016 - 2017
Synechron
  • Collaborated with a multidisciplinary team of developers and designers in the tech consulting sector to deliver end-to-end full-stack web development projects.
  • Cooperated with web designers to create custom, responsive static websites using HTML5 and Jekyll, including simple blog functionality for client needs.
  • Mentored newly onboarded interns and junior developers on key programming concepts and Git workflow strategies, leading to quicker project ramp-ups and successful integration of intern contributions into production within three weeks.
Technologies: Ruby, Ruby on Rails (RoR), Laravel, PHP, PostgreSQL, MySQL, Redis, Linux, Angular, jQuery, JavaScript, Jekyll, REST APIs, CSS, HTML, MariaDB, Redis Cache, eCommerce, GitHub, APIs, Full-stack, Technical Leadership, Third-party APIs, Leadership, MVC architecture

Full-stack Web Developer

2015 - 2016
Tofani Co.
  • Managed a team of interns in developing full-stack web applications for startup clients.
  • Engineered robust back-end solutions using the Laravel MVC framework, optimizing database interactions with the Eloquent ORM on MySQL databases.
  • Developed custom user interfaces using JavaScript frameworks such as Vue, AngularJS, and Bootstrap.
Technologies: Laravel, PHP, MySQL, Redis, Linux, Ubuntu, Vue, Angular, JavaScript, Bootstrap, REST APIs, CSS, HTML, MariaDB, Redis Cache, eCommerce, GitHub, Full-stack, Technical Leadership, Third-party APIs, Leadership, MVC architecture

Experience

Ruby Gem

https://rubygems.org/gems/devise-twilio-verify
I developed a Ruby gem to replace the deprecated Devise Authy gem. The Ruby gem is now actively used in numerous web applications, with over 13,000 downloads on RubyGems. This library seamlessly integrates the widely adopted Devise authentication framework with the Twilio Verify API, facilitating the smooth implementation of SMS and/or time-based one-time password (TOTP) two-factor authentication (2FA) for user login.

Education

2013 - 2015

Associate Degree in Information Technology

Brown Mackie College - Miramar, FL, USA

Certifications

AUGUST 2016 - PRESENT

Linux+

CompTIA

Skills

Libraries/APIs

jQuery, Vue, REST APIs, Twilio API, Devise, React

Tools

Git, RSpec, GitHub, Google Analytics, Jekyll

Languages

Ruby, JavaScript, PHP, CSS, HTML, SQL

Frameworks

Laravel, Ruby on Rails (RoR), Bootstrap, Ruby on Rails 5, ZURB Foundation, Angular

Platforms

Linux, Heroku, Ubuntu, AWS IoT, Amazon Web Services (AWS)

Storage

PostgreSQL, MySQL, Redis, MariaDB, Redis Cache

Other

Full-stack, MVC architecture, Computer Repair, eCommerce, APIs, Technical Leadership, Third-party APIs, Leadership, IT Networking, Software Development, Two-factor Authentication (2FA)

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