• Specialized in upgrading Ruby on Rails applications from older versions to the latest versions• Created API(s) for organizations central applications• Implemented OAuth security and 2FA authentication protocols• Specialized in creating native Javascript-HTML Web Components, integrating them with View Components• Specialized in Elasticsearch-Redis for Ruby on Rails applications• Implemented native SQL to create fast and efficient natural language text searches in SQLite3 and MySQL databases.• Integrate user-facing elements developed by front-end developers with server-side logic

• Upgraded security framework.• Upgraded asset pipeline from Webpacker to new import maps.• Implemented an SPA-like user-facing elements with web components using technologies such as HTML custom elements, View Components with Stimulus and Hotwire.• Updated the tests to include more functional and integration checks with RSpec and Capybara.Improved rendering efficiency by 130%, and improved queries by 50% on average.

• Developed and maintained applications in small teams using Ruby versions from 1.9 to 3.1,Rails 4.2 to 7, JavaScript, jQuery, CoffeScript, HTML, CSS, Bootstrap and SLIM;• Used the entire Rails language and features’ system to build views, controllers, models, viewhelpers, model concerns, decorators, and Stimulus controllers;• Followed Agile development methodology and scrum for the project using Jira and PivotalTracker project management toolsets;• Performed code reviews, bug tracking, debugging, SQL query optimization;• Implemented database architecture for applications using Postgres and/or MySQL;• Coded using TDD with RSpec, Capybara

• Created GUI application using QT, an interface to interact with remotely operated vehicles (tele-operations). The application displayed dynamic vehicle diagnostics; GPS location, vehicle positional data, and vehicle data.• Used several open-source libraries, such as OpenCV, FFMPEG, SDL2, x264, Flatbuffers• Experience with maintaining and merging into master branch on GitLab

Provided all financial oversight of the investments, debt management and accounts payable and receivable, inventory management, preparation of financial reports of multiple retail-based businesses, as well as co-managed the teams of employees.

Created human relations management tool for the company to aid in the management and payroll for the employees. Implemented the application stack, from development to maintenance, with Ruby on Rails, Devise, Refinery CMS, PostgreSQL Heroku and Active Storage, Bootstrap, HTML5, CSS, jQuery, WebPacker and more.

Active and inactive reserves

US Nuclear Risk Reduction Center

Translated, interpreted, and analyzed information related to disarmament treaties.