Full-Stack Engineer

Led a zero-downtime upgrade of a live multi-subsite CMS from Ruby on Rails 5.2 to 7.2 and Ruby 2.6 to 3.2. Resolved compatibility issues involving Zeitwerk autoloading, YAML alias deprecations, and ActionController::Parameters serialization changes.

Designed independent Capistrano 3 deployment pipelines for staging and production environments, including rbenv, ed25519 SSH keys, bastion-host proxy configuration, and the Sprockets 4 manifest migration. Migrated proprietary CMS gems to Gemfury and updated Bundler authentication pipelines.

Built scheduled publishing automation using a ScheduledProductPublisher service, Whenever cron jobs, and Capistrano hooks. Resolved production incidents, created verification scripts and response playbooks that reduced operational toil by 70%, improved admin query performance by more than 20%, and implemented Sentry and New Relic monitoring.

Contracted to build backend infrastructure for a live healthcare platform that connects patients and doctors for in-person, home-based, and virtual consultations. Architected radiology and ultrasound workflows with validated state transitions, image upload services, and supporting models.

Built service objects for home-based care linking, integrated Cloudinary with ActiveStorage for doctor contract storage, and diagnosed a StringIO issue that caused silent empty uploads. Implemented Zoom API integration for virtual consultation creation with test-friendly mock fallbacks.

Developed the Patient Dashboard API for profile management, bookings, payment history, appointment reminders, and Prawn-generated invoices. Hardened authentication with rate limiting, JWT expiry and refresh flows, API-key validation, Pundit authorization, and OTP/2FA, while standardizing API datetime serialization to UTC ISO8601.

Mentored more than 10 full-stack developers in Ruby on Rails and React.

Guided developers on code quality, architectural design, production readiness, and practical full-stack development practices.

Completed more than 1,300 hours of intensive programming education covering algorithms, data structures, and full-stack web development. Obtained certificates in HTML, CSS, JavaScript, Ruby, and Ruby on Rails. Developed remote collaboration skills through GitHub, git-flow, and daily standups.