Michael Silverio

I've built Rails applications and integrations for Cognith, Upwork clients, Sun Asterisk, and HP Ventures, spanning cargo shipment, job portal, event discovery, registration, ecommerce, and HR systems.

For recent freelance projects, I upgraded a registration system from Rails 4.2 to Rails 5, resolved a critical Stripe gem security issue, and built integrations for volunteer accreditation and background checks. I also built ETL pipelines for Shopify, Linear, and ErpNext, plus a RubyLLM-powered Chat with Data feature that turns user queries into tables and charts.

At Cognith, I delivered analytics dashboards, CSV bulk uploads, audit features, Zoho CRM synchronization, document parsing, push notifications, and real-time chat improvements. I replaced Google Geocoding with OpenStreetMap to unblock proximity search and maintained over 95% test coverage for newly developed features through TDD.

I'm comfortable working across Ruby on Rails, React, PostgreSQL, AWS, APIs, webhooks, OAuth2, and CI/CD. I enjoy modernizing legacy systems, translating Figma designs into working interfaces, and building practical tools that make operations smoother.