Hammad Masood

I’m a Staff Backend Engineer with 9+ years building production backends across Ruby on Rails and Node.js, delivering end-to-end ownership from schema design to production monitoring. I specialize in performance tuning, reliable job processing, and pragmatic API design.

At WeGuide, I owned the core Rails backend end-to-end for a digital health & clinical research platform serving thousands of healthcare users. I integrated Stripe subscriptions and webhook handling, cut application latency by 40%+ through PostgreSQL query rewriting, Redis caching, and Sidekiq queue restructuring, and shipped RESTful endpoints and reporting workflows directly against product specs.

I also lead with engineering standards and security-by-design: I built HIPAA-compliant healthcare analytics and AWS Cognito SSO integrations, introduced RSpec test suites, and mentored engineers in Rails best practices and TDD. More recently, I’ve built AI-powered research workflows using autonomous subagents with Anthropic and OpenAI APIs, improving clinical data parsing measurably.