Sr. Ruby on Rails Developer. ( W2 or Self Incorp Only )

Our client which is a large pharmaceutical org is urgently looking to hire a Sr. Ruby on Rails Developer.Sr. Ruby on Rails Developer.100 % Remote.EST or CST Timings.This role requires Offshore/NearShore Coordination.W2 or Self Incorp Only ( No 1099 or Vendor Based resumes )Required Skills - Ruby on Rails, Sidekiq or Resque, Cloud - AWS, MicroservicesDomain - Pharma or Clinical Trials.We are seeking a skilled and innovative Ruby on Rails Developer to design, build, and maintain robust full-stack web applications. In this role, you will lead backend logic development, manage central databases, and ensure top performance across all user-facing services. You will work closely with frontend developers, product managers, and designers to turn business requirements into clean, production-grade solutions.Core ResponsibilitiesWrite Code: Design, build, and maintain clean, efficient, and scalable Ruby code.Develop APIs: Construct secure, RESTful APIs for frontend consumption and third-party integrations.Manage Data: Optimize database schemas, query performance, and data modeling using ActiveRecord.Build Tests: Implement automated unit and integration test suites using RSpec, Capybara, or FactoryBot.Optimize Performance: Identify and fix bottlenecks, memory leaks, and application performance errors.Maintain Security: Integrate authentication/authorization protocols and address software vulnerabilities.Handle Background Tasks: Set up background job processing queues using Sidekiq or Resque.Collaborate: Participate in Agile ceremonies, continuous integration sprint reviews, and peer code reviewTechnical RequirementsFramework: 4+ years of professional experience working exclusively with the Ruby on Rails ecosystem.Databases: Strong proficiency in relational databases like PostgreSQL or MySQL using SQL.Frontend Basics: Functional understanding of HTML5, CSS3, modern JavaScript, and asset compilation.State Management: Mastery of MVC (Model-View-Controller) architecture patterns and Object-Oriented Design.Gems & Tools: Prior experience using standard Rails gems like Devise, Pundit, and Webpacker.Version Control: Absolute proficiency with Git workflow commands and cloud hosts like GitHub.DevOps Basics: Experience with deployment automation platforms like Heroku, Docker, or AWS infrastructure