Niroj S.

I help businesses build and scale reliable web applications, often working as the sole developer or leading backend development. With 14+ years of experience in Ruby on Rails, I’ve built and maintained production systems handling large datasets, high user volumes, and complex business logic — including payment systems, subscriptions, internal tools, and API-driven platforms. I’m comfortable owning the full development lifecycle: - Turning ideas or vague requirements into working MVPs - Designing clean, maintainable architectures - Scaling applications and optimizing performance - Collaborating with non-technical teams to deliver practical solutions Recent work includes: - Building a highly available Messaging system that can handle hundreds of thousands concurrent users. - Building a resilient payment and subscription system with retry logic and safeguards against duplicate charges - Developing internal tools to streamline workflows and improve operational efficiency Core skills: - Ruby on Rails, PostgreSQL, REST APIs - Background jobs (Sidekiq), caching, performance optimization - AWS, Docker, CI/CD pipelines - RSpec and testing strategies I’ve worked in different roles — from individual contributor to tech lead — and I’m especially effective in environments where ownership, clarity, and reliability matter. If you’re looking for someone who can take responsibility for your application and deliver solid, maintainable solutions, I’d be happy to help.