Senior Ruby on Rails Developer

PeerSource is currently recruiting for a Senior Ruby on Rails Developer on a Contract basis for our client in Atlanta, GA. Although someone local to the area would be preferred, we also would consider someone primarily remote from anywhere in the CT/ET time zone. Summary We are seeking an experienced Ruby on Rails Developer to build and enhance production web applications in a highly collaborative environment. This role will focus on scalable backend development, API integrations, background processing, and modern frontend technologies while leveraging AI‑assisted development tools to improve delivery and quality. Candidates should be comfortable communicating technical tradeoffs, surfacing risks early, and contributing to a test‑driven engineering culture. Responsibilities Design, build, and maintain scalable production web applications using Ruby on Rails. Develop and optimize database models, queries, and integrations leveraging ActiveRecord and PostgreSQL. Build and support frontend functionality using React and TypeScript with a focus on maintainable component architecture and strong typing practices. Implement and maintain background processing workflows (e.g., Sidekiq or similar), ensuring idempotency, resiliency, and retry safety. Develop and maintain integrations with third‑party systems through APIs, GraphQL and/or JSON services, and secure webhook implementations. Contribute to a test‑first engineering culture with an emphasis on integration testing and application reliability. Collaborate with cross‑functional teams to evaluate technical tradeoffs, proactively identify risks, and deliver scalable solutions. Support performance, observability, and debugging efforts across backend and frontend systems. Required Skills 8+ years of experience building production web applications with extensive expertise in Ruby on Rails. Experience with AI‑assisted development tools, preferably Claude Console. Strong experience with ActiveRecord, with experience across PostgreSQL, React, and TypeScript highly preferred. Experience with background processing frameworks (e.g., Sidekiq or similar), API integrations, GraphQL and/or JSON services, and secure webhooks. Familiarity with multi‑tenant applications supporting multiple user personas and modern frontend tooling such as esbuild and Tailwind. Understanding of observability, performance optimization, and security fundamentals including SQL injection prevention, XSS, authentication, and authorization frameworks (e.g., Devise, Pundit, JWT). Strong communication skills with the ability to clearly articulate technical tradeoffs and surface risks proactively. Additional Information H1 sponsorship is not available. #J-18808-Ljbffr