Senior Ruby/Rails Backend Developer

This senior backend developer, with ~20 years of experience, excels at cleaning up complex systems, particularly legacy systems, financial data, performance bottlenecks, and neglected infrastructure. They are strongest in Ruby/Rails, database performance (Postgres/MySQL), and financial/billing systems. They are also experienced with AI-directed development, building LLM-powered features, and infrastructure (AWS, Heroku, Cloudflare Workers, Sidekiq/GoodJob). They have dabbled in Golang, TypeScript/Preact, and C. They are seeking full-time senior backend work at a company focused on durable, useful products where system judgment is valued.