Many years of Ruby on Rails experience Proven track record of building and shipping production Rails apps Stripe experience (billing, subscriptions, webhooks) Product thinker Good design sense (functional and polished UI with TailwindCSS) Security-minded (understanding authentication, authorization, common vulnerabilities) Up to date with Rails, Ruby, and AI developments Compounding mindset Comfortable with performance debugging Great writer (for PRs, docs, code comments) Self-directed Fluent in English, written and spoken BSc or higher in CS or equivalent technical field Terraform experience (nice to have) AWS infrastructure familiarity (nice to have) Experience at scale (billions of requests) (nice to have) Open-source contributions in the Rails ecosystem (nice to have)