Design, build, operate, and maintain scalable Ruby on Rails and React systems for Kajabi’s SaaS platform. The role owns features end to end, including reliability, observability, architecture, testing, and maintainability. It also requires product thinking, customer-focused decision-making, AI-assisted development, cross-functional collaboration, system design leadership, code reviews, and mentoring engineers. This is a full-time, in-person position in Irvine, California, five days per week.