• Architect and evolve internet-scale systems with performance, reliability, and scalability as first principles. • Lead the technical direction for Ruby on Rails and React applications across the platform. • Design clean, extensible APIs and modern front-end architectures that deliver fast, intuitive user experiences. • Orchestrate AI-assisted development workflows—using AI agents to accelerate code scaffolding, documentation, test generation, refactoring, and dependency analysis. • Own architectural decisions across services, databases, and infrastructure—including MariaDB, Redis, and Elasticsearch. • Use Kubernetes to scale Rails applications to handle Enterprise traffic. • Guide multiple high-impact initiatives in parallel, ensuring secure, well-tested, production-ready releases. • Mentor engineers to think in systems, write maintainable code, and leverage AI responsibly to increase velocity without sacrificing quality. • Proactively identify technical debt and scalability risks—and drive pragmatic solutions before they become bottlenecks. • Partner with Product, Design, and Leadership to evaluate trade-offs and deliver exceptional experiences across browsers and devices. • Continuously evaluate emerging technologies—including AI tooling—to strengthen platform performance and team effectiveness.