AgentSync is seeking a Senior Full Stack Engineer focused on frontend, building the new AgentSync App in a TypeScript/React monorepo. You’ll own the user experience end-to-end, while also integrating with Go services for backend needs. You’ll influence frontend architecture, design system evolution, and drive high-quality, accessible UI work. You will work in a rapid-paced, AI-assisted development process, using Claude to translate product requirements into well-scoped stories, tests, and code.