Staff Full Stack Engineer for Robots & Pencils. One opening. Remote US role; start date ASAP. Includes in-person interview and one-week onboarding, expenses covered. Compensation: $155,000-$230,000. Authorization: must be permanently authorized to work in the US; no sponsorship. Hiring manager: Sarah Hamilton. This is a senior-most, high-ownership full-stack engineering role for an architect-caliber builder who can define technical strategy and build across React/TypeScript, Python/Node.js, and production AI integrations. The role includes front-end architecture, polished demo-ready experiences, backend/API architecture, real-time channel integrations across chat, voice, and web, and AI service integration. Responsibilities include defining front-end architecture and standards, building scalable UI systems in React/Angular/Next.js/TypeScript, leading backend development and API architecture, designing channel integrations across Slack, Teams, SMS, Twilio, PSTN, and web, implementing re...