Founding Design Engineer
Founding engineer owning design and development of a real-time visual canvas for building AI agents, blending UI/UX with frontend engineering. Requires deep React/TypeScript expertise and experience with interactive developer tools.
About the job
What You'll Do
- Own the design and development of Sim’s visual canvas—the real-time, drag-and-drop editor central to our platform
- Architect and implement intuitive UI systems for complex agentic workflows
- Shape how developers interact: design, test, debug, and deploy agents seamlessly within the product
- Ensure the experience remains fast, beautiful, and robust as workflows grow in size and sophistication
- Bridge visuals and execution: what users see is what runs
- Set standards for front-end code, component architecture, design systems, and user ergonomics
- Collaborate across the stack in our Next.js monorepo; ship to production daily
- Define and refine UX/UI patterns, with attention to developer delight
What We’re Looking For
- Design-minded engineer with deep experience in React and TypeScript
- Strong UI/UX intuition—you care how things look and feel, not just how they work
- Experience building complex, interactive frontend systems (canvas editors, collaborative tools, visual builders, etc.)
- Proven ability to deliver polished, user-focused developer or creative tools
- Deep understanding of front-end performance, animation, and responsiveness
- High agency and ownership—help define the roadmap as well as build it
- Comfort working in Next.js; backend experience is a plus
- Experience with real-time systems (WebSockets, CRDTs, etc.) is a plus
- Visual design skills or open-source contributions are a plus
Skills
React, TypeScript, Next.js, Ui/Ux, WebSockets, Crdts, Canvas Editors, Design Systems, Frontend Performance, Animations
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