Sim
Design
DesignEngineer
Neural analysis suggests this role is
optimal for Mid+ candidates.
“Design Engineer at Sim. Skills: Visual design, Agent building platform, Real-time systems. Own design and development. Architect intuitive UI systems”
Industry & Context.
Root cause analysis
Visa sponsorship available
What They're Looking For.
Must Have
Deep experience in React, Deep experience in TypeScript
Nice to Have
Backend experience is a plus, Experience with real-time systems is a plus, Visual design skills are a plus, Open-source contributions are a plus
What You'll Do.
Own design and development
Architect intuitive UI systems
Implement intuitive UI systems
Shape developer interaction
Design agent deployment
Ensure experience remains fast
Ensure experience remains beautiful
Ensure experience remains robust
Bridge visuals and execution
Set standards for front-end code
Set standards for component architecture
Set standards for design systems
Set standards for user ergonomics
Collaborate across the stack
Define UX/UI patterns
Refine UX/UI patterns
How You'll Work.
Team & Collaboration
Partner with engineering; Partner with design; Partner with product; Collaborate across the stack
Full Job Description
ABOUT THE ROLE You'll own the design and development of Sim’s visual, agent-building platform—the canvas where developers build, connect, and launch AI agents. From architecture to polished interactions, you'll define how thousands of developers visually create with Sim. Your work blends UI/UX design with engineering, shaping the interface, experience, and real-time systems at the heart of our product. Sim has been called "Figma for AI agents," and you’ll push this further—making our canvas more powerful, delightful, and performant as workflows grow. You’ll partner with engineering, design, and product to deliver a seamless agent-building journey from initial creation through to production. This is a foundational role. You’ll set standards across visual design, interaction patterns, and UI responsiveness. On our lean team, you’ll influence everything the user interacts with and rapidly ship features that impact thousands. 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-
Applying for this Design Engineer role?
Most applicants get filtered before a human reads their resume. See if yours makes the cut.
How to Apply on Ashby
- Ashby is a fast modern ATS — most applications take under 3 minutes.
- The resume parser is strong; verify parsed experience dates and job titles.
- Custom screening questions are often scored algorithmically — answer completely.
- Location field affects geo-based screening; use your actual metro area.
ANONYMOUS · UNFILTERED
What do employees actually say about Sim?
Real rants from real employees. Read before you apply.