Zyphra
Lead Frontend Engineer
San Francisco · On-site · Full-time · Posted Mar 17, 2026
- Visa sponsorship
- Relocation and immigration support on a case-by-case basis.
About the job
Lead development of user-facing browser and desktop interfaces for an agentic AI system, creating accessible experiences and frontend infrastructure.
What you'll do
- Design and develop browser-based and desktop interfaces, component libraries, and styling systems.
- Refine user flows using real-world usage and feedback; prototype and implement UI features with ML, backend, and systems teams.
- Make the AI product simple, accessible, and useful to a wide range of users.
What they ask for
- Fluency in HTML, CSS, and JavaScript/TypeScript.
- Experience with modern frontend frameworks such as React.
- Experience designing and developing responsive, accessible, high-performance interfaces.
- Ability to prototype and iterate quickly in code and with design tools like Figma.
Nice to have
- Experience building browser extensions or desktop applications, such as Electron or Tauri.
- Experience with mobile platforms, complex workflows, automation, agentic behavior, backend development, APIs, or AI systems.
Tools
HTML, CSS, JavaScript/TypeScript, React, Figma, Electron, Tauri
AI focus
Develop interfaces for an agentic AI system and collaborate with ML researchers and teams to implement AI product features.
Model-written summary · the original posting is authoritative