Frontend Infrastructure Engineer Series voice AI startup

Job Title

Staff Frontend Infrastructure Engineer

Not Disclosed

$61M Series A voice AI startup building real-time agents for enterprise automation

Lead the evolution of frontend systems at a high-growth AI startup. You will build the foundational abstractions, design systems, and developer tooling that empower engineering teams to deliver world-class AI agent experiences. This role focuses on internal developer experience, code quality, and scalable architecture rather than end-user product features.

San Francisco, USA

• Join a $61M Series A startup backed by top-tier investors and already serving massive enterprise customers like Door Dash.
• Work at the cutting edge of voice AI technology, building the infrastructure that supports real-time, emotionally intelligent AI agents.
• Gain high-impact autonomy as a staff-level individual contributor, directly shaping the technical standards and developer culture of an emerging leader.

• Architect and maintain a sophisticated design system and component library with clean APIs and comprehensive documentation for internal use.
• Develop custom CLIs, build tools, and CI/CD pipelines to drastically accelerate frontend development cycles and catch errors early.
• Define and enforce standards for state management, data fetching, and type safety across the entire Type Script and React codebase.

• Offers 5+ years of professional frontend experience with a proven track record in platform, infrastructure, or design systems teams.
• Possesses expert-level proficiency in Type Script and React, with a deep understanding of component composition and library architecture.
• Balances technical perfectionism with pragmatic delivery, focusing on creating intuitive abstractions that make other engineers more productive every day.