Staff Platform Engineer-Front End

Role Overview

Staff Web Frontend Engineer (Frontend Platform) (Hybrid) in San Francisco, CA. You will shape the foundation of the web platform—building shared systems that product teams rely on—while staying connected to real user-facing impact.

Core Areas of Ownership

• Web Architecture

  • Define and evolve the frontend architecture (e.g., Next.js, SSR strategy, routing).
  • Lead large-scale migrations (e.g., monolith → modern frameworks).
  • Drive decisions on code structure, modularity, and scalability.

• Performance

  • Own Core Web Vitals: LCP, CLS, INP.
  • Establish performance guardrails using Lighthouse CI, budgets, and monitoring.
  • Build real-user monitoring dashboards and insights.

• Developer Experience (DX)

  • Improve build systems, tooling, and local development workflows.
  • Design AI-forward developer productivity improvements.
  • Optimize build times, previews, and deployment pipelines.

• Design System Infrastructure

  • Build foundations such as tokens, theming, and versioning.
  • Define governance and scalability patterns (not just component implementation).

• Platform Capabilities

  • Build experimentation frameworks (e.g., feature flags and client-side assignment).
  • Support internationalization (i18n) and accessibility at scale.
  • Enable automated a11y validation in CI.

What You’re Looking For

• Strong experience with modern frontend application development using:
  • React, TypeScript, Next.js
• Proven track record shipping real, user-facing features.
• Experience owning shared systems/platform capabilities such as:
  • Design system infrastructure (tokens/theming)
  • Tooling or developer workflows
  • Performance systems or observability
  • Experimentation or localization frameworks
• Product-minded instincts: you care about user experience, not just abstraction.

What Makes You Stand Out

• You’ve worked across both product features and foundational platform systems.
• You’ve led migrations, scaled architecture, or improved performance at scale.
• Balanced mindset: ship quickly while building for the long term.
• You understand end-user impact, not only infrastructure concerns.

Collaboration & Impact

• Influence frontend architecture, performance, and developer experience at scale.
• Work on meaningful product experiences (not only internal tooling).
• Collaborate closely with product and engineering leaders.