Staff Platform Engineer-Front End (San Francisco)

Staff Web Frontend Engineer (Frontend Platform)Location: San Francisco, CA (Hybrid)About the CompanyWe’re building a modern, consumer-grade digital platform used by millions of people to access critical services in their everyday lives. Our product sits at the intersection of technology, accessibility, and trust—where performance, reliability, and user experience are non-negotiable.Engineering plays a central role in how we deliver value. We invest heavily in developer productivity, platform quality, and scalable architecture so teams can move fast without sacrificing craftsmanship. The frontend platform is a key part of that strategy—powering consistent, performant experiences across the entire product.We’re hiring a Staff Frontend Engineer to help shape the foundation of our web platform—powering high-quality, user-facing product experiences at scale.This isn’t a pure platform role. We’re looking for a product-minded frontend engineer who has shipped real features to users and also thinks horizontally—someone who builds systems other engineers rely on.What You’ll DoYou’ll work on the foundation that makes product teams faster, while staying connected to real user-facing experiences.Core areas of ownership:Web ArchitectureDefine and evolve our frontend architecture (Next.js, SSR strategy, routing)Lead large-scale migrations (e.g., monolith to modern frameworks)Drive decisions around code structure, modularity, and scalabilityPerformanceOwn Core Web Vitals (LCP, CLS, INP) and overall page performanceBuild and enforce performance guardrails (Lighthouse CI, budgets, monitoring)Develop real-user monitoring dashboards and insightsDeveloper ExperienceImprove build systems, tooling, and local development workflowsDesign AI-forward developer workflows and productivity improvementsOptimize build times, previews, and deployment pipelinesDesign System InfrastructureBuild the foundations of the design system (tokens, theming, versioning)Define governance and scalability patterns (not component implementation)Platform CapabilitiesBuild frameworks for experimentation (feature flags, client-side assignment)Support internationalization (i18n) and accessibility at scaleEnable automated a11y validation in CIWhat We’re Looking ForStrong experience building modern frontend applications using: React, TypeScript, Next.jsA track record of shipping real, user-facing product featuresExperience owning shared systems or platform capabilities such as: Design system infrastructure (tokens, theming)Build tooling or developer workflowsPerformance systems or observabilityExperimentation or localization frameworksAbility to think beyond individual features and design systems other teams useStrong product instincts—you care about user experience, not just abstractionWhat Makes You Stand OutYou’ve worked on both product features and foundational platform systemsYou’ve led migrations, scaled frontend architecture, or improved performance at scaleYou bring a balanced mindset: shipping fast while building for the long termYou’re not just an infrastructure specialist—you understand end-user impactWhy This RoleHigh impact across the entire frontend ecosystemInfluence architecture, performance, and developer experience at scaleWork on meaningful product experiences—not just internal systemsCollaborate closely with product and engineering leadersPlease reach out- View email address on apply.placed-app.com