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Sierra

Web Developer, Marketing Site

San Francisco, CAfulltimemidAdded today

About this role

Sierra, a leading AI agent platform, is seeking a Web Developer to own the frontend across their product and marketing surfaces. You'll build CMS infrastructure, drive growth through experimentation, and ensure performance and accessibility are first-class across all customer-facing web experiences.

What you'll do

  • Own frontend development for both the core product interface and customer-facing marketing website
  • Design and implement CMS infrastructure using Sanity to enable self-serve content management for non-technical teams
  • Partner with marketing and sales to implement analytics, experimentation, and conversion-focused features
  • Build and optimize localization and internationalization systems for multilingual support
  • Monitor and improve Core Web Vitals, media optimization, and page performance metrics
  • Champion accessibility standards including semantic markup, keyboard navigation, and WCAG compliance

What they're looking for

  • JavaScript and TypeScript
  • React or similar modern frontend framework
  • Headless CMS platforms (Sanity preferred)
  • Web performance optimization and Core Web Vitals
  • Web accessibility (WCAG, semantic HTML)
  • Analytics and A/B testing platforms
  • Internationalization (i18n) and localization systems
  • Cross-functional collaboration and communication
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Sierra

Sierra builds production-grade AI agents for enterprise clients in insurance, financial services, and other industries, enabling companies to automate complex business processes and enhance customer experiences. The company is hiring Software Engineers to design and deploy mission-critical AI systems, develop platform infrastructure, and work directly with enterprise customers on agent development and optimization.

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Likely interview questions

  • Tell us about a time you optimized a marketing website for performance—what metrics did you target and what trade-offs did you navigate?
  • How have you structured content models in a headless CMS to empower non-technical teams to move independently?
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