Software Engineer, Frontend

About Us

Sierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands — including The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank — to transform how they serve customers and grow their businesses. We are primarily an in-person company based in San Francisco, with growing offices across North America, Europe, and Asia.

What You'll Do

• Own frontend across product and marketing surfaces: Work across both our core product interface and customer-facing web pages, ensuring a cohesive, polished user experience across all touchpoints.
• Lead design system and UI components: Design, build, and maintain a scalable design system and reusable component library that empowers engineers and designers to build consistent, high-quality UIs.
• Craft pixel-perfect user experiences: Work closely with the design team to translate Figma designs into reality with pixel-perfect precision, delightful interactions, typography, spacing, and motion.
• Champion frontend excellence: Set and uphold high standards for performance, accessibility, code quality, speed optimization, and cross-browser/device compatibility.
• Move fast with pragmatism and quality: Iterate quickly to ship improvements and new features while balancing rapid delivery with maintainability and polish.
• Full-stack involvement: Integrate frontend features with our GraphQL API and occasionally update server-side Go code to unblock frontend work.

What You'll Bring

• Frontend expertise and modern skills: 5+ years of experience building world-class web interfaces using React, TypeScript, HTML, and CSS. Proven track record shipping polished production UIs. Familiarity with Tailwind or modern CSS frameworks is a plus.
• Design sense and attention to detail: Keen eye for good design, software craftsmanship, and pixel-perfect UIs.
• Strong collaboration and communication: Ability to partner closely with designers and product managers and articulate tradeoffs clearly.
• Self-motivation and drive: Goal-oriented, proactive, able to navigate ambiguity, and execute quickly with high quality.
• Pragmatic problem-solving: Pragmatic approach to engineering trade-offs and selecting the right tools.
• Front-to-back understanding: Solid understanding of backend fundamentals, web APIs, and databases. Experience reading/writing server-side code.

Even Better

• Experience building or contributing to design systems or component libraries.
• UI/UX specialization (user research, visual design, or interaction design).
• Exposure to AI/ML products, chat interfaces, analytics dashboards, or enterprise SaaS.
• Familiarity with GraphQL (gqlgen, Relay), Go, and cloud platforms.
• Previous experience as an early engineer in a startup or fast-paced team.