Web Developer

About The Company Sierra is a pioneering platform dedicated to transforming customer engagement through advanced AI solutions. Serving some of the world's most prominent brands such as The GAP, Rocket Mortgage, SoFi, Sutter Health, and SoftBank, Sierra specializes in deploying customer-facing AI agents that enhance service quality and drive business growth. Headquartered in San Francisco, Sierra maintains a strong physical presence with expanding offices across North America, Europe, and Asia, reflecting its global reach and commitment to innovation. Our core values—Trust, Customer Obsession, Craftsmanship, Intensity, and Family—are integral to our culture and operational philosophy. These principles guide our actions, foster a collaborative environment, and underpin our dedication to delivering exceptional products and services. Our leadership team includes industry veterans such as Bret Taylor, Board Chair of OpenAI, and Clay Bavor, former head of Google Labs, whose extensive experience drives Sierra’s strategic vision and technological excellence. About The Role We are seeking a talented Frontend Developer to join Sierra’s dynamic team. In this role, you will be instrumental in shaping the user experience across our core product interfaces and marketing platforms. Your work will ensure that users enjoy a seamless, engaging, and accessible experience whether they are interacting with our AI agents or exploring our website. You will collaborate closely with cross-functional teams including marketing, content, and design to deliver high-quality, performant, and user-centric web applications. This position offers an exciting opportunity to influence Sierra’s digital presence, improve content infrastructure, and champion best practices in performance and accessibility. You will have the chance to work on innovative projects that directly impact customer satisfaction and business growth, while also contributing to Sierra’s mission to make AI accessible, safe, and useful worldwide. Qualifications The ideal candidate will possess a strong foundation in modern web development, with a focus on frontend technologies and user experience design. Experience working with marketing or growth-oriented websites, coupled with a solid understanding of business metrics such as conversion funnels, SEO, and A/B testing, is highly valued. Proficiency in JavaScript, TypeScript, and React (or similar frameworks) is essential, along with a keen eye for UI/UX details. You should demonstrate a genuine commitment to performance optimization and accessibility standards, including semantic markup, keyboard navigation, and WCAG compliance. Experience working with headless CMS platforms like Sanity, structured content models, and internationalization (i18n) workflows will give you an edge. Strong collaboration skills are necessary to effectively translate business goals into technical solutions and communicate complex concepts to non-engineers. Additional preferred qualifications include experience with localization, analytics, experimentation platforms, and third-party integrations such as video hosting or error monitoring tools. A proactive attitude towards continuous learning and improvement is essential. Responsibilities Own and enhance the frontend experience across Sierra’s product and marketing surfaces, ensuring consistency, polish, and high usability.Develop and maintain content infrastructure using Sanity CMS, enabling content and marketing teams to manage and preview content independently, streamlining workflows and reducing dependency on engineering resources.Partner with marketing, sales, and operations teams to implement analytics, enable experimentation, and translate business objectives into technical features that provide measurable insights into performance.Support localization and internationalization efforts by developing multilingual content workflows, translation management, and infrastructure to ensure a first-class experience for global users.Prioritize performance as a core feature by managing Core Web Vitals, optimizing media assets, diagnosing layout shifts, and ensuring fast load times and smooth interactions.Champion accessibility best practices by implementing semantic markup, ensuring keyboard navigability, supporting screen readers, and designing WCAG-compliant components to make our platform usable for everyone. Benefits Sierra offers a comprehensive benefits package that reflects our commitment to our employees’ well-being and growth. Full-time employees enjoy flexible (unlimited) paid time off, fostering a healthy work-life balance. We provide extensive medical, dental, and vision coverage for employees and their families, along with life insurance and disability benefits to support your financial security. Our retirement plans are designed to help you plan for the future, with options varying by country. We also offer parental leave and fertility and family-building benefits through Carrot, supporting employees during significant life events. To keep you energized, Sierra provides free lunch, snacks, and coffee, along with a discretionary stipend to spend on wellness or personal development. Additionally, unique perks such as free alphorn lessons exemplify our culture of innovation and fun. All benefits are subject to regional policies and may evolve over time. Eligible employees can participate in Sierra’s equity plans, aligning their success with the company’s growth and future. Equal Opportunity Sierra is committed to fostering an inclusive and diverse workplace. We believe that varied perspectives and backgrounds drive innovation and excellence. We encourage applicants from all backgrounds to apply, regardless of race, gender, age, religion, national origin, sexual orientation, gender identity, disability, veteran status, or any other protected class. Our hiring process is designed to be fair and equitable, and we strive to create an environment where everyone feels valued, respected, and empowered to contribute their best.