Senior Frontend Engineer

<div class="content-intro"><p>Yotpo is leading the next era of trust and loyalty in eCommerce. With AI-powered Reviews and Loyalty solutions, we help brands turn browsers into customers and customers into advocates. Through deep integrations across the eCommerce ecosystem and the trust of over 30,000 global brands, Yotpo delivers seamless omnichannel experiences that increase conversion, strengthen customer relationships, and drive profitable, long-term growth.</p></div><p><strong>Your Mission at Yotpo</strong> As a Senior Frontend Engineer, you are the architect of the first impression and a leader in technical execution. Your mission is to define and build highly responsive, intuitive web experiences that set the industry standard for usability and speed. You will leverage and guide the team in modern React architecture best practices, ensuring that every interaction feels instant, every pixel serves a purpose, and our customers enjoy a frictionless, performant product experience at massive scale. You aren't just implementing designs; you are engineering the high-performance engine that powers our customer experience, obsessed with delivering a high-quality, "snappy" UI at scale and mentoring others to do the same.</p> <p>&nbsp;</p> <p><strong>Key Responsibilities</strong></p> <ul> <li><strong>Modern Stack Architecture &amp; Leadership:</strong> Architect, build, and lead the implementation of production-grade applications using <strong>Tanstack</strong>/<strong>Next.js</strong> and advanced React patterns to deliver optimized, scalable, and maintainable user interfaces. Act as a subject matter expert for the frontend stack.</li> <li><strong>Performance Obsession &amp; Ownership:</strong> Own the "Speed Index" across multiple applications. You will proactively define, measure, and optimize Core Web Vitals (LCP, CLS, INP) and fine-tune bundle sizes to ensure our apps perform flawlessly on any network, setting performance standards for the team.</li> <li><strong>Component Craftsmanship &amp; Design System Leadership:</strong> Design and build composable, accessible, and themeable UI libraries using <strong>Radix UI</strong>, <strong>shadcn/ui</strong>, and <strong>Tailwind CSS</strong>. You will be a key contributor and owner of our internal design system, ensuring consistency, accessibility, and scalability across the organization.</li> <li><strong>State &amp; Data Mastery:</strong> Design and implement robust strategies for managing complex server and client state seamlessly, ensuring data is fresh, cached efficiently, synchronized perfectly, and the data flow is highly performant.</li> </ul> <p><strong>What You Bring</strong></p> <ul> <li><strong>Your Mindset:</strong></li> <ul> <li><strong>"Milliseconds Matter":</strong> You take it personally when a page load hangs. You view performance as the ultimate feature and can diagnose and solve deep performance bottlenecks.</li> <li><strong>DX, UX &amp; Architecture Advocate:</strong> You care deeply about the Developer Experience (clean APIs, type safety, documentation) as much as you do about the User Experience, driving architectural decisions that balance both.</li> <li><strong>Modern Crafter &amp; Mentor:</strong> You don't just "know" React; you are a master of the reconciliation loop, hooks, state management patterns, and know how to architect efficient, maintainable, and scalable code. You enjoy mentoring junior and mid-level engineers.</li> </ul> <li><strong>Your Experience &amp; Qualifications:</strong></li> <ul> <li><strong>Must Haves:</strong></li> <ul> <li><strong>6+ years</strong> of experience building and scaling high-traffic, production web applications.</li> <li><strong>Tanstack/Next.js Architecture:</strong> Deep, demonstrable expertise with the SSR ecosystem and modern application frameworks, including architectural decision-making.</li> <li><strong>React Expertise:</strong> Advanced, expert-level understanding of React hooks, context, reconciliation, and performance optimization techniques (useMemo, useCallback, virtualisation).</li> <li><strong>Modern Tooling Proficiency:</strong> Expert-level, hands-on experience with <strong>TypeScript</strong>, advanced <strong>Tailwind CSS</strong> patterns, and all core <strong>TanStack libraries</strong> (Query/Table).</li> <li><st