Site Engineer

About Vercel: Vercel is the agentic infrastructure company. We free people and agents to ship what’s next. For more than a decade, Vercel has shaped how the web is built. As the team behind Next.js, v0, and AI SDK, we create products that help builders move from idea to production with speed, security, and exceptional developer experience. Now, software is entering a new era, and the next generation of products will not just be used by people. They will be built, extended, and operated by agents. We are building the platform for that future, trusted by companies like OpenAI, PayPal, Ramp, Supreme, and millions of developers worldwide . Whether you’re building our products, supporting our customers, growing our community, or shaping our story, you’ll help define what comes next. About the Role: As a growth-focused Fullstack Engineer on our team, you will play a central role in driving user acquisition, conversion, and retention through highly performant and visually stunning web experiences. You will collaborate with cross-functional teams—from marketing to sales to product design—to build dynamic pages, run A/B tests, and optimize conversion funnels. In this role, you’ll design and develop scalable features that enhance the user journey, integrate feedback loops, monitor key metrics, and ensure the reliability of our acquisition funnel. By staying updated on industry trends and focusing on delightful UX, you’ll continuously refine our web properties—ultimately delivering an exceptional experience from first touch through ongoing engagement. If you’re based within a pre-determined commuting distance of one of our offices (SF, NY, London, or Berlin), the role includes in-office anchor days on Monday, Tuesday, and Friday. If you're located beyond that distance, the role is fully remote. For location-specific details, please connect with our recruiting team. What You Will Do: Lead complex frontend projects that establish Vercel as a gold standard for brand and product marketing. Collaborate with growth and marketing teams to A/B test landing pages for lead generation across multiple channels. Design and implement scalable applications, web services, and APIs with a focus on user experience and performance. Contribute to our design system and uphold industry-leading UX standards (e.g., interactions, micro-animations, layout consistency). Continuously improve engineering processes, tools, and systems to scale the codebase and team productivity. Troubleshoot and fix bugs, delivering quick, high-quality resolutions. Write technical documents and maintain internal tools to empower other teams. Review and provide feedback on contributions from other engineers. Identify bottlenecks and optimize for conversion, speed, and reliability across the funnel. Critically think about foundational areas of the Vercel application to ensure ease of maintenance and future extensibility. About You: 5+ years of professional frontend engineering experience (React, JavaScrip