ABOUT VERCEL: Vercel is the agentic infrastructure company, freeing people and agents to ship what's next. For more than a decade we've helped builders move from idea to production with speed, security, and exceptional developer experience. Now we're scaling our products for both agents and people to ship and run software, built in the open and trusted by OpenAI, PayPal, Ramp, Supreme, and millions of developers worldwide. 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'LL 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. WHAT YOU NEED * 5+ years of professional frontend engineering experience (React, JavaScript, Tailwind CSS, or similar). * Strong proficiency in Next.js and familiarity with modern frontend frameworks. * Fullstack experience (comfortable designing or consuming APIs and working with various services). * Deep understanding of SEO principles and best practices—especially around performance, accessibility, and search optimization. * Proven knowledge of A/B testing concepts and conversion rate optimization. * Stellar cross-functional communication skills—you can work effectively with marketing, design, and product to reach shared goals. * Eye for good user experiences and a knack for “getting the visuals right.” * Desire to work in a fast-paced environment, continuously grow, and master your craft. BONUS IF YOU * Have familiarity with the Vercel platform. * Comfortable using Tailwind CSS. * Background in web design or interest in design systems. * Interest in developer tooling domain. COMPENSATION & BENEFITS: * Competitive compensation package, including equity. * Inclusive Healthcare Package. * Learn and Grow - we provide mentorship and send you to events that help you build your network and skills. * Flexible Time Off. * We will provide you the gear you need to do your role, and a WFH budget for you to outfit your space as needed. The San Francisco, CA base pay range for this role is $196,000 - $294,000. Actual salary will be based on job-related skills, experience, and location. Compensation outside of San Francisco may be adjusted based on employee location. The total compensation package may include benefits, equity-based compensation, and eligibility for a company bonus or variable pay program depending on the role. Your recruiter can share more details during the hiring process.   DISCLOSURES: * Privacy: Please review our Job Applicant Privacy Policy for more information on how we handle your data. * Equal Opportunity: Vercel is committed to fostering and empowering an inclusive community within our organization. We do not discriminate on the basis of race, religion, color, gender expression or identity, sexual orientation, national origin, citizenship, age, marital status, veteran status, disability status, or any other characteristic protected by law. Vercel encourages everyone to apply for our available positions, even if they don't necessarily check every box on the job description.