Software Engineer (Web Performance), v0

About Vercel: Vercel gives developers the tools and cloud infrastructure to build, scale, and secure a faster, more personalized web. As the team behind v0, Next.js, and AI SDK, Vercel helps customers like Ramp, Supreme, PayPal, and Under Armour build for the AI-native web. Our mission is to enable the world to ship the best products. That starts with creating a place where everyone can do their best work. Whether you're building on our platform, supporting our customers, or shaping our story: You can just ship things. About the Role: As a Web Performance Engineer on v0, you will focus on performance engineering, front-end architecture, and user experience. You’ll work with React, Next.js, and Vercel’s edge infrastructure to ensure that the websites and applications generated by v0 are performant, scalable, and delightful. You will be responsible for creating performance patterns and infrastructure that guarantee fast load times, smooth interactions, and exceptional UX across devices and regions . What You Will Do: Architect and implement high-performing frontend systems using React and Next.js. Ensure a world-class user experience through thoughtful UI/UX engineering, accessibility, and maintainability. Build frameworks and tooling to evaluate and improve performance (Lighthouse, Real User Monitoring, Core Web Vitals). Work closely with design, product engineering, and AI teams to ensure generated output meets high quality and performance standards. Optimize performance for speed, scalability, and reliability across the entire stack. About You: You have at least 5+ years of relevant experience Strong experience building and optimizing React/Next.js applications. Deep under