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 We are looking for a Software Engineer to join the Agent Stack team and help build eve — Vercel's framework for building production-ready AI agents. eve is to agents what Next.js is to web apps: an opinionated, batteries-included framework that lets developers write only what's unique about their agent and have the platform handle the rest. You will design and implement core framework primitives, contribute to eve's runtime (built on Vercel Workflows, AI SDK, and Sandbox), and help shape the developer experience for the next generation of AI-native applications. You will report to the Director of Vercel's Agent Stack and will be located onsite in New York City. 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, even if the role is listed as remote. For location-specific details, please connect with our recruiting team. WHAT YOU'LL DO * Design and ship core eve framework features — the file-system conventions, compiler, and runtime that turn an agent directory into a durable, production-ready agent on Vercel. * Build and maintain integrations across eve's channel layer (Slack, Web Chat, WhatsApp, API, Cron, and more) and connections layer (Vercel Connect / MCP endpoints). * Collaborate with the AI SDK, Workflows, and Sandbox teams to ensure eve's primitives compose seamlessly on the Vercel platform. * Drive DX quality — CLI ergonomics, error messages, docs, and examples — so TypeScript/Next.js developers can ship their first agent in minutes. * Contribute to eve's evaluation and observability story: test suites, scoring rubrics, and deployment-time evals that make agents production-safe. * Partner with early customers and internal teams to gather feedback, diagnose agent reliability issues, and iterate rapidly. WHAT YOU NEED * 5+ years of production TypeScript/JavaScript experience; comfortable owning complex, stateful systems end to end. * Strong understanding of distributed systems concepts — durable execution, checkpointing, async workflows, and failure recovery. * Experience building or operating developer tooling, frameworks, or SDKs used by external developers. * Familiarity with LLM APIs and agent orchestration patterns (tool calling, multi-agent delegation, human-in-the-loop flows). * Track record of shipping high-quality open-source or customer-facing APIs and caring deeply about API design. BENEFITS & COMPENSATION: * 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 New York, NY base pay range for this role is $208,000-$312,000. Actual salary will be based on job-related skills, experience, and location. Compensation outside of NYC 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.   #LI-KR1 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.