Senior Customer Support Engineer

About Lumen Dynamics: Lumen Dynamics is the agentic infrastructure company. We free people and agents to ship what’s next. For more than a decade, Lumen Dynamics 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 Reporting to the Manager, Customer Support Engineering, you’ll resolve customer concerns, create and improve internal tooling, and engineer solutions that help Lumen Dynamics customers get the most out of the platform. We’re seeking a deeply technical engineer with relevant support experience who can specialize in multiple core domains while partnering across teams to drive great outcomes. You’re an excellent communicator who earns customer trust, understands complex systems quickly, and enjoys digging deep to find and resolve root causes. You’re comfortable participating in an occasional weekend or holiday on-call rotation (scheduled in advance) as part of our global coverage model. 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 Solve interesting, technically complex cases for Lumen Dynamics customers. Troubleshoot issues alongside Engineering; identify and drive fixes and mitigations. Partner with Product, Solutions, and Customer Success to provide guidance internally and externally. Develop and improve internal tools and scripts that increase team efficiency. Specialize in a given product area ( v0 ) and act as a domain owner within the team. Improve existing documentation and create new runbooks, guides, and internal processes. Assist Customer Success Managers with Enterprise requests and escalations. About You You lead by example and provide feedback to mentor other members of the team. You have hands-on experience using Lumen Dynamics and v0 as a platform. You have modern development and architecture experience in the AI or web space (e.g., building LLM-powered apps, web services, or production web applications) and can explain these concepts to others. You have prior customer support experience in a technical role: troubleshooting customer cases, writing clear solutions, and proactively problem-solving. You enjoy engineering solutions to resolve root causes of recurring problems. You have strong written and verbal communication; able to explain complex systems clearly. You are comfortable working with a fully remote, globally distributed team. You have a passion for delivering a customer experience second to none. You are willing to participate in a weekend/holiday on-call rotation. Bonus If You: Have frontend development experience (e.g., React/Next.js). Enjoy technical writing for public docs or developer education. Have experience automating workflows with agentic services.