Senior Fullstack Engineer (Next.js/AI Agents)

We're looking for a product-minded fullstack engineer to join a fast-moving team building AI-powered products at the intersection of great UX and applied AI. This role is heavy on product thinking, UI craft, and building with multi-agent systems and LLMs — not on infrastructure or distributed systems work. You'll be working across a modern Next.js/React stack while designing agentic workflows and MCP server integrations, so strong instincts for both clean interfaces and reliable AI system design are essential. This is a great fit for someone who loves building polished, delightful products and is excited to work at the leading edge of applied AI (multi-agent systems, RAG, voice agents).Key ResponsibilitiesDesign, build, and ship fullstack features across the product, from UI to backend logicBuild and maintain agentic workflows, including multi-agent systems and MCP server integrationsCollaborate closely with design to implement polished, animated, high-quality UI using Material UI and Figma specsBuild and maintain RAG pipelines and integrations with multiple LLM providers (Gemini, GPT, Claude, Perplexity)Work with async job processing (Inngest) and Postgres-backed data modelsContribute to internal tooling and back-office workflows (Retool)Partner with product and design to translate requirements into technical solutionsWrite clean, maintainable code and participate in code reviewCore RequirementsStrong experience with Next.js (Pages Router) and React 18Experience building and reasoning about multi-agent AI systems and agentic workflowsSolid backend experience with Postgres and building APIs (e.g., Next.js API routes)Strong product sense and a genuine interest in UI quality, animation, and design systemsExperience integrating with LLM APIs (e.g., OpenAI, Anthropic, Gemini) and/or RAG pipelinesExcellent written and verbal communication skills in EnglishAbility to work independently in a remote, fast-paced environmentNice-to-HaveExperience designing or building MCP (Model Context Protocol) serversExperience building voice agentsFamiliarity with Material UI and translating Figma designs into production UIExperience with async job frameworks like InngestFamiliarity with Qdrant or other vector databases for RAGExperience using AI coding tools like Codex or Claude CodeExperience with Retool or similar internal tooling platformsAdditionalUS Timezone Overlap: Required overlap with 9am–3pm PT (GMT-7)This role is not infrastructure-heavy — you won't be working on massive distributed systems or large-scale data problems. The ideal candidate is more energized by product craft, UI polish, and applied AI than by backend scale challengesWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.