Senior Full-Stack TypeScript Engineer

Senior Full Stack Engineer (Frontend-Focused) About the Role We are looking for a Senior Full Stack Engineer with a strong frontend orientation to help build next-generation collaborative AI-powered product experiences. This role is ideal for someone who thrives in fast-paced startup environments and enjoys building polished, user-centric applications that blend creativity, AI, and real-time collaboration. You will work closely with product, design, and engineering teams to create highly interactive web and mobile experiences where humans and AI agents collaborate seamlessly. Responsibilities - Build and maintain complex full stack applications using TypeScript across the entire stack - Develop highly polished, responsive, and visually refined user interfaces - Create real-time collaborative experiences and interactive canvas-based workflows - Work on AI-powered product features, including LLM integrations and agentic workflows - Collaborate closely with product and design teams to deliver intuitive user experiences - Implement animations, transitions, and modern frontend interactions - Contribute to backend architecture and scalable system design - Participate in technical discussions and product decision-making - Demonstrate ownership of features from concept through production deployment Required Qualifications - Strong experience with TypeScript across frontend and backend development - Proven experience with React and modern web technologies - Experience with React Native for mobile development - Solid full stack engineering background with strong frontend expertise - Strong understanding of UI/UX principles and product-minded engineering - Experience building polished consumer or SaaS web products - Ability to work in a fast-moving startup environment - Excellent communication and collaboration skills - Authorized to work in the United States Preferred Qualifications - Experience working with LLMs, AI workflows, or agentic systems - Experience building collaborative or real-time applications - Familiarity with animations, motion systems, and interactive interfaces - Experience working on creative tools, design tools, or highly visual products - Startup experience and comfort with ambiguity - Strong product intuition and design sensibility Work Environment - Hybrid role based in New York - Four days onsite, one day remote (Fridays) - Fast-paced startup environment with lean decision-making and rapid iteration Ideal Candidate The ideal candidate is a highly capable engineer who combines strong technical execution with product thinking and design sensitivity. They are passionate about building cutting-edge AI-enabled experiences and enjoy working closely with small, high-impact teams.