Senior Full-Stack Engineer Build & Scale AI Marketing Platform

We are looking for a Full-Stack Engineer with 4-6 years of experience to take on a critical, high-ownership role at our seed-stage AI startup. You'll be a senior member of our engineering team, helping to define our product direction and mentor talented junior engineers. We need a product-minded builder who can own features end-to-end and help us scale our AI-powered marketing platform for a growing waitlist of clients. What will you be doing? Design and implement RESTful APIs (FastAPI) with well-structured Pydantic schemas, ensuring backward compatibility as the product evolves. Build and maintain React/TypeScript frontends with modern state management (Zustand, TanStack Query) and Tailwind CSS. Work with Django ORM and PostgreSQL for complex data modeling — multi-tenant architecture, canvas/widget systems, versioned content, and template provisioning. Write and maintain frontend and backend unit tests. Collaborate on infrastructure using Docker, GCP (Cloud Run, GKE), Terraform, and GitHub Actions CI/CD pipelines. Perform data operations — writing and reviewing SQL for migrations, debugging data inconsistencies across environments (staging/production). Collaborate closely with a small, stellar team to solve complex challenges in the $1T performance marketing industry. Role Details Position: Full Stack Software Engineer Focus on both production and infrastructure with a 50/50 backend and frontend split Team size: 15 person engineering team, reporting to the Head of AI Candidate Requirements 4-6 years of experience, ideally senior level Must have skills: React, TypeScript for frontend; flexible backend skills Prefer experience from reputable tech companies and VC-backed startups Company Context 25-person startup with a dynamic project environment Focus on diverse projects like data engineering, payments, and infrastructure Ideal Candidate Profile Possesses strong product opinions and ability to mentor junior staff Comfortable with a balanced frontend/backend role #J-18808-Ljbffr