Senior Fullstack Developer

About this Role We're looking for a Founding Full Stack Engineer to help build and scale Valerie's multi-tenant platform for e-commerce brands. You'll work across the entire product stack — from React interfaces and TypeScript contracts to NestJS APIs, PostgreSQL, AWS, testing, and deployment. This is a hands-on engineering role where you'll own features from architecture and implementation through to production. You'll work closely with the Product and Engineering teams to turn evolving ideas into reliable, production-ready systems. You'll have significant ownership in how we build, test, deploy, and scale the platform, while also contributing to the development of Valerie's AI Agents and Brands & Investment Growth Platform. You could be a great fit if... You enjoy working across the full stack rather than being limited to frontend or backend. You like taking a feature from an idea or requirement all the way through to production. You are comfortable making architecture and technical decisions independently in a fast-moving environment. You care about building production-ready systems, not just getting code to work. You have strong TypeScript fundamentals and enjoy working with both React and Node.js. You naturally think about scalability, security, performance, and maintainability when building features. You enjoy solving complex problems across the browser, API, database, and infrastructure layers. You take ownership when something breaks and are comfortable digging into logs, metrics, and production evidence to find the root cause. You enjoy improving engineering workflows, code quality, testing, CI/CD, and development practices. You're excited by the opportunity to help build a product and technical foundation from an early stage. Requirements 6+ years of professional software engineering experience, with substantial ownership of production systems. 3+ years of advanced TypeScript development across both frontend and backend. Strong understanding of TypeScript,