Full-Stack Engineer

Experience level: mid senior level.

About the Role

We're looking for a Full-Stack Engineer to build our web application end-to-end and bring the MVP to life. You'll own the user-facing product and the backend that supports it, working closely with the AI Engineer to weave intelligent, real-time AI interactions into a smooth, reliable experience.

What You'll Do

• Build and ship the web application across frontend and backend, from UI components to APIs and data models

• Design and implement a responsive, real-time conversational interface (React, WebSockets/SSE)

• Develop backend services: authentication, session management, data persistence, and third-party integrations

• Integrate AI and multi-agent services into the product in partnership with the AI Engineer

• Design and maintain databases and API contracts that scale with product complexity

• Own performance, reliability, and security across the stack

• Translate product and design requirements into well-tested, maintainable features

• Move fast in an early-stage environment, balancing speed with quality

• 4+ years of full-stack software engineering experience

• Strong proficiency in TypeScript/JavaScript and a modern frontend framework (React preferred)

• Solid backend experience (Node.js, Python, or similar) building and consuming APIs

• Experience designing relational and/or NoSQL data models (PostgreSQL, MongoDB, etc.)

• Familiarity with real-time communication patterns (WebSockets, SSE) and streaming UIs

• Understanding of authentication, authorization, and secure data handling

• Experience integrating third-party APIs, ideally including LLM or AI services

• Comfort owning features end-to-end with minimal oversight

• Experience building with LLM APIs or AI-powered product features

• Familiarity with cloud platforms (AWS/GCP/Azure) and CI/CD pipelines

• Knowledge of caching, queuing, and background job processing

• Prior early-stage startup or 0-to-1 product experience