Product Engineer: AI World Builder

HellaGoodAudio; San Francisco (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

Moonlake is seeking a Product Engineer to join our on-site San Francisco team. You will own full-stack development from concept to shipped features using React, Next.js, TypeScript, and Python as needed, balancing product judgment with engineering excellence.

Join a mission to build world-building, embodied AI tools and AI infrastructure for researchers, developers, and creators. You will collaborate across research, engineering, and founders to ship fast, iterate on usage, and influence product

Qualifications

• Proven track record shipping production web products in ambiguous, fast-moving environments.
• Strong full-stack experience with React, Next.js and TypeScript.
• Ability to design robust database schemas and system architecture.
• Clear technical communication and decision-making without heavy PM supervision.
• Experience building AI-enabled or agentic product features is a plus.

Responsibilities

• Scope fuzzy product goals into testable, instrumented features.
• Break down work and drive it to production.
• Collaborate with research, engineering and founders on world models and AI systems.
• Use AI-native engineering tools to accelerate shipping.

Skills

React

Next.js

TypeScript

Frontend architecture

Backend systems

Tools

Node.js

PostgreSQL

REST APIs

SQL

Job description

Moonlake is seeking a Product Engineer to join our on-site San Francisco team. You will own full-stack development from concept to shipped features using React, Next.js, TypeScript, and Python as needed, balancing product judgment with engineering excellence.

Join a mission to build world-building, embodied AI tools and AI infrastructure for researchers, developers, and creators. You will collaborate across research, engineering, and founders to ship fast, iterate on usage, and influence product