Full Stack AI Engineer

The role

You will build working prototypes of agentic AI applications, LLM workflows, and full-stack products. You will experiment with frameworks, open source tools, and low-code stacks to support portfolio companies.

What you will do

• Build working prototypes of agentic AI applications, LLM workflows, and full-stack products
• Experiment quickly across frameworks, open source tools, and low-code stacks
• Interface directly with product thinkers and founders to distill ambiguous ideas into testable code
• Contribute to shared internal libraries and the Infinity Commons
• Add features to Gravity, our software factory platform
• Occasionally embed with portfolio companies to support launches or unblock execution

Required qualifications

• Fluency in Python and experience using AI toolkits and APIs
• Experience rapidly building and iterating on proof-of-concept or MVPs
• Comfort using a blend of commercial APIs, open source, and low-code tooling to get things done
• Strong problem-solving skills and analytical intuition

Nice to have

• Prior work with AI agents, and a deep familiarity with what it takes to make them work well in production environments
• Experience with frontend development (React, Next.js, etc.)
• A background in a STEM discipline, data science, or quant-heavy engineering
• Previous experience in a venture-backed startup or technical founder role

Before you apply

• Please apply using the provided form, candidates who directly email will not be considered
• Provide a short note in the application form on why this role fits you
• Provide links to past work, projects, or GitHub
• Provide availability to start the contract phase

About the company

Infinity is a holding company building full-stack AI businesses. They support portfolio companies by prototyping product ideas, providing flex capacity, and maintaining their in house software factory and agent hub.