C

Founding Full-Stack Engineer (AI Platform)

cgs • United States
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AI Summary

Build and scale AI-driven agent infrastructure and workflows for a seed-stage AI company. Own full-stack development, from core systems to user-facing applications, shaping the company’s technical direction. Requires full-time in-office presence in San Francisco with 1+ years of experience (early-career exceptions for exceptional candidates).

Key Highlights
Founding role with two-person founding team
1+ years of experience required (early-career exceptions for exceptional candidates)
Full-time, in-office (5 days/week) in San Francisco

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Key Responsibilities
Build and improve core agent infrastructure and orchestration systems
Develop memory, recommendation systems, and long-running agent execution capabilities
Build internal applications and user-facing product features
Work across backend, frontend, infrastructure, and platform engineering
Improve reliability and performance of AI agents for real business workflows
Develop and maintain evaluations measuring agent performance
Build scalable systems for complex, multi-step business tasks
Collaborate closely with founders and customers to deliver solutions
Technical Skills Required
Full-Stack Engineering AI Agent/Workflow Systems System Design & Architecture

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Benefits & Perks
Visa sponsorship available
Unlimited AI spend
Daily lunch provided
Meaningful founding equity
No hour tracking; ownership-based culture

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Nice to Have
Experience building production AI agents or workflows
Background at strong engineering organizations (e.g., Decagon, Harvey, Factory, Ramp)
Founder experience or participation in a founder fellowship
Competitive achievements in programming, mathematics, debate, or games
Experience as a forward-deployed or solutions engineer

Job Description

About the company

A profitable, seed-stage AI company in San Francisco is building a platform that acts as an internal workforce for businesses. Its AI agents can take ownership of complete business tasks, such as managing accounts receivable through Slack or scheduling via email. Businesses can also use the platform to build their own internal applications.

The role

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Job Overview
Posted Nov 10, 2026
Employment Full-time
Experience Mid-Senior level
Location United States
Category Programming
Company cgs
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