Fullstack Software Engineer, AI Agents

11x.aiSan Francisco, CA
$150,000 - $250,000

About The Position

11x Most of what Go-to Market teams do all day isn't selling. It's research, list-building, follow-ups, and data entry — work that should never have been a human job in the first place. We're building a system of AI workers that own GTM execution end-to-end. Alice creates demand, and Julian captures it. They take the busywork off the table so GTM teams can can do what they do best: building relationships and closing deals. Backed by $75M+ from a16z and Benchmark, headquartered in San Francisco, and trusted by Checkr, Xerox, Sage, and Armanino. We're hiring ambitious people who want to define how the next generation of companies accelerate growth. About the Role We're looking for a fullstack engineer with a passion for applied research and cross-functional collaboration. In this role, you’ll work closely with engineering leadership and our AI partners to prototype, build, and scale the next generation of autonomous digital workers. This is an immersive opportunity to deepen your expertise in large language model applications, system design, and human-AI interaction—while learning how fast-moving AI companies operate from the inside. You’ll gain hands-on exposure to the latest model capabilities, contribute to internal experimentation, and help translate cutting-edge ideas into real-world tools.

Requirements

  • 3+ years of experience in a product-oriented software engineering role.
  • A strong foundation in Typescript, React, NextJS, and NodeJS.
  • Experience working in fast-paced environments with a track record of rapid learning and iteration.
  • Interest in research, technical writing, or contributing to knowledge-sharing within a team.

Nice To Haves

  • Experience with large language models, prompt engineering, or AI infrastructure.

Responsibilities

  • Design, build, and iterate on fullstack systems that power AI agents from concept to deployment.
  • Research and evaluate new approaches to agent orchestration, prompting strategies, and model alignment.
  • Collaborate with product, design, and engineering teams to improve UX and usability for non-technical users.
  • Share learnings, document findings, and contribute to the evolution of internal best practices.
  • Participate in peer reviews, brainstorming sessions, and technical deep dives with our global team.
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