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11x11xSeattle, WA

Senior Fullstack Software Engineer, AI Agents

Build and scale fullstack systems powering AI agents, from prototyping to deployment. Requires 3+ years experience with TypeScript, React, Next.js, Node.js, and interest in LLM applications and agent orchestration.

150k – 250k/yr
Remote3+ YOEFullstack Engineering

About the role

What You'll Do

  • 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.

Ideal Candidates Have

  • 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.

Bonus: experience with large language models, prompt engineering, or AI infrastructure.

Compensation

Canada base salary range: CAD $180,000 – $225,000
Seattle base salary range: USD $150,000 – $250,000 *Final offer will be based on a variety of factors, including role level, relevant experience, skills, and job-related expertise.

Skills

TypeScriptReactNext.jsNode.jsLLMsPrompt EngineeringAI Infrastructure
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