# Senior Fullstack Software Engineer, AI Agents - Remote

**Company:** [11x](https://hotfix.jobs/companies/11x-ai)
**Location:** Seattle, WA
**Role:** Fullstack Engineering
**Salary:** $150k – $250k/yr
**Experience:** 3+ years
**Skills:** TypeScript, React, Next.js, Node.js, LLMs, Prompt Engineering, AI Infrastructure
**Posted:** 2026-05-15

> Builds and scales fullstack systems powering AI agents, researches agent orchestration and prompting, and collaborates cross-functionally to enhance UX. Requires 3+ years experience with TypeScript, React, Next.js, Node.js.

## Job Description

## 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:** CAD $180,000 – $225,000  
**Seattle:** USD $150,000 – $250,000  
*Final offer based on role level, experience, skills, and expertise.

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