Applied AI Engineer + Infrastructure Engineer

Company Overview

Steel is an open‑source browser infrastructure for AI agents and apps. We make it easy for developers to ship products that interact with the web—reducing the time spent on browser pools, proxies, CAPTCHAs, and session state. In 2025 we grew 50×: 6,000+ GitHub stars, dozens of paying customers, and millions of sessions served monthly. Dedicated Chromium runs on Firecracker VMs for sub‑second cold starts.

Location & Compensation

Toronto, ON – Onsite. Base salary $160k–$240k USD plus equity.

Technical Stack

TypeScript, React/Next.js, Node.js, AWS, Firecracker, PostgreSQL, Redis. 4+ years of experience required for both roles.

Applied AI Engineer Responsibilities

Shape how AI agents interact with the web.

• Build open‑source frameworks and demos on the Sessions API.
• Run experiments on models, prompts, and harnesses to determine what works best.
• Create evaluations against ...