Backend Infrastructure Engineer
You'll work on the infrastructure that makes Firecrawl fast and reliable against a web that constantly changes and fights back. This is deep systems work: keeping success rates high against sites with aggressive defenses, managing the proxy layer that powers reliable data collection at scale, and pushing throughput and reliability under heavy, spiky load. When Firecrawl "just works" on a site that tries hard to stop it, that's this team. You'll own real infrastructure from day one, not tickets in a backlog.
Salary Range: $235,000–$260,000 USD/year (SF) / $217,000–$233,000 CAD/year (Toronto)
Equity Range: Competitive equity. Details shared during the process.
Location
San Francisco, CA (SF HQ) or Toronto, ON (Toronto Hub). Hybrid, onsite 3+ days a week.
Job Type: Full-Time
Experience: 3+ years in backend, networking, or infrastructure engineering
Work Authorization: Open to candidates already authorized to work in the US or Canada. In the US, we also support H-1B transfers, F-1 OPT and STEM OPT, TN (Canada and Mexico), and E-3 (Australia). We’re not able to sponsor new H-1B visas for candidates outside the US. For Canada, we’ll consider work permit sponsorship case by case through our Toronto Hub.
What You'll Do
Build and maintain the infrastructure that powers reliable data collection at scale
Improve success rates against sites with aggressive defenses
Own the health, rotation, and cost efficiency of the proxy layer
Push throughput and reliability under heavy, spiky, real-world load
Debug hard, intermittent failures across the stack and make them stay fixed
What We're Looking For
You've worked on networking, proxies, or high-throughput backend systems
You're relentless about reliability and comfortable in messy, adversarial problem spaces
You can own a system end to end and keep it healthy in production
You move fast and close the loop. You'd rather ship, measure, and iterate than perfect on paper
What We're NOT Looking For
Someone who wants clean, well-defined problems only
Someone who avoids on-call or production ownership
Someone who needs the environment to be stable to do their best work