Firecrawl
Backend Infrastructure Engineer
$235K–$260K
San Francisco HQ +1 · Hybrid · Full-time · Posted Jul 12, 2026
- Location
- San Francisco HQ
Toronto Hub - Experience
- 3+ years in backend, networking, or infrastructure engineering.
- Visa sponsorship
- Candidates must already be authorized to work in the US or Canada. In the US, the company supports H-1B transfers, F-1 OPT and STEM OPT, TN (Canada and Mexico), and E-3 (Australia), but cannot sponsor new H-1B visas for candidates outside the US. Canadian work permit sponsorship is considered case by case through the Toronto Hub.
About the job
Build and operate backend infrastructure for reliable, high-throughput web data collection, including improving performance against sites with aggressive defenses.
What you'll do
- Build and maintain infrastructure for reliable data collection at scale.
- Improve success rates against defended websites and manage proxy health, rotation, and cost efficiency.
- Improve throughput and reliability under heavy, spiky load; debug and fix intermittent failures across the stack.
What they ask for
- Experience with networking, proxies, or high-throughput backend systems.
- Strong focus on reliability and comfort working in messy, adversarial problem spaces.
- Ability to own systems end to end and maintain them in production.
- 3+ years in backend, networking, or infrastructure engineering.
Pay
$235,000–$260,000 USD/year (SF) (base salary); $217,000–$233,000 CAD/year (Toronto) (base salary)
Tools
proxies
AI focus
Build infrastructure for collecting web data that AI agents and AI companies use.
Model-written summary · the original posting is authoritative