General Application
Company: Blacksmith
Location: San Francisco
Posted on: April 1, 2026
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Job Description:
About Blacksmith We started by building infrastructure to run CI
workloads really fast. Our first product helps companies run GitHub
Actions substantially faster and cheaper by owning and operating
our own global fleet of bare-metal machines rather than renting
generic cloud VMs. Today, we orchestrate tens of millions of
Firecracker VMs each month, running CI for 2,000 companies and hit
~$10M in ARR in less than 2 years. We operate thousands of
bare-metal machines across multiple regions, regularly schedule 50k
vCPUs concurrently, and run a petabyte-scale Ceph cluster that we
manage ourselves. We’ve raised $13.5M across Seed and Series A, led
by Google Ventures (GV), and we’re intentionally building a small,
but exceptional team. Blacksmith was founded by a team with deep
systems and scaling experience, including building search/ads
infrastructure at Faire, and operating large distributed systems at
Cockroach Labs. Our GTM is led by Jon Boyer, formerly Head of Sales
at Zapier. We’re now extending the same CI infrastructure into a
broader platform: running agent sandboxes at scale and building our
own background coding agent on top of it. Compensation and benefits
Medical, Vision, and Dental insurance. Competitive base equity.
401K match. Unlimited PTO. Annual offsite. Early-exercise stock
options 12 weeks fully paid parental leave (US)
Keywords: Blacksmith, Rancho Cordova , General Application, Engineering , San Francisco, California
