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.
We’re looking for someone to work directly with me (co-founder & CEO) and also run our SF office.
This is a mix of executive assistant and office lead. You’ll handle the day-to-day stuff that keeps things unblocked, and also make the office a place people actually like being in.
If things are running well, people shouldn’t have to think about logistics at all. That’s the bar.
Working with me (EA side)Manage my calendar and scheduling
Help triage email and keep things moving
Book travel and handle logistics
Help with random things that come up (this will vary a lot)
Keep me organized and on top of things
Set up and improve the SF office over time
Furnish and decorate it so it actually feels like a good place to work
Keep everything stocked (food, snacks, supplies, etc.)
Handle new hire setup (desks, equipment, onboarding logistics)
Coordinate deliveries, vendors, and anything operational
Plan events, team dinners, off-sites, etc.
Make the office feel welcoming and high-energy
Help people when they need things
Notice gaps and fix them without being asked
You’re very organized and reliable
You’re proactive; you don’t wait to be told what to do
You have good judgment and can prioritize well
You have experience working at a high-growth startup
You like being around people and making things run smoothly
You’re comfortable working closely with a founder
You want to be in-office in SF 5 days/week
You’ve done EA, office management, or ops before
You’ve worked at a startup
You have good taste and care about how spaces feel
Competitive salary + equity
Health, dental, vision
401k match
Unlimited PTO
Annual offsite
Early exercise
