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San Francisco, California, United States
Onsite
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 week, running CI for 7,000+ companies and tens of millions in ARR. We’ve grown 10x so far in 2026.
We operate thousands of bare-metal machines across multiple regions, regularly schedule 100k+ vCPUs concurrently, and run a petabyte-scale Ceph cluster that we manage ourselves.
We’ve raised $58.5M from Seed to Series B, led by Google Ventures (GV) & Peak XV Partners, 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.
As Office Manager, you will own the day to day operations and workplace experience for the Blacksmith San Francisco office.
This is a crucial role. We are an in-person team and we want everyone to enjoy the environment they work in. Your role will deliver an experience that means people want to come in, and guests leave feeling impressed.
What you’ll do
Own the workplace experience. We want the office to be an enjoyable place to be; the latest technology, high end design touches, fully stocked kitchen, catered lunches. You’ll own this end-to-end.
Coordinate internal team events, lunches, dinners. And help with coordinating and managing the external customer and network events we’re hosting in the office.
Employee experience; work anniversaries, birthdays, special events. We want people at Blacksmith to feel recognized and you’ll play a key role in delivering this experience.
Effectively manage the day to day operations of the office. Vendor management, equipment, supplies, facilities.
Negotiate and manage vendor contracts.
Be the first point of contact for all guests.
Always be looking for ways to improve the office experience.
You’re a good fit if you have
Experience in delivering exceptional workplace experience in a similar role.
You understand what makes an in-person office experience enjoyable and can deliver that for the team.
You enjoy creating experiences - you are excited by the little details, you can anticipate the needs of the team and enjoy delivering an experience that people love.
You can effectively manage multiple projects simultaneously and have exceptional eye for detail.
You are comfortable owning logistics and coordinating across the business to deliver initiatives.
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)