Technical Sourcer

Blacksmith; San Francisco (CA); On-site; USD 120,000 - 170,000; Full time

Job summary

Blacksmith in San Francisco is expanding its engineering team as we scale CI infrastructure and build our platform for faster, cheaper CI workloads. We’re hiring for roles across systems and product engineering and you’ll own the recruiting strategy for this critical function.

You’ll build talent pools, research where top engineers are and engage them with compelling, technically grounded outreach. You’ll track pipeline metrics and drive improvements to our hiring funnel in a fast-paced startup

Qualifications

• 3+ years of engineering recruiting in a fast-paced startup environment.
• Ability to engage with highly technical content and craft compelling messages.
• Exceptional knowledge of the broader technical talent landscape and where top engineers are today.
• Experience using the latest sourcing tools and crafting scalable AI workflows.

Responsibilities

• Own recruiting strategy for engineering roles across systems and product engineering.
• Build talent pools and identify high-caliber engineering talent networks to tap into.
• Conduct deep research into engineering talent through papers, blogs, open-source contributions, social media, and talks.
• Craft engaging outreach which engineers will respond to.
• Track pipeline data and identify challenges and opportunities within our hiring funnel.

Skills

Engineering recruiting

Talent research

Outbound outreach

Sourcing tools

AI workflows

Tools

Sourcing tools

AI workflows

Job description

• 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 10,000+ companies and tens of millions in ARR. We’ve grown 20x so far in 2026.
• We operate thousands of bare-metal machines across multiple regions, regularly schedule 300k+ vCPUs concurrently, and run a petabyte-scale Ceph cluster that we manage ourselves.
• We’ve raised $125M from Seed to Series C, led by Sequoia, 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.

What you’ll do

• Own recruiting strategy for engineering and roles across both systems and product engineering.
• Build talent pools and identify the highest caliber engineering talent networks to tap into.
• Conduct deep research into engineering talent. Research papers, technical blogs, open-source contributions, social media activity, conference talks. Identify how we can engage engineers in a way that differentiates us.
• Craft engaging outreach which the best engineers will respond to.
• Track pipeline data and identify challenges and opportunities within our hiring funnel.

You’re a good fit if you have

• 3+ years of engineering recruiting within a fast paced startup environment, with a rigorous bar for talent.
• Ability to engage with highly technical content, understand it and craft messages from it that are genuinely compelling
• Exceptional knowledge of the broader technical talent landscape and where the best engineers are today.
• You know and have used the latest tools for sourcing and can craft AI workflows which are accurate and scalable.
• Autonomous, enjoy a challenging environment where you’ll be pushed for excellence and what to continuously be learning.