Ironsite attacks the single biggest cost lever in construction — labor — by revolutionizing how productivity is tracked and optimized. Backed by South Park Commons.
About the role
We're hiring a Head of ML Engineering to own how our research team's models get tested, labeled, shipped, and run in production. Research builds the models. You'll build everything around them: the systems research uses to A/B test models on live jobsites, the tools our labelers use every night, the data tooling research trains from, and the orchestrator and inference stack that deliver reports by 5 AM. You'll start as a hands-on tech lead and grow the team from there. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- 7+ years of software engineering, with at least 3 years building production ML systems
- Experience leading a small team as a tech lead or manager while still shipping a lot of code yourself
- You've built experimentation or A/B testing systems in production
- You've built internal tools that non-engineers use every day, such as labeling tools or operations tools
- Hands-on experience with MLOps and GPU inference
- You can debug across the stack: from a wrong number in a customer report back to the model, the data, or the pipeline
More about this role
Ironsite is building the intelligence layer for the physical world. We design our own wearable hardware, deploy it alongside craft workers, and transform a shift's footage into a next-morning report. Our internal team and purpose-built models label the data overnight and deliver actionable insights to superintendents by 5 AM.
We are accelerating the speed, efficiency, and predictability of construction, especially for complex, mission-critical infrastructure projects, including data centers, LNG facilities, sports stadiums, hospitals, and other large-scale developments, by training AI models on egocentric construction footage and labor productivity data. We are built with a pro-worker philosophy at our core: we believe technology should empower the workforce, not replace it.
Ironsite is deployed across several of the largest active construction projects in the country. To date, we've captured more than 100,000 hours of construction footage across seven states, now process thousands of hours of site activity every day, and maintain a worker opt-out rate below two percent. This is enabled by a workforce-first architecture that anonymizes devices, captures no audio, and never...
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