MTS - Security Engineer

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. We're working to give craft workers and project leaders better visibility into what's happening on-site, while creating a system where the reality of construction and the chaos of each day are finally available to the people running the project.

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 releases raw video.

Ironsite is backed by leading investors (8VC, South Park Commons, Saga Ventures) and prominent operators across technology and construction, including Eric Schmidt, Jeff Dean, Jeff Rothschild, Mark Leslie, Scott Wu, Eric Glyman, Karim Atiyeh, Russell Kaplan, and others, alongside over a dozen construction industry operators who have joined us as partners in building this.

Longer term, we believe Ironsite is the foundation for what construction becomes in the next decade. The systems we're building will be the operating system for how the physical world gets built. We see a future where craft workers are more valued, more visible, and better paid for the skill they bring, and where the industry finally has the intelligence layer that makes autonomous construction possible. Both start with the same foundation.

We're hiring our first Security Engineer to own security from every angle: a wearable camera fleet and the jobsite networks it runs on, petabyte-scale video and ML systems, the cloud they live in, the platform our customers log into, and the AI agents our engineers now build with every day.

AI agents now find and exploit vulnerabilities faster than vendors can patch. A model wrote a working remote-root exploit for the Linux kernel this fall, and the CVE stream across libraries, runtimes, kernels, CAs, and vendors has become a firehose. Knowing exactly what we run, everywhere, and responding methodically is the core of the job. Alongside it, you'll protect first-person video of thousands of workers, the sites of critical infrastructure under construction, and our promise that raw video never leaves.

The base pay range for this role is $230,000 – $280,000 per year.