MTS - Lead Mobile Engineer

About Ironsite 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 is 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 [... source excerpt omitted ...] ossible. Both futures start with the same foundation. The Role We're hiring an exceptional Founding Mobile Engineer to help build the Ironsite mobile platform for craftworkers. You'll own the mobile experience craftworkers carry in their pocket, and the field tools superintendents use to run their jobsites in real time. This is the most interactive surface Ironsite exposes to the world, and where every other team's work at the company ultimately shows up. Hardware, AI research, video pipelines, integrations with the industry's legacy tools. You'll be the person who makes sure it lands well in the hands of the people who matter most. This is where our pro-workforce philosoph [... source excerpt omitted ...] uild the physical world, and you'll ship meaningful initiatives that directly impact tens of thousands of craft workers and dozens of the largest contractors in the country. What You'll Build Craft Worker Mobile Experience. The worker-facing mobile web app that turns Ironsite from something workers wear into something they use daily, including profiles, stats, achievements, badges, the rewards marketplace, exportable resumes, and multi-language daily notifications with SMS delivery for workers in the field. This is the first mobile product built specifically for the recognition and career-building layer of the trades, and it's where every other team's work reaches the workfor