MTS - Lead Mobile Engineer

Location: San Francisco

Department: Engineering

Location Type: IN_OFFICE

Employment Type: FULL_TIME

About Ironsite

The Role

What You'll Build

• Device provisioning & packaging. The end-to-end process of turning off-the-shelf Android phones into Ironsite body cameras such as imaging, configuration, lockdown (kiosk / lock-task mode), security hardening, and the repeatable pipeline that lets us provision hundreds of devices quickly and identically. You’ll make going from box to field-ready fast, consistent, and bulletproof.
• App reliability as a managed metric. Own crash rate, ANRs, battery drain, upload failures, and data loss as tracked numbers with targets. Reliability is the product.
• Field support and triage. The process that takes an issue from a superintendent's phone call to root cause, fix, and release. This includes clear escalation paths, a working relationship with field ops, and tooling that lets non-engineers capture what went wrong.
• Observability and remote diagnostics. Crash reporting, structured logging, remote log retrieval, device and session diagnostics, and feature flags. With these you can debug a phone on a jobsite 2,000 miles away without anyone touching it.
• Release and maintenance pipeline. Staged rollouts, kill switches, fast rollbacks, and regression testing across a wide device and OS matrix. You'll also handle Android OS and dependency upgrades and keep tech debt from compounding. Shipping should be boring and safe.

Technical Challenges You'll Solve

• Debugging in conditions you can't recreate. Bugs show up in the field on specific devices, OS versions, and network conditions, often with gloves on and no signal. You'll build the instrumentation and the instincts to find root causes from logs and telemetry, then fix them so they stay fixed.
• Being the interface every other team’s work depends on. Ironsite’s mobile layer is where the outputs of our hardware, AI research, data infrastructure, and integrations teams converge. The app has to be flexible enough to expose new capabilities as they ship, principled enough to keep the experience coherent as more layers in, and rigorous enough to give every other team fast feedback on how their work is landing. You’ll be at the center of that.
• Offline-first as a first-class citizen, not an afterthought. Jobsites have unreliable networks. A device might have no signal for hours. You'll design the capture, storage, and upload pipeline so no footage is ever lost, no matter what the network does.
• Building trust with a workforce skeptical of tech. Craft workers have been the object of a lot of failed jobsite technology. The experience has to feel like it was built for them, not at them. Every UX decision either builds trust with the workforce or erodes it. You’ll be the person making those calls.

What We're Looking For

• Deep native Android expertise in Kotlin (required). You’ve shipped production Android apps built in Kotlin that work reliably across a wide range of devices, OS versions, and network conditions. This is the core, non-negotiable requirement for the role.
• A background in Computer Science, Software Engineering, Mathematics, Physics, or a related technical field, or equivalent hands-on experience.
• Strong command of the modern Android stack like Kotlin, Jetpack / Jetpack Compose, coroutines, and the Android lifecycle, and a track record of shipping polished apps to the Play Store.
• Backend and systems fluency to support the mobile experience end to end: production experience with backend services (Node.js, PostgreSQL, Redis) and cloud infrastructure (AWS). You know how mobile decisions ripple through the whole stack, and vice versa.
• Solid background in API design, third-party integrations, and real-time data and analytics surfaces, where correctness, performance, and clarity for downstream teams all matter at once.
• A collaborative instinct as this role sits at the intersection of every other technical team, and you’re the kind of engineer other teams want to work with because their work lands better through you.
• Systems thinking across end-to-end product architecture; you care as much about the seams between systems as the systems themselves.
• Typically 5+ years of mobile-focused product experience, the majority on native Android, with a track record of shipping things you’re proud of.

Preferred Qualifications

• Experience building Android for real-world conditions such as offline-first data, sync conflicts, unreliable networks, and non-technical users.
• Experience building and managing fleets of Android devices at scale (MDM, kiosk/lock-task mode, OTA updates, device provisioning), directly relevant as we scale BOA past 1,200 devices.
• Consumer-grade polish, where user experience and engagement matter as much as engineering rigor.
• Experience in construction, manufacturing, or similar operational industries where your users are in the field, not behind a desk.
• Genuine excitement for industries underserved by software, and interest in becoming one of the engineers who builds the mobile experience the physical world runs on.
• Familiarity with construction management software (Procore, Autodesk, Trimble), HR tech, or similar enterprise workflow tools.

Location, Compensation, & Perks

• San Francisco Bay Area (on-site)
• Base salary: $150k-$250k per year, commensurate with experience
• Meaningful founding-team equity.
• Full benefits including health, dental, vision, and 401(k) with 6% match
• Daily catered breakfast and lunch
• Office in San Francisco, next to Oracle Park and the Caltrain