Principal Software Engineer, Mobile

Role Description

The trades don't happen at a desk. They happen in a truck, in a crawlspace, at a kitchen table while the homeowner decides yes or no. That's where this app has to work.

Mobile isn't a companion to the product here. For the tech in the field and the homeowner signing off on the estimate, it is the product. You own that surface end to end.

You're the first mobile hire. The app people run their day on, the homeowner-facing experience that closes the job, the offline behavior for when the signal drops in a basement, the architecture everything else sits on. That's yours to set, not inherit.

The hardest problems here are unsolved on purpose. What does an agent feel like in your hand, with gloves on, in direct sunlight, between two appointments? Nobody has figured that out yet. If that's the part you skip to, this is the role.

What you'll do

• Own native iOS end to end, from the field app a tech lives in all day to the homeowner-facing proposal that closes the sale.
• Build agents as a first-class part of the mobile experience, not AI bolted onto a form. You'll help define what agentic actually feels like on a phone in the field.
• Make it work where the work happens. Offline-first, fast sync, no spinner between the truck and the job. The bar is "works in a crawlspace," not "works on wifi."
• Build the internal tools we run on. When something is repetitive or fragile, your first move isn't a new SaaS subscription. It's to build it.
• Make the early architectural calls, the ones cheap to make now and expensive to unwind later, and set the bar for how mobile gets built here.

Qualifications

• A senior or staff-level track record shipping native iOS in Swift and SwiftUI.
• Experience owning consequential apps end to end, in production, in real users' hands.
• Apps that held up in messy real-world conditions: bad signal, interruptions, one hand, sunlight.
• Strong fundamentals over any specific tool; focus on state, performance, and architecture.
• Experience building with AI or a strong desire to do so.
• Low ego, high ownership; proactive problem-solving.
• Helpful, not required: early-stage or 0 to 1 experience, agent or LLM systems in production, exposure to the trades or vertical SaaS.

How we work

• Always be learning. The day you're too sure to be corrected is the day you start falling behind.
• Earn it daily. We earn trust by doing what we said and saying the hard part out loud.
• Show, don't tell. We get our opinions by building, not by meeting about building.
• Go make it happen. The problem you saw is now yours. No waiting for permission or a ticket.

Our stack

We're all builders here, whatever the title. You'll prototype with Claude or Codex before you pull in another engineer. On mobile that's native Swift and SwiftUI, shipped through Xcode and TestFlight. Around it we run on Claude Code, Codex, Linear, Vercel, Railway, Supabase, and GitHub. We're early and pragmatic. We'll use whatever gets us to the answer fastest.