Head of Engineering, iOS

About Us

At Sully.ai, We’re Building the Most Impactful Healthcare Company on Earth

We believe that access to a great doctor is a basic human right. Today, that’s not a reality. Delays, misdiagnoses, administrative chaos, and burnout plague the system.

Our Mission: One Human, One Doctor. We build AI teammates that augment clinicians — scribes, nurses, receptionists, translators — all powered by our own world-class models and deployed in real-world care.

About the Role

We are seeking a Head of Engineering, iOS to own and scale our iOS mobile platform. You will lead end-to-end engineering execution for our iOS app, driving step-function improvements in performance, reliability, and user experience while establishing technical excellence across the mobile stack.

Key Responsibilities

Own end-to-end engineering execution for iOS, from architecture and roadmap through delivery and reliability.

Drive step-function performance improvements, targeting at least 50% reductions in app launch time, memory usage, and crash rates.

Design and operate robust observability, metrics, and automated testing systems to ensure consistent performance at scale.

Lead iOS execution rituals including daily and weekly standups, backlog ownership in Linear, and tight cross-functional coordination with Product, Design, and Backend teams.

Translate product goals into clear dependencies, timelines, and deliverables to keep teams unblocked and shipping.

Drive mobile EHR integration excellence, ensuring seamless integration with Epic Haiku, Epic HyperSpace, and other mobile EHR platforms.

Hard Requirements

Founder-level ownership mindset. You operate like the business depends on your decisions and execution.

Senior, hands-on iOS engineering ability. You actively design systems, write and review production Swift code, and set the technical bar by example.

Deep iOS platform expertise. 7+ years of iOS development with Swift/SwiftUI, UIKit, and modern iOS architectures. Experience shipping consumer-grade iOS apps to the App Store at scale.

Experience in high-intensity environments such as YC-backed startups, early-stage companies, or zero-to-one teams where speed and judgment matter.

Mobile leadership experience. You've led iOS teams (3+ engineers) and own mobile engineering processes, release management, and cross-platform coordination.

Comfort with ambiguity. You turn incomplete product direction into clear technical plans and ship without heavy process.

Bias toward leverage and simplicity. You choose durable solutions and know when to optimize versus when to ship.

Key Results (First 90 Days)

Take full ownership of iOS engineering. Establish yourself as the DRI for all iOS architecture, quality, and delivery decisions.

Ensure end-to-end observability and alerting for core iOS workflows including note generation, medical assistant features, and EHR sync.

Define key performance, reliability, and quality metrics for the iOS app (crash-free rate, memory usage, app launch time, user satisfaction scores).

Identify and ship at least one high-impact improvement — whether performance optimization, memory leak fix, or critical user experience enhancement.

Establish execution cadence, priorities, and quality standards including iOS release process, QA workflows, and automated testing infrastructure.

Audit and improve iOS technical debt including architecture issues, memory leaks (IOS-307), and automation testing setup (E-6337).

If you’ve ever said, “I want to do work that actually matters”, this is it. Let’s build something life-changing, together.

Who Thrives Here

Entrepreneurial to your core: You think in outcomes, thrive in chaos, and take ownership without limits

Mission-obsessed: You’re here to save lives, not just ship features — patients and doctors are your why.

Impact-driven & fast-moving: You sprint toward hard problems and ship with sharp judgment.

Elite teammate: You raise the bar through high standards, direct feedback, and craft excellence.

Why Join S