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.

Our Traction

• 450+ organizations signed 16 months

• AI agents cut admin by ~2.8 hours daily and reduce onboarding 85%.

• 5M+ Clinical Tasks completed to date, serving 36+ specialties.

• Raised $25M from YC, Eric Yuan, Amity, Semper Virens

• Patented AI architecture (MedCon-1) outperforms GPT-4.5, Gemini, Claude on clinical reasoning tasks

Sully requires A-players capable of 4 months = 1 year output.

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, and automation testing setup.

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 Sully.ai?
Revolutionizing the antiquated $800B+ Healthcare market

50%+ of us are ex-founders. We hire A-players, not passengers

️ Speed matters - we operate with urgency, autonomy, and ownership

You’ll work on real, first-of-their-kind problems at the edge of AI and medicine

️ Your work helps doctors reclaim their time - and patients get better, faster care

Sully.ai is an equal opportunity employer. In addition to EEO being the law, it is a policy that is fully consistent with our principles. All qualified applicants will receive consideration for employment without regard to status as a protected veteran or a qualified individual with a disability, or other protected status such as race, religion, color, national origin, sex, sexual orientation, gender identity, genetic information, pregnancy or age. Sully.ai prohibits any form of workplace harassment.