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.