Founding Mobile Engineer (ios)

About the Role

Our client Jetty is building the first AI functional health doctor and coach, starting with the hardest use case: people living with chronic illness. As our Founding Mobile Engineer (iOS), you'll own the entire Jetty mobile experience - a live product already in the hands of real users - and shape it into something that feels clear, calm, and trustworthy even when the underlying health data is messy, sensitive, and deeply personal. This is our first full-time mobile engineering hire, which means you won't just write code - you'll help define how Jetty builds.

What You'll Do

• Own the mobile product end-to-end - design, build, and ship user-facing features across the full Jetty iOS app, from concept to production
• Transform complex inputs into trustworthy experiences — translate voice, text, passive health signals, and AI-generated outputs into UI flows that feel intuitive and reliable
• Set the bar for mobile craft - take direct ownership of performance, reliability, and accessibility across the app
• Integrate AI thoughtfully — embed AI-driven insights and health summaries into the product while handling uncertainty, latency, and failure states in ways that maintain user trust
• Instrument and iterate — implement mobile analytics across key events, flows, and retention signals to close the feedback loop and improve the product quickly
• Shape product and architecture decisions — partner directly with Design, Backend, and AI leadership to influence how the product evolves and establish the technical foundations for the mobile codebase

What You'll Bring

Required:

• 2–5 years of experience building and shipping mobile apps, ideally in a startup or fast-moving product environment
• Strong iOS fundamentals (Swift, UIKit and/or SwiftUI) with a clear track record of owning features from idea to launch
• Product instincts that go beyond screens — you think in flows, states, and edge cases, and you catch the gaps before users do
• Architectural judgment to make pragmatic tradeoffs: you know when to optimize for speed and when to invest in maintainability
• Comfort navigating ambiguity — you can pick up a loosely defined problem, make sound decisions with incomplete information, and ship something solid
• A genuine high bar for craft — you notice the small details that make a product feel polished and trustworthy, and you hold yourself to them

Nice to Have:

• Android experience (Kotlin / Jetpack Compose) or prior cross-platform development
• Experience with design systems or reusable component libraries
• Hands-on experience with audio/voice input, background processing, push notifications, or real-time UX patterns
• Prior work in a privacy-sensitive domain — health, finance, or similar — where data handling and user trust carry real weight

Why Join Jetty

• You'll work on something that matters — chronic illness affects hundreds of millions of people, and most health tools fail them. You'll build something designed from the ground up to actually help.
• You're not joining a team — you're helping build one — as the first full-time mobile hire, you'll have real influence over technical culture, tooling choices, and how the engineering team scales
• You'll work directly with the founding team — a former senior AI leader from Palantir and a former venture investor from NEA, backed by the top seed investor in NYC and $2M in funding
• The product is live, not theoretical — you'll be shipping to real users from day one, with immediate feedback loops and tangible impact
• Competitive salary and meaningful equity — we're early enough that your ownership stake actually means something