Founding iOS Engineer - Health & Longevity Startup

Skyrocket Ventures, Inc.; San Francisco (CA); On-site; USD 220,000 - 300,000; Full time

Job summary

Skyrocket Ventures, Inc. is seeking a founding iOS engineer to build the next generation health and longevity mobile experience in San Francisco. You will own mobile architecture, deliver high-performance features, and collaborate across product, design, and clinical teams.

You will work in a fast-paced startup environment, shipping Swift-based apps with HealthKit integration and cross-platform considerations, while maintaining accessibility and reliability on all devices.

Qualifications

• Shipping consumer iOS apps with clear ownership and impact on users.
• Expertise in Swift, including native architecture, concurrency, memory management, production debugging, and performance optimization.
• Proficiency in SwiftUI and UIKit; building native modules that bridge Swift with React Native.
• Understanding of app architecture, state management, networking, testing, and App Store release processes.
• Strong product judgment and attention to interaction details; balance quality and speed.
• Proven ability to work independently in a startup or small engineering team.

Responsibilities

• Designing and building mobile experiences in Swift.
• Collaborating with product, design, and clinical teams to clarify health information.
• Owning mobile architecture, reusable components, and Swift↔React Native integration (HealthKit, auth, notifications, media).
• Improving app performance, navigation, accessibility, and reliability across devices and networks.
• Owning testing, observability, release tooling, and App Store delivery with sensitive data handling.
• Working with web and backend engineers on shared data contracts and cross-platform development patterns.

Skills

Swift

SwiftUI

UIKit

Concurrency

Performance optimization

Tools

HealthKit

React Native

Expo

Job description

Founding iOS Engineer - Health & Longevity Startup

The position is based in the company’s office in San Francisco. All of the company’s engineers work in the office 5 days/week, and it seeks candidates who will be excited about working in a fast-paced, hard-working, high-performance environment where teammates are together in person.

The company is building a new healthcare system that involves diagnostics, preventative healthcare, fitness/performance/health optimization, AI, and longevity. The company's ambition is to build the future of health.

The company has about 60 employees and 15 engineers. It has raised a very large round of series B funding and has already achieved a $1 billion valuation. Revenues are growing very rapidly, and the company is now moving towards hyper growth.

The company will pay a salary of $220k-$300k, plus equity which could be very lucrative.

Job Responsibilities

• Designing and building mobile experiences in Swift.
• Collaborating with product, design, and clinical teams to make complex health information clear and useful.
• Owning mobile architecture, reusable components, and integration between Swift and React Native, including native capabilities such as HealthKit, authentication, notifications, and media access.
• Improving app performance, navigation, accessibility, and reliability across devices and network conditions.
• Owning testing, observability, release tooling, and App Store delivery, with careful handling of sensitive health information.
• Working with web and backend engineers on shared data contracts, reusable logic, and development patterns that help the team ship across platforms.

Qualifications

• Track record of shipping and maintaining consumer iOS applications, with clear ownership of the work and its impact on users.
• Expertise in Swift, including native app architecture, concurrency, memory management, production debugging, and performance optimization.
• Skilled with SwiftUI and UIKit, Apple’s frameworks, and building native modules that connect Swift with React Native.
• Understanding of app architecture, state management, networking, testing, and App Store release processes.
• Strong product judgment and attention to interaction details, with the ability to balance quality and delivery speed.
• Proven ability to work independently in a startup or small engineering team.

Nice to have

• Experience with React Native, Expo, and TypeScript, including app architecture, state management, production debugging, and performance optimization.
• Interest in healthcare, wellness, or longevity.