Senior iOS Mobile Developer - Swift / SwiftUI - Remote Contract

About HeartStamp HeartStamp is an AI-native consumer brand building a category-defining hyperpersonalization product. Our web product is live in the US. We are now building our flagship iOS app. We are a small, founder-led, distributed team. We move fast, we ship, we hire well.

The Role We are hiring a Senior iOS Engineer to own end-to-end delivery of our iOS app. Design is in production. The supporting platform is already running. You are the primary iOS engineer on the project. This is a hands-on role.

You write production Swift every day, make the architecture calls, and ship to the App Store.

What You'll Do • Own the iOS app end-to-end architecture, networking, state, navigation, offline, App Store submission. • Build a fast, polished native experience in Swift and SwiftUI on top of our existing platform APIs. • Integrate with AI/LLM systems, including streaming responses to the UI. • Implement payments cleanly (Stripe iOS SDK, Apple Pay, StoreKit 2). • Handle media on device camera, PhotoKit, image upload, live preview at production quality. • Ship to TestFlight on a weekly cadence and drive App Store Connect submission. • Use Claude, Codex, Cursor, or your preferred AI coding tools as a daily force multiplier.

What We're Looking For • 5+ years of professional iOS development • 3+ App Store apps shipped as lead or sole iOS engineer • Deep Swift / SwiftUI / Swift Concurrency.

UIKit when SwiftUI is the wrong tool • WKWebView + JS bridge experience on a hybrid app • Stripe iOS SDK, Apple Pay, and StoreKit 2 in production • AI / LLM API integration on mobile (streaming, retries, content safety) • Strong networking, caching, and offline strategy • iOS CI/CD (Fastlane, Xcode Cloud, or GitHub Actions) and TestFlight release management • XCTest, snapshot testing, Sentry or comparable crash analytics • AI-native daily workflow • Strong written English.

At least 4 hours of US Pacific overlap Nice to Have • Android (Kotlin / Jetpack Compose) production experience • Canvas / drawing / design-tool app experience • Print or e-commerce product experience Engagement Terms • $5,000-$5,500 USD/month for EET and Latin American candidates ($60K-$66K/year).

US and Canadian candidates welcome but compensation will be benchmarked separately to local market rates. • Full-time independent contractor, monthly retainer • 50 hours/week with flexibility for ship-week sprints • Performance and compensation review at 91 days • Remote, with at least 4 hours of US Pacific overlap Timeline • Posting opens Tuesday April 28, 2026 • Resume + screening review rolling, starting May 1 • Final interviews May 11 to May 15 • Target start date Monday May 18, 2026 To Apply Submit your resume.

Strong candidates get a screening questionnaire, then a technical call, then a paid technical exercise. Contact [email protected] Education Bachelor's (Required) Experience iOS development 5 years (Required). App Store apps shipped as lead 3 (Required).

WKWebView + JS bridge 1 production app (Strongly Preferred). Language English (Required) Work Location Remote (Americas, Europe, South America) Pay $60,000.00 - $65,000.00 per year Benefits • Flexible schedule Work Location Remote Apply tot his job Apply To this Job