Senior iOS Engineer - Consumer Growth

Role:

As an iOS Engineer in Consumer Growth at Sword, you’ll build experiences that help people discover value in our consumer products and keep coming back.
Your work will span acquisition entry points, onboarding, subscription conversion, activation, and retention. Working closely with Product, Design, Data, Marketing, and backend engineers, you’ll turn growth hypotheses into polished iOS experiences, measure their impact, and refine them based on what you learn.
You’ll combine strong native engineering with thoughtful product decisions, helping the team move quickly while maintaining the quality and trust customers expect.

What you’ll be doing:

• Build and improve iOS experiences across onboarding, account creation, paywalls, subscriptions, and ongoing engagement;
• Connect acquisition campaigns and web journeys to relevant in-app experiences through Universal Links and reliable navigation;
• Implement subscription purchase flows, purchase restoration, and entitlement handling in collaboration with backend engineers;
• Deliver controlled experiments using feature flags, targeted experiences, and accurate analytics instrumentation;
• Work with Product, Design, and Data to identify friction, define experiment requirements, and evaluate results after release;
• Create reusable UI components and application foundations that support efficient experimentation;
• Maintain app responsiveness, accessibility, stability, and consistent behavior across supported devices and iOS versions;
• Own features through implementation, testing, release, monitoring, and iteration;
• Use AI tools to accelerate development while validating generated code and preserving engineering quality.

What you need to have:

• Experience shipping and maintaining production iOS applications;
• Strong proficiency in Swift and experience building interfaces with SwiftUI;
• Solid understanding of iOS architecture, application lifecycle, state management, and Swift concurrency;
• Experience integrating APIs and handling loading, failure, and interrupted user journeys gracefully;
• Experience with automated testing, debugging, memory management, and performance analysis;
• Ability to instrument user journeys and use product data to inform engineering decisions;
• Good product judgment and attention to interaction quality, accessibility, and user trust;
• Ability to work across disciplines, communicate trade-offs, and own features from concept through production;
• Practical experience using AI in your engineering workflow and critically reviewing its output;
• Fluent English, written and spoken.

Nice To Have:

• Experience with StoreKit, subscriptions, or RevenueCat;
• Experience with A/B testing, feature flags, Universal Links, or privacy-aware acquisition measurement;
• Experience improving conversion, activation, or retention in a consumer application;
• Familiarity with UIKit interoperability, push notifications, and lifecycle engagement experiences.