Senior/Staff iOS Engineer (iOS Lead) - Ethena Pay

Role overview Serve as the hands-on technical lead and primary developer for a consumer finance iOS app used to spend, send, and manage money. Own its architecture, implementation, security-sensitive authentication surfaces, visual quality, and App Store releases, while setting the direction for future mobile development.

Responsibilities - Write and ship a substantial share of the app, focusing on complex features, critical paths, and interface polish. - Own the native iOS architecture, build process, and quality standards across engineering and design. - Manage signing and release operations, including certificates, provisioning, entitlements, associated domains, TestFlight, and App Store submissions. - Design and maintain core app surfaces that are clear, documented, and suitable for continued development. - Set and review testing practices, resolve interface quality gaps, and uphold a high bar for visual detail. - Act as the primary iOS technical decision-maker and reviewer, mentoring teammates and guiding the mobile roadmap.

Requirements - Experience shipping and maintaining native iOS apps that handle money or sensitive financial or crypto data. - Strong Swift and SwiftUI skills, including modern concurrency, state and navigation architecture, performance, and memory management. - A portfolio of polished shipped apps, with close attention to design fidelity, motion, and haptics; experience working closely with designers is expected. - Experience integrating several relevant SDK categories, such as passkeys/WebAuthn, wallet or authentication infrastructure, wallet connectivity, identity verification, account funding, or push and attribution. - Secure on-device data handling, including Keychain and biometric protections, and care to prevent sensitive data leaking into logs or analytics. - Confidence evolving a large existing iOS codebase and setting technical direction. - Fluent use of coding agents and related development tools, with the judgment to verify their output and decide where they fit.

Nice to have Hands-on familiarity with modern iOS design conventions, including Liquid Glass, SF Symbols, and Dynamic Type.