Senior/Staff iOS Engineer (iOS Lead)

Full-time/Company: Ethena Labs

Ethena Labs builds a consumer money app — the native iOS app is the primary way users hold and move money. This role focuses on shipping a polished, secure, design-led iOS experience that feels fast, fluid, and pixel-perfect.

Responsibilities

• Be the top contributor: write and ship the majority of the app yourself, including the hardest surfaces and polish.
• Own the native iOS app end-to-end — architecture, build, and quality bar.
• Coordinate the App Store release pipeline: certificates, provisioning profiles, entitlements, associated domains, TestFlight/App Store submission.
• Own core app surfaces with full design authority; keep implementations legible, documented, and easy for the team to extend.
• Raise iOS quality and visual craft, enforce a test strategy, and close UI/polish gaps against the Liquid Glass design language.
• Act as default reviewer and decision-maker on iOS, mentor the team, and drive mobile direction and roadmap.

Requirements

• Shipped and maintained native iOS apps handling real money or sensitive financial/crypto data from world-class consumer apps where design is a competitive advantage (e.g., Revolut, Monzo, Cash App, Robinhood, Coinbase, or design-led crypto apps).
• Strong Swift and SwiftUI skills — modern concurrency (async/await, actors), state and navigation architecture, performance, and memory management.
• Proven track record of visually excellent, pixel-perfect apps; experience working closely with designers (Figma) and applying modern iOS design (Liquid Glass, SF Symbols, Dynamic Type).
• Experience integrating money-app SDKs and auth systems: passkeys/WebAuthn (ASAuthorization), embedded-wallet/auth infra (Privy, Dynamic/Turnkey/Magic), WalletConnect/Reown, KYC SDKs (SumSub, Onfido, Persona), account funding/aggregation (Mesh or Plaid-class), push/attribution (Firebase, AppsFlyer).
• Secure on-device handling: Keychain, biometric gating, and disciplined avoidance of token/PII leakage to logs or analytics.
• Comfortable owning and evolving a large existing iOS codebase and setting technical direction.
• Agent-native: experienced using coding agents (e.g., Claude Code), MCP servers, and reusable skills as force multipliers and able to explain where they do and don’t apply on iOS work.

Stack

Swift, SwiftUI, async/await, actors, Figma, Liquid Glass (iOS 26), ASAuthorization (WebAuthn/passkeys), Privy, Dynamic, Turnkey, Magic, WalletConnect, Reown, SumSub, Onfido, Persona, Mesh, Plaid-class, Firebase, AppsFlyer, Keychain, TestFlight/App Store

Skills

• Swift
• SwiftUI
• async/await
• actors
• Figma
• ASAuthorization
• WebAuthn
• passkeys
• Privy
• Dynamic
• Turnkey
• Magic
• WalletConnect
• Reown
• SumSub