About the role

As an iOS Developer for a non-custodial wallet, you are responsible for building a secure, performant, and intuitive gateway to the blockchain. You will bridge the gap between complex Web3 protocols and the seamless mobile experience Apple users expect.

Job description

• Secure Key Management: Implement robust local storage solutions using Apple’s Secure Enclave and Keychain to ensure private keys and seed phrases never leave the device;
• On-Device Cryptography: Handle sensitive operations like transaction signing and mnemonic generation (BIP-39) entirely within the app environment. Work with iOS-specific cryptographic frameworks and libraries, including CommonCrypto, CryptoKit, and OpenSSL;
• Blockchain Integration: Connect the iOS frontend to blockchain networks via JSON-RPC providers (e.g., Infura, Alchemy) or specialized SDKs (e.g., Web3.swift, WalletConnect);
• Intuitive UX for High-Risk Actions: Design “guardrail” interfaces that prevent users from making irreversible mistakes, such as losing their recovery phrase or sending funds to an invalid address;
• Real-time Data Fetching: Manage complex asynchronous networking to track balances, token prices, and transaction histories across multiple chains;
• Cross-Language Boundaries: Debug and optimize interactions across Swift <> Objective-C <> C/C++ boundaries, including manual memory management, pointer handling, and threading considerations.

Qualifications

You have:

• 3+ years of production experience with SwiftUI (iOS 15+), with a solid understanding of Apple’s modern UI stack;
• 2+ years of hands-on production experience with Combine;
• Deep knowledge of Swift, including language features, memory management and performance considerations;
• Strong understanding of iOS concurrency models, including GCD and modern async patterns;
• Understanding of SOLID principles and common design patterns, with practical experience applying them in large-scale iOS applications;
• Experience writing unit tests, with a clear understanding of their purpose, scope, and value in long-term codebase maintenance;
• Confident usage of Swift Package Manager (SPM), including creating, integrating, and maintaining packages;
• Experience setting up and maintaining Fastlane pipelines for builds, signing, and releases;
• Hands-on experience configuring and maintaining CI/CD pipelines, preferably with GitLab CI, for iOS projects;
• Strong knowledge of Git and Gitflow;
• Experience working with large iOS projects involving multiple targets and schemes; understanding of white-label architectures.