IOS SDK Developer

Job Title: Senior iOS Developer SDKs, Cryptography & Secure Communication

Location: Mumbai

Department: Research and Development

Experience Level: 5+ years

Employment Type: Full-Time

Job Summary

We are seeking a highly skilled Senior iOS Developer with deep expertise in SDK development, cryptography, secure communication, and modern iOS architectures. The ideal candidate will also bring hands-on experience with SwiftUI, alongside UIKit, to build scalable, secure, and high-performance mobile components and SDKs.

Key Responsibilities

• Design and develop modular, reusable SDKs that power secure and performant iOS applications.
• Architect solutions using MVVM, Clean Architecture, or VIPER that ensure scalability, testability, and maintainability.
• Implement secure communication channels (e.g., TLS, mutual TLS, SSL pinning) between apps and backend services.
• Build intuitive, dynamic UIs using SwiftUI and Combine, while maintaining legacy support with UIKit when necessary.
• Apply cryptographic techniques such as AES, RSA, HMAC, SHA-256, and ECDSA for data protection and message integrity.
• Utilize Keychain, Secure Enclave, and CryptoKit for secure storage and key management.
• Write robust unit, integration, and snapshot tests with XCTest, Quick/Nimble, or SnapshotTesting.
• Integrate and manage SDKs using Swift Package Manager, CocoaPods, or Carthage.
• Participate in code reviews, architectural discussions, and sprint planning in an agile team.

Required Skills and Qualifications

• 5+ years of professional iOS development experience with Swift and Objective-C.
• Proven track record in building and maintaining iOS SDKs or libraries used across apps or platforms.
• Strong command of SwiftUI, Combine, and interoperability with UIKit.
• Solid experience implementing MVVM, Clean Architecture, or modular iOS architecture patterns.
• Deep understanding of cryptographic principles, secure communication protocols, and mobile security practices.
• Proficiency in Git, Xcode, debugging tools, and Instruments.
• Experience with CI/CD pipelines, fastlane, and automated testing frameworks.
• Familiar with App Store guidelines, App Transport Security, and privacy standards like GDPR.
• Experience with Jailbreak detection, device attestation, or Play Integrity/DeviceCheck APIs.

Nice to Have

• Familiarity with WebSockets, gRPC, or secure messaging protocols (e.g., Signal Protocol).
• Prior work in domains like fintech, healthcare, or secure messaging.
• Contribution to open-source SDKs or libraries is a plus.