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RSARSAUnited States

Software Sr Engineer

Senior iOS Engineer building secure, native mobile authentication and identity solutions using Swift and security frameworks. Requires 5+ years software engineering experience including 3+ years iOS development, with strong cryptography and secure networking knowledge preferred.

100k – 140k/yr
Remote5+ YOEMobile Engineering

About the role

Principal Responsibilities

  • Work on products that matter as a Senior iOS Engineer, building elegant solutions to complex problems in a security-minded environment.
  • Collaborate with experienced engineers and security experts, taking ownership of deep technical challenges.
  • Focus on technical excellence, curiosity, ownership, and creative thinking in a flexible, entrepreneurial setting.

Skills

  • Mastery of Swift, Objective-C, and C/C++.
  • Strong expertise in SwiftUI, UIKit, and Storyboards for intuitive UI/UX while adhering to enterprise security constraints.
  • Experience with architectural patterns such as MVVM or Clean Architecture, plus asynchronous and concurrency concepts.
  • Strong analytical skills, out-of-the-box thinking, builder mindset, independent work, and clear communication.

Preferred Qualifications

  • Hands-on experience with Apple Security framework, CryptoKit, and Keychain API.
  • Understanding of cryptographic principles (AES, RSA, ECC, hashing).
  • Experience with Core Data.
  • Deep understanding of secure networking, REST APIs, and mitigating MITM attacks.
  • Experience with App Store Connect, enterprise provisioning profiles (MDM/MAM a plus), and secure release pipelines.
  • Experience with automated security scanning tools in CI/CD pipelines.
  • Background in cybersecurity, identity, fraud prevention, device security or related domains.
  • Knowledge of performance optimization and hardening mobile apps.

Education & Experience

  • 5+ years of professional software engineering experience, with 3+ years dedicated to native iOS development.

Skills

Swiftobjective-cc/c++SwiftUIuikitmvvmclean architecturecryptokitkeychain apicore dataREST APIsapp store connect

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