# Software Sr Engineer

**Company:** [RSA](https://hotfix.jobs/companies/rsa)
**Location:** Remote
**Role:** Mobile Engineering
**Salary:** $100k – $140k/yr
**Experience:** 5+ years
**Skills:** Swift, objective-c, c/c++, SwiftUI, uikit, mvvm, clean architecture, cryptokit, keychain api, core data, REST APIs, app store connect
**Posted:** 2026-07-16

> 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.

## Job Description

## 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.

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