Senior macOS Developer

About the Role:

• macOS SDK Development:

  Contribute to the design, implementation, and enhancement of the macOS security SDK, focusing on real-time malware scanning, quarantine mechanisms, system extensions, and advanced security functionality.

• System-Level Programming & Integration:

  • Leverage macOS-specific technologies such as Endpoint Security Framework, System Extensions, XPC services, and launchd for efficient system integration.
  • Develop robust, performant components for real-time protection, threat detection, quarantine handling, and network filtering.

• Security and Compliance:

  • Implement security best practices, including secure coding standards, robust error handling, and protection against malicious tampering or exploitation.
  • Ensure the SDK adheres to Apple s security guidelines, including compatibility with System Integrity Protection (SIP) and Gatekeeper requirements.

• P

  erformance Optimization:

  • Profile and optimize performance for minimal CPU usage, memory footprint, and low-latency operations.
  • Ensure our macOS SDK exceeds current benchmarks established by market-leading solutions.

• Documentation and Developer Experience:

  • Author clear, comprehensive documentation that supports internal and external developers integrating the macOS SDK.
  • Create sample applications and code examples that demonstrate best practices and facilitate easy adoption.

• Cross-Functional Collaboration:

  • Work closely with product, QA, and security teams to define requirements and ensure seamless integration across different modules and platforms.
  • Participate actively in architecture and design reviews, contributing macOS-specific insights and guidance

What you bring to the table:

• At least 5 years

  of extensive experience developing software for macOS, particularly at the system or kernel-extension level.

• Expert knowledge

  of

  Objective-C

  ,

  Swift

  , and

  low-level C/C++ programming

  .
• Hands-on experience with

  macOS frameworks

  such as

  Endpoint Security Framework

  ,

  XPC services

  ,

  launchd

  , and

  System Extensions

  .
• Proven experience with macOS security mechanisms, including System Integrity Protection (SIP), notarization, entitlements, and sandboxing.
• Solid understanding of multithreading, concurrency, memory management, and performance optimization.
• Strong problem-solving and debugging skills with experience using Xcode Instruments, LLDB, or similar tools.
• Excellent communication skills and ability to clearly articulate technical details to both developers and non-technical stakeholders
  

Preferred Qualifications:

• Familiarity with

  Endpoint Security Framework

  (ESF) and associated APIs for real-time system monitoring.
• Experience with

  network-level programming

  on macOS, including

  Network Extensions.

• Experience in developing or integrating antivirus, network security, VPN, or other endpoint security products.
• Knowledge of security industry practices, including threat detection techniques, quarantine/remediation processes, and secure coding principles.

What We Offer:

• Impactful Role:

  Directly influence a critical security platform, shaping how millions of users interact securely with their devices.

• Innovative Environment:

  Work within a dynamic, highly collaborative team where your technical expertise is valued and your contributions have high visibility.

• Professional Growth:

  Opportunities for leadership, career growth, and continued learning in advanced security technologies.