macOS Systems & Security Engineer (Swift/Objective-C/C++)

Role overview

Design and evolve security-sensitive software that works close to the macOS operating system for identity, authentication, and endpoint protection. This principal-level individual contributor will shape technical direction while collaborating with engineering, security, product, and other technical partners on systems where reliability and security are critical.

Responsibilities - Build and maintain low-level macOS components and privileged services. - Develop authentication, identity, and endpoint security capabilities. - Use native macOS facilities such as XPC, Launch Agents and Daemons, Keychain, Authorization Services, and System Extensions. - Secure communication between application-level and system-level components. - Contribute to architecture and technical direction for security-focused software. - Work with partner teams to address system reliability, cryptography, and enterprise deployment needs.

Requirements - Principal-level engineering experience with strong macOS internals knowledge. - Systems programming experience with Swift, Objective-C, and/or C++. - Familiarity with native macOS security frameworks and privileged processes. - Strong software engineering fundamentals, including secure inter-process communication. - Ability to work through complex security and reliability problems with cross-functional teams. - English proficiency at B2/C1 level.

Benefits and work setup

Fully remote, full-time contractor role open across Latin America. The project focuses on cybersecurity, identity assurance, authentication, and enterprise endpoint security.