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macOS Agent Engineer at Halcyon, Remote (Global)

Halcyon’s goal is to deliver an anti-ransomware solution that breaks new ground in what a security product can achieve. Aligned with this vision, we are seeking an experienced engineer to contribute to the development of our macOS agent. This agent combines macOS extensions with a user-level service written in Rust, C++, and Swift. By expanding platform support, we are ensuring our customers are further protected from ransomware threats. If you’re passionate about macOS security and want to make a real difference, we’d love to hear from you.

Responsibilities:

• Develop macOS-specific Security Extensions: Using Network Extensions and the Endpoint Security Framework.
• Design Agent Functionality for macOS: Handle packaging, installation, secure updates, and system integration for endpoint agents.
• Cross-Platform Code Contribution: Work with multi-platform logic in Rust for a user-level service alongside macOS-specific code.
• Debugging & Optimization: Use logs, debuggers, and profiling tools to analyze performance and correct behavior.
• Test & Maintain Code Quality: Write unit and integration tests, adhering to consistent coding style and architecture.
• Team Collaboration: Communicate effectively across teams to ensure interoperability with other components and alignment with architectural goals.

Skills and Qualifications:

• Ability to develop high-quality code in Swift and C++
• Experience with macOS extensions in an endpoint security product (e.g., EndpointSecurity, Network Extensions)
• Experience developing and shipping production software for macOS
• Familiarity with SQL

Bonus Skills and Qualifications:

• Experience developing in Rust and handling interoperability between Rust and Swift

• Experience distributing macOS applications using .pkg and .dmg

• Knowledge and experience with Rust crates such as threading, async, and Tokio

• Experience working with SQL

Benefits:

Halcyon offers the following benefits to eligible employees:

• Comprehensive healthcare (medical, dental, and vision) with premiums paid in full for employees and dependents.
• 401k plan with a generous employer contribution.
• Short and long-term disability coverage, basic life and AD&D insurance plans.
• Medical and dependent care FSA options.
• Flexible PTO policy.
• Parental leave.
• Generous equity offering.

The Company reserves the right to modify or change these benefits programs at any time, with or without notice.​

Base Salary Range: $180,000 – $240,000

Bonus Range: 10%

In accordance with applicable state and federal laws, the range provided is Halcyon’s reasonable estimate of the base compensation for this role. The actual amount may differ based on non-discriminatory factors such as experience, knowledge, skills, abilities, and location. Base pay is one part of the total package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and equity in the Company.