Agent Engineer- Rust Developer (mid to senior)
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Requirements
• Ability to develop high-quality, production-ready code in Rust. • Ability to work independently and take ownership of tasks from design through delivery. • Experience or familiar with Windows, Linux and/or macOS APIs • Windows • Knowledge and experience with the following Rust crates: threading, async, tokio. • Strong verbal and written communication skills. • Experience developing production systems in Python. • Experience with system-level programming and OS internals • Familiarity with SQL • Knowledge of additional languages (C++) • Knowledge of the Linux, macOS, or Windows kernel • Knowledge of endpoint security concepts and threat detection
Responsibilities
• Core Agent Platform Development: Design, build, and maintain scalable, cross-platform systems and services—primarily in Rust—that support endpoint tooling, secure bi-directional agent–cloud communication, and enterprise alerting capabilities. Contribute to components across their lifecycle, with a focus on implementation, reliability, and performance in real-world customer environments. Collaborate closely with backend and product teams to ensure seamless integration with Halcyon’s core services, while emphasizing security, efficiency, and operational quality. • Core Agent Platform Development: • Cross-Platform Code Contribution: Work with multi-platform logic in Rust while ensuring compatibility and optimal performance across different operating systems and architectures. • Cross-Platform Code Contribution: • Debugging & Optimization: Use logs, debuggers, and profiling tools to analyze performance, diagnose issues, and ensure correct behavior across all supported platforms. • Debugging & Optimization: • Test & Maintain Code Quality: Write unit and integration tests for your code, adhering to consistent coding style guidelines and overall product architecture. • Test & Maintain Code Quality: • Team Collaboration: Communicate effectively with other developers and teams to ensure the component integrates well within the overall product architecture and maintains interoperability across platforms. • Team Collaboration:
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 3% employer match • Short and long-term disability coverage, basic life and AD&D insurance plans. • Medical and dependent care FSA options. • Flexible PTO policy • 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: $150k-$185k, 10% bonus, and equity. • 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.
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