Senior Cross-Platform Endpoint Security Engineer

Rustify; Northern (KY); Hybrid; USD 150,000 - 250,000; Full time

Job summary

Rustify is seeking an Senior Endpoint Engineer to lead the development of a cross-platform security agent for Windows, Linux, and macOS. You will architect a lightweight, resilient client with deep OS introspection, offline telemetry spooling, and advanced threat prevention.

Expertise in Rust, Windows internals, and low-overhead heuristics is essential. The role demands building a self-healing agent lifecycle, secure communications, and distributed system design to ensure reliable protection and

Qualifications

• 5+ years of systems-level programming and architecting highly concurrent applications.
• Strong Rust programming skills for high-performance, low-level OS integrations.
• Deep understanding of Windows OS internals including ETW, IPC, Named Pipes, and Windows Services.
• Experience with cross-platform endpoint telemetry collection utilizing Linux eBPF and macOS ESF.
• Proven experience in dynamic binary instrumentation, user-mode API interception, and process injection.
• Experience in designing low-overhead threat detection heuristics on endpoints.
• Knowledge of Windows kernel-mode components and File Filter Drivers for data-in-motion tracking.
• Experience with offline disk spooling and secure mTLS synchronization in distributed systems.
• Understanding of anti-tampering mechanisms and process protection.
• Experience building reliable agent lifecycles and self-healing architectures.

Responsibilities

• Lead development of a core endpoint security agent for Windows, Linux, and macOS.
• Architect a lightweight, high-performance agent with OS introspection and offline telemetry spool.
• Implement user-mode hooking, kernel-level analysis, and anti-tampering features.
• Design and optimize distributed systems with secure mTLS synchronization.
• Collaborate on threat detection heuristics with minimal performance impact.

Skills

Rust

Systems-level programming

Concurrency

Windows internals

Telemetry collection

Dynamic binary instrumentation

User-mode API interception

Process injection

Threat detection heuristics

Anti-tampering concepts

Self-healing architectures

Distributed systems

File & data security

Tools

Linux eBPF

macOS ESF

Browser extension development

Job description

Rustify is seeking an Senior Endpoint Engineer to lead the development of a cross-platform security agent for Windows, Linux, and macOS. You will architect a lightweight, resilient client with deep OS introspection, offline telemetry spooling, and advanced threat prevention.

Expertise in Rust, Windows internals, and low-overhead heuristics is essential. The role demands building a self-healing agent lifecycle, secure communications, and distributed system design to ensure reliable protection and