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Job Description: Sr. Rust Engineer
United States · 5 hours ago · 48 applicants
Promoted by hirer · Company review time is typically 1 week


$160K/yr - $200K/yr

 Remote
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Full-time

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Sr. Rust Engineer
Graystone Group · United States (Remote)

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Meet the hiring team

John Gray IV  
 3rd
Founder & CEO @ Graystone Group | Passionate Creator, Connector & Culture-builder | Loving Husband, Father and Dog Dad 
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About the job
Graystone Group is supporting a leading Identity & Access Management (IAM) product company in hiring a Senior Endpoint Agent Developer to build secure, cross-platform authentication agents for Windows, macOS, and Linux.


Role Overview

You will design and develop systems-level endpoint agents in Rust, integrate deeply with OS authentication frameworks, and support identity, certificate, and Zero Trust workflows across diverse environments. This is a high-impact architecture + development role owning major components of the endpoint platform.


Key Responsibilities

Build cross-platform authentication agents in Rust for Windows/macOS/Linux.
Implement OS-level auth integrations (Credential Providers, PAM modules, macOS Authorization Plugins).
Support PKI, certificate lifecycle workflows, machine identity issuance, and secure key storage.
Develop plugin architectures, dynamic library loading, IPC systems, and background services.
Enable SSO/OIDC/SAML integration, ZTNA features, and agent update/deployment mechanisms.
Integrate with containerized environments (Docker, Kubernetes).
Drive endpoint telemetry, system inventory, and performance optimization.


Required Expertise

Expert Rust and systems-level programming.
Deep cross-platform OS knowledge and authentication mechanisms.
Experience with PKI, credential workflows, certificate stores, and secure key storage (TPM, Secure Enclave, Keychain/Keystore).
FFI expertise (C/C++/Go) and plugin/dynamic library development (.dll/.dylib/.so).
IAM/ICAM, Zero Trust, SSO/OIDC/SAML experience.
Strong understanding of secure, always-on agent design.


Platform Knowledge

Windows: Credential Provider API, Registry, Certificate Store
macOS: Authorization Plugins, Keychain Services
Linux: PAM, D-Bus, systemd


Bonus Skills

AI coding assistant proficiency (Copilot, ChatGPT, Claude).
Telemetry collection, IPC security, background service optimization.
Third-party SDK/API integration.