Senior Linux Security Lead: Red Team & Hardening

Theron Partners Inc.; New York (NY); Hybrid; USD 150,000 - 210,000; Full time

Job summary

Theron Partners Inc. in the United States is seeking a Linux Security Lead to strengthen security across enterprise Linux infrastructure for a global investment organization.

This role blends Linux security engineering with hands-on offensive security, including adversary simulation, exploitation, attack-path analysis, and hardening. You will lead assessments, design hardening, identify weaknesses, build automated checks, and collaborate with infra and security teams to deploy secure Linux

Qualifications

• 5+ years of hands-on enterprise Linux security/engineering experience.
• Strong Red Team / Offensive Security background with exploitation and adversary simulation.
• Deep knowledge of Linux hardening, privilege management, authentication, access controls, and secure configuration.

Responsibilities

• Lead security assessments and red-team activities against enterprise Linux environments
• Design and improve Linux hardening standards, secure configurations, and least-privilege controls
• Identify attack paths, privilege-escalation opportunities, and system weaknesses
• Build automated security checks and remediation workflows using scripting/automation
• Support threat investigations across Linux systems, logs, processes, and network activity
• Partner with infrastructure, engineering, and security teams on secure Linux deployments across on-prem and cloud environments

Skills

Linux security

Red Team / Offensive Security

Secure configurations / least-privileg

Attack-path analysis

Threat modeling

Tools

Python

Bash

PowerShell

Job description

Theron Partners Inc. in the United States is seeking a Linux Security Lead to strengthen security across enterprise Linux infrastructure for a global investment organization.

This role blends Linux security engineering with hands-on offensive security, including adversary simulation, exploitation, attack-path analysis, and hardening. You will lead assessments, design hardening, identify weaknesses, build automated checks, and collaborate with infra and security teams to deploy secure Linux