Senior Security Systems Administrator Windows and Linux

Crowe México; Naucalpan de Juárez; Remote; MXN 600,000 - 900,000; Full time

Job summary

Crowe México is seeking a Senior Security Systems Administrator to lead Windows and Linux security tooling, agent deployment, and coverage across enterprise systems. You will work with infrastructure, cloud, and security teams to harden configurations and automate routines.

You should bring 5+ years in production systems administration, strong scripting skills, and practical experience with security platforms and vulnerability management. Remote role with competitive compensation.

Qualifications

• 5+ years of hands-on systems administration experience in Windows Server and Linux/Unix in production
• Strong troubleshooting across OS networks firewalls and proxies
• Experience with patching/configuration management tools (SCCM/Intune Ansible Satellite)
• Scripting in Python Bash or PowerShell; willingness to automate repetitive tasks
• Understanding of security tooling (EDR DLP PAM logs) and incident response
• Experience with cloud platforms (Azure AWS) and virtualization
• Exposure to REST APIs and data work in Python or SQL
• Interest in cybersecurity and security engineering
• Clear communication with cross-functional teams

Responsibilities

• Deploy upgrade and maintain security agents and sensors across Windows and Linux environments
• Monitor agent health and identify missing/outdated tools or reporting gaps
• Collaborate with infrastructure cloud and endpoint teams to cover security gaps from day one
• Maintain configuration standards policies and exclusions for security tools
• Support enterprise security deployment using automation and AI-assisted tooling

Skills

Windows Server

Linux/Unix

Troubleshooting

Scripting (Python/Bash/PowerShell)

Security tooling

Active Directory/Group Policy

Patching/Config mgmt tools

REST APIs

Cloud platforms (Azure/AWS)

Communication

Tools

SCCM/Intune

Ansible

CrowdStrike

Microsoft Defender

SentinelOne

Qualys/Tenable

CyberArk

Splunk

Job description

About usOur professional firm boasts over 70 years of experience and is ranked 5th nationally and 9th globally as part of Crowe Global, a network of over 769 offices in 129 countries worldwide. Our prestige, with 19 offices in Mexico, is built on experience, reputation, and the quality of our Audit, Tax, and Consulting solutions, among others. We provide the best advice so our clients can make smart decisions!Join our team as: Senior Security Systems Administrator- Windows & LinuxWhat are we looking for?We are looking for a senior systems administrator with hands- on experience managing Windows and Linux environments and administering enterprise security tools. The ideal candidate has strong troubleshooting and scripting skills, understands endpoint and server security, and can leverage automation and AI-assisted tools to improve security coverage across enterprise systems.Key ResponsabilitiesDeploy, upgrade, and maintain security agents and sensors (EDR, endpoint protection, DLP, vulnerability scanning, PAM, and log forwarders) across Windows and Linux servers and endpoints.Monitor agent health and coverage, and identify systems where required security tools are missing, outdated, disconnected, or not reporting.Work with infrastructure, cloud, and endpoint teams to resolve coverage gaps, and make sure new systems are built with the required security tooling from day one.Maintain configuration standards, policies, and exclusions for security tools in line with security requirements and operational stability.Requiered qualifications5+ years of hands-on systems administration experience supporting Windows Server and Linux/Unix systems in a production enterprise environment.Strong troubleshooting skills across operating systems, networking (DNS, TCP/IP, firewalls, proxies), certificates, and software distribution.Working knowledge of Active Directory and Group Policy, and of patching and configuration management tools (for example SCCM/Intune, Ansible, Satellite, or similar).Scripting experience in Python, Bash, or PowerShell, with a willingness to automate repetitive work (Python strongly preferred).Genuine interest in cybersecurity and in moving your career toward security engineering.Clear communication skills and the ability to work with infrastructure, application, and security teams to get problems resolved.Preferred QualificationsHands-on experience administering security tools such as EDR (CrowdStrike, Microsoft Defender, SentinelOne), vulnerability scanners (Qualys, Tenable), PAM (CyberArk), DLP, or SIEM (Splunk).Experience with cloud platforms (Azure, AWS) and virtualization.Experience with REST APIs and data work in Python or SQL.Exposure to LLM or AI-assisted automation, or strong interest in learning it.Experience in banking, financial services, or another regulated industry.Relevant certifications such as Security+, RHCSA/RHCE, Linux+, Azure Administrator, or Microsoft 365 Endpoint Administrator.What do we expect from you?We are looking for a proactive, detail-oriented professional with a security -first mindset and strong technical troubleshooting skills.What do we offer?Attractive and competitive salary, determined based on the candidate's experience and executive skills and benefitsRemote positionJob stability and an excellent corporate work environment.Growth opportunity and career plan continue within a top-tier global firm.If you meet all the requirements, please share your Resume with us in PDF or Word format.Together we will achieve great results!