L2 Systems Analyst

Comfort Systems USA (Corporate); Northlake (TX); On-site; USD 70,000 - 90,000; Full time

Job summary

Comfort Systems USA (Corporate) is seeking an L2 Systems Analyst to provide second-level support, diagnose complex issues, and improve enterprise system reliability. You will work with IT Operations, security, and infrastructure teams to resolve incidents and implement improvements.

The role requires 3–5 years in IT support or systems administration, strong Windows/Linux, AD, and M365 knowledge, plus virtualization and basic networking. On-call rotation is part of the duties.

Qualifications

• Bachelor’s degree or equivalent experience in IT/CS.
• 3–5 years in IT support, systems administration, or related role.
• Experience with Windows Server and Linux environments.
• Active Directory, DNS, DHCP experience.
• Microsoft 365 administration.
• Virtualization technologies (VMware/Hyper-V).
• Basic networking concepts (TCP/IP, VPN, firewalls).
• ITIL-friendly ITSM processes and ticketing systems.
• Strong troubleshooting and analytical skills.
• Excellent written and verbal communication skills.

Responsibilities

• Provide Level 2 technical support for enterprise systems, apps, and infrastructure.
• Investigate, diagnose, and resolve escalated incidents from L1 support.
• Perform root cause analysis and document findings.
• Monitor system performance, availability, and capacity.
• Maintain Windows/Linux servers and cloud environments.
• Manage user access and identity services (Active Directory).
• Support patch management, upgrades, and change activities.
• Create and maintain runbooks and knowledge base articles.
• Participate in on-call rotation and incident response.
• Ensure IT policies and regulatory compliance.

Skills

Analytical thinking

Problem solving

Effective communication

Team collaboration

On-call experience

Documentation

Education

Bachelor’s degree in IT/CS or related field

ITIL Foundation certification

Microsoft/CompTIA/VMware certifications

Tools

Windows Server

Linux

Active Directory

DNS

DHCP

Microsoft 365

VMware/Hyper-V

TCP/IP/VPN/Firewalls

ITSM tools

Cloud platforms (Azure/AWS/GCP)

Job description

We are seeking a detail-oriented and proactive L2 Systems Analyst to join our IT Operations team. The L2 Systems Analyst will provide second-level technical support, troubleshoot complex system and application issues, and ensure stability, performance, and reliability of enterprise systems. This role acts as an escalation point for L1 support and works closely with infrastructure, application, and security teams to resolve incidents and implement system improvements.Key ResponsibilitiesProvide Level 2 technical support for enterprise systems, applications, and infrastructure.Investigate, diagnose, and resolve escalated incidents from L1 support.Perform root cause analysis and document findings.Monitor system performance, availability, and capacity.Maintain and support Windows/Linux servers and cloud environments.Manage user access, permissions, and identity services (e.g., Active Directory).Support patch management, system upgrades, and change management activities.Collaborate with vendors and third-party providers for issue resolution.Create and maintain technical documentation, runbooks, and knowledge base articles.Participate in on-call rotation and incident response when required.Ensure compliance with IT policies, security standards, and regulatory requirements.Required QualificationsBachelor’s degree in Information Technology, Computer Science, or related field (or equivalent experience).3–5 years of experience in IT support, systems administration, or related role.Strong knowledge of:Windows Server and/or Linux environmentsActive Directory, DNS, DHCPMicrosoft 365 administrationVirtualization technologies (VMware / Hyper-V)Basic networking concepts (TCP/IP, VPN, firewalls)Experience with ticketing systems and ITSM frameworks (ITIL preferred).Strong troubleshooting and analytical skills.Excellent written and verbal communication skills.Preferred QualificationsExperience with cloud platforms (Azure, AWS, or GCP).Familiarity with scripting (PowerShell, Bash).Experience with monitoring tools (e.g., SolarWinds, Nagios).ITIL Foundation certification.Relevant certifications (Microsoft, CompTIA, VMware).