L2 Systems Analyst

Comfort Systems USA; Houston (TX); On-site; USD 70,000 - 100,000; Full time

Job summary

Comfort Systems USA is hiring a detail-oriented L2 Systems Analyst to join the IT Operations team in Houston. You will provide second-level technical support, troubleshoot complex issues, and ensure stability and reliability of enterprise systems.

Responsibilities include on-call participation, root-cause analysis, and documentation. Requires a 3–5 year IT background with Windows/Linux, AD, DNS/DHCP, M365, virtualization, and basic networking knowledge.

Qualifications

• Bachelor's degree or equivalent IT experience.
• 3–5 years in IT support, systems administration, or related role.
• Strong knowledge of Windows Server, Linux, AD, DNS, DHCP, and M365.
• Experience with virtualization (VMware/Hyper-V) and basic networking.
• Familiarity with ITSM, ITIL, ticketing systems, and incident response.

Responsibilities

• Provide Level 2 support for enterprise systems and infrastructure.
• Troubleshoot escalated incidents from L1 and perform root cause analysis.
• Monitor performance, availability, and capacity of systems.
• Maintain Windows/Linux servers and cloud environments.
• Manage user access and identity services (Active Directory).
• Assist patching, upgrades, and change management activities.
• Collaborate with vendors for issue resolution.
• Create and maintain runbooks and knowledge base articles.
• Participate in on-call rotation and incident response.
• Ensure IT policy and security standards are followed.

Skills

Windows Server

Linux

Active Directory

DNS

DHCP

Microsoft 365

VMware

Hyper-V

TCP/IP

ITIL

Education

Bachelor's degree in Information Technology or Computer Science

Tools

SolarWinds

Nagios

PowerShell

Bash

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 Responsibilities

• Provide 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 Qualifications

• Bachelor'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 environments

  • Active Directory, DNS, DHCP

  • Microsoft 365 administration

  • Virtualization 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 Qualifications

• Experience 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).