L2 Systems Analyst

Comfort Systems USA, Inc.; Dallas, Northern (TX, KY); Hybrid; USD 70,000 - 100,000; Full time

Job summary

Comfort Systems USA, Inc. is seeking a detail-oriented L2 Systems Analyst to join our IT Operations team in Dallas. The role provides second-level technical support, troubleshoots complex issues, and ensures stability, performance, and reliability of enterprise systems.

Responsibilities include incident escalation, root-cause analysis, on-call participation, and collaboration with security and infrastructure teams to implement improvements.

Qualifications

• 3–5 years of IT support or systems administration experience.
• Strong knowledge of Windows Server and Linux environments.
• Experience with Active Directory, DNS and DHCP.
• Microsoft 365 administration and virtualization basics.

Responsibilities

• Provide Level 2 technical support for enterprise systems 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).

Education

Bachelor’s degree in Information Technology, Computer Science, or related field

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).

Comfort Systems USA is composed of more than 45 operating companies in over 170 locations across the United States. We are a leading building and service provider for mechanical, electrical and plumbing building systems. We take great pride in knowing that the work we do can improve the lives of those around us. Our national footprint means that we have career opportunities across the USA, ranging from entry‑level field and office positions to experienced professionals who support a wide range of projects.