Onsite IT Support Representative II - Temp-To-Hire

About Us

We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation for combining high-quality consulting services with customized energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities with design assistance, as well as engineering applications and automated control systems.

Job Summary

Mesa Energy Systems is seeking an IT Support Representative II to provide intermediate technical support for approximately 1,700 employees across 22 branches in four states. This role supports end users with hardware, software, account access, network connectivity, and standard IT service issues while helping maintain reliable day-to-day IT operations. The position works with moderate independence to troubleshoot and resolve routine to moderately complex issues, escalate advanced matters as needed, document support activity, assist with deployments and onboarding support, and contribute to consistent, responsive service delivery across the organization.

Essential Duties & Responsibilities

• Provide Help Desk support by phone, walk-up, email, and ticketing system for end-user hardware, software, account, connectivity, and standard IT service issues.

• Troubleshoot, diagnose, resolve, monitor, and test routine to moderately complex technical issues, escalating advanced or widespread issues as needed.

• Install, configure, maintain, and support desktops, laptops, mobile devices, printers, peripherals, hardware components, and proprietary or commercial applications.

• Assist with daily IT operations, including support calls, laptop deployments, equipment setups, rapid response needs, and occasional off-hours or offsite support.

• Provide basic IT training for new employees and serve as a first point of contact for new employee technology questions.

• Maintain user information in Active Directory, Azure AD, update inventory records, and document support requests, resolutions, configuration settings, and knowledge base content.

• Follow established IT procedures, standards, security controls, compliance requirements, and asset management practices.

• Identify recurring issues, suggest process or deployment improvements, and assist with larger assigned projects and technology initiatives.

Qualifications

• Bachelor’s degree in computer science, Information Technology, or relevant certifications.

• 3+ years of experience in IT systems support, implementation, and maintenance; 2 considered with degree.

• Experience with Windows 11, O365, Global Protect, PrinterLogic, Cortex, Tanium, and/or Verkada preferred.

• Familiarity with Ethernet and network Communications equipment and ability to troubleshoot TCP/IP, DHCP and DNS issues.

• Knowledge of networking, servers, and databases

• Experience with cybersecurity best practices, including firewalls, intrusion detection, and data encryption.

• Excellent problem-solving, analytical, communicative, and collaborative skills required.

#Mesa #LI-Mesa #LI-HVACjobs #LI-Onsite

Equal Opportunity Employer

As a leading provider of mechanical and electrical construction, facilities services, and energy infrastructure, we offer employees a competitive salary and benefits package and we are always looking for individuals with the talent and skills required to contribute to our continued growth and success. Equal Opportunity Employer/Veterans/Disabled

Affirmative Action Policy

Please review ourAffirmative Action Policy (https://emcorgroup.icims.com/icims2/servlet/icims2?module=AppInert&action=download&id=125196&hashed=-2134526997) .

Notice to Prospective Employees

Notice to prospective employees: There have been fraudulent postings and emails regarding job openings. EMCOR Group and its companieslist open positions here (https://careers-emcorgroup.icims.com/) . Please check our available positions to confirm that a post or email is genuine.

EMCOR Group and its companies do not reach out to individuals to help with marketing or other similar services. If an individual is contacted for services outside of EMCOR’s normal application process – it is probably fraudulent.

Geographic Disclosure

Compensation Range: $32 - $36 per hour

Benefits: We are committed to providing employees a comprehensive benefits package which includes medical, dental, and vision coverage, along with health savings and flexible spending accounts, life insurance, disability, a 401(k) Savings Plan, College Coach and employee assistance program.

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Job Locations US-CA-Irvine

ID 2026-51413

Company Mesa Energy Systems, Inc.

Category Information Technology

Position Type Full-Time

Location Type Onsite

Posted Date (7/22/2026 7:03 PM)