Senior Technical Support Engineer

LHH; Irvine (CA); On-site; USD 80,000 - 120,000; Full time

Job summary

A leading technology staffing firm is seeking a Sr. IT Support Engineer in Irvine. The ideal candidate will have over 5 years of IT support experience in a managed services environment and strong technical skills in areas such as firewall administration and Microsoft 365. This hands-on role is crucial for managing complex escalations while working across multiple client environments. The candidate must be comfortable working onsite five days a week.

Qualifications

• 5+ years of experience in IT support or service desk environments.
• Prior experience in a Managed Services Provider (MSP) environment strongly preferred.
• Advanced knowledge in firewall administration and network troubleshooting.

Responsibilities

• Designing and delivering infrastructure, cloud, and security solutions.
• Serving as a senior escalation resource for complex technical issues.
• Supporting Microsoft 365, Azure/Entra ID, and networking.

Skills

IT support experience

Firewall administration

Network design

Customer service

Communication skills

Tools

ServiceNow

ConnectWise

Jira Service Management

Job description

LHH is currently partnering with a company in Irvine to help them find their next Sr. IT Support Engineer. This role will play a key role in a growing managed services environment. This is a hands-on, high-impact position for someone who enjoys balancing project-based work with advanced troubleshooting and client-facing support. You’ll work across multiple client environments, owning everything from infrastructure improvements and cloud initiatives to complex escalations and technical guidance for the broader team. Candidates must be ok working onsite 5 days a week!

Key Responsibilities

• Designing and delivering infrastructure, cloud, and security solutions across diverse client environments
• Serving as a senior escalation resource and resolving complex technical issues end to end
• Supporting Microsoft 365, Azure/Entra ID, networking, backups, and security tooling
• Function as the Tier 2/3 escalation resource across all managed client environments
• Partnering directly with client stakeholders during high-priority or sensitive situations
• Mentoring junior engineers and helping raise the technical bar across the team
• Creating and maintaining clear standards and documentation to ensure consistency and quality

Required Qualifications

• 5+ years of experience in IT support or service desk environments
• Prior experience in a Managed Services Provider (MSP) environment strongly preferred
• Advanced knowledge in firewall administration, network design, and troubleshooting
• Experience with ITSM platforms (e.g., ServiceNow, ConnectWise, Jira Service Management)
• Strong working knowledge across Microsoft 365, Active Directory/Entra ID, endpoint management, NOC, networking fundamentals
• Demonstrated ability to manage multiple priorities across diverse client environments
• Excellent communication, leadership, and customer service skills
• CompTIA certifications are highly preferred

Disclaimer: This is not a C2C/C2H opportunity and only accepting candidates within the US or authorized to work/not needing sponsorship now or in the future.

Equal Opportunity Employer/Veterans/Disabled

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The Company will consider qualified applicants with arrest and conviction records in accordance with federal, state, and local laws and/or security clearance requirements, including, as applicable:

• The California Fair Chance Act
• Los Angeles City Fair Chance Ordinance
• Los Angeles County Fair Chance Ordinance for Employers