IT Specialist

Thomas Global; Irvine (CA); On-site; USD 85,000 - 95,000; Full time

Benefits offered by this job

Competitive remuneration

Comprehensive benefits package

Aerospace/defense environment

Job summary

Thomas Global Systems in Irvine, California is seeking an IT Specialist to manage, secure, and support the company’s IT infrastructure for on‑site and remote users. You will administer Windows/Linux servers, AD/Entra ID, DNS/DHCP, cloud services, and core business applications while ensuring cybersecurity, patching, backups, and incident response are effective.

The role offers a competitive salary with benefits in a mission‑critical aerospace and defense environment, with vendor management and

Qualifications

• At least five years of hands‑on experience across IT infrastructure, networking, cybersecurity, and user support.
• Strong experience with firewalls, routing, switching, VPNs, VLANs, Wi‑Fi and network troubleshooting.
• Experience with Windows Server, Active Directory/Entra ID, Linux, virtualization and cloud services.
• Practical experience with endpoint security, MFA, patching, monitoring, backup, and recovery.
• Experience managing onboarding/offboarding, software licensing, IT assets and equipment deployment.
• Experience managing third‑party IT providers and service agreements.
• Strong troubleshooting, organizational, and communication skills, with the ability to work independently.
• Relevant certifications such as Security+, Network+, CCNA/CCNP, CISSP or CISM, preferred.

Responsibilities

• Manage and improve network infrastructure, including switches, routers, Wi‑Fi, VPNs, VLANs, and firewalls.
• Administer Windows/Linux servers, Active Directory/Entra ID, DNS, DHCP, virtualization platforms, cloud services and core business applications.
• Manage technology deployment, software licensing, equipment replacement, and IT purchasing.
• Provide day‑to‑day IT support for employees and contractors across office, remote and off‑site environments.
• Manage onboarding, access changes and offboarding, including equipment, accounts, permissions, and company data.
• Provide practical user guidance and security awareness support.
• Maintain endpoint, email, web and identity security controls, including MFA and appropriate access protections.
• Monitor systems, logs and alerts; manage vulnerabilities, patching, configuration standards, and incident response.
• Maintain backup and recovery processes, test restoration capability, and support business continuity planning.
• Evaluate and manage IT providers, service agreements, renewals, escalations and vendor performance.
• Maintain IT asset records, network diagrams, procedures, and other key system documentation.
• Support cybersecurity and compliance requirements, including CMMC/NIST controls and assessment activities.
• Provide regular management reporting and recommend improvements to IT reliability, security, efficiency, and user experience.

Job description

Join Our Team as an IT Specialist!

About the Company:

Thomas Global Systems is a leader in the design, manufacture and support of high-integrity aviation and defense electronics, operating out of locations in Sydney, Australia and Irvine, California.

About the Role:

The IT Specialist manages, maintains, and secures the company’s IT infrastructure while providing reliable day-to-day technology support across the business. The role combines hands-on network and systems administration, cybersecurity, troubleshooting, and IT service management. This position is responsible for setting up and managing IT onboarding and ongoing support for all employees and contractors, including full-time staff and personnel working remotely or off-site. The IT Specialist also evaluates and manages third-party providers and provides regular reporting on IT usage, performance, and improvements.

Location: Irvine, CA, fully onsite.

What's on Offer:

• A varied, fast paced role with an innovative and respected leader in mission-critical aerospace and defense products.
• Competitive remuneration and comprehensive benefit package.
• Join a team of skilled and motivated people committed to innovation, collaboration, and national security outcomes.

Key Responsibilities:

IT Infrastructure & Systems

• Manage and improve network infrastructure, including switches, routers, Wi‑Fi, VPNs, VLANs, and firewalls.
• Administer Windows/Linux servers, Active Directory/Entra ID, DNS, DHCP, virtualization platforms, cloud services and core business applications.
• Manage technology deployment, software licensing, equipment replacement, and IT purchasing.

User Support & Lifecycle

• Provide day‑to‑day IT support for employees and contractors across office, remote and off‑site environments.
• Manage onboarding, access changes and offboarding, including equipment, accounts, permissions, and company data.
• Provide practical user guidance and security awareness support.

Cybersecurity & Resilience

• Maintain endpoint, email, web and identity security controls, including MFA and appropriate access protections.
• Monitor systems, logs and alerts; manage vulnerabilities, patching, configuration standards, and incident response.
• Maintain backup and recovery processes, test restoration capability, and support business continuity planning.

Vendors, Compliance & Improvement

• Evaluate and manage IT providers, service agreements, renewals, escalations and vendor performance.
• Maintain IT asset records, network diagrams, procedures, and other key system documentation.
• Support applicable cybersecurity and compliance requirements, including CMMC/NIST controls and assessment activities.
• Provide regular management reporting and recommend improvements to IT reliability, security, efficiency, and user experience.

Required Skills, Experience and Behaviors:

• At least five years of hands‑on experience across IT infrastructure, networking, cybersecurity, and user support.
• Strong experience with firewalls, routing, switching, VPNs, VLANs, Wi‑Fi and network troubleshooting.
• Experience with Windows Server, Active Directory/Entra ID, Linux, virtualization and cloud services.
• Practical experience with endpoint security, MFA, patching, monitoring, backup, and recovery.
• Experience supporting users, managing onboarding/offboarding, software licensing, IT assets, and equipment deployment.
• Experience managing third‑party IT providers and service agreements.
• Strong troubleshooting, organizational, and communication skills, with the ability to work independently across the business.
• Relevant certifications such as Security+, Network+, CCNA/CCNP, CISSP or CISM, and experience in aerospace, defiance, manufacturing or another regulated environment, are preferred.

Base salary range of $85,000 - $95,000 DOE per annum. The final salary offer will be determined after reviewing relevant factors, including but not limited to location, skill set; relevant experience; and other business and organizational needs.

At‑Will Employment Statement

Thomas Global Systems is an at‑will employer. Employment with the company is voluntary and may be terminated by the employee or the company at any time, with or without cause or notice, and for any reason or no reason at all.

Equal Employment Opportunity (EEO) Statement

Thomas Global Systems is an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants and do not discriminate based on race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, or any other protected status under applicable laws.

Americans with Disabilities Act (ADA) Accommodation Statement

If you are an individual with a disability and require a reasonable accommodation to complete any part of the application process or to perform the essential functions of a position, please contact us at [e-mail].