Job Description
Job DescriptionSenior Systems Administrator
Hybrid
Position Description
The Senior Systems Administrator is a hands-on infrastructure professional responsible for maintaining and improving the organization's core IT environment across on-premises and cloud platforms. This role sits between frontline Service Desk support and advanced Engineering/SecOps functions, serving as the primary escalation point for complex technical issues while also driving infrastructure stability, systems administration, user access management, and operational improvement initiatives.
The ideal candidate is a versatile IT generalist who can troubleshoot end-user and application issues, administer enterprise infrastructure, support network operations, manage cloud and identity platforms, and help modernize legacy environments. This individual must be comfortable rolling up their sleeves to solve day-to-day problems while also contributing to infrastructure projects, documentation, process improvements, and long-term technology initiatives.
Duties & Responsibilities
- Serve as the primary escalation point for Service Desk incidents involving systems, applications, infrastructure, networking, and user access issues.
- Administer and support Active Directory, Microsoft 365, Azure AD/Entra ID, user provisioning, group policies, and identity management.
- Manage on-premises and cloud-based systems, ensuring availability, performance, and security.
- Support server administration, enterprise applications, file services, storage systems, and endpoint management platforms.
- Troubleshoot and resolve issues related to networking, authentication, connectivity, VPNs, wireless infrastructure, printers, and endpoint hardware.
- Assist with network administration, including switches, firewalls, wireless access points, routing, and connectivity troubleshooting.
- Monitor infrastructure health, identify recurring problems, and implement corrective actions to improve reliability and user experience.
- Support onboarding and offboarding activities, including account creation, access management, hardware deployment, and system configuration.
- Maintain accurate system documentation, asset inventories, knowledge base articles, diagrams, and operational procedures.
- Assist with cloud migration initiatives, infrastructure upgrades, application modernization efforts, and technology integration projects.
- Support security and compliance initiatives by reviewing user access, assisting with audits, remediating vulnerabilities, and following security best practices.
- Work closely with development, infrastructure, security, and business teams to resolve technical issues and improve operational effectiveness.
- Provide hands-on support for both modern and legacy business applications, identifying opportunities to reduce technical debt and improve supportability.
- Participate in after-hours support, maintenance activities, and on-call rotations as required.
- Contribute to technology planning, process improvement, and infrastructure standardization efforts.
Education & Experience
- 5+ years of experience in Systems Administration, Infrastructure Support, IT Operations, or related technical roles.
- Strong experience supporting Microsoft-based environments, including Active Directory, Microsoft 365, Azure AD/Entra ID, and Windows Server.
- Experience administering hybrid environments consisting of on-premises and cloud infrastructure.
- Working knowledge of networking fundamentals including TCP/IP, DNS, DHCP, VLANs, switching, routing, wireless networking, and VPN technologies.
- Experience with user provisioning, access management, endpoint management, and enterprise application support.
- Ability to troubleshoot complex technical issues across systems, applications, networks, and hardware.
- Experience supporting both Windows and macOS environments.
- Familiarity with infrastructure projects, system migrations, upgrades, and technology rollouts.
- Strong documentation, communication, customer service, and problem-solving skills.
- Ability to work independently in fast-paced environments that require balancing tactical support with strategic improvements.
Preferred Qualifications
- Experience supporting legacy business applications, databases, or internally developed platforms.
- Exposure to AWS, Azure, or hybrid cloud environments.
- Experience with security tools, vulnerability remediation, access reviews, or compliance initiatives.
- Familiarity with scripting or automation using PowerShell, Python, or similar technologies.
- Certifications such as Microsoft Certified, Azure Administrator, Network+, Security+, or comparable credentials.
- Previous experience working in lean IT teams where individuals supported infrastructure, systems, networking, and user support responsibilities.
Tech Stack
Microsoft 365, Active Directory, Azure AD / Entra ID, Windows Server, AWS Cloud, Azure Cloud, TCP/IP, DNS, DHCP, VLANs, VPN, Wireless Networking, Routing & Switching, Firewalls, Access Control Lists (ACLs), Microsoft Access Databases, Legacy Enterprise Applications, Microsoft Windows, macOS, SIEM Monitoring Tools, Vulnerability Management Tools, Asset Management Platforms, SmartDeploy, Asset Sonar, LogMeIn Rescue, Splashtop, PowerShell, Python, Ticketing Systems, Endpoint Management Tools, Network Monitoring Tools, Identity & Access Management Solutions.
Pay Details: $50.00 to $80.00 per hour
Search managed by: Joseph Burley
Benefit offerings available for our associates include medical, dental, vision, life insurance, short-term disability, additional voluntary benefits, EAP program, commuter benefits and a 401K plan. Our benefit offerings provide employees the flexibility to choose the type of coverage that meets their individual needs. In addition, our associates may be eligible for paid leave including Paid Sick Leave or any other paid leave required by Federal, State, or local law, as well as Holiday pay where applicable.
Equal Opportunity Employer/Veterans/Disabled
Military connected talent encouraged to apply
To read our Candidate Privacy Information Statement, which explains how we will use your information, please navigate to https://www.lhh.com/us/en/candidate-privacy
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
- San Francisco Fair Chance Ordinance
Massachusetts Candidates Only: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.