Windows / Linux System Administrator

Maximus • Annapolis Junction, MD

1d • $90,000 - $100,000 • Onsite

About The Position

Maximus is seeking a Windows / Linux System Administrator to manage and support internal-use telephony systems for a Homeland Security customer. The role provides technical leadership for configuring, maintaining, and troubleshooting enterprise telephony infrastructure across operating systems, networking, security, and application support. The position is on-site and requires an active Secret clearance. Candidates must be U.S. citizens and live within commuting distance for daily on-site work and on-call requirements. The supported systems require 24x7x365 uptime, including participation in a rotational on-call schedule and meeting recall requirements.

Requirements

• Active Secret security clearance.
• U.S. citizenship, due to contract requirements.
• At least 7 years of relevant experience in systems administration or systems engineering.
• Experience with Windows and Linux Server environments, including installation, patching, and troubleshooting.
• Experience with telephony platforms, including Avaya and call recording or workforce management applications.
• Experience with VMware environments, including ESXi and vCenter, for installation, upgrades, troubleshooting, and ESXi certificate management.
• Networking experience with IPv4/IPv6, ports and protocols, and monitoring.
• Familiarity with remediation and validation of security vulnerabilities in Windows and Linux Server environments.
• Proficiency in managing and monitoring infrastructure, including telephony peripherals and server systems.
• Knowledge of client/server certificate management.
• Experience with Active Directory and Group Policy administration.
• Ability to reside within commuting distance for daily on-site work and on-call requirements.
• Willingness and ability to meet recall requirements and participate in a rotational on-call schedule for systems requiring 24x7x365 uptime.
• Ability to move throughout an office environment and occasionally lift and carry up to 50 pounds.

Nice To Haves

• Prior DHS suitability.
• Scripting experience with PowerShell or Shell scripting.
• Experience with virtualization technologies such as VMware.
• Experience with Microsoft SQL Server and PostgreSQL databases.
• Demonstrated experience with Active Directory and Group Policy administration.
• Experience with security vulnerability remediation and validation.

Responsibilities

• Manage and support enterprise telephony systems, including hardware, software, peripherals, and call applications such as WFO/WFM, CMS, and call recording platforms.
• Install, configure, operate, monitor, and maintain enterprise infrastructure, including IIS web servers, application servers, and telecommunications hardware such as Dell PowerEdge servers and Anaya J Series phones.
• Install, configure, troubleshoot, and resolve issues involving telephony systems, Windows and Linux servers, network connectivity, and integrations with Active Directory, DNS, DHCP, and LDAP.
• Collaborate with cross-functional teams to implement telephony solutions that support high availability, call quality, and security and performance standards.
• Apply regular and emergency patches to Windows and Linux Server environments to maintain security and compliance.
• Plan, test, and execute system upgrades and migrations.
• Conduct regular system health checks and preventive maintenance.
• Coordinate with security teams to address audit findings and implement remediations.
• Perform other tasks as assigned.

Benefits

• Health insurance coverage.
• Life and disability insurance.
• Retirement savings plan.
• Paid holidays.
• Paid time off.
• Short- and long-term incentives and program-specific awards may also be available.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed