Tier 2 Systems Administrator

CACI; United States; On-site; USD 87,000 - 182,000; Full time

Job summary

CA Contemporary? CACI is seeking a Tier 2 Systems Administrator to support mission-critical IT systems and provide escalation for Tier 1 issues. The role focuses on maintaining secure infrastructure, performing health checks, backups, and access control administration in a fast-paced environment.

The candidate will work with Windows, Linux, and Solaris servers, Active Directory, and VMware, coordinating with end users and security best practices. Strong communication is essential for success.

Qualifications

• Active TS/SCI with Poly is required.
• 2–4 years of hands-on IT/system support experience.
• Experience with Windows/Linux/ Solaris servers and Active Directory.

Responsibilities

• Provide advanced technical support for hardware, software, database, and network issues escalated from Tier 1.
• Administer and maintain servers (Windows, Linux, Solaris), desktops, and Active Directory.
• Perform system health checks, monitor performance, and ensure backups.
• Assist in onboarding/offboarding and access controls.
• Document issues and solutions in ticketing systems and knowledge bases.

Skills

TS/SCI with Poly

IAT Level II Certification

Unix command line

Windows Server

Active Directory

DNS

Group Policy

VMware

Security best practices

Communication skills

Tools

ServiceNow

Jira

Confluence

Job description

Job Title: Tier 2 Systems AdministratorJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: NoneType of Travel: None* * *

The Opportunity

We are seeking a skilled and motivated Tier 2 System Administrator to join our growing IT team. In this role, you will serve as an escalation point for Tier 1 support and be responsible for maintaining and troubleshooting mission critical IT systems, supporting end users, and ensuring the security and performance of our infrastructure. This position is ideal for a tech-savvy professional with strong problem-solving skills and a passion for technology.

Responsibilities

• Provide advanced technical support for hardware, software, database, custom software and network-related issues escalated from Tier 1.
• Administer and maintain servers (Windows, Linux, Solaris), desktops and applications, printers and peripheral equipment, Active Directory and virtual environments (VMware).
• Perform system health checks, monitor system performance and ensure backups are running for restoration capability.
• Assist in onboarding/offboarding of users, including account setup and access controls.
• Document technical issues, solutions, and processes in ticketing systems and knowledge bases.

Qualifications

Required

• Must have an active TS/SCI with Poly
• Must have at least an IAT Level II Certification: Such as Security+
• Must be willing to participate in weekly day support hours rotation - 7-3, 8-4, 9-5, 10-6 and an after-hours on-call support rotation
• 2–4 years of hands-on experience in a system or IT support role
• Strong knowledge and experience with command line in a Unix Environment, Windows Server, Windows desktop, Active Directory, DNS, and Group Policy
• Experience with virtualization technologies (VMware)
• Proficiency in troubleshooting custom software, network connectivity and performance issues
• Strong understanding of security best practices and data protection
• Excellent communication and interpersonal skills

Desired

• Scripting knowledge (PowerShell, Python, Bash, etc.)
• Experience with ticketing systems (e.g., ServiceNow, HelpNow, Jira, Confluence)
• Exposure to ITIL practices or formal change management best practices
• Prior experience supporting real-time operations/Mission Critical infrastructure
• Familiarity with CISCO switches and firewalls
• Familiarity and experience with infrastructure monitoring tools (SCOM preferred)

What You Can Expect

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$86,600 - $181,800

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.