Infrastructure/Systems Administration - Lead

CACI; Denver (CO); Hybrid; USD 99,000 - 209,000; Full time

Job summary

CACI is seeking a Lead Infrastructure/Systems Administrator to support multiple sites nationwide from a Denver-based team. The role involves deploying desktops, managing Windows OS, networks, VOIP, printing, and security systems, while guiding a technical team and coordinating vendor visits.

Required TS/SCI with Polygraph, a bachelor's degree with 3+ years, Security+ certification, and strong communication skills. Travel up to 25% and remote site support are expected.

Qualifications

• Must have TS/SCI with Polygraph.
• Bachelor's degree or equivalent with at least 3 years of relevant experience.
• Proficient with Windows desktops and Dell hardware.
• Proficient with Microsoft Outlook and basic network concepts.
• Strong written and verbal communication and customer service skills.
• Ability to work independently with minimal supervision and strong time management.
• Security+ certification is required.

Responsibilities

• Image, configure, and deploy desktops (physical/virtual) and troubleshoot hardware.
• Install and troubleshoot end-user apps and certificates.
• Document actions in trouble tickets and meet SLAs.
• Patch network ports and configure switches.
• Manage UPS and coordinate vendor visits for downtime.
• Configure VOIP phones and printing/scanning devices.
• Plan user moves and large projects; mentor junior staff.

Skills

Communication skills

Time management

Customer service

Independent work

Written and verbal communication

Security+ Certification

Education

Bachelor's degree or equivalent

Tools

Windows OS

Dell hardware

Microsoft Outlook

Job description

Job Title: Infrastructure/Systems Administration - LeadJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: Up to 25%Type of Travel: LocalAnticipated Posting End: 11/5/2026

The Opportunity:

This role will support multiple sites across the country via remote support. Travel may occasionally be requested.

Responsibilities:

• Image, configure, and deploy physical and virtual desktops; troubleshoot and repair hardware including desktops, laptops, zero clients, monitors, and docking stations; manage OS, BIOS, disk and data encryption.
• Install and troubleshoot end user apps and certificates.
• Repair and restore data files, decrypt inaccessible files, migrate data for projects, apply and troubleshoot permissions.
• Properly document actions in trouble tickets and meet all SLAs.
• Patch network ports, trace lines, install network switches.
• Configure and maintain UPS devices and batteries, troubleshoot failure, coordinate vendor visits, plan and coordinate downtime with customers.
• Install and configure VOIP phones and voicemail, troubleshoot phone issues.
• Configure print, scan, and fax features on multifunction devices, coordinate multi-step replacements with vendor, troubleshoot communication issues.
• Plan for user moves, including connectivity, computers, and phones.
• Manage large projects.
• Coaches, reviews and delegate work to lower level technical team members.
• Influences others regarding policies, practices, and procedures.
• Maintain and troubleshoot local security/badging systems.
• Prepare obsolete assets for disposal.
• Assist other IT teams as needed.
• Support unclassified and classified systems.

Qualifications:

• Must have minimum TS/SCI with Polygraph.
• Requires bachelor’s degree or equivalent and at least three years of relevant experience.
• Must be proficient with Windows desktop operating systems, as well as Dell hardware.
• Must be proficient with Microsoft Outlook.
• Must have a solid understanding of network communications.
• Must have excellent written and verbal communication as well as customer service skills.
• Must have the ability to work independently and with minimal supervision.
• Must have excellent time management skills.
• Must already possess Security Plus Certification

Desired:

• Linux training/knowledge

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:

$99,300 - 208,600 USD

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.