Linux Platform Engineer

CACI International Inc; Hampton (VA); On-site; USD 75,000 - 158,000; Full time

Job summary

CA CI International Inc. is seeking a Linux Platform Engineer to design, implement, and support enterprise CDS platforms enabling secure data sharing between classified and unclassified environments. You will work on interfaces, user accounts, and automation to improve reliability for DoD missions.

Join a mission-driven team delivering secure, scalable Linux infrastructure across multiple locations. A TS/SCI-eligible clearance and hands-on Linux/VMware experience are essential for this critical

Qualifications

• Active Top Secret clearance with SCI eligibility required.
• BA/BS degree in a related field; AA/AS and additional experience may be considered.
• Minimum 5 years’ experience in RHEL Administration.
• Minimum 5 years’ experience with VMware.
• Minimum 5 years’ experience applying security patches to Linux systems.
• Current DoD 8140 cybersecurity certification (e.g., CompTIA Security+ or CISSP).
• Strong problem‑solving abilities and customer service orientation.
• Broad experience with system/server hardware, operating systems, software applications, and network connectivity.

Responsibilities

• Design, engineer, and maintain enterprise CDS platforms to ensure secure, reliable cross‑domain data transfer.
• Administer and configure user interface applications and external services to deliver seamless interaction with CDS systems.
• Manage and maintain user accounts across supported environments.
• Implement and sustain monitoring, logging, and alerting capabilities for platform health and performance.
• Partner closely with cybersecurity teams to ensure compliance with DoD security policies and accreditation standards.
• Troubleshoot and resolve complex system and platform issues while supporting end users.
• Automate deployment processes to improve efficiency and consistency.
• Document system architectures, technical procedures, and operational workflows.

Skills

RHEL Administration

VMware

Security patches

Problem solving

Customer service

Team collaboration

Education

Active Top Secret clearance with SCI eligibility

BA/BS degree in a related field

DoD 8140 cybersecurity certification

Tools

DoD cybersecurity tools

Job description

Job Title: Linux Platform Engineer

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

* * *

The Opportunity:

Join a mission-driven team as a Linux Platform Engineer. The Linux Platform Engineer will be designing, implementing, and supporting enterprise Cross Domain Solution (CDS) platforms that enable secure data sharing between classified and unclassified environments. In this role, you will build and maintain intuitive software and infrastructure that directly supports Air Force personnel across multiple locations. If you enjoy solving complex technical challenges, improving user experience, and making an impact on national security, this is an excellent opportunity to shine.

Responsibilities:

• Design, engineer, and maintain enterprise CDS platforms to ensure secure, reliable cross‑domain data transfer
• Administer and configure user interface applications and external services to deliver seamless interaction with CDS systems
• Manage and maintain user accounts across supported environments
• Implement and sustain monitoring, logging, and alerting capabilities for platform health and performance
• Partner closely with cybersecurity teams to ensure compliance with DoD security policies and accreditation standards
• Troubleshoot and resolve complex system and platform issues while supporting end users
• Automate deployment processes to improve efficiency and consistency
• Document system architectures, technical procedures, and operational workflows

Qualifications:

Required:

• Active Top Secret clearance with SCI eligibility
• BA/BS degree in a related field (AA/AS and additional experience may be considered)
• Minimum 5 years’ experience in RHEL Administration
• Minimum 5 years’ experience with VMware
• Minimum 5 years’ experience applying security patches to Linux systems
• Current DoD 8140 cybersecurity certification (e.g., CompTIA Security+ or CISSP)
• Strong problem‑solving abilities and customer service orientation
• Broad experience with system/server hardware, operating systems, software applications, and network connectivity
• Ability to work proactively, anticipate issues, and use resources efficiently
• Experience working collaboratively with client managers and system users

Desired:

• Administrator‑level certifications in technologies such as Microsoft, RHEL, Linux, or VMware
• VM certification
• SEIM implementation and/admin experience
• Experience with GitOps

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:

$75,200-$158,100

CACI is anEqualOpportunity 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 otherprotectedcharacteristic.