Sr. Linux Infrastructure Engineer

Dexian; Spring (TX); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Dexian is leading a government-focused project to stand up a secure Azure Government GCC High Linux infrastructure. The senior Linux engineer will drive the build, harden the environment, and integrate STIG controls while aligning with CMMC requirements.

The role is project-focused (roughly 90% build, 10% operations) with mentorship for junior engineers and collaboration across cybersecurity, architecture, network, and cloud teams.

Qualifications

• Senior-level Linux administration with RHEL or Oracle Linux.
• Hands-on Azure provisioning experience for infrastructure.
• Experience implementing STIG and verifying hardening.
• Familiarity with NIST 800-171 and CMMC.
• Experience in secure government or regulated environments.

Responsibilities

• Architect, provision, and harden Linux infrastructure in Azure Government (GCC High).
• Implement and verify STIG hardening; support vulnerability reviews.
• Support CMMC compliance alignment with infrastructure.
• Build automation for provisioning, configuration, and patch management (Ansible, Terraform).
• Create standards and documentation; mentor junior engineers.

Skills

Senior Linux administration

RHEL / Oracle Linux

Azure infrastructure provisioning

STIG implementation

NIST 800-171 knowledge

CMMC compliance

Tools

Terraform

Ansible

Azure Government

Job description

Location

Spring, TX (Hybrid - 3 days onsite Tue-Thu, remote Mon/Fri)

Type

W2 Contract (12+ months, likely to extend)

Citizenship

U.S. citizenship required (government environment - no sponsorship, no clearance required)

About the Role

A well-established organization in the maritime sector is standing up a brand-new Azure Government (GCC High) environment from the ground up, and is looking for a senior Linux engineer to lead the build. This is a project-focused engineering role (roughly 90% build, 10% operational support) - not a ticket-queue administration seat. You'll architect and provision the new government-side Linux infrastructure, implement and verify STIGs, and help drive the organization's CMMC compliance initiative. You'll also write the standards and documentation the rest of the team follows, and mentor junior engineers along the way.

If building a secure environment correctly from day one is more interesting to you than maintaining someone else's, this role is built for that.

What You'll Do

• Architect, provision, and harden new Oracle Linux and RHEL infrastructure in Azure Government (GCC High)
• Implement and verify STIG hardening; support weekly vulnerability reviews and remediation
• Support the organization's CMMC compliance initiative and align infrastructure to NIST 800-171
• Build automation for provisioning, configuration, and patch management (Ansible and similar)
• Author standards, procedures, and implementation documentation
• Mentor junior Linux engineers and collaborate daily across cybersecurity, enterprise architecture, network, cloud, and application teams

Must-Have Qualifications

• Senior-level Linux administration, especially RHEL and/or Oracle Linux
• Hands-on Microsoft Azure experience (infrastructure provisioning, not just identity administration)
• STIG implementation and verification experience
• Working knowledge of NIST 800-171 and CMMC
• Experience building and hardening infrastructure in secure or regulated government environments

Nice to Have

• Azure Government / GCC High experience specifically
• Terraform, Ansible, or other infrastructure automation
• Experience mentoring or leading within an infrastructure team

Hybrid commercial and government infrastructure (~1,000 Linux servers total, ~130 on the government side). Government environment is fully cloud-based; the new build is greenfield. Collaborative team culture that values engineers who ask questions, follow process, and work cross-functionally - not lone wolves.

Dexian stands at the forefront of Talent + Technology solutions with a presence spanning more than 70 locations worldwide and a team exceeding 10,000 professionals. As one of the largest technology and professional staffing companies and one of the largest minority-owned staffing companies in the United States, Dexian combines over 30 years of industry expertise with cutting-edge technologies to deliver comprehensive global services and support. Dexian connects the right talent and the right technology with the right organizations to deliver trajectory-changing results that help everyone achieve their ambitions and goals. To learn more, please visit https://dexian.com/.

Dexian is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, sexual orientation, gender identity, age, national origin, ancestry, citizenship, disability, or veteran status.