Principal Linux Infrastructure Engineer (TS/SCI with Poly Required)

DeNOVO Solutions • Aurora, CO

21d • Onsite

About The Position

DeNOVO Solutions is seeking a highly experienced Senior Linux Infrastructure Engineer to support the day-to-day operation, administration, security, and continued evolution of DeNOVO's technical infrastructure. This position will serve as a senior technical resource responsible for maintaining reliable and secure Linux-based environments while helping shape DeNOVO's infrastructure strategy for future growth and scalability. The ideal candidate brings deep hands-on experience supporting classified and unclassified environments, administering complex Linux infrastructure, overseeing windows-based infrastructure, securing systems and networks, and troubleshooting across the full infrastructure stack. In addition to supporting current operations, this role will help evaluate infrastructure requirements, identify technical gaps, recommend improvements, and establish scalable approaches that allow DeNOVO's infrastructure to grow alongside expanding mission, program, and organizational requirements.

Requirements

• 20 years of progressive experience supporting classified and unclassified IT environments.
• 15 years of hands-on Linux experience, including administration, configuration, troubleshooting, maintenance, and deployment.
• Strong working knowledge of Windows environments and integration between Linux and Windows-based systems.
• Extensive experience with the selection, setup, configuration, deployment, administration, and troubleshooting of networks and infrastructure technologies.
• 10+ years of experience configuring and operating servers, databases, and connected network infrastructure.
• 10+ years of experience configuring firewalls and implementing infrastructure and system hardening.
• 15+ years of experience supporting DoD and/or Intelligence Community environments.
• Demonstrated ability to troubleshoot complex infrastructure issues across operating systems, networking, compute, storage, security, and connected systems.
• Strong understanding of secure infrastructure architecture, network security, access control, system hardening, and infrastructure resiliency.
• Experience operating within highly secure and mission-sensitive technical environments.
• Ability to independently evaluate infrastructure requirements and recommend technically sound solutions.
• Ability to communicate complex technical concepts and recommendations to both technical and non-technical stakeholders.
• Active TS/SCI clearance with Polygraph.
• Bachelor's degree in Information Technology, Computer Science, Information Systems, Engineering, or a related technical discipline preferred. A bachelor's degree in a related field may substitute for up to two years of required professional experience.
• Current Security+ Certification

Nice To Haves

• 20 years of progressive IT leadership experience, including increasing responsibility for infrastructure operations, technical decision-making, architecture, or team leadership.
• Experience developing infrastructure roadmaps or modernization strategies.
• Experience planning infrastructure capacity and scalability for growing organizations or mission environments.
• Experience serving as a senior technical authority or infrastructure architect within classified environments.
• Experience mentoring engineers, administrators, or other technical personnel.
• Familiarity with DoD and Intelligence Community cybersecurity, system accreditation, and infrastructure security requirements.

Responsibilities

• Support the administration, operation, maintenance, and troubleshooting of Linux-based infrastructure across classified and unclassified environments.
• Lead the selection, configuration, deployment, administration, and lifecycle management of servers, networks, infrastructure components, and supporting technologies.
• Maintain and optimize Linux environments while providing support and integration expertise across Windows-based systems.
• Configure, operate, maintain, and troubleshoot servers, databases, network devices, storage, and connected infrastructure.
• Design and maintain secure network and infrastructure configurations supporting organizational and mission requirements.
• Configure and administer firewalls, access controls, system security policies, and other infrastructure security technologies.
• Implement infrastructure hardening practices consistent with DoD, Intelligence Community, and organizational security requirements.
• Diagnose and resolve complex infrastructure, operating system, network, performance, and connectivity issues.
• Monitor infrastructure health, capacity, availability, and performance and identify opportunities for improvement.
• Support infrastructure upgrades, modernization efforts, migrations, technology refreshes, and expansion initiatives.
• Evaluate current infrastructure architecture and recommend solutions that improve scalability, resilience, security, maintainability, and performance.
• Develop technical approaches that allow DeNOVO's infrastructure to scale as organizational, customer, compute, storage, network, and security requirements increase.
• Support continuity of operations, system recovery, backup, redundancy, and infrastructure resiliency planning.
• Develop and maintain infrastructure documentation, configurations, diagrams, procedures, and technical standards.
• Provide senior-level technical guidance to leadership and engineering teams regarding infrastructure, architecture, security, technology selection, and future requirements.
• Mentor and provide technical guidance to infrastructure and IT personnel as appropriate.
• Coordinate with cybersecurity, engineering, security, program, and corporate stakeholders to ensure infrastructure solutions meet operational and mission requirements.

Benefits

• Medical, Dental, and Vision Premiums 100% Employer Paid for you and your legal dependents or plus up, cost split plan.
• DeNOVO Paid Health Reimbursement Account (HRA).
• 401k with 6% Match.
• 11 Paid Federal Holidays.
• 120 hours of Paid Time Off (PTO).
• Company Outings and Trips.
• Tuition Reimbursement, Skillset Training, and New/Renewed Certification assistance.
• HomeFundIt Company Down Payment Match – Employer match towards the down payment of buying a new home.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior