Systems Administrator (Unix/Linux), Senior

Position Title: Systems Administrator (Unix/Linux), Senior

Location: Dahlgren, VA.

Clearance: ****This position requires an Active Secret Clearance****

This position is contingent upon contract award.

Position Summary:

Command Cyber Solutions is seeking a Systems Administrator (Unix/Linux), Senior to support enterprise system administration activities within a structured Navy IT environment. This role provides advanced administration of Linux-based systems, supports configuration and lifecycle tasks, manages security compliance activities, and contributes to system reliability and performance. The ideal candidate brings deep technical experience with Linux environments, strong troubleshooting capabilities, and the ability to operate independently while supporting mission-focused IT operations.

Essential Duties & Responsibilities:

• Perform advanced system administration of Unix/Linux environments, including configuration, updates, and system optimization.
• Support installation, configuration, and maintenance of system software, applications, and core services.
• Implement and maintain system security baselines, patches, and compliance requirements using approved tools and procedures.
• Monitor system performance, identify issues, and recommend improvements to enhance stability and efficiency.
• Manage user accounts, permissions, and access controls across supported systems.
• Maintain documentation for system configurations, procedures, and administrative tasks.
• Troubleshoot complex technical issues and coordinate with team members and stakeholders to ensure timely resolution.
• Support automation initiatives using scripting or configuration management tools to improve consistency and reduce manual tasks.

Education, Certification & Experience Requirements:

Education Required:

• Bachelor’s Degree in a technical field (Preferred).

Certification Required:

• Active Secret security clearance with the ability to obtain Top Secret or higher.
• IAT III certification in accordance with DoD 8570 requirements.

Experience Required:

• Six (6) years of experience performing system administration on Unix/Linux platforms in enterprise, Federal, or DoD environments.
• Experience supporting system security, configuration management, system installation, patching, and troubleshooting in multi-system environments.

Knowledge, Skills & Abilities:

Knowledge:

• Knowledge of Unix/Linux system administration practices demonstrated through consistent and accurate configuration, maintenance, and troubleshooting of systems.
• Knowledge of system security, patching, and baseline compliance shown through adherence to security requirements and successful implementation of updates.

Skills:

• Skill in diagnosing complex system issues evaluated through quality reviews, reduction of recurring system problems, and efficiency of implemented solutions.
• Skill in maintaining clear system documentation demonstrated through organized, accurate, and up-to-date administrative procedures and configuration records.

Abilities:

• Ability to manage system administration tasks and deadlines, measurable by timely and complete execution of assigned system updates, configurations, and support requests.
• Ability to follow structured procedures and maintain stable system environments, measurable through periodic configuration reviews and adherence to administrative guidelines.

Working Conditions/Working Environment/Physical Demands:

• This position is performed in a professional environment, remote/home office setting, or on-site government facility, as required by the contract.
• Standard work schedule is Monday through Friday, during normally scheduled business hours, with occasional evening or weekend work required to meet critical deadlines.
• Work involves extensive computer and secure network use, including periods of prolonged sitting, data entry, and screen time.
• The role requires working independently with minimal supervision, while also collaborating virtually or in person with CCS teams, subcontractors, and government stakeholders.
• Occasional travel may be required for customer meetings, training, or project-related activities.

Why Join Command Cyber Solutions:

We recognize that our success begins with our people. We are dedicated to fostering a professional, collaborative, and growth-oriented environment where employees are empowered to excel and advance their careers, CCS offers opportunities to contribute to high-impact federal initiatives, supported by robust professional development programs, competitive compensation, comprehensive benefits, and flexible work arrangements. We prioritize investing in our workforce, ensuring each team member has the resources, support, and career pathways to achieve long-term success while delivering meaningful results for our clients.

Culture:

At CCS, you’ll be a part of a team that genuinely supports one another and where leadership is invested in the well-being and success of every employee. We foster a work culture where people are valued for who they are, not just what they do, and where your career goals are taken seriously. You’ll be encouraged to grow through mentorship, hands-on experience, and access to continued learning opportunities that align with your aspirations. Whether you’re looking to deepen your expertise, earn new certifications, or take on leadership roles, CCS provides the environment and support to help you get there. Leadership is approachable, collaboration is natural, and success is shared. At CCS, you’re not just joining a company; you’re joining a community committed to your growth and success.

Benefits:

We offer a comprehensive benefits package designed to support the health, financial security, and overall well-being of our employees and their families. Our offerings include medical and prescription drug plans, dental coverage, group life insurance, and options for supplemental life insurance to provide additional protection. We also provide short-term and long-term disability insurance, flexible spending accounts, and employee assistance programs to help employees manage personal and professional needs. Our package also includes identity theft protection and a competitive 401(k) retirement savings plan with company contributions, giving employees valuable resources to protect their future and achieve long-term financial goals.

Command Cyber Solutions is an equal opportunity employer. Command Cyber Solutions does not discriminate in employment opportunities or practices on the basis of race, color, religion, sex, national origin, age, disability, marital status or any other characteristic protected by law.

Potawatomi Federal Solutions is a federal government contractor who provides essential services and administrative support to Potawatomi Business Development Corporations’ family of industry-leading federal government contracting subsidiaries. We are 100% tribally owned small business of the Forest County Potawatomi Community of Wisconsin. In 2007, we launched with one mission in mind: to create a profitable tribal enterprise to allow us to invest in the health, wellness, education, environment and future of our people for generations to come. What fuels your fire? We invite you to find out by exploring our career opportunities and joining our dynamic team of innovative professionals!