System Administrator - Senior

Job Description Everforth ECS is seeking a System Administrator - Senior to work in Fairfax, Virginia.

Please Note:

This position is contingent upon contract award. Responsibilities Administer and maintain enterprise systems to ensure operational availability and stability. Implement and manage system configurations and updates to maintain compliance and security. Monitor system performance metrics and health indicators to proactively address potential issues. Lead incident response and resolution efforts to minimize downtime and maintain service integrity. Enforce STIG and cybersecurity compliance requirements across all systems. Collaborate with network, cybersecurity, and infrastructure teams to support enterprise continuity. Support RMF sustainment and change management processes to ensure compliance. Develop and maintain documentation for system administration processes and procedures.

Required Skills Required Qualifications Clearance:

Secret Eligible required S. Citizenship required DoD 8140.03

Compliance:

DoD Cyber Workforce Framework (DCWF) Work Role 451-System Administrator at the Advanced proficiency level Certifications (one or more required): Security

X / CASP+, CCNP

Security, CCSP, FITSP-O, GFACT Education:

Masters or Ph.D in [Computer Science, Cybersecurity, Data Science, Information Systems, Information Technology, Software Engineering] Minimum of 8-10 years of experience administering enterprise systems within DoD or Federal DoDIN-connected environments Proven experience in system updates, configuration management, and patch compliance Experience in performance monitoring and incident resolution for secure enterprise services Familiarity with RMF sustainment and change management processes

Desired Skills Desired Qualifications Clearance:

Active Secret preferred Experience with classified and unclassified network operations Knowledge of DoDIN services and infrastructure Strong analytical and problem-solving skills Ability to work collaboratively in a team environment ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. Everforth ECS is the federal segment of Everforth , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.

We value:

Attracting and developing top talent and high-performing teams Fostering a culture that is engaging, accountable, and mission-driven