Systems Administrator

Sentar is proud to be an employee-owned company, fostering a culture of empowerment, collaboration, and innovation. Sentar is dedicated to developing the critical talent that the connected world demands to create solutions to address the convergence of cybersecurity, intelligence, analytics, and systems engineering. We invite you to join the team where you can build, innovate, and secure your career.

Sentar is seeking a Systems Administrator in Chantilly, VA!

Role Description:

Position Overview

As a Systems Administrator, you will be responsible for installing, configuring, and maintaining operating system workstations and servers, including web servers. You will support the multi-enclave environment (Unclassified, Secret, and Top Secret/SCI) that enables users to collaboratively perform their work using a variety of tools and applications.

Key Responsibilities

• Install, configure, and maintain operating system workstations and servers
• Perform software installations and upgrades to operating systems and layered software packages
• Schedule installations and upgrades in accordance with established IT policies and procedures
• Monitor and tune systems to achieve optimum performance levels
• Ensure workstation/server data integrity by implementing appropriate software and hardware solutions
• Ensure data/media recoverability through system backups and database archive operations
• Develop and promote standard operating procedures
• Conduct routine hardware and software audits to ensure compliance with standards and configurations
• Develop and maintain comprehensive operating system hardware and software configuration databases
• Support analytical tool infrastructure
• Participate in Program Increments (PIs) and Agile Release Train (ART) activities
• Respond to and resolve critical incidents within designated resolution timelines

Qualifications:

Clearance Level: Active Top Secret (TS) clearance with eligibility for Sensitive Compartmented Information (SCI)

Education: Bachelor's degree in Computer Science, Information Technology, or related field

Experience:

• Minimum of 8 years of experience in systems administration
• Experience with SAFe Agile framework
• Strong understanding of multi-enclave environments
• Demonstrated experience managing complex systems in government environments

Advanced proficiency with:

• • Complex multi-enclave environments
  • Advanced system security hardening
  • High-availability system configurations
  • Disaster recovery planning and implementation
  • Advanced troubleshooting and problem resolution
  • System automation and orchestration
  • Performance optimization techniques
  • Capacity planning and resource management
  • Security accreditation processes

Additional Technical Experience

Experience with:

• • Cloud platforms (AWS GovCloud, SC2S, C2S)
  • Containerization (Docker, Kubernetes)
  • Configuration management tools
  • LDAP/OpenLDAP, ADFS, Keycloak
  • Elasticsearch, Splunk, and other data platforms
  • DevSecOps practices and tools
  • SAFe Agile methodologies

Work Environment

• Primary location: Chantilly, VA
• May require occasional travel for Program Increment planning sessions
• Must be a U.S. citizen and able to pass a background check and polygraph examination
• May require flexible scheduling to support critical operations
• Must be able to respond to critical incidents within designated resolution timelines

Benefits at Sentar:

Our unique ownership model attracts top talent, giving employees the freedom to take initiative and drive meaningful improvements. In addition to cultivating a thriving and inclusive work environment, Sentar offers an extensive benefits package designed to support the well-being of employees and their families. Employee ownership is the foundation of our culture, promoting participation, teamwork, and accountability while ensuring long-term financial security and a commitment to excellence.

• Voluntary Medical, Dental, Vision, with Health Savings or Flexible Spending Plan options
• Voluntary Life, Critical Illness, Accident, and Long Term Care insurance options
• Group Term Life, Short-Term and Long-Term Disability is provided by Sentar to all qualifying employees
• Generous 401(k) match
• Competitive PTO plan that graduates quickly with years of service
• Other leave programs; holiday schedule along with bereavement, maternity, jury and military duty
• Mental health awareness programs
• Tuition reimbursement
• Professional development reimbursement
• Recognition and Awards programs

If you are not ready to apply for this position, submit your resume here to join our talent community . We'll keep you updated occasionally on new job opportunities.

Sentar is an Affirmative Action and Equal Opportunity Employer M/F/Vets/Persons with Disabilities

Our culture is one of inclusivity and support. Sentar is proudly an Equal Opportunity and VEVRAA Federal Contractor Employer M/F/Vets/Persons with Disabilities. Follow these links to learn more about your rights: EEO Is the Law Poster ; EEO Is Law Supplement ; and Pay Transparency .

We want you to build your career at Sentar, so if you are an individual with a disability and require a reasonable workplace accommodation applying for a job or at any point in the employment process, contact the Recruiting Manager at recruiting@sentar.com . Please indicate the specifics of the assistance needed. Thank you for considering Sentar in your employment search.

Build, Innovate, Secure Your Career at Sentar.