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Senior Systems Administrator

Location: Knoxville, TN

Type: Full Time

Min. Experience: Mid Level

Helping our clients achieve their goals starts with attracting and obtaining top talent. We look for highly innovative and bright individuals; give them the tools they need, then give them the freedom to do what they do best. We empower our employees to make the best of their opportunities in a rewarding and challenging environment.

We have a passion for excellence. Our employees thrive on making a difference and generating results for our clients in a flexible environment that offers support and camaraderie. No matter where you are located throughout the globe, DPRA offers vast learning opportunities and a flexible work style to help our staff manage responsibilities and add balance to their lives.

Along with a flexible workplace, DPRA offers a Total Rewards program that provides its employees with not only a competitive salary, but also covers a wide variety of benefits and programs! If you are looking for a challenging position in an innovative company, then this is the position for you.

Currently, DPRA is searching for a Senior Systems Administrator in our Knoxville, Tennessee office location. This full-time position will oversee the administration, maintenance and security of a distributed IT infrastructure supporting multiple Microsoft 365 tenants and a geographically dispersed workforce.  This role is reponsible for managing both on-site and remote environments across multiple locations and time zones, ensuring operational continuity, regulatory compliance, and enterprise-level security standards.  The ideal candidate is a highly analytical, service-oriented IT professional with deep Microsoft 365 expertise and experience operating within regulated environments such as CMMC and NIST 800-171.      

Key Responsibilities:
  • Microsoft 365 Administration
    • Administer multiple Microsoft 365 tenants, including Exchange Online, SharePoint Online, Microsoft Teams, Entra ID (Azure AD), Conditional Access Policies; and Multi-Factor Authentication (MFA)
    • Manage identity governance, security policies, and tenant configurations
    • Perform log reviews and monitor system activity to ensure compliance and security integrity
  • Infrastructure & Systems Management
    • Administer physical and virtual servers across distributed environments
    • Manage network infrastructure including firewalls, switches, and remote office connectivity
    • Oversee patch management, vulnerability remediation, and endpoint protection
    • Provide Tier 2/3 escalation support
    • Support and manage Remote Monitoring & Management (RMM) tools
    • Administer VoIP systems
  • ​​​​​​​Security & Compliance
    • ​​​​​​​Ensure compliance with CMMC Level 1 (or higher), NIST 800-171, and NIST 800-53 (as applicable)
    • Conduct internal system compliance reviews and assessments
    • Develop and maintain technical documentation and Standard Operating Procedures (SOPs)
    • Participate in IT Change Boards and change management processes
    • Support audit readiness initiatives
  • ​​​​​​​​​​​​​​​​​​​​​Physical Security Systems
    • ​​​​​​​Oversee IP-based camera systems
    • Administer badge readers and access-control systems
    • Ensure physical security systems integration with cybersecurity policies
  • ​​​​​​​​​​​​​​​​​​​​​Collaboration & Strategic Support
    • ​​​​​​​Work closely with development teams and systems engineers to support development, testing and deployment
    • Participate in disaster recovery planning and business continuity strategies
    • Assist with vendor management and contract negotiations​​​​​​

Required Qualifications:

  • U.S. citizenship required, with the ability to obtain and maintain a DoW security clearance (active clearance preferred).
  • Bachelor’s degree in IT Security, Computer Science, Information Systems Technology, or a related discipline, or equivalent professional experience. 
  • Minimum of seven years of IT Administration experience, including at least three years in a regulated environment (CMMC level 1 or higher, NIST 800-171, NIST 800-53) .
  • Exceptional written and verbal communications skills. 
  • Strong service orientation and the ability to work independently.
  • Advanced analytical and problem-solving abilities. 
  • Excellent organizational, time management and customer service skills.
  • Experience in participating in IT Change Boards and conducting system compliance assessments. 
  • Experience drafting SOPs to support IT consistency and audit readiness.
  • Networking – 3+ years of experience with firewalls, switches, and physical security hardware.
  • Prior experience with vendor management, contract negotiations, disaster recovery planning, and business continuity strategies.   
  • At least three years of Microsoft 365 Administration experience.
Preferred Qualifications:
  • CompTIA Security + (Active or ability to obtain)
  • Microsoft 365 Certified Administrator
  • CCNA Certification


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