Systems Administrator

Credence is one of the largest privately held technologies services company in the country, repeatedly recognized as a top place to work, and have been on the Inc. 5000 Fastest Growing Private Companies list for the last 12 years. We practice servant leadership and believe that by focusing on the success of our clients, team members, and partners, we all achieve greater success.

At Credence, we support our clients’ mission-critical needs, powered by technology. We provide cutting-edge solutions, including AI/ML, enterprise modernization, and advanced intelligence capabilities, to the largest defense and health federal organizations. Through partnership and trust, we increase mission success for warfighters and secure our nation for a better future.

We value innovation, integrity, and continuous learning—and we are committed to investing in the next generation of tech talent.

Credence has an immediate need for an experienced Systems Administrator with a strong focus on IT security to support and secure our enterprise infrastructure across cloud and on-premise environments. This role is responsible for system administration, security operations, and technical support across platforms including Microsoft 365, Azure, AWS, Google Cloud Platform, and various endpoint and security tools. The ideal candidate will bring a proactive, collaborative approach to solving complex technical challenges while maintaining a secure and efficient IT ecosystem.to work out of our headquarters location in McLean VA  (Hybrid).

• Monitor, analyze, and respond to security alerts and incidents across systems and networks.
• Administer and maintain cloud and on-premise systems (Windows, macOS, Linux).
• Manage user accounts and directory services (Active Directory, Azure AD/Entra ID, Group Policy).
• Support and maintain security tools including Microsoft Sentinel, Defender, Proofpoint, Nessus, and email firewalls.
• Conduct vulnerability assessments and remediation efforts, including system hardening and patching based on Nessus scan results.
• Provide advanced technical support and resolve escalated IT tickets with professionalism and efficiency.
• Manage endpoints using Microsoft Endpoint Manager, including Intune and Windows Autopilot deployments.
• Assist in disaster recovery planning, backup strategies, and restoration processes.
• Support implementation and enforcement of Identity and Access Management (IAM) policies and secure access protocols.
• Analyze email headers and maintain secure mail flow policies to protect organizational communications.
• Collaborate on secure software development practices and contribute to compliance and audit readiness (NIST, ISO 27001, CMMC).
• Conduct and support phishing simulations and security awareness initiatives.
• Participate in a bi-weekly on-call rotation to provide after-hours support as needed.

• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field.
• US citizenship is required with the ability to obtain Top Secret, or TS/SCI
• 5+ years of experience in systems administration and cybersecurity.
• Proficient in managing Microsoft 365, Azure, AWS, and Google Cloud environments.
• Hands-on experience with Microsoft Defender, Sentinel, Proofpoint, Nessus, and vulnerability management practices.
• Strong scripting skills in PowerShell and/or Python for automation and integration tasks.
• In-depth knowledge of Windows, Apple, and Linux operating systems.
• Familiarity with backup systems, disaster recovery protocols, and enterprise networking fundamentals.
• Excellent troubleshooting, documentation, and interpersonal communication skills.

Preferred Qualifications:

• Certifications such as CISSP, AZ-500, AWS Security Specialty, CCNA, AWS Certified Solutions Architect – Associate, or similar.
• Experience with VMware or Hyper-V virtualization environments.
• Strong understanding of compliance frameworks (e.g., NIST, ISO 27001/27002, CMMC).
• Familiarity with JSON and YAML scripting.
• Experience leading or contributing to IT/security-related project initiatives.

Please join us, as together we build a better world one mission at a time powered by Technology and its People!

Locations: 

HQ- McLean VA - Tyson's Corner

Hybrid 3 days in-office.

#LI-Hybrid

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