Job Description

Avint LLC is seeking a dedicated and technically skilled Mid-Cyber Security Specialist/Analyst for an on-site position in San Diego, CA. In this critical role, you will support and maintain enterprise IT infrastructure in a mission-driven environment, ensuring system reliability, security, and performance. You’ll be responsible for administering and monitoring servers, applying system patches and updates, managing user accounts, and supporting virtualization platforms. Experience with tools such as Active Directory, Windows Server, Linux, VMware or Nutanix, and scripting for automation (PowerShell, Bash, etc.) is essential. Familiarity with security tools and practices, including STIGs, vulnerability remediation, and participation in system accreditation processes, is highly desirable. This position involves working closely with IT, cybersecurity, and operations teams to support day-to-day system functionality, troubleshoot issues, and contribute to system hardening and compliance initiatives.

Location: 100% on-site in San Diego, CA.

Responsibilities:

• Assist with the administration and monitoring of Nutanix Hyperconverged environments supporting FRCS Monitoring servers and applications.
• Support the deployment, configuration, and maintenance of the Cyber Monitoring Services OT Monitoring Platform, including Central Store, Site Store, and Sensors in lab and production settings.
• Perform routine configuration and maintenance of Microsoft SQL Server and Windows Server systems to support cybersecurity operations.
• Utilize the Marine Corps Certification and Accreditation Support Tool (MCCAST V2) to help document compliance efforts and system security posture.
• Provide day-to-day support for network infrastructure within a DoD environment, helping to ensure secure and stable connectivity.
• Understand and assist with interfacing cybersecurity practices across high voltage, water/wastewater, and mechanical control systems.
• Support the administration and monitoring of Unix and Windows systems, applying knowledge of TCP/IP protocols and basic security controls.
• Monitor and maintain Host-Based Security System (HBSS) to detect and respond to potential threats within DoD systems.
• Assist in the monitoring and basic troubleshooting of Automated Metering systems used for energy and utilities management.
• Support DEVSECOPS-aligned activities within USMC environments, ensuring compliance with established cybersecurity policies for ICS/OT systems.
• Assist in routine updates and support of ICS systems such as Metasys, Niagara AX, Alerton, Honeywell, Trend, KMC, American Automatrix, Loytec, Rockwell, and OSI.
• Support communications and system integration using protocols such as BACnet/MSTP, BACnet/IP, N2, LON, and SCADA systems related to high voltage and water/wastewater.
• Apply system and security patches to ICS/OT systems including Metasys, Niagara, Itron, Honeywell, Rockwell, and OSI as part of standard maintenance procedures.
• Assist in executing components of the USMC Assessment & Authorization (A&A) process, including use of MCCAST 2.0 and support for RMF documentation and compliance.
• Help manage and track Plans of Action and Milestones (POAMs) to address findings and vulnerabilities.
• Apply DISA STIGs in coordination with senior staff to ensure systems meet DoD security baselines.
• Assist in interpreting and implementing security controls based on NIST 800-53 and DoDI 8510.01 frameworks.
• Conduct preliminary vulnerability assessments and support risk analysis activities to identify and report on security issues.
• Monitor and analyze cybersecurity data using the Dragos platform to support OT threat detection and situational awareness.

Requirements

Experience:
Minimum 3 years of relevant IT/system administration experience supporting virtualized environments, networks, and OT systems.

Education:
Bachelor’s degree in Information Technology, Computer Science, Cybersecurity, or a related field.

Security Clearance:

Active Secret clearance required.

Certifications:
One or more of the following certifications (or equivalent) are highly desired:

• Cyber Monitoring Services Platform Certified User Certification
• ITIL v4 Foundations
• ICS-VLP Certificate (Courses 210W-01 through 210W-10)
• Risk Management Framework (RMF) Training – USMC specific
• Cisco Certified Entry Networking Technician (CCENT) or Cisco Certified Network Associate (CCNA)
• CompTIA Security+ (Sec+)
• Certified Information Systems Security Professional (CISSP)
• Microsoft Certifications (Server, Azure, or related)

Benefits

Joining Avint is a win-win proposition! You will feel the personal touch of a small business and receive BIG business benefits. From competitive salaries, full health, and generous PTO and Federal Holidays. Additionally, we encourage every Avint employee to further their professional development. To assist you in achieving your goals, we offer reimbursement for courses, exams, and tuition. Interested in a class, conference, program, or degree? Avint will invest in YOU and your professional development!

Avint is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity and Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class.

The salary range for this position is: $100,000-$110,000

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