Role: Network Security Analyst
Location : San Diego, CA (Onsite)
Maintaining and securing the control system network infrastructure. Ensures operation of network, server, and cybersecurity systems supporting industrial automation environments.
Responsibilities:
- Administer and maintain Windows, Unix/Sun systems, and associated servers.
- Manage network infrastructure (switches, routers, firewalls, fiber) used in control and monitoring systems.
- Configure and monitor firewalls, manage rule sets, and perform routine log reviews.
- Maintain user access controls, permissions, and account inventories for DCS/SCADA systems.
- Implement and enforce cybersecurity and governance policies in accordance with organizational and regulatory requirements.
- Maintain backups, perform patching, and ensure antivirus and endpoint protection are current.
- Monitor system health, logs, and network performance for early issue detection.
- Support secure data exchange between control systems, historians, and enterprise systems.
- Maintain accurate documentation for configurations, changes, and access records.
- Provide after-hours or on-call support for control system network issues.
Qualifications
- Bachelor’s degree in IT, Cybersecurity, or related field; or equivalent experience.
- 4+ years of experience in network or systems administration.
- Strong knowledge of network protocols, routing, VLANs, and segmentation.
- Experience with firewall administration and security rule management.
- Familiarity with industrial control systems (DCS, SCADA, or PLC-based networks).
- Knowledge of cybersecurity frameworks and governance practices (e.g., NIST, ISA/IEC 62443)
- Proficiency in system documentation and configuration management.
Preferred
- Experience in OT or critical infrastructure environments.
- Familiarity with backup tools, patch management, and log monitoring utilities.
- Understanding of IT/OT network separation and secure data bridging.
Job Type: Contract
Experience:
- DCS: 1 year (Required)
- Network administration: 4 years (Required)
- System administration: 3 years (Required)
- Network security: 4 years (Required)
- Network management: 4 years (Required)
- SCADA: 1 year (Required)
- PLA: 1 year (Required)
Work Location: On the road
