ICS Network & Security Administrator (Contract)

Quantum World Technologies Inc.; San Diego (CA); On-site; USD 80,000 - 100,000; Full time

Job summary

A tech company in the United States seeks a Mid-Senior level network and systems administrator to maintain and secure the control system network infrastructure. Responsibilities include managing network infrastructure, implementing cybersecurity policies, and providing after-hours support. Ideal candidates hold a Bachelor’s degree in IT or Cybersecurity with 4+ years of experience in network administration.

Qualifications

• 4+ years of experience in network or systems administration.
• Familiarity with industrial control systems (DCS, SCADA, or PLC-based networks).
• Knowledge of cybersecurity frameworks and governance practices (e.g., NIST, ISA/IEC 62443).

Responsibilities

• Administer and maintain Windows, Unix/Sun systems, and associated servers.
• Manage network infrastructure (switches, routers, firewalls, fiber) used in control and monitoring systems.
• Monitor system health, logs, and network performance for early issue detection.

Skills

Network protocols

Routing

VLANs

Segmentation

Firewall administration

Security rule management

System documentation

Configuration management

Education

Bachelor’s degree in IT, Cybersecurity, or related field

Job description

A tech company in the United States seeks a Mid-Senior level network and systems administrator to maintain and secure the control system network infrastructure. Responsibilities include managing network infrastructure, implementing cybersecurity policies, and providing after-hours support. Ideal candidates hold a Bachelor’s degree in IT or Cybersecurity with 4+ years of experience in network administration.