Illumination Works ยท 3 months ago
Operational Technology (OT) System Administrator
United States
Full-time
Remote
Mid Level
3+ years expIllumination Works LLC is a technology partner specializing in data solutions and digital transformation. They are seeking an OT System Administrator responsible for the maintenance, configuration, and reliable operation of systems and networks supporting industrial operations, ensuring compliance with cybersecurity best practices.
AnalyticsInformation TechnologySoftware
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Administer and support OT systems including SCADA, PLCs, HMIs, RTUs, and DCS within government-operated facilities
Support and manage OT networks and ensure compliance with government cybersecurity frameworks (e.g. NIST 800-82, CISA guidelines, FISMA)
Maintain availability, integrity, and security of OT networks and systems
Apply patches, updates, and backups to OT hardware/software in accordance with change management procedures
Monitor OT network performance and diagnose, resolve, and document system issues
Work closely with IT teams to ensure segmentation and appropriate integration between IT and OT networks
Maintain hardware/software inventory and OT network diagrams
Assist in disaster recovery planning and implementation for OT environments
Ensure compliance with regulatory and internal standards related to industrial control systems
Participate in 24/7 on-call rotation for critical system support
Qualification
Required
3+ years of experience in a systems administration or network administration role, preferably within an OT/ICS environment
Strong knowledge of Windows Server, Active Directory, and networking protocols (TCP/IP, VLANS, firewalls)
Working knowledge of Windows/Linux system administration in operational environments
Familiarity with industrial protocols such as Siemens, Allen-Bradley, BacNet, Modbus, OPC, DNP3, and Ethernet/IP
Experience with SCADA systems (e.g. GE, Schneider, Siemens, Emerson) and OT asset management tools
Familiarity with Kepware
Experience with virtualization (VMware, Hyper-V), AWS, and backup solutions
Familiarity with cybersecurity best practices and government cybersecurity mandates (e.g. NIST, CISA)
Experience with endpoint protection, intrusion detection/prevention systems (IDS/IPS), and SIEM tools in OT environments
Understanding of data frequencies
Strong analytical and diagnostic skills
Ability to work independently and collaboratively in cross-functional teams
Excellent communication skills, both verbal and written
Detail-oriented with a proactive approach to systems reliability and security
Must have Security + certification
Must have or be willing to obtain Secret Clearance (this requires US citizenship)
Acceptable candidates must successfully pass a drug test and background screen
Preferred
Other certifications such as CySA+, Cisco CCNA/CCNP, GIAC Global Industrial Cyber Security Professional (GICSP), or ISA/IEC 62443-related credentials
Benefits
Market competitive salary
Generous PTO package
Comprehensive medical, dental, vision and life insurance plans
401K
Short/long-term disability insurance
Fun and engaging culture
Training opportunities to keep you up to speed on the latest technologies
Company
Illumination Works
Illumination Works is an information technology company providing analytics and integration solutions.
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Jon Mitchell
CEO & CTO
Recent News
Seattle TechFlash
2025-10-03
2025-09-12
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