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OT/ICS Cybersecurity, Network Security Engineer
Dynanet CorporationOT/ICS Cybersecurity & Network Security Engineer serving as a liaison between OT and IT teams. Support cybersecurity and modernization efforts in industrial control systems and IoT environments.
Tech Stack
Tools & technologiesCyber SecurityFirewallsIoT
About the role
Key responsibilities & impact- Serve as the ICS/OT/IoT SME across internal teams, vendors, and stakeholders.
- Translate OT operational needs into IT/security requirements and support coordinated implementation.
- Perform vulnerability assessments and risk evaluations for OT/ICS/IoT hardware and software.
- Identify obsolescence, configuration gaps, and security weaknesses.
- Review and recommend improvements to administrative, technical, and cybersecurity controls.
- Review OT network architectures for segmentation, zoning, conduits, and DMZ design.
- Recommend improvements aligned with recognized cybersecurity frameworks.
- Coordinate with vendors and internal teams on OT system changes.
- Support PLCs, RTUs, HMIs, SCADA, BMS/BAS, and other control systems.
- Assist with upgrades, migrations, and modernization of OT environments.
- Maintain system documentation, diagrams, and inventories.
- Apply security controls and best practices for OT/ICS environments.
- Evaluate, design, and implement security solutions aligned with: NIST SP 800-82, ISA-99 / IEC 62443, Federal cybersecurity frameworks.
- Support vulnerability assessments and remediation for OT assets.
- Implement network segmentation and secure remote access.
- Support firewall rules, VLANs, and segmentation for OT networks.
- Monitor OT network traffic for anomalies or unauthorized activity.
- Maintain IP addressing, device inventories, and configuration records.
- Participate in incident investigations involving OT systems.
- Support troubleshooting, root cause analysis, and recovery efforts.
- Ensure minimal disruption to critical operational systems.
Requirements
What you’ll need- Hands-on experience with ICS/SCADA systems (PLCs, RTUs, HMIs, BMS/BAS).
- Strong understanding of OT cybersecurity frameworks such as NIST 800-82 and IEC 62443.
- Experience performing vulnerability assessments and identifying risks in OT/ICS environments.
- Experience with network segmentation, zoning, and secure architecture design.
- Ability to deploy or configure firewalls, IDS/IPS, CPS, and network devices.
- Ability to analyze logs, events, and packet captures to identify threats.
- Strong documentation skills (diagrams, procedures, implementation plans).
- Ability to work across engineering, IT, and cybersecurity teams.
Benefits
Comp & perks- Medical and Dental Insurance
- Paid Time Off/Holidays
- 401(k) Retirement Plans with Matching
- Remote Work
- Paid Training
- Employee Referral Program
- Employee Development Program
ATS Keywords
✓ Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
ICSSCADAPLCsRTUsHMIsBMSBASvulnerability assessmentsnetwork segmentationfirewall configuration
Soft Skills
documentation skillsanalytical skillscollaborationcommunication
Certifications
NIST SP 800-82IEC 62443