Senior Systems Engineer (Operational Technology Infrastructure)
Location: Moncks Corner, SC (100% Onsite)
Compensation: $105,000 - $155,000 Base Salary
Target Hiring Range: $120,000 - $135,000
About the Role
Our client is seeking two experienced Senior Systems Engineers to support critical infrastructure systems within a highly available Operational Technology (OT) environment.
Candidates must have experience supporting regulated infrastructure environments and be comfortable owning both technical execution and the audit evidence required to demonstrate compliance.This is a hands-on engineering role for experienced infrastructure professionals who enjoy broad technical ownership across servers, virtualization, cybersecurity, networking, backups, and operating systems. The team supports the technology infrastructure behind mission-critical operational systems and is responsible for ensuring reliability, security, availability, and regulatory compliance.
The ideal candidate is a well-rounded systems engineer who can independently troubleshoot complex issues, administer enterprise infrastructure, support cybersecurity initiatives, and mentor junior team members while operating within a structured and highly regulated environment.
What You'll Do
Infrastructure Engineering
- Administer and support VMware virtual infrastructure across multiple data center environments.
- Support Windows Server and Red Hat Enterprise Linux systems, including installation, configuration, patching, upgrades, and troubleshooting.
- Manage Active Directory, Group Policy, security groups, permissions, and identity services.
- Perform server administration, operating system maintenance, vulnerability remediation, and system hardening.
- Support enterprise backup and recovery operations.
- Monitor and maintain system availability, performance, and reliability.
- Troubleshoot complex infrastructure, application, operating system, and connectivity issues.
- Participate in technology refresh and infrastructure modernization initiatives.
Security & Operational Support
- Administer security tools and infrastructure supporting operational environments.
- Support endpoint security, malware prevention, system monitoring, and log management activities.
- Perform vulnerability assessments and remediation activities.
- Administer firewall policies and network security controls.
- Support incident response and root cause analysis efforts.
- Ensure compliance with established cybersecurity and operational procedures.
Networking & Platform Technologies
- Support routing, switching, firewalls, and enterprise connectivity.
- Troubleshoot TCP/IP communications, network segmentation, and network performance issues.
- Support critical 24x7 infrastructure used within operational environments.
- Assist with security baseline management and control validation.
Compliance & Regulatory Responsibilities
- Support NERC CIP compliance requirements within a regulated operational environment.
- Participate in audits, compliance reviews, self-assessments, and evidence requests.
- Collect, maintain, validate, and organize compliance evidence supporting operational and cybersecurity controls.
- Document backup verification, patch management, vulnerability remediation, access reviews, and system changes.
- Operate within established change management, cybersecurity, and operational procedures.
- Demonstrate a clear understanding of what was performed, why it was required, and how it satisfies applicable controls and standards.
Leadership & Collaboration
- Serve as a senior technical resource for infrastructure and operational support teams.
- Mentor less-experienced engineers and administrators.
- Work independently while collaborating across engineering, cybersecurity, compliance, and operations teams.
- Participate in planning, maintenance activities, and continuous improvement initiatives.
Required Qualifications
- Bachelor's degree in Computer Science, Information Technology, Computer Engineering, or equivalent combination of education and experience.
- 5+ years of Systems Engineering, Infrastructure Engineering, or Senior Systems Administration experience.
- Experience supporting regulated environments with direct responsibility for compliance, audit support, controls validation, and evidence collection.
- Working knowledge of NERC CIP requirements and associated operational practices.
- Familiarity with NIST Cybersecurity Framework (CSF) principles and their application in operational environments.
- Strong experience administering:
- VMware ESXi
- Windows Server
- Red Hat Enterprise Linux
- Active Directory
- Enterprise backup solutions
- Security monitoring and vulnerability management tools
- Experience supporting highly available infrastructure environments.
- Strong troubleshooting, root-cause analysis, and operational support skills.
- Ability to independently own technical tasks from implementation through audit-ready documentation.
- Ability to work onsite in Moncks Corner, South Carolina.
Preferred Qualifications
- Electric utility, power generation, transmission, energy management systems, or other critical infrastructure experience.
- Check Point Firewall administration, including policy management, routing, and log monitoring.
- VMware administration and support.
- Veeam Backup & Replication.
- Nessus vulnerability management and assessment tools.
- Tripwire Enterprise and Tripwire Log Center.
- WSUS patch management.
- Symantec Endpoint Protection.
- MikroTik switches and routers.
- ICCP (Inter-Control Center Communications Protocol) familiarity.
- Experience supporting operational technology (OT), ICS, SCADA, or mission-critical operational environments.
- CISSP, GSEC, GCIP, VMware, Microsoft, Red Hat, or related certifications.
What Makes Someone Successful
We're looking for engineers who:
- Take ownership from problem identification through resolution.
- Can administer Windows, Linux, virtualization, networking, backup, and security technologies with minimal oversight.
- Understand the discipline required in highly regulated environments.
- Know how to produce and maintain audit-ready evidence supporting operational and cybersecurity controls.
- Balance infrastructure support, cybersecurity responsibilities, and compliance requirements.
- Learn new technologies quickly and share knowledge with teammates.
- Have the judgment and technical depth to support critical systems where reliability and security are essential.