OT Infrastructure Engineer - Southeast

Inframark; North Charleston (SC); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Life insurance

401(k)

Paid time off

Sick leave

Holidays

Wellness plan

Job summary

Inframark is seeking an Operational Technology Infrastructure Engineer to design, deploy, and support secure OT infrastructure for water and wastewater systems. You will work closely with project teams, field personnel, and cybersecurity resources to deliver reliable OT platforms including SCADA, HMI, PLC, and remote connectivity.

The role emphasizes Windows server/workstation administration, industrial networking, firewall configuration, and cybersecurity hardening, with opportunities to

Qualifications

• Bachelor's degree in Information Technology, Cybersecurity, Computer Science, Engineering, or a related field preferred; equivalent experience may be considered.
• 5+ years of experience supporting information technology, operational technology, industrial network, or utility environments.
• Experience deploying, administering, and supporting server, workstation, network, and virtualization technologies.
• Experience supporting customer facing projects, field deployments, and operational support activities.
• Water, wastewater, industrial, SCADA, or critical infrastructure experience preferred.

Responsibilities

• Install, configure, maintain Windows Server and Workstation in OT environments.
• Manage Microsoft Active Directory, DNS, DHCP, Group Policy and related services.
• Install, configure, and support virtualization platforms including VMware ESXi, vSphere, and Hyper-V.
• Design, deploy, support, and troubleshoot industrial network infrastructure including routing, switching, firewalls, VPNs, wireless, and cellular comms.
• Design, deploy, support, and migrate secure remote access solutions including IPsec VPNs and approved platforms.
• Support SCADA, HMI, PLC, alarming, telemetry, and OT system communications.
• Provide remote site connectivity solutions and associated connectivity platforms.
• Provide input for infrastructure design, hardware selection, project estimates, customer solutions.
• Implement cybersecurity controls including hardening, vulnerability remediation, endpoint protection, certificate management, secure remote access.
• Provide remote and onsite support for OT infrastructure environments.
• Support startup, commissioning, warranty, managed services, and incident response activities.
• Perform troubleshooting and root cause analysis for infrastructure and OT issues.
• Train customers and internal personnel on supported technologies and security best practices.

Skills

Windows Server

Active Directory

Industrial Networking

OT Cybersecurity

VMware/Hyper-V

Remote Access

Firewall Configuration

SCADA/HMI/PLC

Documentation

Network Security

Education

Bachelor's degree in IT/related field

5+ years IT/OT/utility experience

Tools

VMware ESXi

vSphere

Hyper-V

Fortinet

Cisco

Sierra Wireless

SQL Server

MySQL

FortiNAC

Microsoft 365

Job description

Join Inframark: Pioneering Automation and Intelligence

Step into the future with Inframark's award-winning Automation and Intelligence team. We deliver cutting-edge solutions in instrumentation and controls, industrial cybersecurity, data analysis, and remote network operations center services for water and wastewater plants. Elevate your career and join us at Inframark.

Why Work for Inframark?

Our dedication to sustainability and community impact drives us to ensure clean, safe water for future generations. Whether you're at the start of your career or looking for advancement, Inframark offers purpose-driven work and opportunities for growth. We offer an attractive salary package, including a generous benefits package with health, dental, and life insurance, 401(k) plan, paid time off, sick leave, holidays, and wellness plan.

OPERATIONAL TECHNOLOGY INFRASTRUCTURE ENGINEER

JOB FUNCTION/ PURPOSE

The OT Infrastructure Engineer serves as a hands on technical resource responsible for the design, deployment, administration, support, and standardization of secure Operational Technology (OT) infrastructure environments supporting water, wastewater, and other critical infrastructure systems. This role works closely with project teams, field personnel, customers, and cybersecurity resources to deliver reliable OT systems that support utility and industrial operations. Responsibilities include Windows server and workstation administration, industrial network design, firewall configuration, remote access technologies, virtualization platforms, SCADA, HMI, PLC, and operational technology system connectivity, cybersecurity hardening, communications infrastructure, and lifecycle management.

Responsibilities

• Install, configure, maintain, patch, upgrade, and secure Windows Server and Workstation operating systems supporting OT environments.
• Configure and support Microsoft Active Directory, DNS, DHCP, Group Policy, and related infrastructure services.
• Install, configure, and support virtualization platforms including VMware ESXi, vSphere, and Hyper-V.
• Design, deploy, support, and troubleshoot industrial network infrastructure, including switching, routing, firewalls, VPNs, wireless, and cellular communications.
• Design, deploy, support, and migrate secure remote access solutions, including IPsec VPN technologies, BeyondTrust, and approved remote connectivity platforms.
• Support SCADA, HMI, PLC, alarming, telemetry, and operational technology system communications and connectivity.
• Configure and support remote site communications technologies, including cellular modems, Sierra Wireless devices, enterprise text messaging services, and associated connectivity platforms.
• Provide technical input for infrastructure design, hardware selection, project estimates, and customer solutions.
• Evaluate and implement technologies that improve system reliability, maintainability, operational performance, and cybersecurity.
• Develop and maintain network diagrams, configuration standards, installation documentation, and support procedures.
• Implement and support cybersecurity controls including system hardening, vulnerability remediation, endpoint protection, certificate management, and secure remote access technologies.
• Provide remote and onsite support for customer OT infrastructure environments.
• Support startup, commissioning, warranty, managed services, and incident response activities.
• Perform troubleshooting and root cause analysis for infrastructure, communications, and system issues.
• Train customers, operators, and internal personnel on supported technologies, support processes, and security best practices.
• Support server, workstation, networking, firewall, and remote access standardization efforts across customer environments.

EDUCATION And EXPERIENCE

• Bachelor's degree in Information Technology, Cybersecurity, Computer Science, Engineering, or a related field preferred; equivalent experience may be considered.
• 5+ years of experience supporting information technology, operational technology, industrial network, or utility environments.
• Experience deploying, administering, and supporting server, workstation, network, and virtualization technologies.
• Experience supporting customer facing projects, field deployments, and operational support activities.
• Water, wastewater, industrial, SCADA, or critical infrastructure experience preferred.

KNOWLEDGE, SKILLS, And ABILITIES

• Strong knowledge of Windows Server, Windows Workstation, Active Directory, DNS, DHCP, Group Policy, patch management, system hardening, and Microsoft infrastructure services.
• Strong knowledge of virtualization, backup, and recovery technologies, including VMware ESXi, vSphere, Hyper-V, Veeam, Synology, and related infrastructure platforms.
• Strong understanding of industrial and enterprise networking concepts including routing, switching, VLANs, VPNs, firewall policies, wireless networking, cellular communications, network security, and secure remote access technologies.
• Working knowledge of industrial networking and security platforms, including Fortinet Firewalls, FortiSwitch, FortiAP, FortiExtender, FortiSIEM, FortiNAC, Cisco, Allen-Bradley Stratix, Hirschmann, Siemens, and similar technologies.
• Ability to design, deploy, maintain, support, and troubleshoot industrial network infrastructure, remote access solutions, firewall architectures, and secure connectivity environments.
• Working knowledge of operational technology (OT), SCADA, HMI, PLC, industrial automation systems, industrial communications, telemetry systems, alarming platforms, remote access technologies, and remote site connectivity solutions.
• Understanding of OT cybersecurity principles, including system hardening, vulnerability remediation, endpoint protection, certificate management, network segmentation, secure remote access, and defense-in-depth architectures.
• Working knowledge of cybersecurity frameworks and industry best practices applicable to utility and industrial environments, including NIST CSF, ISA/IEC 62443, AWWA guidance, and EPA cybersecurity recommendations.
• Ability to develop and maintain technical documentation, network diagrams, configuration standards, installation records, and operational procedures.
• Strong analytical, troubleshooting, and root cause analysis skills across servers, workstations, network infrastructure, virtualization platforms, communications systems, and OT environments.
• Ability to support customer-facing projects, managed services, field operations, and utility infrastructure environments.
• Ability to support startup, commissioning, maintenance, incident response, and operational activities in utility and industrial environments.
• Strong verbal and written communication skills with the ability to effectively interact with customers, vendors, project teams, and operational personnel.
• Ability to manage multiple priorities and projects while working independently and collaboratively across technical and operational teams.
• Industry certifications such as Microsoft Windows Server Administrator, Microsoft Azure Administrator, Fortinet NSE, Cisco CCNA/CCNP, VMware VCP, ISA/IEC 62443 Cybersecurity Certificate, CompTIA Network+, CompTIA Security+, CISSP, Rockwell Automation, Siemens, Hirschmann, or equivalent technical certifications are preferred.
• Familiarity with operational support platforms and services including Microsoft 365, Rackspace, enterprise messaging services, and communication technologies used for SCADA alarm and operational notification systems.
• Familiarity with database technologies commonly used in OT environments, including Microsoft SQL Server, MySQL, PostgreSQL, and related platforms.

PHYSICAL DEMANDS

• Ability to sit, stand, and work at a computer for extended periods.
• Ability to lift and move computer, networking, and related technology equipment as needed.
• Ability to travel to and work at customer facilities, including indoor and outdoor utility, industrial, and critical infrastructure environments.
• Ability to travel up to 25% to support customer projects, commissioning, troubleshooting, training, and operational support activities.

Reasonable accommodations may be made to enable individuals with disabilities to perform the essential job functions.

An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

To support a safe and secure workplace, all offers of employment are contingent upon the successful completion of background screening, drug testing, and driving record review where applicable.

Inframark is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against based on disability.

Learn more about us at Automation and Intelligence - Inframark