Network Systems Engineer IT/OT SCADA Edit listing

Requirements
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### Must have:

### - Bachelors degree in Electrical Engineering, Computer Engineering, Computer Science, Information Technology, or a closely related discipline; equivalent hands-on experience may substitute for a degree. - At least 5 years of experience designing, integrating, and supporting industrial or mission-critical communication networks. - Practical experience with Layer 3 switching, VLAN segmentation, and routed network architectures. - Background supporting SCADA, telemetry, or OT network environments. - Strong understanding of industrial network topologies, redundancy models, and Layer 2/Layer 3 Ethernet switching. - Proficiency in TCP/IP and UDP networking principles, as well as IP and serial communications. - Working knowledge of virtualization and hypervisor platforms such as VMware, Hyper-V, or Proxmox. - Familiarity with RF communications fundamentals, propagation, firewalls, VPNs, and secure gateways. - Experience in water/wastewater, utilities, energy, or other critical infrastructure environments is preferred. - Familiarity with industrial networking vendors such as Cisco, Ruggedcom, Hirschmann, Moxa, Fortinet, Stratix, or similar is preferred. - Experience with RF propagation modeling tools is preferred. - Knowledge of OT cybersecurity standards and regulatory requirements is preferred. - Relevant certifications such as CCNA, CCNP, Network+, Security+, radio, virtualization, or industrial networking credentials are preferred. - Strong analytical and troubleshooting skills across wired, wireless, and serial networks. - Ability to convert operational needs into secure, reliable network designs and engineering solutions. - Detail-oriented mindset with a focus on availability, performance, and cybersecurity. - Effective written and verbal communication skills, with the ability to collaborate across engineering, operations, and field teams. - Ability to work independently, as part of a multidisciplinary team, and with professionalism and discretion. - Strong prioritization and time-management skills in a fast-paced environment. - Proficiency with Microsoft Office and common business collaboration tools. - Valid California Drivers License.

Responsibilities:
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- Design, integrate, configure, test, commission, and support industrial communication networks and telemetry systems for SCADA and OT environments. - Apply application engineering judgment to align network solutions with customer goals, system requirements, performance targets, and environmental constraints. - Review existing network and telemetry systems and recommend enhancements or upgrades. - Integrate and support industrial network devices such as Ethernet switches, routers, firewalls, VPN appliances, secure gateways, radio transceivers, cellular modems, and telemetry equipment. - Configure and maintain network infrastructure in line with internal standards and cybersecurity best practices. - Assist with equipment deployment, on-site setup, and troubleshooting. - Design resilient industrial network topologies that support redundancy, reliability, and deterministic communications. - Configure Layer 3 switching for VLAN segmentation, inter-VLAN routing, traffic isolation, and access control. - Develop IP addressing, subnetting, and routing strategies suitable for OT environments. - Support secure IT/OT separation through firewalls, DMZ designs, and VPN technologies. - Ensure proper integration of server rack infrastructure and network interconnection interfaces according to project, safety, and documentation standards. - Establish physical and logical interconnections between devices to support core network architecture and defined topologies. - Align rack and infrastructure builds with cybersecurity, maintainability, and operational best practices. - Configure and help deploy terminals, engineering workstations, servers, and other computing hardware used in SCADA and OT environments. - Install hypervisors on physical hardware to enable secure virtualized implementations. - Deploy and prepare operating systems for use by internal automation teams. - Collaborate with automation, controls, and IT teams to support SCADA application development, testing, and deployment. - Engineer and support distributed telemetry networks using wired and wireless communication paths. - Conduct radio feasibility studies and RF assessments, including analysis of signal strength, interference, latency, throughput, and reliability. - Apply RF propagation principles to evaluate, design, and troubleshoot wireless links. - Coordinate licensed and unlicensed radio systems and cellular communication paths. - Support IP-based and serial communication interfaces, including TCP/IP, UDP, Ethernet, and RS-232, RS-485, and RS-422. - Configure and troubleshoot industrial communication protocols such as DNP3, Ethernet/IP, Modbus TCP/RTU, and IEC 60870-5-104 or comparable protocols. - Use diagnostic and monitoring tools such as SNMP and packet capture utilities like Wireshark to resolve network and telemetry issues. - Ensure dependable end-to-end communication between field devices and control systems. - Apply cybersecurity best practices, including segmentation, least-privilege access, secure configurations, credential management, encrypted communications, and VPNs. - Support compliance with standards and frameworks such as NIST, IEC 62443, and NERC CIP. - Work with IT and cybersecurity teams to identify risks and implement mitigation measures. - Develop and execute FAT and SAT for network and telemetry systems. - Support commissioning activities in substations, plants, control centers, and remote field sites. - Provide Tier II/Tier III troubleshooting and operational support for network and telemetry incidents. - Maintain accurate network diagrams, configuration records, and technical documentation. - Provide technical guidance and mentoring to engineers and technicians. - Support customer and internal training on site as needed. - Continue learning to stay current with emerging technologies. - Collaborate with internal teams, customers, and vendors throughout the project lifecycle.
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Company:
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We are seeking a Network Systems Engineer focused on IT/OT and SCADA communication infrastructure to support mission-critical operations across plants, substations, control centers, and remote field locations. In this role, our team works closely with engineering, operations, application programmers, cybersecurity specialists, and field personnel to deliver secure, reliable, high-availability communication and computing solutions. The position offers a mix of office and industrial facility work, with opportunities to contribute across network design, integration, testing, commissioning, troubleshooting, documentation, and training in a fast-paced environment.
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