Network Architect – Power Plant IT/OT Migration

DHANU GLOBAL ENTERPRISES, INC.; Miami (FL); On-site; USD 120,000 - 180,000; Part time

Job summary

DHANU GLOBAL ENTERPRISES, INC. is seeking a senior Network Architect to design and migrate Power Plant IT/OT networks in Miami on a long-term onsite contract.

The role requires extensive experience in enterprise networking, DCS/SCADA integration, and security across IT/OT boundaries. You will drive migration planning, high-availability design, and cutover execution while coordinating with control system engineers to ensure seamless operation and compliance with Purdue Model and ISA/IEC 62443

Qualifications

• 12+ years of experience in Network Architecture and infrastructure transformation.
• Proven experience in end-to-end Power Plant IT/OT network migration projects.
• Hands-on experience with DCS, SCADA, PLC, HMI, Historians, and Industrial Control Systems.
• Expertise in Cisco Routing & Switching, VLANs, VRFs, BGP, OSPF, and high-availability architecture.
• Knowledge of IT/OT network segmentation, DMZ/IDMZ, Purdue Model, and ISA/IEC 62443.
• Experience with Palo Alto, Cisco Firepower/ASA firewalls, VPN, NAT, and firewall policy migration.
• Knowledge of industrial protocols including Modbus TCP, DNP3, OPC, and OPC UA.

Responsibilities

• Design and migrate Power Plant IT/OT network infrastructure.
• Lead end-to-end migration planning, cutover, and hypercare.
• Ensure security and compliance per Purdue/ISA/IEC 62443 guidelines.
• Collaborate with DCS/SCADA teams to optimize network performance.

Skills

Network Architecture

Enterprise Networking

Power Plant IT/OT migration

DCS/SCADA/ICS

Cisco Routing

VLANs

VRFs

BGP

OSPF

IT/OT Segmentation

Purdue Model

ISA/IEC 62443

Palo Alto

Firewalls

VPN/NAT

OPC UA

DNP3

Modbus TCP

LAN/WAN

SD-WAN

MPLS

Cisco ISE

Network Security

Migration Planning

Cutover

Hypercare

Tools

Cisco Routing & Switching

Palo Alto

Cisco Firepower/ASA

Cisco ISE

Job description

Job Id : OOJ - 2142

Posted Date : 11/10/2026

Experience : 12-25

Job Type : Contractual

Location : Miami, FL

Overview

Job Title: Network Architect – Power Plant IT/OT Migration Location: Maimi, FL (onsite)Duration: Long term contract with 2+ years Mandatory: Proven experience in end-to-end Power Plant / Power Generation IT/OT network migration projects. Required skills:

• 12+ years of experience in Network Architecture, Enterprise Networking, and Infrastructure Transformation.
• Strong experience in designing and migrating Power Plant IT/OT network infrastructure.
• Hands-on experience with DCS, SCADA, PLC, HMI, Historians, and Industrial Control Systems.
• Expertise in Cisco Routing & Switching, VLANs, VRFs, BGP, OSPF, and high-availability architecture.
• Strong knowledge of IT/OT network segmentation, DMZ/IDMZ, Purdue Model, and ISA/IEC 62443.
• Experience with Palo Alto, Cisco Firepower/ASA firewalls, VPN, NAT, and firewall policy migration.
• Knowledge of industrial protocols including Modbus TCP, DNP3, OPC, and OPC UA.
• Experience in LAN/WAN, SD-WAN, MPLS, wireless networking, Cisco ISE, and network security.
• Expertise in network discovery, HLD/LLD, migration planning, cutover, rollback, and hypercare.

Skills :