OT LAN Engineer

Post Date

Aug 25, 2023

Location

Cincinnati,
Ohio

ZIP/Postal Code

45246
US
Jul 08, 2025 Insight Global

Job Type

Contract

Category

Network Engineer

Req #

CIN-646722

Pay Rate

$52 - $78 (hourly estimate)

Job Description

An employer is seeking a remote OT Network Architect for a 12+ month contract possible extensions opportunity. This individual will be a dedicated resource for a large automotive client responsible for network infrastructure discovery, design, implementation, and handoff to operations for network build projects. Also responsible for working and communicating with project managers on project status and timelines.

* Design and implement network security solutions using Palo Alto, Zscaler, and industrial switching devices.

* Build and configure a 3-tiered DMZ based on the Purdue reference model, with Zscaler as a reverse proxy.

* Utilize Firewalls (Palo Alto) to ensure secure traffic flow within the network infrastructure.

* Complete understanding of EIGRP / BGP / OSPF and managing routing in an enterprise environment



Essential Functions:

* 15% - Network Discovery

* 50% - Network Implementation and handover to Operational Support

* 20% - Update/Author Documentation of implemented solutions

* 15% - Work with project managers for tasks/updates related to project activities

Required Skills & Experience

5+ years of network engineering experience -- network analysis, management, performance monitoring, planning implementations, building test plans, and cisco design in an enterprise environment

Manufacturing/ Operational Technical industry experience

* Experience with industrial switching devices and their configuration for secure OT traffic flow required

Experience with OT protocols (e.g., Modbus, DNP3) and OT-specific security standards (e.g., IEC 62443)

Strong proficiency in Palo Alto and Zscaler technologies, including designing, implementing, and troubleshooting solutions

In-depth knowledge of building and managing a 3-tiered DMZ based on the Purdue reference model

Nice to Have Skills & Experience

CCNP and CCDP, CISSP, CCIE Written or CCIE, preferred

Preferable expert knowledge of infrastructure cabling (Cat5e, Cat6, MM / SM / OM3 fiber) and corresponding transceivers (SFPs, GBICs, etc.)

Benefit packages for this role will start on the 31st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.