OT Field Engineer – Telemetry & Site Communications

Our Client:

• Our client is a national utility responsible for critical water and wastewater infrastructure across the Greater Dublin Area. They are currently delivering a major telemetry and communications upgrade programme across their operational site estate and need an experienced OT Field Engineer to support delivery on the ground.

What's Involved:

• This is a hands-on field role focused on telemetry and communications remediation across live water and wastewater sites. You'll be replacing legacy PSTN and GSM comms with modern IP-based 4G solutions, and supporting the commissioning of replacement telemetry outstations. Day to day, that means:
• Surveying legacy RTU sites to assess comms arrangements, modem type, serial interfaces, panel space and antenna requirements
• Installing and commissioning serial-to-Ethernet converters and 4G industrial routers at pilot sites
  Configuring converter and router settings to interface with legacy RTUs, liaising with client networking teams on SCADA-side changes
• Running end-to-end comms testing - telemetry, alarms, polling performance, power-cycle recovery and failover
• Supporting installation of IP-based telemetry outstations, including Marshalling PLC panel wiring, LAN cabling and Modbus TCP/IP signal verification against signed-off signal lists
• Supporting cutover and decommissioning of legacy equipment in coordination with client teams
• Working within a Permit to Work system throughout, and producing survey reports, commissioning records and handover documentation

What You Need:

• 3-5 years of experience in a similar role
• Full, clean Irish drivers’ license
• Hands-on OT or industrial telemetry field engineering experience in water, wastewater, gas, power or similar critical infrastructure - this is not an IT or service desk role
• Practical experience with legacy RTU or telemetry equipment
• Working knowledge of serial communications - RS232, RS485, modem configuration and serial-to-Ethernet conversion
• Experience commissioning 4G industrial routers (e.g. Westermo Merlin, Robustel or similar)
• Understanding of Modbus TCP/IP and industrial networking protocols
• Comfortable working on live operational sites under a Permit to Work system
• Full working rights to work in Ireland (EU citizenship, stamp 4 visa etc.)

What's on Offer:

• €450 per day
• 3-month initial contract with strong potential to extend
• Field-based role across sites in the Greater Dublin Area