Senior Instrumentation Commissioning Technician

Theme Blog Studio; Abu Dhabi; On-site; AED 240,000 - 380,000; Full time

Job summary

HUMAN-AI-Z Nexus Technology in Abu Dhabi is seeking a Senior Instrumentation Commissioning Technician to lead field execution teams in calibration, loop checks, valve testing, and interface verification across DCS, ESD, and F&G systems. The role operates within an Oil & Gas EPC project environment, ensuring field instrumentation and shutdown logic are tested and ready for safe plant start-up.

Strong hands-on experience and certifications are preferred.

Qualifications

• Diploma in Instrumentation, Control, or Electronics Engineering.
• 8+ years of hands-on pre-commissioning, loop checking, and commissioning in Oil & Gas.
• Experience with DCS (Emerson, Honeywell, Yokogawa, ABB) and ESD/F&G interfaces.
• Certifications such as CompEx or Functional Safety Technician preferred.

Responsibilities

• Lead instrument calibration, field testing, and valve diagnostics across DCS/ESD/F&G.
• Perform loop checks from field devices to control room displays.
• Conduct interface testing between field instruments and DCS/ESD/F&G panels.
• Support start-up and test dossiers, PTW compliant field isolations.

Skills

Instrument calibration

Field testing

Loop checking

Valve testing

DCS interface testing

Education

Diploma in Instrumentation/Control/Electronics

Tools

HART communicators

Signal calibrators

Fieldbus protocols

P&ID knowledge

Job description

Job Purpose

The Senior Instrumentation Commissioning Technician leads field execution teams in instrument calibration, loop checking, control valve testing, and multi-system interface verification across DCS, ESD, and F&G systems. Operating within an Oil & Gas EPC project environment, this role ensures field instrumentation, shutdown logic, and final control elements are fully tested, functional, and ready for safe plant start-up.

Key Responsibilities & Core Scope

• Instrument Calibration & Field Testing

  • Perform bench and field calibration, testing, and troubleshooting of pressure, temperature, level, flow, and analytical instruments using HART communicators and signal calibrators.
  • Inspect, test, and commission control valves, motorized valves (MOVs), emergency shutdown valves (ESDVs), positioners, and stroke test actuators.

• Loop Checking & Commissioning Execution

  • Execute cold and hot loop checks from field transmitters, switches, and junction boxes to control room displays.
  • Troubleshoot signal integrity issues, ground loops, impulse lines, and fieldbus communication protocols during commissioning execution.

• DCS / ESD / F&G Interface Testing

  • Perform interface verification and signal testing between field instrumentation and Distributed Control Systems (DCS), Emergency Shutdown (ESD) systems, and Fire & Gas (F&G) protection panels.
  • Assist in functional testing of Cause & Effect (C&E) matrices, trip logic, interlocks, and alarm safety limits.

• Functional Testing & Start-Up Support

  • Conduct full functional testing of instrument packages and automated loops prior to dynamic testing.
  • Provide hands‑on instrument support during initial plant start-up, fluid introduction, and performance runs.
  • Execute field isolations under Permit-to-Work (PTW) protocols, clear instrument punch lists, and maintain complete test dossiers in the System Completion Database (SCDB).

Desired Candidate Profile

• Education: Diploma, in Instrumentation, Control, or Electronics Engineering.
• Experience:
  • 8+ years of hands‑on pre‑commissioning, loop checking, and commissioning experience strictly within the Oil & Gas sector (Onshore/Offshore EPC projects, Refineries, or Gas Plants).
  • Demonstrated experience with DCS (Emerson, Honeywell, Yokogawa, ABB), ESD/SIS logic, and F&G detector loops.
  • Proven track record in control valve diagnostic testing, field transmitter calibration, and active participation in initial plant start‑up.
• Certifications (Preferred):
  • CompEx (Ex01–Ex04) certification for hazardous locations / explosion protection.
  • Functional Safety Technician (TÜV Rheinland or equivalent) or specialized vendor certification.