Instrumentation Engineer

Position Overview

The Instrumentation Engineer is responsible for the selection, specification, and engineering support of process instrumentation and field devices across oil and gas facilities. This role ensures that all process measurements (temperature, pressure, flow, level, and analytical) are accurate, reliable, and suitable for the operating environment, directly impacting process control performance and safety system integrity.

Key Responsibilities

• Select and specify process instrumentation including transmitters, converters, analysers, and final control elements in accordance with process requirements
• Develop instrumentation data sheets, wiring diagrams, and hook-up drawings
• Design instrument air systems and calculate instrument air consumption for the facility
• Specify and size control valves and pressure relief valves per API/ISA standards
• Perform instrument index development and I/O count management for DCS/SIS integration
• Conduct hazardous area classification and specify instruments with appropriate ATEX/IECEx certifications
• Support factory acceptance testing (FAT) and site acceptance testing (SAT) of instrumentation packages
• Review vendor documentation including instrument data sheets, material certificates, and calibration records
• Participate in HAZOP, SIL classification, and instrument design review workshops
• Provide technical support during construction, pre-commissioning, and commissioning phases
• Evaluate new instrumentation technologies including wireless (ISA 100.11a / WirelessHART) and digital twin integration

Qualifications

Required

• Education: Bachelor's degree in Instrumentation Engineering, Electrical Engineering, or related discipline
• Certifications: CompEx (Ex01-Ex04 preferred); OPITO BOSIET/FOET for offshore visits
• Experience: Minimum 5 years in instrumentation engineering within oil and gas, petrochemical, or related process industries
• Technical Skills: Process instrumentation selection and specification, control valve sizing (ISA/IEC standards), hazardous area classification (ATEX/IECEx/NFPA 497), instrument wiring and marshalling, HART/Foundation Fieldbus protocols, SIL classification and verification

Preferred

• Experience with smart/digital instrumentation and IIoT integration
• Familiarity with multiphase metering and virtual flow measurement
• Safety Instrumented Function (SIF) design experience
• Experience with INtools / SmartPlant Instrumentation (SPI)