Job Description Roles & Responsibilities Lead and perform instrumentation design activities for FEED and DD phases. Prepare and review: Instrument Index and Datasheets, P&IDs (instrumentation scope), Control Philosophy / Functional Design Specifications, Cause & Effect Diagrams, Loop Diagrams, Wiring Diagrams, Instrument Hook-ups and Installation Drawings Ensure design compliance with ADNOC Onshore standards and project specifications. Design and specify: Distributed Control Systems (DCS), Emergency Shutdown Systems (ESD), Safety Instrumented Systems (SIS), Fire & Gas Systems (FGS) Participate in SIL classification and verification as per IEC 61508 / 61511. Define control strategies and system architecture. Prepare Material Requisitions (MR) and Technical Bid Evaluations (TBE). Review vendor documents for instrumentation-related packages. Ensure vendor compliance with project requirements and client standards. Coordinate with Process, Electrical, Mechanical, and Piping disciplines. Interface with client (CPE) and ADNOC stakeholders for design approvals. Support and participate in: HAZOP / HAZID, SIL studies, Design review meetings Ensure timely delivery of FEED and DD deliverables. Maintain engineering quality, consistency, and documentation control. Support project audits and design reviews. Provide clarification to site queries during construction. Support pre-commissioning and commissioning activities when required.