Senior Principal Instrumentation Designer

Job Description - Senior Principal Instrumentation Designer (BAT
00HO
)

Company :
Worley

Instrumentation and Controls

Full-time

Employment Type

:
Employee

Sep 14, 2026

Reporting Manager Title :
Department Manager Instrumentation Engineering

About us

Worley is a global company of energy, chemicals and resources experts headquartered in Australia. We partner with our customers to deliver projects and create value across the life of their assets. We specialize in consulting, engineering, procurement and construction across the project lifecycle, with services extending through to operations and decommissioning. Leveraging extensive experience and AI-enabled delivery, we support customers in navigating complexity as they meet today's needs and transition to more sustainable solutions.

Purpose:

Lead the instrumentation design team on assigned projects or project phases, providing technical direction, work planning, and design coordination from concept through construction support.

Responsibilities:

• Develop, review, and check instrumentation deliverables including instrument location plans, installation details, loop diagrams, wiring and termination diagrams, junction box schedules, I/O lists, panel layouts, cable tray/conduit routing, and construction work packages.
• Ensure discipline deliverables meet technical quality, accuracy, safety, constructability, client specifications, Worley standards, and applicable industry codes and practices.
• Coordinate closely with engineering, project management, piping, electrical, civil/structural, process, procurement, vendors, clients, and workshare teams to support integrated project delivery.
• Perform discipline administrative responsibilities including developing and monitoring manpower plans, schedules, budgets, progress reporting, design requirements, drafting data, and workshare packages.
• Provide design sketches, technical guidance, and practical design solutions for drawing and model preparation by designers and CAD technicians.
• Review and resolve 3D model interferences and clashes related to instrument locations, supports, cable tray, conduit routing, equipment access, and discipline interfaces.
• Check work prepared by lower-level designers and CAD technicians for compliance with project requirements, customer standards, Worley procedures, and discipline best practices.
• Mentor and support the development of junior designers and CAD technicians, including providing technical coaching and input on performance and development needs.
• Plan and conduct field investigations, site walkdowns, data gathering, and as-built verification at customer facilities as required.

What you will bring

Technical/Industry Experience and Qualifications Requirements:

• Typically 12+ years of instrumentation design experience, preferably supporting oil and gas, refining, chemical, petrochemical, energy, or heavy industrial projects.
• Strong experience leading instrumentation design work on complex multi-discipline projects, including coordination of design teams, schedules, budgets, and deliverables.
• Proficiency with AutoCAD and Smart Plant Instrumentation/SPI is required; experience with Micro Station and 3D modeling tools such as Smart 3D, E3D, PDMS, or Navisworks is preferred.
• Working knowledge of instrumentation design deliverables, industry codes and standards, construction practices, field verification, and plant safety requirements.
• Experience with instrument indexes, I/O lists, loop drawings, wiring diagrams, junction box schedules, instrument installation details, material take-offs, and construction packages.
• Strong communication, organization, problem-solving, and collaboration skills with the ability to interface effectively with clients, project teams,…