Senior Mechanical Supervisor - Karratha

Position Information

Ref #

300050208

Region

Karratha, WA

Classification

Trades Supervision

Date Posted

26-Jun-2026

Description & Requirements

Monadelphous Mining and Minerals North West is seeking an experienced Senior Mechanical Supervisor to support our Coastal Operations Core Crew. This is an exciting opportunity to join our Marine Structural Integrity project on Rio Tinto's CLA Wharf as a crucial member of the team. This project is dedicated to the remediation of corrosion to the wharf through blast & paining and welding disciplines. The successful candidate will be responsible for supervising all mechanical and welding activities through supporting the crew, ensuring all mechanical works are completed safely and to the highest standard whilst in alignment with project requirements. This is a casual position on a 2:1 roster, FIFO from Perth to Karratha. We encourage First nations people and female applicants to apply.

Working with Monadelphous offers many benefits, some of which include:

• Immediate start with longevity of project work
• Access to Monadelphous company perks, such as exclusive discounts and event tickets
• Dedicated on the job coaching and mentorship programs
• Access to internal opportunities within the business following contract completion for the right candidate

Key Responsibilities:

• Supervise and support mechanical and welding crews working on the wharf
• Ensure welds are compliant with design, safety standards, and site requirements
• Coordinate closely with other disciplines to enable efficient execution of remediation works
• Act as the primary point of contact for our mechanical, providing leadership and direction
• Upholding our core value 'The Safe Way is the Only Way'

What you’ll bring:

• 2–5 years’ supervisory experience in mechanical (fitting and boilermaking) within mining or heavy industry
• Relevant Australian Qualified Trade Certificate
• Strong understanding of all welding methods and inspection requirements
• Experience working on marine or coastal projects (desirable)
• Familiarity with Rio Tinto systems and procedures (desirable)
• Strong commitment to safety, quality, and delivery outcomes
• Valid right to work in Australia

Life at Monadelphous
There’s lots to get involved in, celebratory or cultural events and so much more. We work hard to make Monadelphous a truly great place to work.

We celebrate our diversity and shared values and are committed to inclusion and equal opportunities for all. We’re committed to hiring locally, encourage people of all diverse backgrounds to apply and strongly encourage women and First Nations people to submit an application

About us
Monadelphous is an ASX-200 company providing multidisciplinary construction, maintenance and industrial services to many of the largest companies in the resources, energy and infrastructure sectors. Established in 1972, we’ve been working in Australia and around the world for more than 50 years. We work on the biggest projects and ensure our teams have a variety of opportunities available to follow their career path of choice.

Our Maintenance and Industrial Services division specialises in providing comprehensive, multidisciplinary maintenance and improvement solutions for customers across Australia and internationally, through a network of supporting workshops and operations in key regional areas, within the resources, energy and industrial sectors. Our expertise encompasses a wide range of services including the planning, management and execution of mechanical and electrical maintenance services, shutdowns, civil and infrastructure works, fixed plant maintenance services, access solutions, specialist coatings and rail maintenance services.

We have been part of the local community for over 35 years, proud to be providing jobs for the local region in civil, structural, mechanical and electrical capital projects, maintenance and industrial services.

Safety is at the forefront of everything we do, and we live by our promise: The Safe Way is the Only Way. Apply now to get started. A career at Monadelphous is a career with a difference. Make it yours.