Mechanical Field Supervisor

• Supervise Non Process Mechanical maintenance activities across WesCEF
• Enjoy long-term career development with WesCEF, including competitive remuneration, share allocations, and access to diverse opportunities across the Wesfarmers Group
• Permanent, full-time role based in Kwinana

WesCEF

Wesfarmers Chemicals, Energy & Fertilisers (WesCEF) is a division of Wesfarmers Limited and has been operating in Western Australia for more than 110 years. Our eight businesses manufacture and supply essential products to over 225,000 customers in 26 countries, supporting key sectors including agriculture, mining, energy, construction and households.

Safety, sustainability and community are central to how we operate. We are committed to continuous safety improvement and are working toward net zero Scope 1 and 2 emissions by 2050.

With more than 1,300 employees across WA, Queensland and Victoria, we foster a respectful, inclusive workplace where diverse thinking is valued. Guided by our Diversity, Equity, Inclusion and Belonging Strategy and Aboriginal Inclusion Plan, we support gender balance, cultural respect, Indigenous employment and flexible work. We invest in our people through training, career development and recognition programs.

With our headquarters in Perth, WesCEF plays a key role in supporting Australia’s economic growth and advancing a more sustainable future.

WESCEF: We create long-term value for critical industries and everyday life.

About the role

We are seeking an experienced Mechanical Field Supervisor  to manage and supervise mechanical and building maintenance activities on NPI assets across WesCEF. This hands‑on role is focused on contractor management, safety excellence and delivery of routine maintenance, capital and special maintenance projects to budget and schedule.

Reporting to the Field Engineering Supervisor, you will work closely with internal and external  stakeholders to ensure work is planned, executed and closed out safely, efficiently and in line with engineering, environmental and quality standards.

Key responsibilities

• Lead and supervise mechanical and facilities  maintenance activities using contract resources
• Ensure all work is performed in strict accordance with site Permit to Work and safety systems
• Develop scopes of work, support tendering and manage contractor performance
• Ensure the Computerised Maintenance Management System (CMMS) is utilised to manage work and workflows (Work Order system). Develop scopes of work for Preventative Maintenance (PM) task as required.
• Monitor costs, manage budgets and approve expenditure within delegation limits
• Investigate incidents, implement corrective actions and promote a strong safety culture
• Ensure compliance with engineering, environmental, quality and change management requirements
• Build strong working relationships with internal teams, contractors, regulators and consultants

About You  

• Trade certificate (Mechanical / Building trade)
• Minimum of 7 years’ experience in mechanical / Building installation or maintenance within the mining, chemical or mineral processing industry
• Proven experience supervising a team of employees or contractors
• Strong communication and influencing skills, with the ability to work autonomously
• Ability to read and interpret engineering drawings and standards
• Sound commercial and cost awareness with budget management experience
• Experience with underground services including pipeline repairs (desirable but not essential)

What we offer

At Wesfarmers Chemicals, Energy & Fertilisers (WesCEF), we value our people and offer a range of benefits designed to support your wellbeing, development and career growth, including:

• Competitive remuneration, including access to the Wesfarmers employee share plan and participation in our annual incentive plan
• Flexible working arrangements, including some work-from-home options where applicable
• Salary sacrifice opportunities, including novated leasing
• Access to a wide range of employee benefits across the Wesfarmers Group, including staff discounts at Bunnings, Kmart, Target, Officeworks and Kleenheat, as well as access to Wesfarmers-sponsored arts and cultural events
• Paid parental leave of up to 18 weeks
• Ongoing professional development and career opportunities across WesCEF and the broader Wesfarmers Group

Why WesCEF

At WesCEF, we are committed to building an engaged, high-performing and inclusive workforce that reflects the communities in which we operate. We value diversity of thinking, skills and experience, knowing this drives innovation and better business outcomes.

We welcome applications from people of all backgrounds and encourage Aboriginal and Torres Strait Islander peoples to apply.

We are proud to support flexible working arrangements and understand that flexibility looks different for everyone. If flexibility is important to you, we encourage you to discuss your needs as part of the application process.

WesCEF operates across multiple locations, with our two major hubs based in Kwinana and the Perth CBD.

Applications close: 5:00pm AWST Sunday 10th May 2026

Our recruitment process considers your alignment to our company values and the requirements of the role. We also have several checks which may be conducted to demonstrate your suitability for the role including but not limited to psychometric assessment, police checks, medical, drug and alcohol testing, right to work check, qualifications, due diligence and/or reference checks.      

We reserve the right to commence the recruitment process prior to the closing date. Therefore, it is recommended to apply as soon as possible.      

Agency applications will not be accepted.