Senior Mechanical Engineer - HVAC, Fire Protection and Plumbing

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Employment: Full Time

Building on our past. Ready for the future

Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.

Right now, we're bridging two worlds as we accelerate to more sustainable energy sources, while helping our customers provide the energy, chemicals and resources that society needs now.

We partner with our customers to deliver projects and create value over the life of their portfolio of assets. We solve complex problems by finding integrated data-centric solutions from the first stages of consulting and engineering to installation and commissioning, to the last stages of decommissioning and remediation. Join us and help drive innovation and sustainability in our projects.
- Mechanical Engineer experienced in buildings, infrastructure/MEP projects, refinery, petrochemical, and oil/gas industry.
- Knowledgeable with Codes and industry standards (ex. International Plumbing code, NFPA, International mechanical code, local authority codes and standards etc.) is essential.
- Experience to develop studies for existing and new buildings, conducting site surveys, FEED and Detail design along with the development of engineering/procurement documents.
- Ability to develop Fire Protection and Plumbing design basis reports for conceptual and Detail design projects and obtain approvals from Client Representatives.
- Ability to Perform Plumbing Calculations, as per fixture load units using excel spreadsheets
- Able to develop the domestic water storage tank capacity.
- Able to develop schematic layouts /Single line diagrams for both water supply and drainage systems.
- Ability to develop water supply layouts including flow rate, pipe sizing, routing and selection of pipe materials as per international standards.
- Ability to perform head loss calculations and select the pumps,
- Ability to develop rainwater system layouts including flow rate and pipe sizing as per rain fall intension
- Able to design all types of fire protection systems like Wet Sprinkler, Standpipe, Deluge, Water spray, Foam and Gas suppression systems as per Saudi Aramco Engineering Standards and international standards like NFPA, IFC and IBC.
- Able to perform all Saudi engineering Loss prevention and Fire Protection requirements.
- Able to perform Hydraulic calculations like Elite fire and Pipe net.
- Able to perform all engineering drawings using MicroStation and AutoCAD.
- Able to perform design scope, construction scope, technical specifications, functional specifications, Sub-contract scope of work.
- Able to perform on Material take off's and support estimate team whenever required.
- Able to perform Third Party certifications works to obtain approvals on fire protection design package as per Saudi Aramco Standards.
- Able to assist CADD designers/ draughtsman for developing all engineering deliverables.
- Able to develop scope of work, specifications, Bill of quantities and subcontract scope
- Ability to interact with internal Engineering/Design disciplines and client during the course of projects
- Working Knowledge experience of REVIT, AUTOCAD, MicroStation and energy modelling software.
- Ability to interact/coordinate other Architectural, Civil Structural, electrical design and drafting activities including 3D Design.
- Able to report the project status by updating weekly reports, monthly reports and develop the mitigation plans to meet the project milestones, if required.
- Attending meeting with the Client, Coordination meetings, Technical Review meeting, Value Engineering session and Constructability sessions.
- An effective communicator with excellent interpersonal skills and flexible to work under pressure


- BS or MS in mechanical engineering discipline is required
- Proficiency with Microsoft Applications is required
- Ability to work independently and complete tasks as scheduled is required
- Good interpersonal skills, ability to work in a team environment is required

Moving forward together

We want our people to be energized and empowered to drive sustainable impact. So, our focus is on a values-inspired culture that unlocks brilliance through belonging, connection and innovation.

We're building a diverse, inclusive and respectful workplace. Creating a space where everyone feels they belong, can be themselves, and are heard.

And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills, and supporting the transition of our workforce to become experts in today's low carbon energy infrastructure and technology.

Whatever your ambition, there's a path for you here. And there's no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities, and be part of delivering sustainable change.


Worley is a leading global provider of professional services in the energy, chemicals and resources sectors. We partner with our customers to address their most critical challenges at every stage of their projects: from initial concepts to sustaining and enhancing their assets. And we provide smarter, bolder solutions while delivering on our own sustainability commitments.

We are 51,000 bright minds across 46 countries all driven by a common purpose – delivering a more sustainable world. While working to fulfill our ambition to be recognized globally as the leader in sustainability solutions.

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