We are looking for an experienced and motivated Senior Plumbing & Piping Engineer to join our growing engineering team delivering projects across Australia, the UK, and the US.

The ideal candidate will have a strong foundation in building-services plumbing and firefighting design, combined with experience in Water/Wastewater, pumping stations, process piping and/or Oil & Gas projects. Candidates who have transitioned from building-services PHE design into industrial, water or process piping environments are particularly encouraged to apply.

Key Roles & Responsibilities

Plumbing, Water & Fire Protection Design

- Design and deliver plumbing, water supply, drainage, sewerage and fire protection systems for building-services projects.
- Develop water supply, drainage and sewerage layouts, including internal and external systems.
- Carry out relevant hydraulic and system calculations for water supply, drainage and fire protection systems.
- Design and coordinate underground drainage, sewerage and stormwater systems.
- Design and coordinate water tanks, STP systems, pumping systems and associated infrastructure.
- Design fire protection systems including sprinklers, internal and external hydrants, fire pumps, fire tanks and associated pipework.
- Prepare design layouts, schematics, specifications, schedules, BOQs and tender documentation.
- Ensure designs comply with applicable local and international codes and standards.

Water, Wastewater & Industrial Piping

- Prepare and review piping layouts, piping plans, General Arrangement (GA) drawings and isometrics.
- Develop and interpret Piping & Instrumentation Diagrams (P&IDs;).
- Design piping systems for water treatment, pumping stations, pipelines, process plants, and oil & gas facilities.




- Perform piping routing, equipment layout coordination, and piping material selection.
- Coordinate closely with Process, Mechanical, Civil, Structural, Electrical, and Instrumentation teams.
- Produce high-quality 3D piping models and associated drawings using AutoCAD Plant 3D.
- Ensure designs comply with relevant Australian, UK, US, and international codes and standards.
- Participate in design reviews, HAZOPs, constructability reviews, and client meetings.
- Communicate directly with international clients, consultants, and project stakeholders.
- Mentor junior engineers and CAD designers.
- Support project planning, estimation, scheduling, and technical documentation.

Required Qualifications & Experience

- Bachelor's or Master's degree in Mechanical or Civil Engineering or equivalent.
- 8+ years of piping design experience within Water/Wastewater and/or Oil & Gas.
- Experience in building-services plumbing design, including water supply, drainage, sewerage and fire protection systems.
- Solid understanding of piping layouts, equipment coordination and multidisciplinary design.
- Experience with P&IDs; and AutoCAD Plant 3D.
- Knowledge of ASME, API, ISO and related standards.
- Experience working with international clients is preferred.

Preferred Skills

- Experience on Australian, UK or US projects.
- Exposure to BIM workflows and piping stress coordination.
- Excellent communication and customer-facing skills.

Project Exposure

- Building Services Commercial, Residential, Retail, Healthcare, Laboratories and other complex developments
- Water & Wastewater Treatment Plants, Pumping Stations, Process Plants, Oil & Gas Facilities and Industrial Infrastructure Projects for Australia, UK and US clients.

📌 Senior Plumbing & Firefighting Design Engineer (Thane)
🏢 Axium Global
📍 Thane