Principal Mechanical Engineer – Water Infrastructure Location: Eastern States | Sector: Water Infrastructure We are seeking a Principal Mechanical Engineer to provide leadership across major water treatment and distribution projects. Key Responsibilities: Oversee mechanical engineering design for treatment plants, pumping stations, and distribution systems. Provide technical leadership while mentoring junior engineers and designers. Collaborate with civil, structural, and electrical teams to deliver integrated solutions. Support business development and client engagement activities. Requirements: Bachelor’s degree in mechanical engineering (CPEng highly regarded). 10 years’ experience in mechanical design for water or heavy industry projects. Strong technical expertise in pumps, piping, rotating equipment, and process systems. Proven ability to lead multidisciplinary teams and deliver complex projects. Must be open to flexibility in project scope, client needs, and relocation if required. Personality Fit: Confident leader who inspires technical excellence. Commercially astute and client focused. Passionate about mentoring and knowledge sharing. Candidates open to relocation are encouraged to apply. Finer details are being discussed with the client, and arrangements may be tailored to suit the right person. Applicants already living and working in Australia will be prioritised. About OSOS Alliance OSOS Alliance is a specialist recruiter for the mining, construction, and energy industries. We pride ourselves on placing the right people in the right roles and supporting them all the way through.
