Senior Mechanical Engineer — Brownfield & Debottlenecking

Tianqi Lithium Energy Australia; City Of Kwinana; On-site; AUD 150,000 - 210,000; Full time

Benefits offered by this job

Competitive salary

Performance-based discretionary bonus

Additional Superannuation

Long service leave after 5 years (pro‑

Inclusive and diverse work environment

Job summary

Tianqi Lithium Energy Australia is seeking a Senior Engineer Mechanical to lead debottlenecking and brownfield projects at the Kwinana plant. You will provide end-to-end mechanical input from concept through construction, coordinating with process, civil, structural, electrical and instrumentation teams to deliver compliant, safe, and constructible solutions.

With 10+ years in mechanical engineering in resource or chemical processing, you will drive technical integrity, engage stakeholders, and

Qualifications

• Bachelor’s degree in mechanical engineering.
• Minimum 10 years’ experience in mechanical engineering roles.
• Brownfield and project-based work in resource or chemical processing industries.
• Understanding of Australian Standards (AS1210, AS4041, ASME).

Responsibilities

• Lead mechanical design and technical assessments for debottlenecking PMR projects including piping, equipment, and layout.
• Review mechanical deliverables such as datasheets, specifications, drawings, and calculations.
• Ensure designs comply with Australian Standards and TLK engineering practices.
• Coordinate with multi-discipline teams to achieve integrated designs.
• Support procurement with technical specs and vendor evaluations.
• Participate in HAZOPs, constructability reviews and risk assessments.
• Provide engineering support during construction, commissioning, and handover.
• Engage with operations to ensure maintainability and site alignment.

Skills

Mechanical design

Stakeholder engagement

Australian Standards

Safety-focused mindset

Education

Bachelor’s degree in mechanical engineering

Job description

Tianqi Lithium Energy Australia is seeking a Senior Engineer Mechanical to lead debottlenecking and brownfield projects at the Kwinana plant. You will provide end-to-end mechanical input from concept through construction, coordinating with process, civil, structural, electrical and instrumentation teams to deliver compliant, safe, and constructible solutions.

With 10+ years in mechanical engineering in resource or chemical processing, you will drive technical integrity, engage stakeholders, and