Senior Engineer Mechanical

Tianqi Lithium Australia – Kwinana Beach WA Tianqi Lithium Energy Australia (TLEA) is a joint venture between Tianqi Lithium Corporation and IGO Ltd. As pioneers in the Australian lithium industry, we've already achieved great things, including building the first battery‑grade lithium hydroxide plant in Australia, paving the way for Australia to be a major player in the global transition to a clean energy future. We're looking for people who want to be a part of the industry of the future – people who work with purpose and urgency, take initiative, and rise to challenges. We're seeking individuals who empower others, embrace innovation, and want to work in an open and supportive environment, where teamwork and collaboration are valued. At TLEA, you'll be part of a team that is excited to be involved in a world‑class project that benefits not only the Western Australian community but the world. Are you passionate about making a real impact? TLEA is welcoming applications for a Senior Mechanical Engineer to join our Projects Engineering team on a two‑year max term contract based at our Kwinana plant. This role is critical in supporting the safe and efficient operation of our lithium hydroxide processing facility by leading mechanical engineering projects and driving continuous improvement. The successful applicant will be responsible for managing and executing mechanical engineering projects, developing maintenance strategies, and providing technical support to ensure plant reliability and performance. In addition to possessing our core values of distinction, pragmatism, honesty, tenacity, and innovation, this position will suit an experienced mechanical engineer who is analytical, detail‑oriented, and thrives in a collaborative, fast‑paced environment. Responsibilities Lead mechanical design and technical assessments for assigned debottlenecking modification projects, including piping, pressure equipment, rotating machinery, and mechanical packages. Review and approve mechanical related engineering deliverables such as datasheets, equipment specifications, layout drawings, tie‑in details, and calculations. Ensure all mechanical designs comply with relevant Australian Standards, TLK engineering practices, and operational requirements. Coordinate with multi‑discipline engineering teams (process, civil, structural, electrical, instrumentation) to ensure integrated design outcomes. Support procurement through preparation of technical specifications, evaluation of vendor submissions, and review of vendor documentation. Participate in HAZOPs, constructability reviews, and risk assessments to ensure safe and practical implementation of mechanical designs. Provide engineering support during construction, commissioning, and handover phases. Engage with operations and maintenance teams to ensure mechanical solutions are maintainable and aligned with site strategy. What you will bring Bachelor degree in mechanical engineering. Minimum eight years' experience in mechanical engineering roles, including brownfield and project‑based work in resource or chemical processing industries. Sound understanding of Australian Standards (e.g., AS1210, AS4041, ASME) and engineering practices relevant to process plants. Proven experience in pressure equipment, piping systems, rotating equipment, and layout design. Experience reviewing 3D models, mechanical drawings, and design deliverables. Strong communication and stakeholder engagement skills. Safety‑focused mindset with an ability to balance technical integrity and practical constructability. Experience in lithium or hydrometallurgical plant environments (desirable). Familiarity with document systems such as M‑files, Aconex, and Management of Change (MOC) processes (desirable). Experience working in EPCM delivery environments or client‑side project teams (desirable). Exposure to commissioning and plant performance testing (desirable). We offer Contribute to a green and sustainable industry of the future. Competitive salary with a performance‑based discretionary bonus structure. Additional superannuation. Award and recognition program. Long service leave option after five years (pro rata). Supportive colleagues committed to your success and well‑being. Inclusive and diverse work environment. Location TLEA proudly acknowledges the Whadjuk and Gnaala Karla Boodja people of the Noongar Nation, as the traditional custodians of the Kwinana area, where we operate our plant. Kwinana is 38 km from the Perth central business district, 20 km from City of Fremantle and just 7 km from Rockingham. #J-18808-Ljbffr