Senior Optimisation Engineer at Mercury

Overview Mercury is a bold, future‑focused organisation that provides energy and telecommunications across New Zealand, with a strong focus on renewable energy and sustainability. We are looking for a Senior Optimisation Engineer based at our Geothermal site near Taupō to help maximise generation potential through technical and strategic leadership. Responsibilities Champion Safety & Compliance – Ensure all activities meet safety regulations and company standards, lead hazard analyses and participate in safety reviews. Support Site Operations – Optimise geothermal fluid production, injection, and power generation, provide technical guidance to plant operators and support SOPs and documentation. Solve Complex Problems – Troubleshoot scaling, corrosion and equipment performance issues, investigate efficiency losses and implement corrective actions. Deliver Value‑Enhancing Projects – Identify and lead initiatives to boost power output and operational efficiency, conduct feasibility studies and support capital projects. Lead Technical Analysis & Reporting – Perform thermodynamic analysis, monitor KPIs, maintain process models and support environmental reporting and compliance. Drive Process Optimization – Lead multi‑site projects that standardise and improve engineering workflows, collaborate with senior leadership to align strategies with business goals. Professional Development – Participate in a Process Engineering community of practice, foster continuous learning and knowledge sharing. Shape Strategic Process Development – Evaluate new technologies, lead change management and present insights to senior stakeholders. Qualifications Bachelor’s degree in Engineering (Chemical, Mechanical, Industrial, or related). 8–15 years in process engineering or optimisation roles. Strong experience in troubleshooting, process surveillance and optimisation. Proficiency in process modelling and simulation software. Excellent analytical, communication and leadership skills. Experience managing cross‑functional projects and mentoring technical professionals. What We Offer Additional 5 days leave per annum. $400 one‑off tax‑free payment towards setting up a home office. Diverse workplace that recognises unique abilities and talents. Annual salary reviews and excellent parental leave policy, with option to purchase additional leave. Career paths and facilities associated with one of New Zealand’s largest multi‑utility providers. Flexible working policy – autonomy to work flexibly from purpose‑built premises or home. Discounted health insurance and free life and income insurance. Well‑being programme including up to $100 annual check‑ups and confidential assistance programme. Gender affirmation leave and supportive bereavement leave, including leave for pet loss. #J-18808-Ljbffr