Engineer Process

Process Engineer – Refining & ManufacturingNZAS – New Zealand Aluminium SmeltersTiwai Point, Invercargill | Permanent RoleOptimise industrial processes at one of the world’s most efficient aluminium smelters — with purpose, challenge, and impact. Permanent employment with a global business which includes a huge range of additional benefits full-time role,?based in beautiful Invercargill, New Zealand, - relocation provided (if required) Flexible working arrangements with a supportive leadership team dedicated to your growth. About The RoleAt NZAS, we operate one of the world’s most efficient aluminium smelters — powered almost entirely by renewable hydroelectric energy.

The Process Engineer has key accountabilities of managing critical process variables associated with the production and baking of anodes, ensuring that a quality product is delivered to our customers on time and meets customer expectations. This is a leadership, technically focused role where you’ll apply your engineering expertise to optimise existing assets, solve operational challenges, and contribute to the design and implementation of process improvements. You’ll work closely with cross-functional teams to ensure safe, efficient, and reliable production — using data-driven insights and practical problem-solving to make a real impact.

What You’ll Be DoingReporting to the Senior Advisor Technical Development and working alongside a passionate team, you willTrack and analyse operational data to identify trends, draw conclusions, and make recommendations. Solve process-related issues using standard engineering methods and procedures. Manage the implementation of small-scale projects and improvement initiatives. Act as a trusted technical resource for supervisors and technicians in your area. Influence peers and leaders by contributing valuable insights to projects and daily operations. Develop your understanding of problem-solving and project management methodologies. Prepare clear, concise reports and documentation outlining actions and recommendations.

Provide technical support to production teams and supervise contractors or employees when required. Present proposed solutions and results to team members and stakeholders. What You’ll BringWe’re looking for a motivated and analytical engineer with a passion for continuous improvement. You’ll bringA Bachelor’s degree in Chemical or Process Engineering (or related discipline) OR relevant work experience in a similar role. Minimum 2+ years of experience in a refinery, manufacturing, or processing facility. Strong data analysis skills — including Excel, statistical tools, and process variable trending. A hands-on approach and willingness to work in a heavy industrial environment.

Familiarity with systems such as MS Office, Minitab, and OSIsoft Pi. Experience working in cross-functional teams to solve process optimisation challenges. LEAN Green belt training, highly regarded Exposure to Power BI, control logic or DCS systems (advantageous).

What We OfferA technically engaging role with real-world impact on operations and performance Competitive salary and benefits — including insurance, superannuation, and flexible leave options Career development and technical progression pathways within Rio Tinto A strong safety culture and values-driven team environment A unique lifestyle opportunity in one of New Zealand’s most scenic regions — powered by hydroelectricity Where You’ll Be WorkingNZAS is based at Tiwai Point, near Invercargill — a friendly, close-knit community at the southern tip of Aotearoa New Zealand.

Invercargill offers a relaxed lifestyle, affordable living, and easy access to some of the country’s most spectacular natural landscapes. You’ll be just two hours from Queenstown — with world-class skiing, hiking, biking, and wineries at your doorstep. Our site is operated by Rio Tinto and produces some of the world’s highest purity lowest-carbon aluminium. As a Process Engineer, you’ll be part of the team that ensures our operations remain efficient, sustainable, and future-ready.

Ready to Engineer What’s Next?If you’re a proactive, solutions-focused engineer ready to take the next step in your career — we’d love to hear from you. Apply now and energise your next chapter with NZAS. We value every voice. NZAS is proud to foster a culture of inclusion, safety, and integrity — and we welcome applicants from all backgrounds. About Rio TintoRio Tinto is a leading global mining and materials company.

We operate in 35 countries where we produce iron ore, copper, aluminium, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive. We have been mining for 150 years and operate with knowledge built up across generations and continents. Our purpose is finding better ways to provide the materials the world needs – striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards.

But we can’t do it on our own, so we’re focused on creating partnerships to solve problems, create win-win situations and meet opportunities. Every Voice MattersAt Rio Tinto, we particularly welcome and encourage applications from Indigenous Peoples, women, the LGBTQIA+ community, mature workers, people with disabilities and people from different cultural backgrounds. We are committed to an inclusive environment where people feel comfortable to be themselves. We want our people to feel that all voices are heard, all cultures respected and that a variety of perspectives are not only welcome – they are essential to our success.

We treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, sexual orientation or anything else that makes us different.