Industrial Hygienist – NZAS
Tiwai Point, Invercargill | Permanent Role | Relocation Provided
Join New Zealand Aluminium Smelters (NZAS) — a globally recognised producer of ultra‑high‑purity, low‑carbon aluminium. Our operation is one of Aotearoa New Zealand’s most complex industrial environments, and protecting the long‑term health of the people who work here is critical.
We are seeking an
Industrial Hygienist to lead and continually strengthen our workplace exposure monitoring programme across all NZAS operations — in line with
New Zealand legislation and
Rio Tinto’s global health standards.
This is a rare opportunity to shape the long‑term health protection of an entire workforce.
About The Role
As the site’s
subject matter expert in occupational hygiene, you will own the systems, monitoring, insight generation, and strategic risk management that protect workers from health hazards. You will work across all production areas, maintenance teams, and contracting partners.
Your responsibilities include
- Leading the full workplace hygiene monitoring programme (airborne contaminants, noise, thermal stress, ergonomics, biological and chemical exposures)
- Ensuring compliance with NZ legislation, Rio Tinto health standards, and port‑related regulatory requirements (where applicable)
- Designing and executing exposure monitoring plans, including personal and static sampling, both independently as well as working alongside our external consultants
- Conducting exposure assessments, interpreting results, and communicating health risks clearly to leaders and workers
- Advising on engineering, administrative, and PPE controls to manage exposures
- Supporting the development and continuous improvement of Rio Tinto health systems, processes, and audits
- Assessing contractor compliance and supporting health‑related contractor management
- Reporting critical health risks and trends to the HSES Manager and wider leadership team
- Providing expert technical support for investigations involving potential health exposures
- Building capability across frontline teams through practical coaching and education
You will be a trusted technical advisor who combines scientific rigour with practical, operational understanding.
What You’ll Bring
We welcome both
experienced Occupational/Industrial Hygienists and
those working toward professional accreditation.
You will have
- Experience in occupational hygiene, exposure assessment, industrial health, or a related discipline
- Practical working knowledge of NZ workplace health legislation and exposure standards
- Strong analytical skills and confidence interpreting complex monitoring data
- Ability to develop monitoring strategies and deliver clear, meaningful insights
- Strong communication skills with credibility at all levels of the operation
- A relevant qualification in occupational hygiene, health science, science, engineering, or similar
- Preferred Chartered / certified Occupational Hygienist (e.g., BOHS, AIOH, IOHA).
- Considered Candidates actively working toward certification and demonstrating strong technical capability and professional growth potential.
This role suits someone who is methodical, curious, evidence‑driven, and passionate about protecting long‑term worker health.
This Role Is for You If You…
- Want to own and evolve a site‑wide occupational hygiene programme
- Enjoy technical fieldwork, analysis, and translating data into practical controls
- Value accuracy, integrity, and scientific discipline
- Are excited by complex industrial environments
- Want to make a direct, long‑term impact on worker health outcomes
What We Offer
- Permanent role based in Invercargill, with full relocation support
- Competitive salary with annual incentive
- Medical benefits, wellbeing support, and retirement savings
- Flexible working arrangements
- Rio Tinto employee share programme
- Career development and global network opportunities across Rio Tinto
- The chance to lead meaningful health protection work in a world‑class industrial facility
About NZAS / Rio Tinto
NZAS is part of Rio Tinto Aluminium & Lithium – Pacific Operations. We operate one of the world’s cleanest, most efficient aluminium smelters, supported by a diverse team of technical specialists. Invercargill offers an exceptional lifestyle with affordable living, outdoor adventure, strong schools, and a supportive community.
Ready to Shape the Future of Worker Health at NZAS?
Apply now and help strengthen the health protection systems of one of New Zealand’s most important industrial operations.
Applications close Friday 6 February 2026
Learn more https //nzas.co.nz | https //tiwaistories.co.nz
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About Rio Tinto
Rio 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.
Respect and Inclusion
At 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.
