Hydrologists measure, analyse and maintain the quantity and quality of water in rivers, lakes, stormwater and sewage. They use this information to plan and develop strategies for water conservation and the improvement of water quality.

Interpreters use their knowledge of languages and cultures to convert a spoken or signed language into another spoken or signed language, usually within a limited time frame and in the presence of the participants who need to communicate. Interpreters usually specialise in a particular language combination (French and English, for example) and may also specialise in a particular subject area, such as commerce, law, health, science, technology or welfare.

Laboratory workers assist scientists, engineers, technical officers and other laboratory staff by collecting and preparing samples, carrying out experiments, making measurements with scientific equipment, recording results and presenting them for critical analysis.

Mathematicians apply and develop mathematical principles to solve problems in all areas of the sciences, technology, social sciences, business, industry and commerce.

Medical scientists conduct medical laboratory tests to provide information for diagnosing, treating and preventing disease. A medical scientist may specialise in haematology, immunology, transfusion science, clinical biochemistry, microbiology, histopathology, cytology, molecular genetics or virology.

Metallurgists research, control and develop processes that are used in extracting minerals from ore (rock) for refining metals.

Meteorologists forecast the weather and study the atmosphere to improve the understanding of climate.

Museum curators look after, manage, organise, display and develop museum collections, and conduct related research. Museum curators usually specialise in a broad discipline, such as anthropology, art, decorative arts, natural history, social history, science or technology. Within that discipline they are generally recognised as authorities on one or more specific subject areas.

Nuclear Medicine Scientists (also known as Nuclear Medicine Technologists) are highly skilled health experts who use very small quantities of radionuclides to diagnose diseases — by detecting physiological and metabolic changes within the body and using the same principles to treat diseases. A career in nuclear medicine combines the humanities of patient care, sociology of health, cutting-edge science (instrumentation and computing) with health/medical science. Get qualified to deliver radionuclide therapies and to provide diagnosis using a gamma camera, SPECT, PET, SPECT/CT, PET/CT, PET/MRI and CT. If you believe that radiography or radiation therapy could be a suitable career choice for you, then a career in nuclear medicine, which combines imaging and therapy, would be a great fit. The starting average weekly salary for fresh graduates ranges from $1,288, with the potential to increase to $1,430 or more as you gain experience, along with superannuation benefits (according to Indeed data).

Physicists study the behaviour of the physical world at the most basic level and find practical ways to apply new knowledge gained from their research in areas of science and technology.Physicists are usually identified within three broad roles:• theoretical physicists, who develop theories or models of how particular aspects of the world work• experimental physicists, who test these theories, determining their limits and suggesting new approaches to them• applied physicists, who apply these findings in practical settings, such as within industry and through the introduction of new technology.There is interaction between all three roles and physicists generally have skills in each of these areas.

Statisticians design and apply statistical techniques for creating, collecting and analysing data to draw conclusions, inform decision-making and direct policy within areas such as science, technology, medicine, education, business, finance and government.

Secondary school teachers teach one or more subjects within the school curriculum to secondary students. Subject areas include English, mathematics, science, history, geography, drama, dance, art, music, health and physical education, design, information technology, languages other than English, and home economics.

Technical writers research and write information-based material for articles, manuals, textbooks, handbooks and other multimedia products, usually for education or corporate purposes. They draw on a substantial knowledge of a particular subject, such as the natural or social sciences, engineering, law or other fields. The work involves the development of information and analysis to select and present information on the specialised subject in a form and at a level that is suitable for the intended audience.

Trade union officials work to maintain and improve the wages, conditions and employment opportunities of workers in particular occupations or industries. In some unions, trade union officials are elected from the union's membership, but in others they are appointed to paid positions. Officials with training in fields such as law, journalism, economics, accountancy and welfare may be appointed to specialist positions (such as legal officer or media officer). Research officers generally have tertiary qualifications that may be in a broad range of disciplines from arts to science.

Translators convert written documents from one language to another while maintaining the precise meaning of the original text. Translators usually specialise in two or more languages. They may also specialise in a particular field of work such as commerce, law, health, science, technology or literature.