Person conducting research and improving or developing concepts, theories, models, techniques, instrumentation, software or operational methods.

Researchers' tasks include:

• conducting research, experiments, tests and analyses
• developing concepts, theories, models, techniques, instrumentation, software and operational methods
• gathering, processing, evaluating, analysing, and interpreting research data
• evaluating the results of investigations and experiments and positing conclusions using different techniques and models
• applying principles, techniques and processes to develop or improve practical applications
• advising on designing, planning and organising the testing, construction, installation and maintenance of structures, machines, systems and their components
• providing advice and support to governments, organisations and businesses on the application of research results
• planning, directing and coordinating the R&D activities of institutions that provide related services to other organisations
• preparing scientific papers and reports.

• R&D personnel
• Internal R&D personnel
• External R&D personnel