Jakob Nielsen, Ph.D., is a User Advocate and principal of the Nielsen Norman Group which he co-founded with Dr. Donald A. Norman (former VP of research at Apple Computer). Dr. Nielsen established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and has invented several usability methods, including heuristic evaluation. He holds 79 United States patents, mainly on ways of making the Internet easier to use.

Nielsen holds a Ph.D. in human–computer interaction (HCI) from the Technical University of Denmark in Copenhagen.

From 1994 to 1998 he was a Sun Microsystems Distinguished Engineer. He was hired to make heavy-duty enterprise software easier to use, since large-scale applications had been the focus of most of his projects at the phone company and IBM. But luckily the job definition of a Distinguished Engineer is "you're supposed to be the world's leading expert in your field, so you figure out what would be most important for the company for you to work on." Therefore, Dr. Nielsen ended up spending most of his time at Sun on defining the emerging field of Web usability. He was usability lead for several design rounds of Sun's website and intranet (SunWeb), including the original SunWeb design in 1994.

Dr. Nielsen's earlier affiliations include Bellcore (Bell Communications Research, Morristown, NJ), the IBM User Interface Institute at the T.J. Watson Research Center (Yorktown Heights, NY), the Technical University of Denmark (Copenhagen), and Aarhus University (Århus, Denmark).

Professional journal editorial board memberships: Behaviour & Information Technology, Foundations and Trends in Human-Computer Interaction, Interacting with Computers, Journal of Usability Studies (JUS), International Journal of Human-Computer Interaction, The New Review of Hypermedia and Multimedia. For each journal, contact the editor-in-chief to submit a manuscript.

In June 2000, Dr. Nielsen was inducted into the Scandinavian Interactive Media Hall of Fame and in April 2006, he was inducted into the ACM Computer-Human Interaction Academy. He was the 2013 recipient of the Lifetime Achievement Award for Human–Computer Interaction Practice from SIGCHI, the premiere professional society in the HCI field.

Technology, Internet, Website Development, Web Standards, Computer Science, Information Technology, Software, Software Development, Data Analytics, Databases & Infrastructure, Digital Transformation Engineering, User Experience,