LinkedIn has documented the operators firstname:, lastname:, title:, company:, and school:. They are redundant because we can search using the relevant textboxes. But it turns out there are many more search operators that work on LinkedIn.
Below is a list of LinkedIn search operators that work with any basic or premium account, in the main search box. Many of the search facets I have discovered have only been available in LinkedIn Recruiter, and the operator headline:, uniquely, works only in a basic/premium account!
For each operator, you can use it with several values in the quotation marks, which means an AND of terms. For example, headline:"engineer senior" searches for both words senior and engineer to appear in the headlines (but not for a phrase).
You can certainly combine the operators and use the Boolean logic.
Note that the values calculated by LinkedIn are less reliable than those entered by members, no matter which account you use to search (I have marked those in the last column).
Tip Sheet - LinkedIn Search Operators
|Operator||Meaning||Values||Calculated by LinkedIn|
|headline:||search for keywords in Headline||no|
|skills:||search for keywords in Skills||no|
|spokenlanguage:||search for language proficiency by a language name||no|
|startyear:||search for the start year in college||no|
|endyear:||search for the end year in college||no|
|geo:||search for a Geoname||Geonames||no|
|title:||search for current job title||no|
|company:||search for current company name||no|
|school:||search for school name||no|
|firstname:||search for first name||no|
|lastname:||search for last name||no|
|industry:||search for the industry by Industry code||Industry Codes||no|
|seniority:||search for seniority||Seniority Codes||yes|
|profilelanguage:||search for profiles in other languages by a two-letter language abbreviation||Language Codes||no|
|functions:||search for functions||Job Functions||yes|
|yoe:||search for “years of experience”|