Provided is a process, including: receiving resume data from a computing device of a job candidate, the resume data including: a plurality of roles the job candidate has occupied, for each of the roles, a plurality of skills used by the job candidate in the respective roles, for each of the skills, a measure of usage of the respective skill in the respective role; combining the measures of usage of the each skill across the plurality of roles to form a skill density score for each of the skills; receiving a request for information about job candidates from a computing device of a recruiter; and sending data indicative of the skill density scores for at least some of the skills to the computing device of the recruiter.