Skill or tool
From ESCO (not reviewed)
Source: ESCO. This service uses the ESCO classification of the European Commission (CC BY 4.0); not reviewed by CareersMatch yet.
Job ads, 2026-W39
0
Job ads count every advert. Roles count different jobs.
Each point is the number of job ads still open at the end of that week that list this as a requirement. A dashed line marks a week we did not count.
Showing the latest count. Trends are coming soon.
Not counted in 2026-W35. We leave those weeks blank.
3 career paths list swimming pool chemicals, essential first.