The table below provides summary statistics and contractor rates for jobs advertised in Welwyn Garden City requiring zOS skills. It covers contract job vacancies from the 6 months leading up to 20 November 2025, with comparisons to the same periods in the previous two years.
zOS falls under the Operating Systems category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring operating system skills in Welwyn Garden City.
Contract vacancies with a requirement for operating system skills
6
8
2
As % of all contract IT jobs advertised in Welwyn Garden City
18.18%
20.51%
8.33%
Number of daily rates quoted
4
1
0
10th Percentile
-
-
-
25th Percentile
£263
-
-
Median daily rate (50th Percentile)
£550
£450
-
Median % change year-on-year
+22.22%
-
-
75th Percentile
£838
-
-
90th Percentile
-
-
-
Hertfordshire median daily rate
£465
£513
£500
% change year-on-year
-9.37%
+2.50%
-
Number of hourly rates quoted
0
0
1
Median hourly rate
-
-
£70.00
Hertfordshire median hourly rate
£65.00
£65.00
£70.00
% change year-on-year
-
-7.14%
+7.69%
zOS Job Vacancy Trend in Welwyn Garden City
Historical trend showing the proportion of contract IT job postings citing zOS relative to all contract IT jobs advertised in Welwyn Garden City.
zOS Top 16 Co-Occurring Skills & Capabilities in Welwyn Garden City
For the 6 months to 20 November 2025, contractor job vacancies citing zOS also mentioned the following skills and capabilities in order of popularity.
The figures indicate the absolute number of co-occurrences and as a proportion of all contract job ads across the Welwyn Garden City region with a requirement for zOS.
zOS Co-Occurring Skills & Capabilities in Welwyn Garden City by Category
The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category:
