Period
to 18 January 2018

The following table provides summary statistics for contract job vacancies advertised in Wales with a requirement for CentOS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CentOS over the 6 months to 18 January 2018 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

CentOS Linux
UK > Wales
6 months to
18 Jan 2018
Same period 2017 Same period 2016
Rank 86 100 108
Rank change year-on-year +14 +8 -11
Contract jobs citing CentOS 11 4 4
As % of all contract IT jobs advertised in Wales 0.84% 0.28% 0.28%
As % of the Operating Systems category 3.94% 1.22% 1.10%
Number of daily rates quoted 9 3 4
Wales median daily rate £375 £413 £378
Median daily rate % change year-on-year -9.09% +9.27% +7.86%
10th Percentile £343 £381 £289
90th Percentile £469 £424 £421
UK median daily rate £475 £463 £438
% change year-on-year +2.70% +5.71% +9.38%
Number of hourly rates quoted 0 0 0
Wales median hourly rate - - -
UK median hourly rate £29.00 £17.00 £50.00
% change year-on-year +70.59% -66.00% +5.26%

CentOS is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Wales with a requirement for operating system skills.

All Operating Systems
Wales
Contract vacancies with a requirement for operating system skills 279 329 364
As % of all contract IT jobs advertised in Wales 21.43% 23.38% 25.23%
Number of daily rates quoted 163 204 266
Wales median daily rate £375 £425 £350
Median daily rate % change year-on-year -11.76% +21.43% +7.69%
10th Percentile £137 £158 £169
90th Percentile £488 £550 £475
UK median daily rate £425 £403 £400
% change year-on-year +5.59% +0.63% +6.67%
Number of hourly rates quoted 36 52 41
Wales median hourly rate £14.00 £12.38 £11.60
Median hourly rate % change year-on-year +13.13% +6.68% -22.67%
10th Percentile £10.63 £10.50 £9.25
90th Percentile £36.24 £20.59 £22.00
UK median hourly rate £17.43 £16.50 £16.50
% change year-on-year +5.64% - +3.13%

CentOS
Job Vacancy Trend in Wales

Job postings citing CentOS as a percentage of all IT jobs advertised in Wales.

Job vacancy trend for CentOS in Wales

CentOS
Contractor Daily Rate Trend in Wales

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing CentOS in Wales.

Contractor daily rate trend for CentOS in Wales

CentOS
Contract Job Locations in Wales

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the Wales region over the 6 months to 18 January 2018. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
South Wales +13 11 £375 -9.09% 4
CentOS
UK

For the 6 months to 18 January 2018, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Wales region with a requirement for CentOS.

1 11 (100.00%) Linux
2 10 (90.91%) Red Hat Enterprise Linux
3 9 (81.82%) Security Cleared
4 8 (72.73%) SC Cleared
4 8 (72.73%) Unix
4 8 (72.73%) TCP/IP
4 8 (72.73%) Red Hat
5 7 (63.64%) MySQL
6 6 (54.55%) Perl
6 6 (54.55%) Apache
6 6 (54.55%) Python
6 6 (54.55%) DHCP
6 6 (54.55%) NFS
6 6 (54.55%) VLAN
6 6 (54.55%) Postfix
6 6 (54.55%) Sendmail
6 6 (54.55%) SolarWinds
6 6 (54.55%) Bash Shell
6 6 (54.55%) LAMP
6 6 (54.55%) SAN
6 6 (54.55%) Ruby
6 6 (54.55%) iptables
7 5 (45.45%) PHP
8 4 (36.36%) VMware
8 4 (36.36%) Clustering
8 4 (36.36%) VMware Infrastructure
9 3 (27.27%) Amazon AWS
10 2 (18.18%) Relational Database
10 2 (18.18%) Analytical Skills
10 2 (18.18%) Windows Server

CentOS
Co-occurring IT Skills in Wales by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 6 (54.55%) Apache
2 1 (9.09%) Tomcat
Cloud Services
1 3 (27.27%) Amazon AWS
2 2 (18.18%) Microsoft Azure
Communications & Networking
1 8 (72.73%) TCP/IP
2 6 (54.55%) DHCP
2 6 (54.55%) SAN
2 6 (54.55%) VLAN
3 2 (18.18%) Firewall
Database & Business Intelligence
1 7 (63.64%) MySQL
2 2 (18.18%) RDBMS
2 2 (18.18%) Relational Database
2 2 (18.18%) SQL Server
3 1 (9.09%) PostgreSQL
Job Titles
1 6 (54.55%) Unix Engineer
2 5 (45.45%) Support Engineer
2 5 (45.45%) Unix Support
2 5 (45.45%) Unix Support Engineer
3 3 (27.27%) Administrator
3 3 (27.27%) Unix Administrator
4 2 (18.18%) DBA
4 2 (18.18%) SQL DBA
5 1 (9.09%) Developer
5 1 (9.09%) Java Developer
5 1 (9.09%) SC Cleared DBA
5 1 (9.09%) Systems Administrator
5 1 (9.09%) Systems Engineer
5 1 (9.09%) Systems Support
5 1 (9.09%) Systems Support Engineer
5 1 (9.09%) Unix Systems Administrator
5 1 (9.09%) Unix Systems Engineer
Libraries, Frameworks & Software Standards
1 6 (54.55%) LAMP
2 1 (9.09%) AngularJS
2 1 (9.09%) CSS
2 1 (9.09%) HTML
2 1 (9.09%) HTML5
2 1 (9.09%) JSON
2 1 (9.09%) SOAP
2 1 (9.09%) Spring
2 1 (9.09%) Twitter Bootstrap
2 1 (9.09%) Web Services
Miscellaneous
1 4 (36.36%) Clustering
2 2 (18.18%) Analytical Skills
2 2 (18.18%) Replication
3 1 (9.09%) LPAR
Operating Systems
1 11 (100.00%) Linux
2 10 (90.91%) Red Hat Enterprise Linux
3 8 (72.73%) Unix
4 2 (18.18%) AIX
4 2 (18.18%) Debian
4 2 (18.18%) HPUX
4 2 (18.18%) Solaris
4 2 (18.18%) Ubuntu
4 2 (18.18%) Windows
4 2 (18.18%) Windows Server
5 1 (9.09%) Amazon Linux
Processes & Methodologies
1 2 (18.18%) Collaborative Working
2 1 (9.09%) Problem Management
Programming Languages
1 6 (54.55%) Bash Shell
1 6 (54.55%) Perl
1 6 (54.55%) Python
1 6 (54.55%) Ruby
2 5 (45.45%) PHP
3 2 (18.18%) PowerShell
3 2 (18.18%) SQL
3 2 (18.18%) T-SQL
4 1 (9.09%) Java
Qualifications
1 9 (81.82%) Security Cleared
2 8 (72.73%) SC Cleared
3 2 (18.18%) DV Cleared
3 2 (18.18%) MCSA
3 2 (18.18%) MCSE
3 2 (18.18%) Microsoft Certification
System Software
1 6 (54.55%) iptables
1 6 (54.55%) NFS
1 6 (54.55%) Postfix
1 6 (54.55%) Sendmail
2 4 (36.36%) VMware Infrastructure
3 1 (9.09%) KVM
Vendors
1 8 (72.73%) Red Hat
2 6 (54.55%) SolarWinds
3 4 (36.36%) VMware
4 2 (18.18%) Microsoft
4 2 (18.18%) Oracle