Period
to 18 July 2019

The following table provides summary statistics for contract job vacancies advertised in the UK excluding London 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 July 2019 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 > UK excluding London
6 months to
18 Jul 2019
Same period 2018 Same period 2017
Rank 319 424 363
Rank change year-on-year +105 -61 +66
Contract jobs citing CentOS 343 257 297
As % of all contract IT jobs advertised in the UK excluding London 0.69% 0.47% 0.58%
As % of the Operating Systems category 3.17% 2.22% 2.73%
Number of daily rates quoted 185 162 190
UK excluding London median daily rate £500 £444 £463
Median daily rate % change year-on-year +12.68% -4.05% +8.82%
10th Percentile £358 £363 £350
90th Percentile £666 £588 £588
UK median daily rate £500 £500 £490
% change year-on-year - +2.04% +8.89%
Number of hourly rates quoted 5 4 11
UK excluding London median hourly rate £35.00 £34.24 £35.00
Median hourly rate % change year-on-year +2.21% -2.16% +159.26%
UK median hourly rate £35.00 £49.50 £37.50
% change year-on-year -29.29% +32.00% +177.78%

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 the UK excluding London with a requirement for operating system skills.

All Operating Systems
UK excluding London
Contract vacancies with a requirement for operating system skills 10,826 11,602 10,861
As % of all contract IT jobs advertised in the UK excluding London 21.86% 21.05% 21.32%
Number of daily rates quoted 6,319 6,524 6,303
UK excluding London median daily rate £400 £388 £400
Median daily rate % change year-on-year +3.16% -3.06% +6.67%
10th Percentile £140 £160 £170
90th Percentile £575 £538 £538
UK median daily rate £425 £425 £425
Number of hourly rates quoted 933 1,108 907
UK excluding London median hourly rate £16.50 £16.00 £15.50
Median hourly rate % change year-on-year +3.13% +3.23% -6.06%
10th Percentile £11.17 £10.94 £10.50
90th Percentile £48.75 £47.00 £46.00
UK median hourly rate £17.50 £17.50 £16.50
% change year-on-year - +6.06% -

CentOS
Job Vacancy Trend in the UK excluding London

Job postings citing CentOS as a percentage of all IT jobs advertised in the UK excluding London.

Job vacancy trend for CentOS in the UK excluding London

CentOS
Contractor Daily Rate Trend in the UK excluding London

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

Contractor daily rate trend for CentOS in the UK excluding London

CentOS
Contractor Daily Rate Histogram in the UK excluding London

The daily rate distribution of IT jobs citing CentOS in the UK excluding London over the 6 months to 18 July 2019.

Contractor daily rate histogram for CentOS in the UK excluding London

CentOS
Contractor Hourly Rate Trend in the UK excluding London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing CentOS in the UK excluding London.

Contractor hourly rate trend for CentOS in the UK excluding London

CentOS
Contractor Hourly Rate Histogram in the UK excluding London

The hourly rate distribution of IT jobs citing CentOS in the UK excluding London over the 6 months to 18 July 2019.

Contractor hourly rate histogram for CentOS in the UK excluding London

CentOS
Contract Job Locations in the UK excluding London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the UK excluding London region over the 6 months to 18 July 2019. 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
North of England +53 85 £475 +7.04% 33
Scotland +76 66 £550 +10.00% 5
South West +20 65 £638 +59.38% 24
East of England +33 56 £525 +23.53% 13
South East -29 34 £394 -17.11% 17
Midlands +27 32 £438 -7.89% 24
North West +7 30 £525 +10.53% 20
North East +42 28 £450 -25.00% 11
Yorkshire +25 27 £525 +25.00% 2
East Midlands +23 17 £500 - 13
West Midlands +19 15 £394 -12.50% 11
Wales +9 6 £400 -5.88% 4
CentOS
UK

For the 6 months to 18 July 2019, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the UK excluding London region with a requirement for CentOS.

1 343 (100.00%) Linux
2 192 (55.98%) Amazon AWS
3 162 (47.23%) Red Hat Enterprise Linux
4 155 (45.19%) Jenkins
5 149 (43.44%) Terraform
6 148 (43.15%) DevOps
7 140 (40.82%) Ansible
8 136 (39.65%) Red Hat
9 132 (38.48%) Git (software)
10 127 (37.03%) Microservices
11 120 (34.99%) Puppet
12 115 (33.53%) Agile Software Development
13 114 (33.24%) MySQL
14 113 (32.94%) Python
15 112 (32.65%) Java
16 97 (28.28%) Security Cleared
17 89 (25.95%) Bash Shell
18 88 (25.66%) Unix
19 83 (24.20%) Windows
20 75 (21.87%) JIRA
20 75 (21.87%) Docker
21 74 (21.57%) Kubernetes
21 74 (21.57%) Microsoft Azure
22 69 (20.12%) Configuration Management
23 67 (19.53%) Active Directory
24 66 (19.24%) Opscode Chef
25 63 (18.37%) TDD
26 61 (17.78%) SC Cleared
27 60 (17.49%) Ubuntu
27 60 (17.49%) VMware

CentOS
Co-occurring IT Skills in the UK excluding London 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 31 (9.04%) Apache
1 31 (9.04%) JBoss
2 24 (7.00%) Tomcat
3 22 (6.41%) Confluence
4 13 (3.79%) nginx
4 13 (3.79%) OpenStack
5 12 (3.50%) IIS
6 3 (0.87%) SharePoint
7 2 (0.58%) Apache Spark
7 2 (0.58%) Drupal
7 2 (0.58%) Elasticsearch
7 2 (0.58%) WordPress
8 1 (0.29%) CMS
8 1 (0.29%) GlassFish
8 1 (0.29%) Mailman
8 1 (0.29%) MS Exchange
8 1 (0.29%) SharePoint 2010
8 1 (0.29%) SharePoint 2013
8 1 (0.29%) WebLogic
Applications
1 2 (0.58%) Microsoft Office
Business Applications
1 1 (0.29%) NetSuite
Cloud Services
1 192 (55.98%) Amazon AWS
2 74 (21.57%) Microsoft Azure
3 42 (12.24%) Amazon EC2
4 38 (11.08%) Amazon S3
5 37 (10.79%) Virtual Private Cloud
6 33 (9.62%) Route 53
7 31 (9.04%) Amazon EKS
8 29 (8.45%) Amazon ELB
9 28 (8.16%) Google Cloud Platform
10 22 (6.41%) OpenShift
11 18 (5.25%) AWS CloudFormation
12 15 (4.37%) Amazon CloudWatch
13 14 (4.08%) IaaS
14 13 (3.79%) PaaS
15 12 (3.50%) Amazon ECS
15 12 (3.50%) Azure Stack
16 9 (2.62%) Cloud Computing
16 9 (2.62%) Slack
17 5 (1.46%) CloudFront
17 5 (1.46%) Office 365
Communications & Networking
1 30 (8.75%) HTTP
2 27 (7.87%) SAN
3 26 (7.58%) LAN
3 26 (7.58%) WAN
4 24 (7.00%) DNS
5 20 (5.83%) Firewall
6 19 (5.54%) TCP/IP
7 18 (5.25%) VPN
8 17 (4.96%) VLAN
9 13 (3.79%) MPLS
10 11 (3.21%) Ethernet
10 11 (3.21%) IGMP
10 11 (3.21%) Multicast
10 11 (3.21%) OSPF
10 11 (3.21%) Wireless
11 7 (2.04%) HTTPS
12 5 (1.46%) DHCP
12 5 (1.46%) Skype
13 4 (1.17%) Internet
13 4 (1.17%) OpenLDAP
Database & Business Intelligence
1 114 (33.24%) MySQL
2 42 (12.24%) Oracle Database
3 38 (11.08%) MongoDB
4 35 (10.20%) MariaDB
5 29 (8.45%) Apache Cassandra
6 26 (7.58%) PostgreSQL
7 24 (7.00%) Amazon RDS
8 17 (4.96%) Amazon Aurora
9 12 (3.50%) Hadoop
10 11 (3.21%) Ingres
11 10 (2.92%) Big Data
12 9 (2.62%) SQL Server
13 8 (2.33%) Relational Database
14 7 (2.04%) RDBMS
15 4 (1.17%) Cloudera CDH
15 4 (1.17%) HBase
16 3 (0.87%) Data Warehouse
16 3 (0.87%) MySQL Workbench
17 2 (0.58%) Amazon Athena
17 2 (0.58%) Amazon Redshift
Development Applications
1 155 (45.19%) Jenkins
2 132 (38.48%) Git (software)
3 75 (21.87%) JIRA
4 57 (16.62%) SonarQube
5 41 (11.95%) JUnit
6 35 (10.20%) SoapUI
7 25 (7.29%) Maven
8 23 (6.71%) GitLab
9 22 (6.41%) Sonatype Nexus
10 19 (5.54%) Artifactory
10 19 (5.54%) CircleCI
11 14 (4.08%) Bitbucket
12 11 (3.21%) MSBuild
12 11 (3.21%) Vagrant
13 5 (1.46%) FindBugs
13 5 (1.46%) Log4j
13 5 (1.46%) Mercurial
13 5 (1.46%) Subversion
14 3 (0.87%) Checkstyle
14 3 (0.87%) Hudson
General
1 11 (3.21%) Finance
2 9 (2.62%) Back Office
3 5 (1.46%) Banking
3 5 (1.46%) Telecoms
4 4 (1.17%) Electronics
4 4 (1.17%) Games
4 4 (1.17%) Manufacturing
4 4 (1.17%) Marketing
5 2 (0.58%) Publishing
6 1 (0.29%) Legal
Job Titles
1 100 (29.15%) DevOps Engineer
2 68 (19.83%) Developer
3 48 (13.99%) Java Developer
4 36 (10.50%) Infrastructure Engineer
5 33 (9.62%) Lead Developer
6 32 (9.33%) Administrator
7 27 (7.87%) Lead DevOps
8 26 (7.58%) Systems Administrator
9 25 (7.29%) Linux Administrator
10 24 (7.00%) Lead DevOps Engineer
10 24 (7.00%) Lead Java Developer
11 21 (6.12%) Linux Systems Administrator
12 20 (5.83%) Cloud Engineer
13 19 (5.54%) Platform Engineer
14 16 (4.66%) Architect
15 15 (4.37%) AWS Engineer
15 15 (4.37%) Linux Engineer
16 13 (3.79%) Technical Architect
17 12 (3.50%) Migration Engineer
17 12 (3.50%) Network Engineer
Libraries, Frameworks & Software Standards
1 57 (16.62%) Spring
2 49 (14.29%) Spring Boot
3 34 (9.91%) SOAP
4 31 (9.04%) Kafka
5 30 (8.75%) Elastic Stack
6 28 (8.16%) .NET
7 27 (7.87%) Node.js
8 25 (7.29%) LDAP
8 25 (7.29%) Middleware
9 17 (4.96%) RESTful
10 16 (4.66%) RabbitMQ
11 15 (4.37%) J2EE
12 13 (3.79%) LAMP
13 12 (3.50%) LEMP Stack
14 9 (2.62%) Web Services
15 8 (2.33%) HTML
16 5 (1.46%) LAPP Stack
17 4 (1.17%) CSS
18 3 (0.87%) ActiveMQ
18 3 (0.87%) Apache Camel
Miscellaneous
1 32 (9.33%) Public Cloud
2 20 (5.83%) Clustering
3 19 (5.54%) Cloud Native
4 16 (4.66%) Data Centre
5 14 (4.08%) Replication
6 11 (3.21%) Driving Licence
7 6 (1.75%) Analytical Skills
8 5 (1.46%) Management Information System
8 5 (1.46%) PKI
9 3 (0.87%) Hybrid Cloud
10 2 (0.58%) Greenfield Project
10 2 (0.58%) Wiki
11 1 (0.29%) Enterprise Software
11 1 (0.29%) Linux Command Line
11 1 (0.29%) NHS
11 1 (0.29%) Private Cloud
11 1 (0.29%) Smartcard
11 1 (0.29%) Virtual Team
Operating Systems
1 343 (100.00%) Linux
2 162 (47.23%) Red Hat Enterprise Linux
3 88 (25.66%) Unix
4 83 (24.20%) Windows
5 60 (17.49%) Ubuntu
6 37 (10.79%) Solaris
7 36 (10.50%) Windows Server
8 35 (10.20%) Debian
9 19 (5.54%) CoreOS
9 19 (5.54%) Windows Server 2012
10 7 (2.04%) Windows Server 2008
11 5 (1.46%) Fedora
12 4 (1.17%) Windows 7
13 3 (0.87%) AIX
13 3 (0.87%) SUSE
14 2 (0.58%) Gentoo
14 2 (0.58%) Mac OS X
14 2 (0.58%) Windows 10
14 2 (0.58%) Windows Server 2003
15 1 (0.29%) Amazon Linux
Processes & Methodologies
1 148 (43.15%) DevOps
2 127 (37.03%) Microservices
3 115 (33.53%) Agile Software Development
4 69 (20.12%) Configuration Management
5 63 (18.37%) TDD
6 52 (15.16%) Infrastructure as Code
7 48 (13.99%) Continuous Integration
8 43 (12.54%) Scaled Agile Framework
9 41 (11.95%) BDD
9 41 (11.95%) Scrum
10 39 (11.37%) Technical Leadership
11 38 (11.08%) Infrastructure Engineering
12 35 (10.20%) Service Management
13 33 (9.62%) Migration
14 30 (8.75%) Mentoring
14 30 (8.75%) Problem-Solving
15 26 (7.58%) Software Engineering
16 23 (6.71%) Infrastructure Monitoring
16 23 (6.71%) Load Balancing
17 21 (6.12%) Infrastructure Automation
Programming Languages
1 113 (32.94%) Python
2 112 (32.65%) Java
3 89 (25.95%) Bash Shell
4 48 (13.99%) JavaScript
5 31 (9.04%) Shell Script
6 28 (8.16%) PowerShell
6 28 (8.16%) Ruby
7 24 (7.00%) SQL
8 22 (6.41%) Go
9 19 (5.54%) Rust
10 15 (4.37%) TypeScript
11 12 (3.50%) Groovy
11 12 (3.50%) PHP
12 10 (2.92%) C
13 9 (2.62%) C++
14 8 (2.33%) Perl
15 4 (1.17%) C#
15 4 (1.17%) Java 8
15 4 (1.17%) Korn
16 1 (0.29%) VB
Qualifications
1 97 (28.28%) Security Cleared
2 61 (17.78%) SC Cleared
3 31 (9.04%) DV Cleared
4 16 (4.66%) Sun Certification
5 15 (4.37%) OCPJP
6 5 (1.46%) Microsoft Certification
7 3 (0.87%) AWS Certification
7 3 (0.87%) MCSA
7 3 (0.87%) MCSE
7 3 (0.87%) VMware Certified Professional (VCP)
8 2 (0.58%) DBS Check
8 2 (0.58%) Degree
8 2 (0.58%) ISTQB
9 1 (0.29%) BPSS Clearance
9 1 (0.29%) CCNA
9 1 (0.29%) CEH
9 1 (0.29%) Cisco Certification
9 1 (0.29%) Computer Science Degree
9 1 (0.29%) ISEB
9 1 (0.29%) MCITP
Quality Assurance & Compliance
1 16 (4.66%) NCSC
1 16 (4.66%) NIST
2 7 (2.04%) QA
3 4 (1.17%) Disclosure Scotland
4 1 (0.29%) ISO/IEC 27001
System Software
1 75 (21.87%) Docker
2 67 (19.53%) Active Directory
3 27 (7.87%) VMware Infrastructure
4 14 (4.08%) Hyper-V
5 11 (3.21%) vSphere
6 6 (1.75%) ISA Server
6 6 (1.75%) NFS
6 6 (1.75%) Snort
6 6 (1.75%) Xen
7 5 (1.46%) KVM
8 4 (1.17%) VMware ESXi
9 3 (0.87%) vCloud
9 3 (0.87%) Virtual Machines
9 3 (0.87%) VMware Server
10 2 (0.58%) Apache ZooKeeper
10 2 (0.58%) Samba
10 2 (0.58%) Squid
11 1 (0.29%) Firmware
11 1 (0.29%) Oracle RAC
11 1 (0.29%) Varnish
Systems Management
1 149 (43.44%) Terraform
2 140 (40.82%) Ansible
3 120 (34.99%) Puppet
4 74 (21.57%) Kubernetes
5 66 (19.24%) Opscode Chef
6 57 (16.62%) Packer
7 34 (9.91%) Grafana
8 31 (9.04%) Prometheus
9 21 (6.12%) SCCM
10 20 (5.83%) Nagios
11 19 (5.54%) Rancher
12 16 (4.66%) Consul
13 12 (3.50%) vRealize
14 9 (2.62%) Norton AntiVirus
14 9 (2.62%) vCenter Server
15 8 (2.33%) HAProxy
15 8 (2.33%) ZABBIX
16 5 (1.46%) Rsyslog
17 4 (1.17%) SCOM
18 2 (0.58%) Cacti
Vendors
1 136 (39.65%) Red Hat
2 60 (17.49%) VMware
3 43 (12.54%) Oracle
4 34 (9.91%) Microsoft
5 30 (8.75%) Splunk
6 23 (6.71%) NetApp
7 19 (5.54%) Veracode
8 18 (5.25%) Cisco
9 15 (4.37%) Sun
10 14 (4.08%) Citrix
11 13 (3.79%) Black Duck
11 13 (3.79%) HP
12 11 (3.21%) Micro Focus
12 11 (3.21%) ServiceNow
13 9 (2.62%) AppDynamics
13 9 (2.62%) Google
13 9 (2.62%) Symantec
14 6 (1.75%) Cloudera
15 4 (1.17%) SAP
16 3 (0.87%) Dell