Period
to 22 November 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 22 November 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
22 Nov 2019
Same period 2018 Same period 2017
Rank 329 341 419
Rank change year-on-year +12 +78 -30
Contract jobs citing CentOS 302 362 252
As % of all contract IT jobs advertised in the UK excluding London 0.67% 0.65% 0.47%
As % of the Operating Systems category 2.83% 2.99% 2.20%
Number of daily rates quoted 181 234 173
UK excluding London median daily rate £495 £450 £420
Median daily rate % change year-on-year +10.00% +7.14% -3.11%
10th Percentile £300 £363 £310
90th Percentile £600 £600 £573
UK median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% -2.70%
Number of hourly rates quoted 3 5 8
UK excluding London median hourly rate £35.00 £41.83 £35.00
Median hourly rate % change year-on-year -16.32% +19.50% +159.26%
UK median hourly rate £23.75 £44.58 £32.88
% change year-on-year -46.72% +35.60% +122.88%

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 10,660 12,092 11,437
As % of all contract IT jobs advertised in the UK excluding London 23.76% 21.87% 21.24%
Number of daily rates quoted 6,153 6,772 6,603
UK excluding London median daily rate £390 £388 £375
Median daily rate % change year-on-year +0.65% +3.33% +1.35%
10th Percentile £133 £150 £150
90th Percentile £575 £550 £538
UK median daily rate £423 £425 £425
% change year-on-year -0.47% - +6.25%
Number of hourly rates quoted 1,018 1,158 1,015
UK excluding London median hourly rate £17.07 £16.50 £16.50
Median hourly rate % change year-on-year +3.45% - +6.45%
10th Percentile £11.17 £10.92 £10.75
90th Percentile £48.75 £47.00 £47.50
UK median hourly rate £17.50 £17.50 £17.50

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 22 November 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 22 November 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 22 November 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 -26 68 £500 +8.11% 27
Midlands +82 52 £444 +10.94% 20
South West +6 51 £468 +13.33% 18
South East -2 47 £463 +2.78% 41
Scotland +56 45 £550 +10.00% 9
North West -11 33 £475 +5.56% 16
West Midlands +75 32 £475 +22.58% 17
East of England +10 27 £438 +0.57% 3
Yorkshire +29 22 £538 +19.44% 9
East Midlands +28 20 £350 -12.50% 3
North East -10 13 £495 -5.71% 2
Wales - 13 £425 - 7
CentOS
UK

For the 6 months to 22 November 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.

1 302 (100.00%) Linux
2 160 (52.98%) DevOps
3 140 (46.36%) Ansible
4 134 (44.37%) Red Hat Enterprise Linux
5 132 (43.71%) AWS
6 124 (41.06%) Terraform
7 110 (36.42%) Red Hat
8 106 (35.10%) Jenkins
9 105 (34.77%) Python
10 98 (32.45%) Security Cleared
11 96 (31.79%) Puppet
12 87 (28.81%) Bash Shell
13 82 (27.15%) Agile Software Development
14 81 (26.82%) Ubuntu
15 76 (25.17%) MySQL
16 75 (24.83%) Git (software)
16 75 (24.83%) Microservices
17 71 (23.51%) Windows
18 67 (22.19%) Azure
19 65 (21.52%) SC Cleared
20 64 (21.19%) Java
21 62 (20.53%) Configuration Management
22 61 (20.20%) VMware
23 57 (18.87%) Infrastructure as Code
24 56 (18.54%) Opscode Chef
25 54 (17.88%) Kubernetes
26 48 (15.89%) Docker
27 45 (14.90%) Public Cloud
28 44 (14.57%) Public Sector
29 39 (12.91%) Apache

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 39 (12.91%) Apache
2 23 (7.62%) Tomcat
3 17 (5.63%) Apache Spark
4 16 (5.30%) nginx
5 11 (3.64%) Confluence
6 10 (3.31%) JBoss
7 8 (2.65%) SharePoint
8 7 (2.32%) Jupyter
8 7 (2.32%) SAS
9 6 (1.99%) OpenStack
10 5 (1.66%) IIS
11 3 (0.99%) Elasticsearch
12 2 (0.66%) MS Exchange
12 2 (0.66%) SharePoint 2010
12 2 (0.66%) SharePoint 2013
13 1 (0.33%) Apache Pig
13 1 (0.33%) Exchange Server 2010
13 1 (0.33%) Exchange Server 2013
13 1 (0.33%) Skype for Business
13 1 (0.33%) WebLogic
Applications
1 7 (2.32%) Microsoft Office
2 1 (0.33%) Microsoft Project
2 1 (0.33%) MS Visio
Business Applications
1 1 (0.33%) NetSuite
Cloud Services
1 132 (43.71%) AWS
2 67 (22.19%) Azure
3 36 (11.92%) GCP
4 27 (8.94%) Amazon EC2
4 27 (8.94%) Virtual Private Cloud
5 24 (7.95%) Amazon S3
6 23 (7.62%) Amazon CloudWatch
7 21 (6.95%) Route 53
8 20 (6.62%) AWS CloudFormation
9 13 (4.30%) Amazon EKS
10 12 (3.97%) Amazon ELB
10 12 (3.97%) Cloud Computing
11 9 (2.98%) CloudFront
12 8 (2.65%) Amazon EMR
13 5 (1.66%) AWS CloudTrail
13 5 (1.66%) IaaS
14 4 (1.32%) Google Docs
14 4 (1.32%) Office 365
14 4 (1.32%) OpenShift
14 4 (1.32%) Slack
Communications & Networking
1 28 (9.27%) DNS
2 26 (8.61%) Firewall
3 25 (8.28%) TCP/IP
4 21 (6.95%) VPN
5 20 (6.62%) SAN
6 18 (5.96%) LAN
6 18 (5.96%) WAN
7 14 (4.64%) HTTP
8 11 (3.64%) Internet
9 9 (2.98%) VLAN
10 7 (2.32%) DHCP
10 7 (2.32%) HTTPS
10 7 (2.32%) MPLS
10 7 (2.32%) Wireless
11 6 (1.99%) Ethernet
11 6 (1.99%) IGMP
11 6 (1.99%) Multicast
11 6 (1.99%) OSPF
12 5 (1.66%) Network Security
12 5 (1.66%) Skype
Database & Business Intelligence
1 76 (25.17%) MySQL
2 31 (10.26%) MariaDB
3 27 (8.94%) Amazon RDS
4 25 (8.28%) Hadoop
5 21 (6.95%) Big Data
6 17 (5.63%) MongoDB
7 16 (5.30%) Relational Database
8 14 (4.64%) PostgreSQL
9 13 (4.30%) Amazon Aurora
9 13 (4.30%) SQL Server
10 12 (3.97%) Apache Cassandra
11 9 (2.98%) Apache Hive
11 9 (2.98%) RDBMS
12 8 (2.65%) Impala
13 7 (2.32%) Apache Zeppelin
13 7 (2.32%) Data Lake
14 5 (1.66%) Cloudera CDH
14 5 (1.66%) Oracle Database
15 3 (0.99%) HBase
15 3 (0.99%) MySQL Workbench
Development Applications
1 106 (35.10%) Jenkins
2 75 (24.83%) Git (software)
3 34 (11.26%) JIRA
4 30 (9.93%) SonarQube
5 19 (6.29%) Vagrant
6 18 (5.96%) Sonatype Nexus
7 15 (4.97%) Artifactory
8 13 (4.30%) CircleCI
9 12 (3.97%) Maven
10 9 (2.98%) Bitbucket
11 8 (2.65%) Subversion
12 6 (1.99%) JUnit
13 5 (1.66%) Cucumber
13 5 (1.66%) FindBugs
13 5 (1.66%) GitLab
13 5 (1.66%) Log4j
13 5 (1.66%) Mercurial
14 4 (1.32%) Atlassian Bamboo
14 4 (1.32%) Bitbucket Server
15 3 (0.99%) SoapUI
General
1 44 (14.57%) Public Sector
2 15 (4.97%) Banking
3 11 (3.64%) Finance
4 8 (2.65%) Telecoms
5 7 (2.32%) Automotive
5 7 (2.32%) Back Office
6 5 (1.66%) Marketing
7 4 (1.32%) Electronics
7 4 (1.32%) Games
7 4 (1.32%) Manufacturing
7 4 (1.32%) Retail
8 3 (0.99%) Publishing
9 2 (0.66%) Legal
10 1 (0.33%) Advertising
Job Titles
1 103 (34.11%) DevOps Engineer
2 33 (10.93%) Developer
3 28 (9.27%) Administrator
4 27 (8.94%) Platform Engineer
5 25 (8.28%) Linux Engineer
6 24 (7.95%) Lead DevOps
7 22 (7.28%) Infrastructure Engineer
8 20 (6.62%) Senior DevOps
9 19 (6.29%) Cloud Engineer
9 19 (6.29%) Lead DevOps Engineer
9 19 (6.29%) Senior DevOps Engineer
10 17 (5.63%) Systems Administrator
11 15 (4.97%) Consultant
12 14 (4.64%) Lead Developer
13 13 (4.30%) Azure DevOps
13 13 (4.30%) Azure DevOps Engineer
13 13 (4.30%) Azure Engineer
13 13 (4.30%) Linux Administrator
14 12 (3.97%) Architect
14 12 (3.97%) Java Developer
Libraries, Frameworks & Software Standards
1 33 (10.93%) LAMP
2 32 (10.60%) .NET
3 22 (7.28%) Kafka
3 22 (7.28%) LDAP
3 22 (7.28%) Node.js
4 20 (6.62%) Spring
5 19 (6.29%) LEMP Stack
6 17 (5.63%) RabbitMQ
7 16 (5.30%) RESTful
8 14 (4.64%) Elastic Stack
8 14 (4.64%) Spring Boot
9 10 (3.31%) REST
10 7 (2.32%) AngularJS
10 7 (2.32%) Apache NiFi
10 7 (2.32%) Middleware
11 5 (1.66%) Laravel
11 5 (1.66%) Symfony
12 4 (1.32%) ActiveMQ
12 4 (1.32%) Apache Camel
12 4 (1.32%) Web Services
Miscellaneous
1 45 (14.90%) Public Cloud
2 18 (5.96%) Clustering
3 17 (5.63%) Data Centre
4 13 (4.30%) Cloud Native
5 6 (1.99%) Driving Licence
5 6 (1.99%) Self-Motivation
6 5 (1.66%) Replication
7 4 (1.32%) Algorithms
7 4 (1.32%) Cyberthreat
7 4 (1.32%) Data Structures
7 4 (1.32%) Management Information System
8 3 (0.99%) CMDB
9 2 (0.66%) Enterprise Storage
9 2 (0.66%) Linux Command Line
9 2 (0.66%) PKI
9 2 (0.66%) Private Cloud
10 1 (0.33%) Analytical Skills
10 1 (0.33%) Greenfield Project
10 1 (0.33%) Video Conferencing
10 1 (0.33%) Wiki
Operating Systems
1 302 (100.00%) Linux
2 134 (44.37%) Red Hat Enterprise Linux
3 81 (26.82%) Ubuntu
4 71 (23.51%) Windows
5 38 (12.58%) Windows Server
6 35 (11.59%) Unix
7 28 (9.27%) Windows Server 2012
8 27 (8.94%) Debian
9 24 (7.95%) Solaris
10 15 (4.97%) CoreOS
11 14 (4.64%) Windows Server 2008
12 10 (3.31%) Windows 7
13 6 (1.99%) Windows 10
14 4 (1.32%) VMS
15 2 (0.66%) Embedded Linux
15 2 (0.66%) Fedora
15 2 (0.66%) Mac OS X
15 2 (0.66%) Windows Server 2003
16 1 (0.33%) Amazon Linux
16 1 (0.33%) Mac OS
Processes & Methodologies
1 160 (52.98%) DevOps
2 82 (27.15%) Agile Software Development
3 75 (24.83%) Microservices
4 62 (20.53%) Configuration Management
5 57 (18.87%) Infrastructure as Code
6 37 (12.25%) Continuous Integration
7 36 (11.92%) Mentoring
8 33 (10.93%) Project Delivery
9 29 (9.60%) Infrastructure Engineering
9 29 (9.60%) Technical Leadership
10 27 (8.94%) Migration
11 26 (8.61%) Software Engineering
12 24 (7.95%) Service Management
13 23 (7.62%) Open Source
14 22 (7.28%) Load Balancing
14 22 (7.28%) Scrum
15 21 (6.95%) TDD
16 19 (6.29%) Problem-Solving
17 18 (5.96%) ITIL
17 18 (5.96%) Site Reliability Engineering
Programming Languages
1 105 (34.77%) Python
2 87 (28.81%) Bash Shell
3 64 (21.19%) Java
4 38 (12.58%) JavaScript
5 32 (10.60%) PHP
6 28 (9.27%) PowerShell
7 25 (8.28%) Shell Script
7 25 (8.28%) SQL
8 18 (5.96%) Perl
8 18 (5.96%) Ruby
9 13 (4.30%) C#
9 13 (4.30%) Go
9 13 (4.30%) Rust
10 10 (3.31%) C++
11 9 (2.98%) TypeScript
12 4 (1.32%) C
12 4 (1.32%) Groovy
13 2 (0.66%) PHP 7
14 1 (0.33%) ANSI SQL
14 1 (0.33%) Java 8
Qualifications
1 98 (32.45%) Security Cleared
2 65 (21.52%) SC Cleared
3 19 (6.29%) DV Cleared
4 10 (3.31%) Microsoft Certification
5 8 (2.65%) MCSE
6 7 (2.32%) VMware Certified Professional (VCP)
7 6 (1.99%) AWS Certification
7 6 (1.99%) ISTQB
7 6 (1.99%) MCSA
8 5 (1.66%) DBS Check
8 5 (1.66%) Degree
8 5 (1.66%) ISEB
8 5 (1.66%) RHCE
8 5 (1.66%) RHCSA
9 4 (1.32%) BPSS Clearance
10 3 (0.99%) CEH
10 3 (0.99%) PRINCE2 Certification
10 3 (0.99%) Sun Certification
11 2 (0.66%) Cisco Certification
11 2 (0.66%) OCPJP
Quality Assurance & Compliance
1 13 (4.30%) NCSC
1 13 (4.30%) NIST
2 7 (2.32%) Disclosure Scotland
3 6 (1.99%) QA
4 2 (0.66%) ISO/IEC 27001
5 1 (0.33%) SLA
System Software
1 48 (15.89%) Docker
2 38 (12.58%) Active Directory
3 33 (10.93%) VMware Infrastructure
4 30 (9.93%) Hyper-V
5 15 (4.97%) vSphere
6 9 (2.98%) VMware ESXi
7 8 (2.65%) Virtual Servers
8 7 (2.32%) Virtual Desktop
8 7 (2.32%) VMware Server
9 5 (1.66%) ISA Server
9 5 (1.66%) Snort
9 5 (1.66%) Virtual Machines
9 5 (1.66%) VirtualBox
10 4 (1.32%) KVM
10 4 (1.32%) NFS
11 3 (0.99%) vCloud
12 2 (0.66%) Firmware
12 2 (0.66%) Samba
12 2 (0.66%) Xen
13 1 (0.33%) Microsoft Virtual Server
Systems Management
1 140 (46.36%) Ansible
2 124 (41.06%) Terraform
3 96 (31.79%) Puppet
4 56 (18.54%) Opscode Chef
5 54 (17.88%) Kubernetes
6 35 (11.59%) Packer
7 34 (11.26%) Nagios
8 27 (8.94%) Grafana
9 24 (7.95%) Prometheus
10 20 (6.62%) SCCM
11 16 (5.30%) HAProxy
12 14 (4.64%) Consul
13 12 (3.97%) Rancher
14 10 (3.31%) SCOM
15 9 (2.98%) WSUS
16 8 (2.65%) Oozie
17 7 (2.32%) Salt
17 7 (2.32%) vCenter Server
17 7 (2.32%) vRealize
17 7 (2.32%) ZABBIX
Vendors
1 110 (36.42%) Red Hat
2 61 (20.20%) VMware
3 31 (10.26%) Microsoft
4 21 (6.95%) Cloudera
5 18 (5.96%) Splunk
6 16 (5.30%) Hortonworks
6 16 (5.30%) Oracle
7 15 (4.97%) Google
7 15 (4.97%) NetApp
8 13 (4.30%) Confluent
8 13 (4.30%) Veracode
9 10 (3.31%) Cisco
9 10 (3.31%) HP
10 9 (2.98%) ANSYS
11 8 (2.65%) Symantec
11 8 (2.65%) Veeam
12 7 (2.32%) StreamSets
13 5 (1.66%) SolarWinds
14 4 (1.32%) IBM
14 4 (1.32%) SAP