Period
to 14 November 2019

The following table provides summary statistics for contract job vacancies advertised in England 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 14 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 > England
6 months to
14 Nov 2019
Same period 2018 Same period 2017
Rank 424 381 390
Rank change year-on-year -43 +9 -78
Contract jobs citing CentOS 390 620 580
As % of all contract IT jobs advertised in England 0.51% 0.65% 0.61%
As % of the Operating Systems category 2.47% 3.08% 2.92%
Number of daily rates quoted 245 395 427
England median daily rate £500 £475 £458
Median daily rate % change year-on-year +5.26% +3.83% -1.08%
10th Percentile £313 £363 £313
90th Percentile £633 £625 £583
UK median daily rate £500 £488 £456
% change year-on-year +2.56% +6.85% -1.35%
Number of hourly rates quoted 2 6 15
England median hourly rate £25.88 £44.58 £35.00
Median hourly rate % change year-on-year -41.96% +27.36% +118.75%
10th Percentile £18.03 £26.32 £17.00
90th Percentile £33.24 £55.00 £49.50
UK median hourly rate £29.38 £44.58 £35.00
% change year-on-year -34.10% +27.36% +118.75%

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 England with a requirement for operating system skills.

All Operating Systems
England
Contract vacancies with a requirement for operating system skills 15,790 20,114 19,877
As % of all contract IT jobs advertised in England 20.54% 21.08% 20.98%
Number of daily rates quoted 9,903 12,516 12,745
England median daily rate £425 £425 £425
10th Percentile £150 £165 £175
90th Percentile £619 £613 £600
UK median daily rate £425 £425 £425
Number of hourly rates quoted 1,098 1,383 1,215
England median hourly rate £17.50 £17.50 £17.50
10th Percentile £11.24 £11.17 £11.00
90th Percentile £50.55 £47.50 £47.83
UK median hourly rate £17.50 £17.50 £17.50

CentOS
Job Vacancy Trend in England

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

Job vacancy trend for CentOS in England

CentOS
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for CentOS in England

CentOS
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing CentOS in England over the 6 months to 14 November 2019.

Contractor daily rate histogram for CentOS in England

CentOS
Contractor Hourly Rate Trend in England

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

Contractor hourly rate trend for CentOS in England

CentOS
Contractor Hourly Rate Histogram in England

The hourly rate distribution of IT jobs citing CentOS in England over the 6 months to 14 November 2019.

Contractor hourly rate histogram for CentOS in England

CentOS
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the England region over the 6 months to 14 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
London -37 135 £525 - 45
North of England -21 69 £500 +5.26% 17
South West +22 56 £460 +11.52% 20
Midlands +77 51 £400 - 14
South East -11 44 £450 +1.12% 46
East of England +12 35 £498 +14.37% 8
North West -25 34 £513 +10.81% 10
West Midlands +56 29 £438 +12.90% 11
East Midlands +32 22 £350 -12.50% 3
Yorkshire +20 21 £544 +20.83% 6
North East -6 14 £495 -5.71% 1
CentOS
UK

For the 6 months to 14 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 England region with a requirement for CentOS.

1 390 (100.00%) Linux
2 198 (50.77%) DevOps
3 186 (47.69%) Red Hat Enterprise Linux
4 158 (40.51%) Red Hat
5 148 (37.95%) Ansible
6 147 (37.69%) Python
7 145 (37.18%) Jenkins
8 143 (36.67%) AWS
9 129 (33.08%) Security Cleared
10 123 (31.54%) Bash Shell
11 118 (30.26%) Ubuntu
11 118 (30.26%) Windows
12 117 (30.00%) Agile Software Development
12 117 (30.00%) Terraform
13 102 (26.15%) Git (software)
14 100 (25.64%) Puppet
15 95 (24.36%) Java
16 94 (24.10%) Azure
17 92 (23.59%) Docker
18 87 (22.31%) Kubernetes
19 84 (21.54%) VMware
20 83 (21.28%) Configuration Management
21 79 (20.26%) SC Cleared
22 75 (19.23%) MySQL
23 70 (17.95%) Continuous Integration
24 68 (17.44%) JIRA
24 68 (17.44%) Opscode Chef
25 63 (16.15%) Microservices
26 59 (15.13%) Microsoft
26 59 (15.13%) Active Directory

CentOS
Co-occurring IT Skills in England 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 37 (9.49%) Apache
2 32 (8.21%) Tomcat
3 29 (7.44%) Confluence
4 28 (7.18%) nginx
5 21 (5.38%) Apache Spark
6 16 (4.10%) OpenStack
7 15 (3.85%) Elasticsearch
8 14 (3.59%) JBoss
9 8 (2.05%) SharePoint
10 7 (1.79%) IIS
10 7 (1.79%) Jetty
10 7 (1.79%) Jupyter
10 7 (1.79%) SAS
10 7 (1.79%) WebLogic
11 6 (1.54%) Oracle Self-Service HR
12 2 (0.51%) MS Exchange
12 2 (0.51%) SharePoint 2010
12 2 (0.51%) SharePoint 2013
12 2 (0.51%) Skype for Business
12 2 (0.51%) WebSphere
Applications
1 12 (3.08%) Microsoft Office
2 4 (1.03%) Microsoft Excel
3 1 (0.26%) Microsoft Project
Business Applications
1 1 (0.26%) NetSuite
1 1 (0.26%) Sparx Enterprise Architect
Cloud Services
1 143 (36.67%) AWS
2 94 (24.10%) Azure
3 54 (13.85%) GCP
4 30 (7.69%) Amazon EC2
5 28 (7.18%) Virtual Private Cloud
6 24 (6.15%) Amazon S3
7 23 (5.90%) AWS CloudFormation
8 22 (5.64%) Route 53
9 16 (4.10%) Amazon CloudWatch
9 16 (4.10%) GitHub
10 14 (3.59%) Cloud Computing
11 13 (3.33%) Office 365
12 12 (3.08%) Amazon EKS
12 12 (3.08%) Amazon ELB
13 10 (2.56%) CloudFront
14 9 (2.31%) OpenShift
15 8 (2.05%) Amazon EMR
15 8 (2.05%) PaaS
16 7 (1.79%) IaaS
17 5 (1.28%) AWS CloudTrail
Communications & Networking
1 44 (11.28%) Firewall
2 35 (8.97%) DNS
2 35 (8.97%) TCP/IP
3 32 (8.21%) VPN
4 26 (6.67%) SAN
5 24 (6.15%) WAN
6 20 (5.13%) HTTP
6 20 (5.13%) LAN
7 16 (4.10%) SSH
8 11 (2.82%) DHCP
8 11 (2.82%) Wireless
9 10 (2.56%) Internet
9 10 (2.56%) VLAN
10 8 (2.05%) MPLS
11 7 (1.79%) Ethernet
11 7 (1.79%) HTTPS
11 7 (1.79%) IGMP
11 7 (1.79%) Kerberos
11 7 (1.79%) Network Security
11 7 (1.79%) OSPF
Database & Business Intelligence
1 75 (19.23%) MySQL
2 36 (9.23%) Hadoop
2 36 (9.23%) PostgreSQL
3 30 (7.69%) Big Data
4 29 (7.44%) SQL Server
5 26 (6.67%) MongoDB
6 17 (4.36%) Amazon RDS
7 16 (4.10%) Apache Cassandra
7 16 (4.10%) Oracle Database
8 14 (3.59%) Relational Database
9 9 (2.31%) Data Lake
9 9 (2.31%) MariaDB
10 8 (2.05%) Apache Hive
10 8 (2.05%) Cloudera CDH
11 7 (1.79%) Apache Zeppelin
11 7 (1.79%) Impala
11 7 (1.79%) RDBMS
12 5 (1.28%) Amazon Aurora
12 5 (1.28%) NoSQL
13 4 (1.03%) HBase
Development Applications
1 145 (37.18%) Jenkins
2 102 (26.15%) Git (software)
3 68 (17.44%) JIRA
4 32 (8.21%) Maven
5 30 (7.69%) Vagrant
6 28 (7.18%) SonarQube
7 23 (5.90%) Subversion
8 22 (5.64%) Bitbucket
8 22 (5.64%) Sonatype Nexus
9 17 (4.36%) Mercurial
10 15 (3.85%) Artifactory
11 12 (3.08%) CircleCI
11 12 (3.08%) Cucumber
12 11 (2.82%) Atlassian Bamboo
12 11 (2.82%) FindBugs
12 11 (2.82%) GitLab
12 11 (2.82%) JUnit
12 11 (2.82%) Log4j
13 9 (2.31%) Eclipse
13 9 (2.31%) Hudson
General
1 36 (9.23%) Public Sector
2 19 (4.87%) Finance
3 17 (4.36%) Banking
4 11 (2.82%) Back Office
5 8 (2.05%) Automotive
6 6 (1.54%) Games
7 4 (1.03%) Retail
7 4 (1.03%) Telecoms
8 1 (0.26%) Law
Job Titles
1 108 (27.69%) DevOps Engineer
2 41 (10.51%) Administrator
2 41 (10.51%) Linux Engineer
3 35 (8.97%) Developer
4 31 (7.95%) Infrastructure Engineer
5 28 (7.18%) Platform Engineer
6 25 (6.41%) Senior DevOps
7 24 (6.15%) Senior DevOps Engineer
8 23 (5.90%) Linux/Unix DevOps
8 23 (5.90%) Systems Administrator
9 22 (5.64%) Cloud Engineer
10 20 (5.13%) Linux Administrator
11 19 (4.87%) Architect
12 18 (4.62%) Linux DevOps Engineer
13 17 (4.36%) AWS Engineer
14 16 (4.10%) Java Developer
15 15 (3.85%) Linux Systems Administrator
16 13 (3.33%) Consultant
16 13 (3.33%) Software Engineer
17 11 (2.82%) Network Engineer
Libraries, Frameworks & Software Standards
1 41 (10.51%) RabbitMQ
2 36 (9.23%) .NET
3 30 (7.69%) Node.js
4 28 (7.18%) Spring
5 27 (6.92%) LAMP
6 24 (6.15%) Elastic Stack
7 23 (5.90%) Kafka
8 20 (5.13%) LEMP Stack
9 17 (4.36%) REST
10 14 (3.59%) LDAP
10 14 (3.59%) XML
11 13 (3.33%) AngularJS
12 12 (3.08%) JSON
13 11 (2.82%) ActiveMQ
13 11 (2.82%) Apache Camel
13 11 (2.82%) HTML
13 11 (2.82%) Middleware
14 10 (2.56%) Spring Boot
15 9 (2.31%) HTML5
15 9 (2.31%) Web Services
Miscellaneous
1 37 (9.49%) Public Cloud
2 22 (5.64%) Clustering
2 22 (5.64%) Data Centre
3 12 (3.08%) Cloud Native
4 11 (2.82%) Linux Command Line
5 8 (2.05%) User Experience
6 7 (1.79%) Analytical Skills
6 7 (1.79%) Driving Licence
6 7 (1.79%) Management Information System
6 7 (1.79%) Self-Motivation
7 6 (1.54%) Derivative
7 6 (1.54%) Replication
8 5 (1.28%) Algorithms
9 4 (1.03%) Cyberthreat
9 4 (1.03%) Data Structures
9 4 (1.03%) Hedge funds
9 4 (1.03%) PKI
10 3 (0.77%) CMDB
10 3 (0.77%) Mobile App
11 2 (0.51%) Enterprise Storage
Operating Systems
1 390 (100.00%) Linux
2 186 (47.69%) Red Hat Enterprise Linux
3 118 (30.26%) Ubuntu
3 118 (30.26%) Windows
4 56 (14.36%) Windows Server
5 54 (13.85%) Unix
6 44 (11.28%) Debian
7 37 (9.49%) Windows Server 2012
8 31 (7.95%) Solaris
9 20 (5.13%) Windows Server 2008
10 15 (3.85%) CoreOS
10 15 (3.85%) Mac OS X
11 12 (3.08%) Windows 7
12 10 (2.56%) Apple iOS
13 9 (2.31%) Android
14 8 (2.05%) Windows 10
15 4 (1.03%) AIX
15 4 (1.03%) Fedora
15 4 (1.03%) Mac OS X Server
16 3 (0.77%) VMS
Processes & Methodologies
1 198 (50.77%) DevOps
2 117 (30.00%) Agile Software Development
3 83 (21.28%) Configuration Management
4 70 (17.95%) Continuous Integration
5 63 (16.15%) Microservices
6 55 (14.10%) Scrum
7 42 (10.77%) Infrastructure Engineering
7 42 (10.77%) Project Delivery
8 40 (10.26%) ITIL
9 39 (10.00%) Test Automation
10 37 (9.49%) Infrastructure as Code
10 37 (9.49%) Software Engineering
11 34 (8.72%) Open Source
12 29 (7.44%) Kanban
13 28 (7.18%) Migration
14 27 (6.92%) Problem-Solving
15 26 (6.67%) Load Balancing
16 21 (5.38%) Site Reliability Engineering
16 21 (5.38%) TDD
17 19 (4.87%) Infrastructure Automation
Programming Languages
1 147 (37.69%) Python
2 123 (31.54%) Bash Shell
3 95 (24.36%) Java
4 36 (9.23%) JavaScript
5 35 (8.97%) SQL
6 34 (8.72%) PowerShell
7 30 (7.69%) Ruby
8 29 (7.44%) Groovy
8 29 (7.44%) Shell Script
9 28 (7.18%) C++
10 27 (6.92%) PHP
11 25 (6.41%) Perl
12 19 (4.87%) Go
13 16 (4.10%) C#
14 12 (3.08%) Rust
15 9 (2.31%) Clojure
16 8 (2.05%) PL/SQL
16 8 (2.05%) T-SQL
17 7 (1.79%) C
18 6 (1.54%) ClojureScript
Qualifications
1 129 (33.08%) Security Cleared
2 79 (20.26%) SC Cleared
3 31 (7.95%) DV Cleared
4 16 (4.10%) Microsoft Certification
5 9 (2.31%) MCSE
6 8 (2.05%) MCSA
6 8 (2.05%) Sun Certification
6 8 (2.05%) VMware Certified Professional (VCP)
7 7 (1.79%) Degree
7 7 (1.79%) OCPJP
8 6 (1.54%) ISTQB
9 5 (1.28%) BPSS Clearance
9 5 (1.28%) CCNA
9 5 (1.28%) CEH
9 5 (1.28%) Cisco Certification
9 5 (1.28%) DBS Check
9 5 (1.28%) ISEB
9 5 (1.28%) RHCE
9 5 (1.28%) RHCSA
10 4 (1.03%) MCITP
Quality Assurance & Compliance
1 5 (1.28%) ISO/IEC 27001
1 5 (1.28%) QA
2 4 (1.03%) Disclosure Scotland
3 3 (0.77%) PMO
3 3 (0.77%) SLA
4 2 (0.51%) COBIT
4 2 (0.51%) NIST
4 2 (0.51%) PCI DSS
4 2 (0.51%) Sarbanes-Oxley
5 1 (0.26%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
System Software
1 92 (23.59%) Docker
2 59 (15.13%) Active Directory
3 53 (13.59%) VMware Infrastructure
4 36 (9.23%) Hyper-V
5 15 (3.85%) vSphere
6 13 (3.33%) VMware ESXi
7 12 (3.08%) Virtual Servers
8 9 (2.31%) KVM
8 9 (2.31%) Virtual Machines
8 9 (2.31%) VirtualBox
9 7 (1.79%) Virtual Desktop
9 7 (1.79%) VMware Server
10 6 (1.54%) ISA Server
10 6 (1.54%) Snort
11 5 (1.28%) NFS
11 5 (1.28%) Samba
11 5 (1.28%) vCloud
12 4 (1.03%) pfSense
12 4 (1.03%) Xen
13 3 (0.77%) oVirt
Systems Management
1 148 (37.95%) Ansible
2 117 (30.00%) Terraform
3 100 (25.64%) Puppet
4 87 (22.31%) Kubernetes
5 68 (17.44%) Opscode Chef
6 35 (8.97%) Nagios
7 34 (8.72%) Packer
7 34 (8.72%) Prometheus
8 24 (6.15%) Consul
9 23 (5.90%) Grafana
10 20 (5.13%) HAProxy
11 18 (4.62%) SCCM
12 15 (3.85%) Salt
13 13 (3.33%) WSUS
14 12 (3.08%) Rancher
15 11 (2.82%) Norton AntiVirus
15 11 (2.82%) SCOM
15 11 (2.82%) vCenter Server
15 11 (2.82%) ZABBIX
16 10 (2.56%) logstash
Vendors
1 158 (40.51%) Red Hat
2 84 (21.54%) VMware
3 59 (15.13%) Microsoft
4 32 (8.21%) Cloudera
5 31 (7.95%) Oracle
6 25 (6.41%) Hortonworks
7 24 (6.15%) Cisco
7 24 (6.15%) Google
8 22 (5.64%) Splunk
9 19 (4.87%) HP
10 14 (3.59%) Atlassian
10 14 (3.59%) NetApp
10 14 (3.59%) Symantec
11 12 (3.08%) Confluent
11 12 (3.08%) Veracode
12 11 (2.82%) Citrix
12 11 (2.82%) SolarWinds
13 10 (2.56%) Juniper
13 10 (2.56%) Veeam
14 9 (2.31%) ANSYS