Period
to 22 April 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 22 April 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
22 Apr 2019
Same period 2018 Same period 2017
Rank 439 367 339
Rank change year-on-year -72 -28 +60
Contract jobs citing CentOS 455 617 615
As % of all contract IT jobs advertised in England 0.52% 0.67% 0.72%
As % of the Operating Systems category 2.58% 3.19% 3.52%
Number of daily rates quoted 288 436 461
England median daily rate £500 £500 £475
Median daily rate % change year-on-year - +5.26% +5.56%
10th Percentile £358 £325 £325
90th Percentile £625 £638 £600
UK median daily rate £500 £500 £475
% change year-on-year - +5.26% +5.56%
Number of hourly rates quoted 4 4 7
England median hourly rate £16.86 £51.00 £17.50
Median hourly rate % change year-on-year -66.94% +191.43% -65.00%
10th Percentile £16.04 £26.18 £14.13
90th Percentile £29.81 £82.63 £30.75
UK median hourly rate £16.86 £51.00 £17.50
% change year-on-year -66.94% +191.43% -65.00%

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 17,666 19,342 17,460
As % of all contract IT jobs advertised in England 20.21% 20.87% 20.49%
Number of daily rates quoted 11,281 12,342 11,145
England median daily rate £438 £440 £425
Median daily rate % change year-on-year -0.57% +3.53% +6.25%
10th Percentile £160 £183 £200
90th Percentile £625 £625 £588
UK median daily rate £425 £425 £420
% change year-on-year - +1.19% +5.00%
Number of hourly rates quoted 1,035 1,185 1,060
England median hourly rate £17.43 £17.14 £16.64
Median hourly rate % change year-on-year +1.72% +2.97% -2.12%
10th Percentile £11.17 £11.17 £10.50
90th Percentile £48.75 £47.50 £47.00
UK median hourly rate £17.06 £17.00 £16.50
% change year-on-year +0.35% +3.03% -2.94%

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 22 April 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 22 April 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 22 April 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 -103 169 £513 -2.38% 22
North of England +37 96 £450 +7.14% 13
South West -25 69 £515 +14.44% 5
South East -18 57 £475 -9.52% 12
Yorkshire +9 38 £475 +13.10% 4
North West +1 34 £450 +4.05% 5
East of England +42 33 £500 +17.65% 8
Midlands -5 27 £394 -21.25% 1
North East +19 25 £400 - 4
East Midlands +12 16 £388 -22.50% 1
West Midlands -3 10 £400 +6.67%
CentOS
UK

For the 6 months to 22 April 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.

1 455 (100.00%) Linux
2 215 (47.25%) Red Hat Enterprise Linux
2 215 (47.25%) Amazon AWS
3 200 (43.96%) Red Hat
4 194 (42.64%) Jenkins
5 186 (40.88%) DevOps
6 181 (39.78%) Python
7 162 (35.60%) Docker
8 161 (35.38%) Agile Software Development
9 158 (34.73%) Terraform
10 135 (29.67%) Puppet
11 134 (29.45%) Kubernetes
12 130 (28.57%) Ansible
12 130 (28.57%) Windows
13 124 (27.25%) Bash Shell
14 121 (26.59%) Git (software)
15 105 (23.08%) Unix
16 104 (22.86%) Security Cleared
17 100 (21.98%) Microsoft Azure
18 99 (21.76%) Java
19 91 (20.00%) MySQL
20 89 (19.56%) Ubuntu
21 88 (19.34%) JIRA
22 84 (18.46%) Microservices
23 80 (17.58%) VMware
24 79 (17.36%) MongoDB
25 75 (16.48%) SC Cleared
26 73 (16.04%) Configuration Management
26 73 (16.04%) Packer
27 70 (15.38%) Elastic Stack

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 (8.13%) Confluence
2 35 (7.69%) nginx
3 17 (3.74%) Apache
4 16 (3.52%) Tomcat
5 15 (3.30%) JBoss
5 15 (3.30%) Skype for Business
6 11 (2.42%) Elasticsearch
6 11 (2.42%) OpenStack
7 9 (1.98%) IIS
8 8 (1.76%) GeoServer
9 7 (1.54%) CMS
10 3 (0.66%) Apache Spark
10 3 (0.66%) MS Exchange
10 3 (0.66%) WebSphere
11 2 (0.44%) Drupal
11 2 (0.44%) SharePoint
11 2 (0.44%) WebLogic
11 2 (0.44%) WordPress
12 1 (0.22%) GlassFish
12 1 (0.22%) Jetty
Applications
1 15 (3.30%) Chatbot
2 1 (0.22%) HipChat
2 1 (0.22%) Houdini
2 1 (0.22%) Maya
2 1 (0.22%) Microsoft PowerPoint
2 1 (0.22%) NUKE
2 1 (0.22%) Photoshop
Cloud Services
1 215 (47.25%) Amazon AWS
2 100 (21.98%) Microsoft Azure
3 64 (14.07%) Amazon EC2
4 52 (11.43%) Amazon S3
5 47 (10.33%) Virtual Private Cloud
6 33 (7.25%) IaaS
6 33 (7.25%) Route 53
7 29 (6.37%) PaaS
8 27 (5.93%) Amazon ELB
9 26 (5.71%) GitHub
10 25 (5.49%) Google Cloud Platform
11 18 (3.96%) AWS CloudFormation
12 15 (3.30%) Apigee
12 15 (3.30%) OpenShift
13 12 (2.64%) SaaS
14 11 (2.42%) AWS Lambda
14 11 (2.42%) Serverless
15 10 (2.20%) Azure Active Directory
16 9 (1.98%) npm
16 9 (1.98%) Slack
Communications & Networking
1 45 (9.89%) HTTP
2 42 (9.23%) Firewall
3 36 (7.91%) DNS
4 26 (5.71%) SSL
5 22 (4.84%) VPN
6 19 (4.18%) SAN
7 18 (3.96%) LAN
8 17 (3.74%) WAN
9 15 (3.30%) Skype
10 13 (2.86%) DHCP
11 12 (2.64%) VLAN
12 11 (2.42%) TCP/IP
13 9 (1.98%) IPsec
14 8 (1.76%) Internet
15 7 (1.54%) DMZ
15 7 (1.54%) FTP
15 7 (1.54%) NetScaler
15 7 (1.54%) Network Security
16 6 (1.32%) Wireless
17 5 (1.10%) IMAP
Database & Business Intelligence
1 91 (20.00%) MySQL
2 79 (17.36%) MongoDB
3 50 (10.99%) PostgreSQL
4 34 (7.47%) Oracle Database
5 28 (6.15%) Amazon RDS
6 27 (5.93%) Apache Cassandra
7 23 (5.05%) SQL Server
8 14 (3.08%) Redis
9 8 (1.76%) Hadoop
10 6 (1.32%) Amazon Athena
10 6 (1.32%) Amazon Redshift
10 6 (1.32%) MariaDB
10 6 (1.32%) Relational Database
11 5 (1.10%) Azure SQL Database
11 5 (1.10%) Big Data
12 4 (0.88%) Amazon DynamoDB
12 4 (0.88%) Electronic Patient Records
13 3 (0.66%) Data Warehouse
13 3 (0.66%) HBase
13 3 (0.66%) RDBMS
Development Applications
1 194 (42.64%) Jenkins
2 121 (26.59%) Git (software)
3 88 (19.34%) JIRA
4 43 (9.45%) SonarQube
5 32 (7.03%) GitLab
6 30 (6.59%) JUnit
7 26 (5.71%) SoapUI
8 20 (4.40%) Vagrant
9 19 (4.18%) Artifactory
10 17 (3.74%) Maven
10 17 (3.74%) Sonatype Nexus
11 14 (3.08%) Bitbucket
12 13 (2.86%) CircleCI
13 9 (1.98%) Babel
13 9 (1.98%) MSBuild
13 9 (1.98%) webpack
14 7 (1.54%) Atlassian Bamboo
14 7 (1.54%) Gerrit
15 6 (1.32%) JMeter
15 6 (1.32%) TeamCity
General
1 20 (4.40%) Finance
2 7 (1.54%) Marketing
2 7 (1.54%) Telecoms
3 5 (1.10%) Electronics
3 5 (1.10%) Manufacturing
4 4 (0.88%) Banking
4 4 (0.88%) Games
5 3 (0.66%) Advertising
6 2 (0.44%) Billing
6 2 (0.44%) Publishing
6 2 (0.44%) Retail
7 1 (0.22%) Back Office
7 1 (0.22%) Mandarin Language
Job Titles
1 117 (25.71%) DevOps Engineer
2 75 (16.48%) Administrator
3 70 (15.38%) Developer
4 61 (13.41%) Systems Administrator
5 51 (11.21%) Linux Administrator
6 44 (9.67%) AWS Engineer
7 41 (9.01%) Linux Systems Administrator
8 38 (8.35%) Linux Engineer
9 35 (7.69%) Java Developer
10 34 (7.47%) AWS DevOps
11 24 (5.27%) AWS DevOps Engineer
12 23 (5.05%) Infrastructure Engineer
13 21 (4.62%) Architect
13 21 (4.62%) Platform Engineer
14 20 (4.40%) Systems Engineer
15 17 (3.74%) Lead Developer
15 17 (3.74%) Lead Java Developer
16 16 (3.52%) Unix Administrator
17 14 (3.08%) Network Engineer
17 14 (3.08%) Unix Systems Administrator
Libraries, Frameworks & Software Standards
1 70 (15.38%) Elastic Stack
2 56 (12.31%) Node.js
3 49 (10.77%) SOAP
4 46 (10.11%) Kafka
5 36 (7.91%) JSON
6 33 (7.25%) HTML
7 29 (6.37%) RESTful
8 28 (6.15%) XML
9 26 (5.71%) Spring
10 23 (5.05%) HTML5
11 22 (4.84%) .NET
11 22 (4.84%) React
12 21 (4.62%) RabbitMQ
12 21 (4.62%) Spring Boot
12 21 (4.62%) Web Services
13 19 (4.18%) jQuery
14 18 (3.96%) LDAP
14 18 (3.96%) Sensu
15 17 (3.74%) AngularJS
16 15 (3.30%) SignalR
Miscellaneous
1 27 (5.93%) Analytical Skills
2 25 (5.49%) Management Information System
3 20 (4.40%) Data Centre
4 19 (4.18%) Device Driver
5 18 (3.96%) Public Cloud
6 17 (3.74%) Cloud Native
7 15 (3.30%) Mobile App
8 13 (2.86%) Self-Motivation
9 12 (2.64%) Blog
10 11 (2.42%) PKI
11 9 (1.98%) Replication
12 8 (1.76%) Fintech
12 8 (1.76%) Private Cloud
13 7 (1.54%) CMDB
13 7 (1.54%) Greenfield Project
14 6 (1.32%) Linux Command Line
15 5 (1.10%) Enterprise Software
16 4 (0.88%) Distributed Denial-of-Service
16 4 (0.88%) Fat Client
16 4 (0.88%) Hybrid Cloud
Operating Systems
1 455 (100.00%) Linux
2 215 (47.25%) Red Hat Enterprise Linux
3 130 (28.57%) Windows
4 105 (23.08%) Unix
5 89 (19.56%) Ubuntu
6 49 (10.77%) Windows Server
7 32 (7.03%) Debian
8 31 (6.81%) Solaris
9 15 (3.30%) Windows Server 2012
10 14 (3.08%) Fedora
10 14 (3.08%) Windows Server 2008
11 13 (2.86%) CoreOS
12 10 (2.20%) Windows 7
13 6 (1.32%) SUSE
14 5 (1.10%) Oracle Linux
14 5 (1.10%) Windows 10
15 3 (0.66%) Android
15 3 (0.66%) DC/OS
16 2 (0.44%) AIX
16 2 (0.44%) Gentoo
Processes & Methodologies
1 186 (40.88%) DevOps
2 161 (35.38%) Agile Software Development
3 84 (18.46%) Microservices
4 73 (16.04%) Configuration Management
5 55 (12.09%) Scrum
6 43 (9.45%) Continuous Integration
7 38 (8.35%) High Availability
7 38 (8.35%) Open Source
7 38 (8.35%) TDD
8 37 (8.13%) Problem-Solving
9 34 (7.47%) BDD
9 34 (7.47%) Migration
10 31 (6.81%) Scaled Agile Framework
11 30 (6.59%) Infrastructure Monitoring
11 30 (6.59%) Software Engineering
12 28 (6.15%) Analytics
13 27 (5.93%) Immutable Infrastructure
13 27 (5.93%) Service Management
14 26 (5.71%) Infrastructure Engineering
15 23 (5.05%) Computer Science
Programming Languages
1 181 (39.78%) Python
2 124 (27.25%) Bash Shell
3 99 (21.76%) Java
4 55 (12.09%) JavaScript
5 52 (11.43%) SQL
6 51 (11.21%) PowerShell
7 39 (8.57%) Go
8 35 (7.69%) Shell Script
9 26 (5.71%) Perl
9 26 (5.71%) Ruby
10 24 (5.27%) PHP
11 18 (3.96%) Groovy
12 15 (3.30%) R
13 13 (2.86%) C#
13 13 (2.86%) Rust
14 11 (2.42%) Java 8
15 10 (2.20%) C
16 6 (1.32%) Korn
17 5 (1.10%) C++
18 1 (0.22%) Scala
Qualifications
1 104 (22.86%) Security Cleared
2 75 (16.48%) SC Cleared
3 29 (6.37%) DV Cleared
4 20 (4.40%) Degree
5 18 (3.96%) Computer Science Degree
6 9 (1.98%) Master's Degree
7 8 (1.76%) Microsoft Certification
7 8 (1.76%) OCPJP
7 8 (1.76%) Sun Certification
8 6 (1.32%) MCSA
9 4 (0.88%) MCSE
9 4 (0.88%) RHCE
10 3 (0.66%) VMware Certified Professional (VCP)
11 2 (0.44%) AWS Certification
11 2 (0.44%) CCNA
11 2 (0.44%) Cisco Certification
11 2 (0.44%) ITIL Foundation Certificate
12 1 (0.22%) ISEB
12 1 (0.22%) RHCA
12 1 (0.22%) RHCT
Quality Assurance & Compliance
1 5 (1.10%) QA
2 3 (0.66%) ISO/IEC 27001
System Software
1 162 (35.60%) Docker
2 68 (14.95%) Active Directory
3 55 (12.09%) VMware Infrastructure
4 16 (3.52%) Hyper-V
4 16 (3.52%) KVM
5 15 (3.30%) VMware ESXi
6 10 (2.20%) Squid
7 9 (1.98%) Virtual Machines
7 9 (1.98%) Xen
7 9 (1.98%) XenDesktop
8 8 (1.76%) NFS
8 8 (1.76%) Snort
8 8 (1.76%) vSphere
9 6 (1.32%) Samba
9 6 (1.32%) VirtualBox
10 4 (0.88%) Varnish
11 3 (0.66%) Apache ZooKeeper
11 3 (0.66%) iptables
11 3 (0.66%) Oracle RAC
11 3 (0.66%) Terminal Server
Systems Management
1 158 (34.73%) Terraform
2 135 (29.67%) Puppet
3 134 (29.45%) Kubernetes
4 130 (28.57%) Ansible
5 73 (16.04%) Packer
6 61 (13.41%) Grafana
7 55 (12.09%) Prometheus
8 53 (11.65%) Opscode Chef
9 44 (9.67%) Nagios
10 28 (6.15%) Icinga
11 20 (4.40%) SCCM
12 17 (3.74%) Consul
12 17 (3.74%) HAProxy
13 16 (3.52%) Rancher
14 12 (2.64%) Docker Swarm
15 10 (2.20%) ZABBIX
16 8 (1.76%) FortiGate
16 8 (1.76%) Kibana
16 8 (1.76%) vRealize
17 7 (1.54%) Graphite
Vendors
1 200 (43.96%) Red Hat
2 80 (17.58%) VMware
3 68 (14.95%) Microsoft
4 61 (13.41%) Oracle
5 42 (9.23%) ServiceNow
6 32 (7.03%) Cisco
7 30 (6.59%) Google
8 23 (5.05%) Citrix
9 22 (4.84%) Splunk
10 20 (4.40%) Atlassian
10 20 (4.40%) Black Duck
11 13 (2.86%) Veracode
12 12 (2.64%) HP
13 10 (2.20%) AppDynamics
14 8 (1.76%) CA
14 8 (1.76%) Dynatrace
14 8 (1.76%) Micro Focus
14 8 (1.76%) Sun
15 7 (1.54%) Dell
16 6 (1.32%) McAfee