Period
to 17 August 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 17 August 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
17 Aug 2019
Same period 2018 Same period 2017
Rank 425 378 324
Rank change year-on-year -47 -54 +24
Contract jobs citing CentOS 446 610 655
As % of all contract IT jobs advertised in England 0.54% 0.65% 0.74%
As % of the Operating Systems category 2.66% 3.10% 3.60%
Number of daily rates quoted 269 391 474
England median daily rate £500 £500 £500
10th Percentile £325 £383 £348
90th Percentile £656 £625 £600
UK median daily rate £500 £500 £500
Number of hourly rates quoted 3 4 11
England median hourly rate £35.00 £51.00 £40.00
Median hourly rate % change year-on-year -31.37% +27.50% +196.30%
UK median hourly rate £35.00 £51.00 £40.00
% change year-on-year -31.37% +27.50% +196.30%

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 16,748 19,665 18,175
As % of all contract IT jobs advertised in England 20.14% 20.90% 20.60%
Number of daily rates quoted 10,593 12,333 11,491
England median daily rate £425 £438 £425
Median daily rate % change year-on-year -2.86% +2.94% +6.12%
10th Percentile £155 £181 £200
90th Percentile £625 £624 £594
UK median daily rate £425 £425 £425
Number of hourly rates quoted 1,035 1,368 1,062
England median hourly rate £17.50 £17.50 £17.38
Median hourly rate % change year-on-year - +0.68% +5.35%
10th Percentile £11.24 £11.17 £10.75
90th Percentile £50.00 £47.50 £47.83
UK median hourly rate £17.50 £17.50 £17.00
% change year-on-year - +2.94% +3.03%

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 17 August 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 17 August 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 17 August 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 -110 145 £525 -4.55% 50
North of England +32 81 £500 +3.04% 33
South West +25 80 £550 +33.33% 20
East of England +36 58 £525 +23.53% 7
Midlands +54 45 £438 - 18
South East -27 37 £413 -2.94% 25
North West +9 33 £550 +11.00% 18
Yorkshire +17 25 £550 +30.18% 5
West Midlands +37 24 £394 -4.55% 9
North East +25 23 £470 -14.55% 11
East Midlands +31 21 £500 +2.56% 9
CentOS
UK

For the 6 months to 17 August 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.

1 446 (100.00%) Linux
2 226 (50.67%) Amazon AWS
3 220 (49.33%) DevOps
4 204 (45.74%) Jenkins
5 197 (44.17%) Red Hat Enterprise Linux
6 194 (43.50%) Red Hat
7 168 (37.67%) Ansible
8 167 (37.44%) Python
9 162 (36.32%) Terraform
10 159 (35.65%) Agile Software Development
11 151 (33.86%) Git (software)
12 141 (31.61%) Kubernetes
13 139 (31.17%) Docker
14 130 (29.15%) Bash Shell
14 130 (29.15%) Java
15 121 (27.13%) Puppet
16 117 (26.23%) Security Cleared
17 115 (25.78%) JIRA
18 112 (25.11%) Microservices
19 109 (24.44%) Windows
20 104 (23.32%) Microsoft Azure
21 101 (22.65%) Unix
22 100 (22.42%) Ubuntu
23 96 (21.52%) MySQL
24 83 (18.61%) VMware
25 81 (18.16%) Scrum
25 81 (18.16%) Configuration Management
26 74 (16.59%) Continuous Integration
27 73 (16.37%) Active Directory
28 72 (16.14%) SC Cleared

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 38 (8.52%) Confluence
2 33 (7.40%) Apache
2 33 (7.40%) Tomcat
3 28 (6.28%) JBoss
4 24 (5.38%) OpenStack
5 23 (5.16%) nginx
6 15 (3.36%) Elasticsearch
7 11 (2.47%) Apache Spark
8 8 (1.79%) IIS
9 7 (1.57%) Jetty
10 6 (1.35%) WebLogic
11 5 (1.12%) Oracle Self-Service HR
12 3 (0.67%) GeoServer
12 3 (0.67%) Jupyter
12 3 (0.67%) SAS
12 3 (0.67%) SharePoint
12 3 (0.67%) WebSphere
13 2 (0.45%) Mailman
13 2 (0.45%) Mongrel
13 2 (0.45%) MS Exchange
Applications
1 6 (1.35%) Microsoft Office
2 4 (0.90%) Microsoft Excel
3 1 (0.22%) Microsoft PowerPoint
Business Applications
1 1 (0.22%) NetSuite
1 1 (0.22%) Sparx Enterprise Architect
Cloud Services
1 226 (50.67%) Amazon AWS
2 104 (23.32%) Microsoft Azure
3 55 (12.33%) Google Cloud Platform
4 54 (12.11%) Amazon EC2
5 48 (10.76%) Amazon S3
6 41 (9.19%) Virtual Private Cloud
7 38 (8.52%) Amazon EKS
8 37 (8.30%) Route 53
9 30 (6.73%) Amazon ELB
10 24 (5.38%) OpenShift
11 23 (5.16%) AWS CloudFormation
12 22 (4.93%) GitHub
13 19 (4.26%) Cloud Computing
14 17 (3.81%) PaaS
15 16 (3.59%) IaaS
16 14 (3.14%) Amazon CloudWatch
16 14 (3.14%) Azure Stack
17 11 (2.47%) Amazon ECS
18 8 (1.79%) CloudFront
19 5 (1.12%) Amazon SQS
Communications & Networking
1 38 (8.52%) HTTP
2 37 (8.30%) Firewall
3 35 (7.85%) DNS
4 34 (7.62%) SAN
4 34 (7.62%) WAN
5 32 (7.17%) LAN
6 31 (6.95%) VPN
7 27 (6.05%) TCP/IP
8 17 (3.81%) VLAN
9 15 (3.36%) MPLS
9 15 (3.36%) Wireless
10 13 (2.91%) Ethernet
10 13 (2.91%) IGMP
10 13 (2.91%) Multicast
10 13 (2.91%) OSPF
11 8 (1.79%) DHCP
11 8 (1.79%) HTTPS
11 8 (1.79%) OpenLDAP
11 8 (1.79%) SSH
12 7 (1.57%) Internet
Database & Business Intelligence
1 96 (21.52%) MySQL
2 58 (13.00%) MongoDB
3 53 (11.88%) PostgreSQL
4 45 (10.09%) Oracle Database
5 33 (7.40%) Apache Cassandra
6 31 (6.95%) Hadoop
7 29 (6.50%) SQL Server
8 24 (5.38%) Amazon RDS
9 19 (4.26%) Big Data
10 12 (2.69%) Relational Database
11 9 (2.02%) RDBMS
11 9 (2.02%) Redis
12 8 (1.79%) Amazon Aurora
13 7 (1.57%) Data Lake
13 7 (1.57%) HBase
14 5 (1.12%) Data Warehouse
14 5 (1.12%) NoSQL
15 4 (0.90%) Amazon DynamoDB
15 4 (0.90%) Apache Hive
15 4 (0.90%) MariaDB
Development Applications
1 204 (45.74%) Jenkins
2 151 (33.86%) Git (software)
3 115 (25.78%) JIRA
4 40 (8.97%) SonarQube
5 39 (8.74%) JUnit
6 37 (8.30%) Maven
7 35 (7.85%) Sonatype Nexus
8 31 (6.95%) SoapUI
9 30 (6.73%) Artifactory
10 28 (6.28%) CircleCI
11 26 (5.83%) Vagrant
12 25 (5.61%) GitLab
13 22 (4.93%) Bitbucket
14 17 (3.81%) Subversion
15 14 (3.14%) MSBuild
16 13 (2.91%) Mercurial
17 12 (2.69%) Hudson
18 11 (2.47%) Cucumber
18 11 (2.47%) Selenium
19 8 (1.79%) Ant
General
1 29 (6.50%) Finance
2 15 (3.36%) Banking
3 12 (2.69%) Back Office
4 6 (1.35%) Games
4 6 (1.35%) Telecoms
5 4 (0.90%) Retail
6 3 (0.67%) Automotive
7 1 (0.22%) Electronics
7 1 (0.22%) Manufacturing
7 1 (0.22%) Marketing
7 1 (0.22%) Retail Banking
Job Titles
1 133 (29.82%) DevOps Engineer
2 57 (12.78%) Developer
3 52 (11.66%) Administrator
4 39 (8.74%) Java Developer
4 39 (8.74%) Linux Engineer
5 36 (8.07%) Infrastructure Engineer
5 36 (8.07%) Systems Administrator
6 31 (6.95%) Linux Administrator
6 31 (6.95%) Platform Engineer
7 29 (6.50%) Cloud Engineer
8 28 (6.28%) AWS Engineer
9 25 (5.61%) Architect
9 25 (5.61%) Linux Systems Administrator
10 21 (4.71%) AWS DevOps
11 19 (4.26%) Linux/Unix DevOps
12 16 (3.59%) Lead Developer
12 16 (3.59%) Senior DevOps
13 15 (3.36%) AWS DevOps Engineer
13 15 (3.36%) Lead Java Developer
13 15 (3.36%) Network Engineer
Libraries, Frameworks & Software Standards
1 52 (11.66%) Kafka
2 49 (10.99%) Node.js
3 45 (10.09%) Elastic Stack
4 43 (9.64%) .NET
4 43 (9.64%) Spring
5 35 (7.85%) RabbitMQ
6 34 (7.62%) SOAP
7 30 (6.73%) Spring Boot
8 23 (5.16%) Middleware
9 16 (3.59%) LDAP
10 15 (3.36%) J2EE
10 15 (3.36%) LEMP Stack
11 14 (3.14%) LAMP
12 13 (2.91%) HTML
12 13 (2.91%) Web Services
13 12 (2.69%) ActiveMQ
13 12 (2.69%) Apache Camel
13 12 (2.69%) XML
14 11 (2.47%) LAPP Stack
15 10 (2.24%) REST
Miscellaneous
1 31 (6.95%) Cloud Native
2 25 (5.61%) Public Cloud
3 24 (5.38%) Data Centre
4 20 (4.48%) Clustering
5 17 (3.81%) Management Information System
5 17 (3.81%) Replication
6 13 (2.91%) Driving Licence
7 8 (1.79%) Analytical Skills
7 8 (1.79%) Device Driver
7 8 (1.79%) Greenfield Project
8 5 (1.12%) Derivative
8 5 (1.12%) User Experience
9 3 (0.67%) Blog
9 3 (0.67%) PKI
10 2 (0.45%) Cyber Defence
10 2 (0.45%) Equities
10 2 (0.45%) Hedge funds
10 2 (0.45%) Hybrid Cloud
10 2 (0.45%) NHS
10 2 (0.45%) Wiki
Operating Systems
1 446 (100.00%) Linux
2 197 (44.17%) Red Hat Enterprise Linux
3 109 (24.44%) Windows
4 101 (22.65%) Unix
5 100 (22.42%) Ubuntu
6 49 (10.99%) Windows Server
7 42 (9.42%) Debian
7 42 (9.42%) Solaris
8 29 (6.50%) CoreOS
9 26 (5.83%) Windows Server 2012
10 12 (2.69%) Windows Server 2008
11 11 (2.47%) Fedora
12 9 (2.02%) Mac OS X
13 6 (1.35%) Android
13 6 (1.35%) Apple iOS
13 6 (1.35%) Windows 7
14 4 (0.90%) Windows 10
15 3 (0.67%) AIX
15 3 (0.67%) Mesosphere
15 3 (0.67%) Windows Server 2003
Processes & Methodologies
1 220 (49.33%) DevOps
2 159 (35.65%) Agile Software Development
3 112 (25.11%) Microservices
4 81 (18.16%) Configuration Management
4 81 (18.16%) Scrum
5 74 (16.59%) Continuous Integration
6 55 (12.33%) TDD
7 45 (10.09%) Scaled Agile Framework
8 42 (9.42%) BDD
8 42 (9.42%) Software Engineering
9 41 (9.19%) Infrastructure Engineering
10 37 (8.30%) Kanban
11 36 (8.07%) Infrastructure Automation
12 32 (7.17%) Migration
12 32 (7.17%) Test Automation
13 30 (6.73%) Load Balancing
13 30 (6.73%) Problem-Solving
14 28 (6.28%) Open Source
15 27 (6.05%) Infrastructure as Code
15 27 (6.05%) The Twelve-Factor App
Programming Languages
1 167 (37.44%) Python
2 130 (29.15%) Bash Shell
2 130 (29.15%) Java
3 52 (11.66%) JavaScript
4 47 (10.54%) Go
5 38 (8.52%) Ruby
6 35 (7.85%) PowerShell
6 35 (7.85%) SQL
7 32 (7.17%) Groovy
7 32 (7.17%) Shell Script
8 28 (6.28%) Rust
9 20 (4.48%) Perl
10 17 (3.81%) C#
11 16 (3.59%) C++
12 14 (3.14%) C
12 14 (3.14%) PHP
13 7 (1.57%) Clojure
13 7 (1.57%) T-SQL
14 6 (1.35%) PL/SQL
14 6 (1.35%) Scala
Qualifications
1 117 (26.23%) Security Cleared
2 72 (16.14%) SC Cleared
3 34 (7.62%) DV Cleared
4 14 (3.14%) Sun Certification
5 13 (2.91%) OCPJP
6 9 (2.02%) Degree
7 8 (1.79%) Microsoft Certification
8 5 (1.12%) CEH
8 5 (1.12%) Computer Science Degree
8 5 (1.12%) MCSA
9 4 (0.90%) CISSP
9 4 (0.90%) DBS Check
9 4 (0.90%) MCSE
10 3 (0.67%) ISTQB
10 3 (0.67%) Master's Degree
10 3 (0.67%) RHCSA
10 3 (0.67%) VMware Certified Professional (VCP)
11 2 (0.45%) BPSS Clearance
11 2 (0.45%) MCITP
11 2 (0.45%) RHCE
Quality Assurance & Compliance
1 4 (0.90%) QA
2 2 (0.45%) ISO/IEC 27001
2 2 (0.45%) PMO
3 1 (0.22%) Disclosure Scotland
System Software
1 139 (31.17%) Docker
2 73 (16.37%) Active Directory
3 52 (11.66%) VMware Infrastructure
4 22 (4.93%) Hyper-V
5 12 (2.69%) VMware ESXi
6 11 (2.47%) KVM
6 11 (2.47%) vSphere
7 10 (2.24%) Xen
8 7 (1.57%) Samba
8 7 (1.57%) VirtualBox
9 6 (1.35%) ISA Server
9 6 (1.35%) NFS
9 6 (1.35%) Snort
9 6 (1.35%) Virtual Servers
10 5 (1.12%) vCloud
11 3 (0.67%) Firmware
11 3 (0.67%) Oracle RAC
11 3 (0.67%) Virtual Desktop
11 3 (0.67%) Virtual Machines
11 3 (0.67%) VMware Server
Systems Management
1 168 (37.67%) Ansible
2 162 (36.32%) Terraform
3 141 (31.61%) Kubernetes
4 121 (27.13%) Puppet
5 71 (15.92%) Opscode Chef
6 60 (13.45%) Packer
7 53 (11.88%) Prometheus
8 44 (9.87%) Grafana
9 35 (7.85%) Nagios
10 34 (7.62%) Consul
11 22 (4.93%) Rancher
12 19 (4.26%) SCCM
13 14 (3.14%) vRealize
13 14 (3.14%) ZABBIX
14 13 (2.91%) HAProxy
15 12 (2.69%) Icinga
15 12 (2.69%) Salt
16 10 (2.24%) vCenter Server
17 9 (2.02%) Norton AntiVirus
18 8 (1.79%) WSUS
Vendors
1 194 (43.50%) Red Hat
2 83 (18.61%) VMware
3 58 (13.00%) Microsoft
4 55 (12.33%) Oracle
5 28 (6.28%) Veracode
6 26 (5.83%) Cisco
7 25 (5.61%) Splunk
8 24 (5.38%) Google
9 21 (4.71%) Atlassian
10 20 (4.48%) ServiceNow
11 19 (4.26%) HP
12 18 (4.04%) Cloudera
13 16 (3.59%) Black Duck
13 16 (3.59%) Citrix
13 16 (3.59%) Hortonworks
14 13 (2.91%) AppDynamics
14 13 (2.91%) Micro Focus
14 13 (2.91%) NetApp
14 13 (2.91%) Sun
15 10 (2.24%) Symantec