Period
to 10 December 2018

The following table provides summary statistics for permanent job vacancies advertised in England with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 6 months to 10 December 2018 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
10 Dec 2018
Same period 2017 Same period 2016
Rank 412 391 404
Rank change year-on-year -21 +13 +35
Permanent jobs citing CentOS 1,080 1,346 1,370
As % of all permanent IT jobs advertised in England 0.73% 0.81% 0.78%
As % of the Operating Systems category 3.12% 3.27% 3.17%
Number of salaries quoted 875 1,164 1,213
England median annual salary £54,000 £50,000 £50,000
Median salary % change year-on-year +8.00% - +5.26%
10th Percentile £30,000 £32,500 £32,500
90th Percentile £80,000 £80,000 £72,500
UK median annual salary £52,500 £50,000 £50,000
% change year-on-year +5.00% - +5.26%

CentOS is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in England with a requirement for operating system skills.

All Operating Systems
England
Permanent vacancies with a requirement for operating system skills 34,664 41,196 43,274
As % of all permanent IT jobs advertised in England 23.29% 24.64% 24.79%
Number of salaries quoted 28,031 33,470 36,896
England median annual salary £47,500 £45,000 £45,000
Median salary % change year-on-year +5.56% - -
10th Percentile £25,750 £25,000 £25,000
90th Percentile £78,750 £75,000 £73,625
UK median annual salary £47,500 £45,000 £45,000
% change year-on-year +5.56% - +2.27%

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
Salary Trend in England

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing CentOS in England.

Salary trend for CentOS in England

CentOS
Salary Histogram in England

The salary distribution of IT jobs citing CentOS in England over the 6 months to 10 December 2018.

Salary histogram for CentOS in England

CentOS
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the England region over the 6 months to 10 December 2018. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
London +30 499 £57,500 -4.17% 75
South East -62 218 £52,500 +16.67% 38
North of England -31 141 £40,000 -20.00% 21
South West +22 99 £45,000 - 24
North West -2 80 £45,000 - 10
Midlands +4 63 £46,000 +18.71% 17
East of England +29 60 £42,500 -29.17% 15
Yorkshire -13 51 £33,750 -32.50% 7
East Midlands +23 35 £60,000 +41.18% 7
West Midlands -9 28 £27,500 -23.61% 9
North East +1 10 £40,000 +14.29% 4
CentOS
UK

For the 6 months to 10 December 2018, IT 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 permanent job ads across the England region with a requirement for CentOS.

1 1,079 (99.91%) Linux
2 696 (64.44%) Red Hat
3 627 (58.06%) Python
4 567 (52.50%) DevOps
5 442 (40.93%) Red Hat Enterprise Linux
6 438 (40.56%) Amazon AWS
7 421 (38.98%) Ansible
8 401 (37.13%) Puppet
9 394 (36.48%) Bash Shell
10 388 (35.93%) Windows
11 369 (34.17%) Ubuntu
12 336 (31.11%) Agile Software Development
12 336 (31.11%) Jenkins
13 329 (30.46%) Docker
14 301 (27.87%) Opscode Chef
15 288 (26.67%) Configuration Management
16 249 (23.06%) VMware
17 243 (22.50%) Git (software)
18 242 (22.41%) Terraform
19 241 (22.31%) SQL
20 238 (22.04%) Apache
21 228 (21.11%) Java
22 226 (20.93%) Kubernetes
23 223 (20.65%) Microsoft Azure
24 219 (20.28%) Ruby
25 216 (20.00%) Open Source
26 213 (19.72%) Windows Server
27 205 (18.98%) Perl
28 200 (18.52%) MySQL
29 194 (17.96%) Microsoft

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
1 238 (22.04%) Apache
2 120 (11.11%) Confluence
2 120 (11.11%) Elasticsearch
3 99 (9.17%) nginx
4 92 (8.52%) Tomcat
5 43 (3.98%) IIS
6 25 (2.31%) MS Exchange
7 24 (2.22%) WebSphere
8 20 (1.85%) OpenStack
9 15 (1.39%) JBoss
9 15 (1.39%) SharePoint
10 10 (0.93%) Apache Spark
10 10 (0.93%) WildFly
11 9 (0.83%) WebLogic
12 8 (0.74%) Jetty
13 7 (0.65%) CMS
14 6 (0.56%) WordPress
15 5 (0.46%) Apache Solr
16 4 (0.37%) concrete5
16 4 (0.37%) ExpressionEngine
Applications
1 26 (2.41%) Microsoft Office
2 4 (0.37%) Microsoft Excel
3 3 (0.28%) MS Visio
4 2 (0.19%) Microsoft Project
5 1 (0.093%) HipChat
5 1 (0.093%) Microsoft PowerPoint
5 1 (0.093%) Spreadsheet
5 1 (0.093%) Stata
Business Applications
1 4 (0.37%) Eagle PACE
1 4 (0.37%) Front Arena
1 4 (0.37%) Magento
1 4 (0.37%) Markit EDM
1 4 (0.37%) thinkFolio
2 3 (0.28%) Rolfe and Nolan
3 2 (0.19%) Odoo
3 2 (0.19%) Salesforce.com CRM
4 1 (0.093%) Payment Gateway
Cloud Services
1 438 (40.56%) Amazon AWS
2 223 (20.65%) Microsoft Azure
3 101 (9.35%) SaaS
4 90 (8.33%) AWS CloudFormation
5 89 (8.24%) Google Cloud Platform
6 81 (7.50%) Cloud Computing
7 71 (6.57%) Amazon EC2
8 49 (4.54%) GitHub
9 38 (3.52%) Amazon S3
10 36 (3.33%) Office 365
10 36 (3.33%) Virtual Private Cloud
11 30 (2.78%) Amazon CloudWatch
12 23 (2.13%) Amazon ELB
13 19 (1.76%) Route 53
14 18 (1.67%) CloudFront
15 17 (1.57%) Amazon ElastiCache
16 15 (1.39%) Serverless
17 13 (1.20%) AWS Lambda
18 12 (1.11%) IaaS
19 11 (1.02%) Azure Active Directory
Communications & Networking
1 132 (12.22%) Firewall
2 131 (12.13%) DNS
3 90 (8.33%) TCP/IP
4 73 (6.76%) VPN
5 57 (5.28%) LAN
6 53 (4.91%) SAN
6 53 (4.91%) WAN
7 51 (4.72%) DHCP
8 37 (3.43%) Network Security
9 35 (3.24%) VoIP
10 33 (3.06%) VLAN
11 32 (2.96%) Internet
12 31 (2.87%) BGP
13 30 (2.78%) SSH
14 27 (2.50%) HTTP
15 24 (2.22%) OSPF
16 22 (2.04%) SNMP
17 21 (1.94%) Fibre Channel
18 19 (1.76%) Kerberos
18 19 (1.76%) Wi-Fi
Database & Business Intelligence
1 200 (18.52%) MySQL
2 121 (11.20%) SQL Server
3 120 (11.11%) NoSQL
4 71 (6.57%) MongoDB
5 70 (6.48%) Big Data
6 67 (6.20%) PostgreSQL
7 60 (5.56%) Relational Database
8 47 (4.35%) Amazon RDS
9 38 (3.52%) Oracle Database
10 33 (3.06%) MariaDB
11 27 (2.50%) Hadoop
12 26 (2.41%) Apache Cassandra
12 26 (2.41%) Redis
13 23 (2.13%) SQL Server 2014
14 22 (2.04%) SQL Server 2008
15 19 (1.76%) RDBMS
16 16 (1.48%) Amazon Redshift
16 16 (1.48%) SQL Server 2012
17 14 (1.30%) Data Lake
17 14 (1.30%) Data Warehouse
Development Applications
1 336 (31.11%) Jenkins
2 243 (22.50%) Git (software)
3 166 (15.37%) JIRA
4 165 (15.28%) Atlassian Bamboo
5 68 (6.30%) Bitbucket
6 62 (5.74%) JUnit
7 61 (5.65%) Subversion
8 57 (5.28%) Vagrant
9 53 (4.91%) EasyMock
10 50 (4.63%) Maven
11 39 (3.61%) GitLab
11 39 (3.61%) Octopus Deploy
11 39 (3.61%) TeamCity
12 26 (2.41%) Sonatype Nexus
13 19 (1.76%) Eclipse
14 17 (1.57%) Selenium
15 16 (1.48%) Travis CI
16 15 (1.39%) Trac
17 14 (1.30%) Redmine
18 13 (1.20%) MSBuild
General
1 183 (16.94%) Finance
2 62 (5.74%) Banking
3 35 (3.24%) Marketing
4 31 (2.87%) Investment Banking
5 27 (2.50%) Telecoms
6 24 (2.22%) Front Office
7 22 (2.04%) Law
8 19 (1.76%) Legal
9 16 (1.48%) Retail
10 13 (1.20%) Games
11 12 (1.11%) Electronics
12 11 (1.02%) Military
13 10 (0.93%) Financial Institution
13 10 (0.93%) Publishing
14 9 (0.83%) Advertising
15 8 (0.74%) Aerospace
15 8 (0.74%) Manufacturing
16 5 (0.46%) Back Office
17 2 (0.19%) Automotive
17 2 (0.19%) Pharmaceutical
Job Titles
1 298 (27.59%) DevOps Engineer
2 195 (18.06%) Linux Engineer
3 182 (16.85%) Administrator
4 170 (15.74%) Systems Administrator
5 107 (9.91%) Linux Administrator
6 106 (9.81%) Linux Systems Administrator
7 99 (9.17%) Systems Engineer
8 96 (8.89%) Developer
9 75 (6.94%) Infrastructure Engineer
9 75 (6.94%) Linux/Unix DevOps
10 72 (6.67%) Linux Systems Engineer
11 67 (6.20%) Support Engineer
12 61 (5.65%) AWS DevOps
13 58 (5.37%) Java Engineer
14 57 (5.28%) AWS Engineer
14 57 (5.28%) Linux DevOps Engineer
15 54 (5.00%) Platform Engineer
16 52 (4.81%) Senior DevOps
17 51 (4.72%) Senior DevOps Engineer
18 48 (4.44%) Software Engineer
Libraries, Frameworks & Software Standards
1 139 (12.87%) Web Services
2 105 (9.72%) Elastic Stack
3 89 (8.24%) LAMP
4 73 (6.76%) Spring
5 66 (6.11%) Java EE
6 60 (5.56%) EJB
6 60 (5.56%) JSF
7 55 (5.09%) HTML
8 53 (4.91%) CSS
9 52 (4.81%) Middleware
10 51 (4.72%) .NET
11 41 (3.80%) LDAP
11 41 (3.80%) LEMP Stack
12 38 (3.52%) Kafka
13 31 (2.87%) RabbitMQ
14 30 (2.78%) XML
15 28 (2.59%) Node.js
15 28 (2.59%) REST
16 26 (2.41%) SOAP
17 24 (2.22%) WebSphere MQ
Miscellaneous
1 71 (6.57%) Analytical Skills
2 60 (5.56%) Fintech
3 59 (5.46%) Data Centre
4 56 (5.19%) Wiki
5 55 (5.09%) Linux Command Line
6 45 (4.17%) Management Information System
7 34 (3.15%) Self-Motivation
8 32 (2.96%) Clustering
9 30 (2.78%) Derivative
10 29 (2.69%) Hedge funds
11 26 (2.41%) Replication
12 25 (2.31%) CMDB
13 24 (2.22%) Enterprise Software
13 24 (2.22%) Equities
13 24 (2.22%) Foreign Exchange (FX)
14 23 (2.13%) Fixed Income
14 23 (2.13%) Hybrid Cloud
15 20 (1.85%) Public Cloud
16 19 (1.76%) Private Cloud
17 16 (1.48%) Marketing Technology
Operating Systems
1 1,079 (99.91%) Linux
2 442 (40.93%) Red Hat Enterprise Linux
3 388 (35.93%) Windows
4 369 (34.17%) Ubuntu
5 213 (19.72%) Windows Server
6 127 (11.76%) Unix
7 105 (9.72%) Debian
8 84 (7.78%) Fedora
9 70 (6.48%) Windows Server 2008
10 67 (6.20%) Windows Server 2012
11 59 (5.46%) Windows 10
12 56 (5.19%) Solaris
13 44 (4.07%) SUSE
14 42 (3.89%) Windows 7
15 39 (3.61%) Windows 8
16 19 (1.76%) Windows XP
17 18 (1.67%) AIX
18 16 (1.48%) Windows Server 2003
19 11 (1.02%) HPUX
19 11 (1.02%) Mac OS X
Processes & Methodologies
1 567 (52.50%) DevOps
2 336 (31.11%) Agile Software Development
3 288 (26.67%) Configuration Management
4 216 (20.00%) Open Source
5 181 (16.76%) Continuous Integration
6 171 (15.83%) Scrum
7 136 (12.59%) High Availability
8 129 (11.94%) Infrastructure Engineering
9 105 (9.72%) Software Engineering
10 84 (7.78%) Microservices
11 83 (7.69%) ITIL
12 82 (7.59%) Load Balancing
13 77 (7.13%) Deployment Automation
14 74 (6.85%) Test Automation
15 68 (6.30%) Problem-Solving
16 64 (5.93%) Cybersecurity
17 63 (5.83%) Requirements Analysis
18 59 (5.46%) OO
19 55 (5.09%) OOD
19 55 (5.09%) TDD
Programming Languages
1 627 (58.06%) Python
2 394 (36.48%) Bash Shell
3 241 (22.31%) SQL
4 228 (21.11%) Java
5 219 (20.28%) Ruby
6 205 (18.98%) Perl
7 157 (14.54%) PHP
8 116 (10.74%) JavaScript
9 115 (10.65%) PowerShell
10 113 (10.46%) C++
11 94 (8.70%) Shell Script
12 56 (5.19%) C#
13 46 (4.26%) Bourne shell
13 46 (4.26%) Korn
14 36 (3.33%) C
15 35 (3.24%) Go
16 20 (1.85%) R
17 19 (1.76%) T-SQL
18 17 (1.57%) VB
19 15 (1.39%) TypeScript
Qualifications
1 123 (11.39%) Degree
2 65 (6.02%) Security Cleared
3 59 (5.46%) RHCE
4 49 (4.54%) RHCSA
5 36 (3.33%) DV Cleared
6 35 (3.24%) Cisco Certification
6 35 (3.24%) RHCA
7 33 (3.06%) AWS Certification
7 33 (3.06%) Microsoft Certification
8 30 (2.78%) CCNA
9 26 (2.41%) CISSP
9 26 (2.41%) Computer Science Degree
10 25 (2.31%) SC Cleared
11 19 (1.76%) Numerate Degree
12 14 (1.30%) SANS
13 11 (1.02%) Linux+ Certification
13 11 (1.02%) Oracle Certification
14 10 (0.93%) CISM
15 9 (0.83%) CompTIA Security+
15 9 (0.83%) LPIC
Quality Assurance & Compliance
1 58 (5.37%) QA
2 34 (3.15%) ISO/IEC 27001
3 22 (2.04%) SLA
4 8 (0.74%) ISO 9001
4 8 (0.74%) PCI DSS
5 7 (0.65%) Sarbanes-Oxley
6 6 (0.56%) GDPR
7 2 (0.19%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
8 1 (0.093%) Cyber Essentials
8 1 (0.093%) Cyber Essentials PLUS
8 1 (0.093%) GAMP
System Software
1 329 (30.46%) Docker
2 165 (15.28%) VMware Infrastructure
3 124 (11.48%) Active Directory
4 71 (6.57%) Hyper-V
5 68 (6.30%) VMware ESXi
6 45 (4.17%) Virtual Machines
7 34 (3.15%) vSphere
8 31 (2.87%) VirtualBox
9 26 (2.41%) pfSense
10 23 (2.13%) NFS
11 21 (1.94%) KVM
12 18 (1.67%) Xen
13 15 (1.39%) Samba
14 13 (1.20%) iptables
15 11 (1.02%) Snort
16 9 (0.83%) GlusterFS
17 7 (0.65%) Squid
18 6 (0.56%) LXC
18 6 (0.56%) Varnish
19 5 (0.46%) VMFS
Systems Management
1 421 (38.98%) Ansible
2 401 (37.13%) Puppet
3 301 (27.87%) Opscode Chef
4 242 (22.41%) Terraform
5 226 (20.93%) Kubernetes
6 118 (10.93%) Nagios
7 92 (8.52%) ZABBIX
8 73 (6.76%) Packer
9 68 (6.30%) Docker Swarm
10 61 (5.65%) Grafana
11 54 (5.00%) Prometheus
12 48 (4.44%) Kibana
13 40 (3.70%) Salt
14 39 (3.61%) HAProxy
15 37 (3.43%) Consul
16 36 (3.33%) vCenter Server
17 34 (3.15%) Graphite
18 29 (2.69%) Icinga
19 28 (2.59%) logstash
20 20 (1.85%) Red Hat Spacewalk
Vendors
1 696 (64.44%) Red Hat
2 249 (23.06%) VMware
3 194 (17.96%) Microsoft
4 123 (11.39%) Cisco
5 117 (10.83%) Oracle
6 83 (7.69%) Google
7 59 (5.46%) Splunk
8 42 (3.89%) SolarWinds
9 33 (3.06%) HP
10 32 (2.96%) New Relic
11 28 (2.59%) CheckPoint
11 28 (2.59%) EMC
12 27 (2.50%) NetApp
12 27 (2.50%) SaltStack
13 24 (2.22%) Atlassian
14 22 (2.04%) Brocade
15 21 (1.94%) Hortonworks
16 19 (1.76%) Citrix
17 18 (1.67%) Dell
18 17 (1.57%) Veeam