Period
to 15 August 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 15 August 2018 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
15 Aug 2018
Same period 2017 Same period 2016
Rank 458 387 422
Rank change year-on-year -71 +35 +22
Permanent jobs citing CentOS 1,038 1,372 1,375
As % of all permanent IT jobs advertised in England 0.66% 0.82% 0.74%
As % of the Operating Systems category 2.84% 3.31% 2.88%
Number of salaries quoted 868 1,184 1,205
England median annual salary £52,500 £50,000 £50,000
Median salary % change year-on-year +5.00% - +5.26%
10th Percentile £33,750 £32,500 £32,500
90th Percentile £80,000 £80,000 £75,000
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 36,612 41,417 47,724
As % of all permanent IT jobs advertised in England 23.11% 24.89% 25.53%
Number of salaries quoted 29,628 33,941 41,061
England median annual salary £47,500 £45,000 £45,000
Median salary % change year-on-year +5.56% - +2.27%
10th Percentile £25,500 £25,500 £24,500
90th Percentile £77,500 £75,000 £72,500
UK median annual salary £47,500 £45,000 £45,000
% change year-on-year +5.56% - +5.88%

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 15 August 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 15 August 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 -42 491 £60,000 -4.00% 72
South East -102 188 £55,000 +22.22% 38
South West +6 131 £45,000 +12.50% 16
North of England +5 116 £42,500 -5.56% 23
North West +11 66 £40,000 - 12
East of England +4 61 £40,000 -20.00% 18
Midlands +7 55 £45,000 +28.57% 14
Yorkshire +19 46 £42,500 -5.56% 5
West Midlands +3 29 £42,500 +21.43% 9
East Midlands +29 26 £46,000 +64.29% 5
North East -21 4 £42,500 +11.84% 6
CentOS
UK

For the 6 months to 15 August 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 1,037 (99.90%) Linux
2 641 (61.75%) Red Hat
3 537 (51.73%) Python
4 522 (50.29%) DevOps
5 437 (42.10%) Red Hat Enterprise Linux
6 433 (41.71%) Amazon AWS
7 405 (39.02%) Puppet
8 392 (37.76%) Ansible
9 357 (34.39%) Windows
10 329 (31.70%) Bash Shell
11 308 (29.67%) Ubuntu
12 281 (27.07%) Docker
13 277 (26.69%) Jenkins
13 277 (26.69%) MySQL
14 273 (26.30%) Opscode Chef
15 267 (25.72%) VMware
15 267 (25.72%) Agile Software Development
16 256 (24.66%) Git (software)
17 251 (24.18%) Apache
18 244 (23.51%) Configuration Management
19 204 (19.65%) Perl
20 203 (19.56%) Microsoft Azure
21 193 (18.59%) Java
22 185 (17.82%) Open Source
23 183 (17.63%) VMware Infrastructure
24 182 (17.53%) PHP
25 168 (16.18%) SQL
26 161 (15.51%) JIRA
27 153 (14.74%) Finance
28 151 (14.55%) Firewall

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
1 251 (24.18%) Apache
2 127 (12.24%) Confluence
3 108 (10.40%) Tomcat
4 90 (8.67%) Elasticsearch
5 88 (8.48%) nginx
6 56 (5.39%) OpenStack
7 34 (3.28%) IIS
8 32 (3.08%) JBoss
9 31 (2.99%) WebSphere
10 25 (2.41%) WebLogic
11 21 (2.02%) WordPress
12 18 (1.73%) SharePoint
13 16 (1.54%) Drupal
14 15 (1.45%) MS Exchange
15 12 (1.16%) Apache Spark
15 12 (1.16%) Exchange Server 2013
15 12 (1.16%) Moodle
16 11 (1.06%) CMS
16 11 (1.06%) WildFly
17 8 (0.77%) SharePoint 2013
Applications
1 12 (1.16%) Microsoft Office
2 6 (0.58%) Microsoft Excel
2 6 (0.58%) Spreadsheet
3 1 (0.096%) HipChat
Business Applications
1 17 (1.64%) Documaker
2 13 (1.25%) Magento
3 8 (0.77%) MetaTrader
4 5 (0.48%) Payment Gateway
5 4 (0.39%) Rolfe and Nolan
5 4 (0.39%) SAP Hybris
6 2 (0.19%) Remedy ITSM
6 2 (0.19%) Temenos T24
Cloud Services
1 433 (41.71%) Amazon AWS
2 203 (19.56%) Microsoft Azure
3 112 (10.79%) AWS CloudFormation
4 109 (10.50%) Amazon EC2
5 82 (7.90%) Google Cloud Platform
6 79 (7.61%) GitHub
7 71 (6.84%) Amazon S3
8 64 (6.17%) Amazon ELB
9 61 (5.88%) SaaS
10 51 (4.91%) Amazon ElastiCache
10 51 (4.91%) IaaS
11 49 (4.72%) Route 53
12 45 (4.34%) Virtual Private Cloud
13 44 (4.24%) Cloud Computing
14 40 (3.85%) Amazon CloudWatch
15 35 (3.37%) AWS Lambda
16 34 (3.28%) Serverless
17 30 (2.89%) Office 365
18 22 (2.12%) CloudFront
19 19 (1.83%) PaaS
Communications & Networking
1 151 (14.55%) Firewall
2 112 (10.79%) DNS
3 111 (10.69%) TCP/IP
4 65 (6.26%) SAN
4 65 (6.26%) VPN
5 62 (5.97%) HTTP
6 57 (5.49%) DHCP
7 51 (4.91%) SSH
8 43 (4.14%) LAN
9 42 (4.05%) SSL
10 40 (3.85%) SNMP
11 39 (3.76%) Internet
12 34 (3.28%) Network Security
13 33 (3.18%) WAN
14 31 (2.99%) Cisco ASA
15 28 (2.70%) IPsec
16 24 (2.31%) BGP
17 23 (2.22%) FTP
18 22 (2.12%) NAS
19 21 (2.02%) OpenVPN
Database & Business Intelligence
1 277 (26.69%) MySQL
2 120 (11.56%) SQL Server
3 95 (9.15%) MongoDB
4 76 (7.32%) PostgreSQL
5 75 (7.23%) Amazon RDS
6 69 (6.65%) NoSQL
7 63 (6.07%) Redis
8 46 (4.43%) Big Data
9 39 (3.76%) MariaDB
10 38 (3.66%) Apache Cassandra
11 31 (2.99%) Relational Database
12 28 (2.70%) Oracle Database
13 26 (2.50%) Hadoop
14 17 (1.64%) Event Store
15 16 (1.54%) Blockchain
16 13 (1.25%) Apache Hive
17 12 (1.16%) Amazon Aurora
17 12 (1.16%) SQL Server 2012
18 8 (0.77%) Amazon Redshift
18 8 (0.77%) Impala
Development Applications
1 277 (26.69%) Jenkins
2 256 (24.66%) Git (software)
3 161 (15.51%) JIRA
4 130 (12.52%) Atlassian Bamboo
5 66 (6.36%) TeamCity
6 63 (6.07%) Bitbucket
7 59 (5.68%) JUnit
8 55 (5.30%) Subversion
9 49 (4.72%) Maven
10 46 (4.43%) Octopus Deploy
11 43 (4.14%) Vagrant
12 38 (3.66%) Sonatype Nexus
13 35 (3.37%) EasyMock
13 35 (3.37%) Selenium
14 25 (2.41%) Eclipse
15 23 (2.22%) Travis CI
16 18 (1.73%) Hudson
16 18 (1.73%) MSBuild
17 17 (1.64%) Gerrit
18 13 (1.25%) GitLab
General
1 153 (14.74%) Finance
2 38 (3.66%) Banking
3 37 (3.56%) Marketing
4 26 (2.50%) Telecoms
5 23 (2.22%) Games
6 20 (1.93%) Law
7 17 (1.64%) Legal
7 17 (1.64%) Retail
8 11 (1.06%) Financial Institution
9 7 (0.67%) Publishing
10 5 (0.48%) Advertising
10 5 (0.48%) Military
11 4 (0.39%) Front Office
11 4 (0.39%) Retail Banking
12 3 (0.29%) Electronics
12 3 (0.29%) Investment Banking
12 3 (0.29%) Manufacturing
13 2 (0.19%) Automotive
13 2 (0.19%) Back Office
13 2 (0.19%) Music Industry
Job Titles
1 297 (28.61%) DevOps Engineer
2 191 (18.40%) Linux Engineer
3 162 (15.61%) Administrator
4 142 (13.68%) Systems Administrator
5 125 (12.04%) Developer
6 121 (11.66%) Linux Administrator
7 115 (11.08%) Systems Engineer
8 109 (10.50%) Linux Systems Administrator
9 86 (8.29%) Linux/Unix DevOps
10 69 (6.65%) Linux Systems Engineer
11 68 (6.55%) AWS DevOps
11 68 (6.55%) AWS Engineer
12 67 (6.45%) Linux DevOps Engineer
13 66 (6.36%) Senior DevOps
13 66 (6.36%) Senior DevOps Engineer
14 51 (4.91%) AWS DevOps Engineer
14 51 (4.91%) Infrastructure Engineer
15 50 (4.82%) Cloud Engineer
16 48 (4.62%) Java Engineer
17 42 (4.05%) Support Engineer
Libraries, Frameworks & Software Standards
1 137 (13.20%) LAMP
2 108 (10.40%) Web Services
3 79 (7.61%) Elastic Stack
4 68 (6.55%) Spring
5 62 (5.97%) RabbitMQ
6 60 (5.78%) HTML
7 54 (5.20%) Middleware
8 52 (5.01%) LEMP Stack
9 50 (4.82%) EJB
9 50 (4.82%) JSF
10 47 (4.53%) CSS
11 42 (4.05%) .NET
12 41 (3.95%) Java EE
13 36 (3.47%) JSON
13 36 (3.47%) Kafka
13 36 (3.47%) RESTful
14 34 (3.28%) Node.js
15 31 (2.99%) LDAP
15 31 (2.99%) REST
15 31 (2.99%) SOAP
Miscellaneous
1 77 (7.42%) Analytical Skills
2 67 (6.45%) Linux Command Line
3 52 (5.01%) Computer Science
4 47 (4.53%) Data Centre
5 43 (4.14%) Fintech
5 43 (4.14%) Public Cloud
6 41 (3.95%) Replication
7 40 (3.85%) Clustering
8 38 (3.66%) Private Cloud
9 35 (3.37%) Wiki
10 30 (2.89%) Management Information System
11 23 (2.22%) Self-Motivation
12 17 (1.64%) Hedge funds
13 16 (1.54%) Robotics
14 15 (1.45%) Enterprise Software
15 13 (1.25%) Bitcoin
16 10 (0.96%) CMDB
16 10 (0.96%) Data Structures
17 9 (0.87%) Mobile App
18 8 (0.77%) Eurex
Operating Systems
1 1,037 (99.90%) Linux
2 437 (42.10%) Red Hat Enterprise Linux
3 357 (34.39%) Windows
4 308 (29.67%) Ubuntu
5 150 (14.45%) Windows Server
6 147 (14.16%) Debian
7 101 (9.73%) Unix
8 88 (8.48%) Windows Server 2008
9 87 (8.38%) Windows Server 2012
10 72 (6.94%) Fedora
11 47 (4.53%) Solaris
12 44 (4.24%) SUSE
13 26 (2.50%) Windows 10
14 23 (2.22%) Windows Server 2003
15 21 (2.02%) AIX
16 19 (1.83%) Amazon Linux
17 18 (1.73%) Android
17 18 (1.73%) DC/OS
18 13 (1.25%) OpenBSD
19 12 (1.16%) VMS
Processes & Methodologies
1 522 (50.29%) DevOps
2 267 (25.72%) Agile Software Development
3 244 (23.51%) Configuration Management
4 185 (17.82%) Open Source
5 114 (10.98%) Continuous Integration
6 112 (10.79%) High Availability
7 106 (10.21%) Scrum
8 101 (9.73%) ITIL
9 99 (9.54%) Problem-Solving
10 96 (9.25%) Software Engineering
11 89 (8.57%) Infrastructure Engineering
12 73 (7.03%) Deployment Automation
13 71 (6.84%) SDLC
14 56 (5.39%) Migration
15 55 (5.30%) Disaster Recovery
16 52 (5.01%) Cybersecurity
17 49 (4.72%) OO
18 48 (4.62%) Test Automation
19 47 (4.53%) Site Reliability Engineering
20 46 (4.43%) Service Delivery
Programming Languages
1 537 (51.73%) Python
2 329 (31.70%) Bash Shell
3 204 (19.65%) Perl
4 193 (18.59%) Java
5 182 (17.53%) PHP
6 168 (16.18%) SQL
7 143 (13.78%) JavaScript
8 141 (13.58%) Ruby
9 105 (10.12%) PowerShell
10 102 (9.83%) Shell Script
11 83 (8.00%) C++
12 50 (4.82%) C
13 44 (4.24%) C#
14 35 (3.37%) Bourne shell
14 35 (3.37%) Korn
15 26 (2.50%) Go
16 23 (2.22%) T-SQL
17 9 (0.87%) R
18 8 (0.77%) Groovy
19 7 (0.67%) ES6
Qualifications
1 89 (8.57%) Degree
2 78 (7.51%) Security Cleared
3 50 (4.82%) DV Cleared
4 44 (4.24%) Cisco Certification
5 38 (3.66%) SC Cleared
6 36 (3.47%) CCNA
6 36 (3.47%) RHCA
7 34 (3.28%) Microsoft Certification
8 31 (2.99%) RHCE
9 24 (2.31%) AWS Certification
10 23 (2.22%) RHCSA
11 22 (2.12%) CISSP
12 18 (1.73%) Computer Science Degree
12 18 (1.73%) Numerate Degree
13 12 (1.16%) ITIL Foundation Certificate
14 10 (0.96%) CISM
14 10 (0.96%) Master's Degree
14 10 (0.96%) SANS
14 10 (0.96%) VMware Certified Professional (VCP)
15 8 (0.77%) MCSE
Quality Assurance & Compliance
1 84 (8.09%) QA
2 36 (3.47%) GCP
3 27 (2.60%) ISO/IEC 27001
4 15 (1.45%) SLA
5 10 (0.96%) PCI DSS
6 4 (0.39%) GDPR
6 4 (0.39%) Sarbanes-Oxley
System Software
1 281 (27.07%) Docker
2 183 (17.63%) VMware Infrastructure
3 114 (10.98%) Active Directory
4 72 (6.94%) Hyper-V
5 47 (4.53%) VirtualBox
5 47 (4.53%) VMware ESXi
6 37 (3.56%) iptables
7 30 (2.89%) Virtual Machines
7 30 (2.89%) vSphere
8 27 (2.60%) KVM
8 27 (2.60%) Samba
9 16 (1.54%) Postfix
10 14 (1.35%) Ceph
10 14 (1.35%) XenServer
11 12 (1.16%) NFS
11 12 (1.16%) QEMU
12 11 (1.06%) Squid
13 9 (0.87%) Varnish
14 8 (0.77%) Apache Flume
14 8 (0.77%) Xen
Systems Management
1 405 (39.02%) Puppet
2 392 (37.76%) Ansible
3 273 (26.30%) Opscode Chef
4 149 (14.35%) Nagios
5 148 (14.26%) Kubernetes
6 137 (13.20%) Terraform
7 73 (7.03%) ZABBIX
8 48 (4.62%) Packer
9 42 (4.05%) Docker Swarm
10 41 (3.95%) Kibana
11 40 (3.85%) logstash
12 28 (2.70%) Grafana
12 28 (2.70%) Rancher
13 24 (2.31%) HAProxy
14 23 (2.22%) Xymon
15 22 (2.12%) Salt
16 19 (1.83%) Cacti
16 19 (1.83%) SCCM
16 19 (1.83%) vRealize
17 17 (1.64%) Oozie
Vendors
1 641 (61.75%) Red Hat
2 267 (25.72%) VMware
3 128 (12.33%) Microsoft
4 121 (11.66%) Cisco
5 95 (9.15%) Oracle
6 84 (8.09%) Google
7 57 (5.49%) New Relic
8 56 (5.39%) Splunk
9 50 (4.82%) SolarWinds
10 42 (4.05%) SaltStack
11 36 (3.47%) Atlassian
12 34 (3.28%) IBM
13 31 (2.99%) HP
14 22 (2.12%) Dell
15 21 (2.02%) ServiceNow
16 20 (1.93%) Sun
16 20 (1.93%) Veeam
17 19 (1.83%) BMC
17 19 (1.83%) EMC
18 18 (1.73%) Juniper