Period
to 24 March 2019

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 24 March 2019 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
24 Mar 2019
Same period 2018 Same period 2017
Rank 408 419 416
Rank change year-on-year +11 -3 +6
Permanent jobs citing CentOS 1,018 1,180 1,244
As % of all permanent IT jobs advertised in England 0.74% 0.71% 0.76%
As % of the Operating Systems category 3.17% 2.95% 3.15%
Number of salaries quoted 842 1,044 1,061
England median annual salary £52,500 £48,750 £52,500
Median salary % change year-on-year +7.69% -7.14% +5.00%
10th Percentile £31,250 £32,500 £32,500
90th Percentile £80,625 £76,250 £77,500
UK median annual salary £52,500 £48,000 £50,000
% change year-on-year +9.38% -4.00% -

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 32,069 39,964 39,490
As % of all permanent IT jobs advertised in England 23.29% 24.13% 24.20%
Number of salaries quoted 25,788 33,089 33,368
England median annual salary £47,500 £47,000 £45,000
Median salary % change year-on-year +1.06% +4.44% +0.46%
10th Percentile £26,000 £25,500 £25,000
90th Percentile £78,750 £76,250 £73,750
UK median annual salary £47,500 £45,000 £43,500
% change year-on-year +5.56% +3.45% -

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 24 March 2019.

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 24 March 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
London +35 476 £57,500 +4.55% 29
South East -17 199 £55,000 +31.74% 8
South West +49 133 £47,500 +11.76% 10
North of England -35 92 £40,000 -11.11% 17
East of England +97 63 £40,000 -33.33% 3
North West +15 59 £45,000 +14.65% 7
Midlands +24 56 £47,500 +5.56% 1
West Midlands +6 42 £41,250 -8.33%
Yorkshire -27 24 £30,000 -40.00% 5
East Midlands +20 14 £70,000 +55.56% 1
North East +22 9 £40,000 +14.29% 5
CentOS
UK

For the 6 months to 24 March 2019, 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 1,018 (100.00%) Linux
2 628 (61.69%) Red Hat
3 489 (48.04%) Python
4 463 (45.48%) DevOps
5 420 (41.26%) Red Hat Enterprise Linux
6 399 (39.19%) Amazon AWS
7 377 (37.03%) Ubuntu
8 358 (35.17%) Windows
9 334 (32.81%) Puppet
10 321 (31.53%) Ansible
11 311 (30.55%) Docker
12 285 (28.00%) Bash Shell
13 266 (26.13%) Agile Software Development
14 261 (25.64%) VMware
15 258 (25.34%) Jenkins
16 242 (23.77%) Apache
17 238 (23.38%) Configuration Management
18 236 (23.18%) SQL
19 222 (21.81%) Windows Server
20 220 (21.61%) Kubernetes
21 208 (20.43%) Terraform
22 207 (20.33%) Opscode Chef
23 194 (19.06%) Microsoft Azure
24 193 (18.96%) MySQL
24 193 (18.96%) Java
25 190 (18.66%) Microsoft
26 185 (18.17%) Open Source
27 182 (17.88%) Finance
28 177 (17.39%) Ruby
29 169 (16.60%) Continuous Integration

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
1 242 (23.77%) Apache
2 106 (10.41%) nginx
3 87 (8.55%) Tomcat
4 84 (8.25%) Elasticsearch
5 75 (7.37%) Confluence
6 66 (6.48%) IIS
7 21 (2.06%) MS Exchange
8 14 (1.38%) Apache Spark
9 12 (1.18%) OpenStack
9 12 (1.18%) WebSphere
10 9 (0.88%) Exchange Server 2013
11 7 (0.69%) Apache Pig
12 6 (0.59%) JBoss
13 5 (0.49%) SharePoint
14 4 (0.39%) Exchange Server 2010
15 3 (0.29%) GlassFish
15 3 (0.29%) Skype for Business
15 3 (0.29%) WordPress
16 2 (0.20%) Apache Solr
16 2 (0.20%) Cloud Foundry
Applications
1 17 (1.67%) Microsoft Office
2 2 (0.20%) Microsoft Excel
2 2 (0.20%) Microsoft PowerPoint
2 2 (0.20%) MS Visio
3 1 (0.098%) Stata
Business Applications
1 8 (0.79%) Eagle PACE
1 8 (0.79%) Front Arena
1 8 (0.79%) Markit EDM
1 8 (0.79%) thinkFolio
2 2 (0.20%) Odoo
2 2 (0.20%) Salesforce.com CRM
3 1 (0.098%) Magento
3 1 (0.098%) Rolfe and Nolan
Cloud Services
1 399 (39.19%) Amazon AWS
2 194 (19.06%) Microsoft Azure
3 94 (9.23%) SaaS
4 88 (8.64%) Google Cloud Platform
5 73 (7.17%) Cloud Computing
6 69 (6.78%) Amazon EC2
7 59 (5.80%) Amazon CloudWatch
8 52 (5.11%) AWS CloudFormation
9 39 (3.83%) Office 365
10 38 (3.73%) GitHub
11 34 (3.34%) Amazon S3
12 31 (3.05%) Amazon SQS
13 25 (2.46%) Route 53
14 24 (2.36%) Datadog
15 21 (2.06%) AWS Lambda
16 17 (1.67%) Virtual Private Cloud
17 16 (1.57%) Amazon ElastiCache
17 16 (1.57%) CloudFront
18 12 (1.18%) IaaS
19 11 (1.08%) PaaS
Communications & Networking
1 135 (13.26%) DNS
2 129 (12.67%) Firewall
3 94 (9.23%) TCP/IP
4 72 (7.07%) LAN
5 71 (6.97%) VPN
6 65 (6.39%) WAN
7 55 (5.40%) DHCP
8 47 (4.62%) SAN
9 37 (3.63%) VLAN
10 33 (3.24%) HTTP
11 32 (3.14%) Network Security
12 27 (2.65%) SSH
12 27 (2.65%) SSL
12 27 (2.65%) VoIP
13 25 (2.46%) iSCSI
14 24 (2.36%) Cisco Nexus
15 21 (2.06%) SNMP
16 19 (1.87%) Cisco ASA
17 18 (1.77%) NAS
18 17 (1.67%) OSPF
Database & Business Intelligence
1 193 (18.96%) MySQL
2 123 (12.08%) NoSQL
3 87 (8.55%) SQL Server
4 76 (7.47%) Big Data
5 72 (7.07%) MongoDB
6 67 (6.58%) Amazon RDS
7 58 (5.70%) Relational Database
8 57 (5.60%) PostgreSQL
9 48 (4.72%) Hadoop
10 30 (2.95%) MariaDB
10 30 (2.95%) SQL Server 2014
11 28 (2.75%) Oracle Database
11 28 (2.75%) Redis
12 22 (2.16%) RDBMS
13 19 (1.87%) SQL Server 2008
14 18 (1.77%) Data Lake
15 15 (1.47%) Amazon Redshift
15 15 (1.47%) BigQuery
15 15 (1.47%) Data Warehouse
15 15 (1.47%) SQL Server 2012
Development Applications
1 258 (25.34%) Jenkins
2 164 (16.11%) Atlassian Bamboo
3 146 (14.34%) Git (software)
4 97 (9.53%) JIRA
5 69 (6.78%) Vagrant
6 47 (4.62%) Maven
7 46 (4.52%) Bitbucket
8 45 (4.42%) JUnit
9 41 (4.03%) EasyMock
10 39 (3.83%) Subversion
11 33 (3.24%) GitLab
12 30 (2.95%) TeamCity
13 28 (2.75%) Octopus Deploy
14 27 (2.65%) Hudson
15 25 (2.46%) Travis CI
16 22 (2.16%) MSBuild
16 22 (2.16%) Team Foundation Server
17 16 (1.57%) Sonatype Nexus
18 14 (1.38%) Eclipse
19 12 (1.18%) Ant
General
1 182 (17.88%) Finance
2 68 (6.68%) Banking
3 38 (3.73%) Marketing
4 29 (2.85%) Investment Banking
5 22 (2.16%) Military
6 21 (2.06%) Front Office
7 16 (1.57%) Law
7 16 (1.57%) Legal
8 15 (1.47%) Financial Institution
8 15 (1.47%) Games
9 13 (1.28%) Aerospace
9 13 (1.28%) Telecoms
10 12 (1.18%) Retail
11 10 (0.98%) Publishing
12 8 (0.79%) Back Office
13 6 (0.59%) Advertising
14 5 (0.49%) Electronics
14 5 (0.49%) Manufacturing
15 4 (0.39%) French Language
16 1 (0.098%) Retail Banking
Job Titles
1 235 (23.08%) DevOps Engineer
2 226 (22.20%) Linux Engineer
3 210 (20.63%) Administrator
4 192 (18.86%) Systems Administrator
5 120 (11.79%) Linux Administrator
6 116 (11.39%) Linux Systems Administrator
7 90 (8.84%) Systems Engineer
8 85 (8.35%) Linux/Unix DevOps
9 82 (8.06%) Infrastructure Engineer
10 80 (7.86%) Developer
11 72 (7.07%) Linux DevOps Engineer
12 58 (5.70%) Support Engineer
13 57 (5.60%) Linux Systems Engineer
14 54 (5.30%) Senior DevOps
15 52 (5.11%) Platform Engineer
16 50 (4.91%) Senior DevOps Engineer
17 49 (4.81%) Analyst
17 49 (4.81%) Junior
18 48 (4.72%) Java Engineer
19 44 (4.32%) Senior Linux Engineer
Libraries, Frameworks & Software Standards
1 151 (14.83%) Web Services
2 99 (9.72%) Elastic Stack
3 90 (8.84%) LAMP
4 58 (5.70%) Spring
5 54 (5.30%) Java EE
6 48 (4.72%) CSS
7 47 (4.62%) HTML
8 46 (4.52%) .NET
9 45 (4.42%) EJB
9 45 (4.42%) JSF
10 43 (4.22%) Apache NiFi
11 41 (4.03%) Node.js
12 37 (3.63%) Kafka
13 34 (3.34%) LEMP Stack
14 27 (2.65%) Middleware
15 25 (2.46%) SOAP
16 22 (2.16%) XML
17 21 (2.06%) AngularJS
18 20 (1.96%) HTML5
18 20 (1.96%) RESTful
Miscellaneous
1 78 (7.66%) Linux Command Line
2 51 (5.01%) Fintech
3 50 (4.91%) Data Centre
4 46 (4.52%) Analytical Skills
5 44 (4.32%) Wiki
6 43 (4.22%) Hedge funds
7 34 (3.34%) Self-Motivation
8 32 (3.14%) Hybrid Cloud
9 29 (2.85%) Management Information System
10 26 (2.55%) Derivative
11 23 (2.26%) Clustering
11 23 (2.26%) Public Cloud
12 22 (2.16%) CMDB
13 21 (2.06%) Equities
13 21 (2.06%) Fixed Income
13 21 (2.06%) Foreign Exchange (FX)
14 18 (1.77%) Marketing Technology
14 18 (1.77%) Private Cloud
15 16 (1.57%) Replication
16 15 (1.47%) Cyberattack
Operating Systems
1 1,018 (100.00%) Linux
2 420 (41.26%) Red Hat Enterprise Linux
3 377 (37.03%) Ubuntu
4 358 (35.17%) Windows
5 222 (21.81%) Windows Server
6 135 (13.26%) Unix
7 104 (10.22%) Debian
8 79 (7.76%) Windows Server 2008
9 77 (7.56%) Windows Server 2012
10 69 (6.78%) Fedora
11 64 (6.29%) Solaris
12 47 (4.62%) SUSE
13 39 (3.83%) Windows 10
14 33 (3.24%) Windows 7
15 28 (2.75%) Windows 8
16 25 (2.46%) AIX
16 25 (2.46%) DC/OS
17 15 (1.47%) HPUX
17 15 (1.47%) Windows Server 2003
18 14 (1.38%) Windows XP
Processes & Methodologies
1 463 (45.48%) DevOps
2 266 (26.13%) Agile Software Development
3 238 (23.38%) Configuration Management
4 185 (18.17%) Open Source
5 169 (16.60%) Continuous Integration
6 133 (13.06%) Infrastructure Engineering
7 117 (11.49%) Scrum
8 111 (10.90%) High Availability
9 108 (10.61%) ITIL
9 108 (10.61%) Software Engineering
10 80 (7.86%) Load Balancing
10 80 (7.86%) Microservices
11 67 (6.58%) Cybersecurity
12 63 (6.19%) Problem-Solving
13 61 (5.99%) Mentoring
14 56 (5.50%) Deployment Automation
15 47 (4.62%) Test Automation
16 45 (4.42%) OO
16 45 (4.42%) TDD
17 44 (4.32%) Computer Science
Programming Languages
1 489 (48.04%) Python
2 285 (28.00%) Bash Shell
3 236 (23.18%) SQL
4 193 (18.96%) Java
5 177 (17.39%) Ruby
6 138 (13.56%) Perl
6 138 (13.56%) PHP
7 120 (11.79%) PowerShell
8 115 (11.30%) Shell Script
9 101 (9.92%) C++
10 79 (7.76%) JavaScript
11 50 (4.91%) C#
12 49 (4.81%) C
13 34 (3.34%) Bourne shell
13 34 (3.34%) Korn
14 24 (2.36%) Go
15 23 (2.26%) VB
16 14 (1.38%) R
17 12 (1.18%) T-SQL
17 12 (1.18%) TypeScript
Qualifications
1 109 (10.71%) Degree
2 103 (10.12%) Security Cleared
3 50 (4.91%) SC Cleared
4 44 (4.32%) Cisco Certification
5 41 (4.03%) RHCE
6 31 (3.05%) RHCSA
7 30 (2.95%) Computer Science Degree
7 30 (2.95%) DV Cleared
8 28 (2.75%) CCNA
9 27 (2.65%) AWS Certification
10 25 (2.46%) Microsoft Certification
11 15 (1.47%) CISSP
11 15 (1.47%) VMware Certified Professional (VCP)
12 14 (1.38%) Numerate Degree
13 12 (1.18%) RHCA
14 11 (1.08%) CCNP
14 11 (1.08%) ITIL Foundation Certificate
15 10 (0.98%) Oracle Certification
16 8 (0.79%) MCP
17 7 (0.69%) CISM
Quality Assurance & Compliance
1 52 (5.11%) ISO/IEC 27001
2 35 (3.44%) QA
3 23 (2.26%) SLA
4 16 (1.57%) PCI DSS
5 11 (1.08%) ISO 9001
6 3 (0.29%) GDPR
7 2 (0.20%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
8 1 (0.098%) Cyber Essentials
8 1 (0.098%) Cyber Essentials PLUS
8 1 (0.098%) Sarbanes-Oxley
System Software
1 311 (30.55%) Docker
2 164 (16.11%) VMware Infrastructure
3 134 (13.16%) Active Directory
4 122 (11.98%) Hyper-V
5 67 (6.58%) Virtual Machines
6 42 (4.13%) VMware ESXi
7 31 (3.05%) KVM
8 30 (2.95%) VirtualBox
9 18 (1.77%) NFS
9 18 (1.77%) vSphere
10 15 (1.47%) Postfix
10 15 (1.47%) Xen
11 14 (1.38%) pfSense
11 14 (1.38%) Snort
12 12 (1.18%) iptables
13 11 (1.08%) Samba
13 11 (1.08%) XenDesktop
14 10 (0.98%) Firmware
14 10 (0.98%) Terminal Services
15 9 (0.88%) VMware NSX
Systems Management
1 334 (32.81%) Puppet
2 321 (31.53%) Ansible
3 220 (21.61%) Kubernetes
4 208 (20.43%) Terraform
5 207 (20.33%) Opscode Chef
6 91 (8.94%) Nagios
7 76 (7.47%) Packer
8 62 (6.09%) Docker Swarm
9 61 (5.99%) Prometheus
10 45 (4.42%) ZABBIX
11 43 (4.22%) Grafana
12 39 (3.83%) Salt
13 37 (3.63%) Consul
14 34 (3.34%) Graphite
15 32 (3.14%) vCenter Server
16 30 (2.95%) HAProxy
17 24 (2.36%) Red Hat Spacewalk
18 20 (1.96%) NetBackup
19 19 (1.87%) Kibana
20 18 (1.77%) SCCM
Vendors
1 628 (61.69%) Red Hat
2 261 (25.64%) VMware
3 190 (18.66%) Microsoft
4 132 (12.97%) Cisco
5 126 (12.38%) Oracle
6 83 (8.15%) Google
7 53 (5.21%) Splunk
8 46 (4.52%) HP
9 42 (4.13%) Citrix
10 36 (3.54%) CheckPoint
11 33 (3.24%) Atlassian
12 31 (3.05%) Brocade
13 27 (2.65%) EMC
14 25 (2.46%) New Relic
14 25 (2.46%) SolarWinds
15 22 (2.16%) Dynatrace
15 22 (2.16%) NetApp
15 22 (2.16%) Palo Alto
16 18 (1.77%) Riverbed
17 17 (1.67%) SaltStack