The following table provides summary statistics for permanent job vacancies with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 3 months to 23 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
23 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
UK
Rank 395 402 424
Rank change year-on-year +7 +22  
Permanent jobs citing CentOS 595 749 718
As % of all permanent IT jobs advertised in the UK 0.71% 0.73% 0.68%
As % of the Operating Systems category 2.99% 2.80% 2.53%
Number of salaries quoted 513 634 635
Median salary £50,000 £50,000 £45,000
Median salary % change year-on-year - +11.11%  
90% offered a salary of more than £35,000 £32,500 £30,000
10% offered a salary of more than £75,000 £70,000 £65,000
UK excluding London median salary £45,000 £45,000 £42,500
% change year-on-year - +5.88%  

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

Operating System Skills
UK
Permanent job vacancies with a requirement for operating system skills 19873 26784 28342
As % of all permanent IT job vacancies advertised in the UK 23.73% 26.11% 26.92%
Number of salaries quoted 16699 22540 23686
Median salary £41,500 £41,000 £40,500
Median salary % change year-on-year +1.21% +1.23%  
90% offered a salary of more than £25,000 £25,000 £24,000
10% offered a salary of more than £66,000 £65,000 £65,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend

The job posting trend of jobs advertised citing CentOS as a proportion of all permanent or contract IT jobs with a match in the Operating Systems category.

Job vacancy trend for CentOS in the UK

CentOS
Salary Trend

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

Salary trend for CentOS in the UK

CentOS
Salary Histogram

The salary distribution of IT jobs citing CentOS over the 3 months to 23 March 2017.

Salary histogram for CentOS in the UK

CentOS
Top 30 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the UK over the 3 months to 23 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +11 564 £50,000 -4.76% 110
London -13 242 £57,500 +4.54% 52
South East +51 149 £50,000 -4.76% 27
Berkshire +60 80 £53,250 +6.50% 10
City of London +65 43 £55,000 -18.51% 9
South West +31 40 £40,000 - 13
North West -22 38 £45,000 +28.57% 5
Reading +58 37 £47,500 -5.00% 8
Manchester -22 37 £45,000 +28.57% 4
East of England +41 28 £45,000 +20.00% 4
West Midlands +31 23 £40,000 -13.04% 4
Slough +44 22 £63,750 -1.92%
Gloucestershire +7 20 £37,500 -6.25% 3
Yorkshire +2 19 £40,000 - 3
Oxfordshire -8 19 £50,000 +6.38% 2
Hampshire +7 17 £41,250 -8.33% 13
Hertfordshire +23 15 £45,000 +2.27% 2
West Yorkshire +19 15 £40,000 -23.80% 1
East Midlands +9 15 £31,500 -3.07%
Welwyn Garden City - 15 £45,000 - 1
Surrey +6 14 £46,500 -15.45% 1
Wales +5 13 £35,000 -22.22%
Warwickshire +40 12 £50,000 -9.09%
Maidenhead +12 12 £40,000 +33.33%
Leeds +9 12 £40,000 -17.94% 1
Bristol +9 12 £42,500 -5.55% 8
Cambridgeshire +19 11 £48,500 +29.33% 2
Kent +29 10 £47,500 +2.70%
Cambridge +12 10 £53,750 +53.57% 2
South Wales +10 10 £25,000 -44.44%

CentOS
Top 30 Related IT Skills

For the 6 months to 23 March 2017, IT jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for CentOS.

1 1306 (100.00%) Linux
2 710 (54.36%) Red Hat
3 551 (42.19%) DevOps
4 539 (41.27%) Python
5 503 (38.51%) Windows
6 502 (38.44%) Red Hat Enterprise Linux
7 477 (36.52%) Puppet
8 417 (31.93%) Bash Shell
9 383 (29.33%) Ubuntu
10 375 (28.71%) VMware
11 365 (27.95%) Amazon AWS
12 351 (26.88%) Opscode Chef
13 340 (26.03%) Apache
14 332 (25.42%) Ansible
15 327 (25.04%) MySQL
16 309 (23.66%) Java
17 303 (23.20%) Perl
18 251 (19.22%) VMware Infrastructure
19 246 (18.84%) Configuration Management
20 243 (18.61%) Agile Software Development
20 243 (18.61%) Jenkins
21 234 (17.92%) SQL
22 216 (16.54%) Git (software)
23 215 (16.46%) Open Source
24 211 (16.16%) Windows Server
25 210 (16.08%) PHP
26 201 (15.39%) Ruby
27 197 (15.08%) Debian
28 188 (14.40%) Continuous Integration
29 187 (14.32%) Docker

CentOS
Top Related IT Skills 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
1 340 (26.03%) Apache
2 153 (11.72%) Tomcat
3 136 (10.41%) nginx
4 102 (7.81%) IIS
5 85 (6.51%) Elasticsearch
6 60 (4.59%) OpenStack
7 56 (4.29%) Confluence
8 36 (2.76%) JBoss
9 28 (2.14%) MS Exchange
10 22 (1.68%) Apache Spark
11 18 (1.38%) CMS
11 18 (1.38%) WebLogic
11 18 (1.38%) WebSphere
12 12 (0.92%) Apache Solr
13 11 (0.84%) SharePoint
14 9 (0.69%) Cloud Foundry
14 9 (0.69%) Hubot
14 9 (0.69%) WordPress
15 8 (0.61%) Jetty
16 7 (0.54%) concrete5
Applications
1 54 (4.13%) MS Excel
2 17 (1.30%) MS Office
3 12 (0.92%) Photoshop
4 3 (0.23%) MS Visio
5 2 (0.15%) Abaqus
5 2 (0.15%) HipChat
6 1 (0.077%) Adobe Captivate
6 1 (0.077%) Adobe Creative Suite
6 1 (0.077%) Adobe Premiere
6 1 (0.077%) GNU Octave
6 1 (0.077%) Houdini
6 1 (0.077%) Maya
6 1 (0.077%) NUKE
Business Applications
1 12 (0.92%) Magento
2 11 (0.84%) SAP Oil and Gas
3 6 (0.46%) Eloqua
3 6 (0.46%) Oracle EBS
4 2 (0.15%) OpenCart
5 1 (0.077%) Dynamics CRM
5 1 (0.077%) Oracle Applications
Cloud Services
1 365 (27.95%) Amazon AWS
2 103 (7.89%) SaaS
3 92 (7.04%) Microsoft Azure
4 54 (4.13%) Amazon EC2
5 49 (3.75%) AWS CloudFormation
6 47 (3.60%) Amazon S3
7 43 (3.29%) IaaS
8 40 (3.06%) PaaS
9 27 (2.07%) Cloud Computing
10 25 (1.91%) Azure Active Directory
11 23 (1.76%) Amazon CloudWatch
12 21 (1.61%) Amazon SQS
13 19 (1.45%) Office 365
14 16 (1.23%) GitHub
15 14 (1.07%) Slack
16 12 (0.92%) Google Cloud Platform
17 11 (0.84%) Virtual Private Cloud
18 9 (0.69%) Route 53
19 8 (0.61%) Amazon ELB
19 8 (0.61%) AWS Lambda
Communications & Networking
1 177 (13.55%) TCP/IP
2 168 (12.86%) DNS
3 151 (11.56%) Firewall
4 120 (9.19%) SAN
5 97 (7.43%) VPN
6 79 (6.05%) WAN
7 72 (5.51%) HTTP
8 67 (5.13%) LAN
9 60 (4.59%) LDAP
10 50 (3.83%) DHCP
11 45 (3.45%) VoIP
12 44 (3.37%) Network Security
13 43 (3.29%) Internet
14 37 (2.83%) SSH
15 33 (2.53%) VLAN
16 32 (2.45%) SNMP
17 31 (2.37%) SSL
18 30 (2.30%) Kerberos
18 30 (2.30%) SMTP
19 28 (2.14%) Cisco ASA
Database & Business Intelligence
1 327 (25.04%) MySQL
2 105 (8.04%) NoSQL
3 104 (7.96%) SQL Server
4 81 (6.20%) MongoDB
5 75 (5.74%) PostgreSQL
6 68 (5.21%) Hadoop
7 63 (4.82%) Apache Cassandra
7 63 (4.82%) Redis
8 58 (4.44%) Big Data
9 34 (2.60%) Amazon RDS
10 30 (2.30%) Relational Database
11 25 (1.91%) MariaDB
12 18 (1.38%) Data Warehouse
13 14 (1.07%) CouchDB
13 14 (1.07%) Oracle Database
14 11 (0.84%) Neo4j
14 11 (0.84%) Pentaho
15 9 (0.69%) DB2
15 9 (0.69%) SAP HANA
15 9 (0.69%) SQL Server 2008
Development Applications
1 243 (18.61%) Jenkins
2 216 (16.54%) Git (software)
3 102 (7.81%) JIRA
4 80 (6.13%) Vagrant
5 57 (4.36%) Atlassian Bamboo
6 53 (4.06%) TeamCity
7 50 (3.83%) Subversion
8 35 (2.68%) Maven
9 34 (2.60%) Bitbucket
10 33 (2.53%) JUnit
11 28 (2.14%) Octopus Deploy
12 19 (1.45%) EasyMock
13 15 (1.15%) Selenium
14 13 (1.00%) Gradle
14 13 (1.00%) Hudson
14 13 (1.00%) Talend Open Studio
15 12 (0.92%) Ant
16 11 (0.84%) FishEye
17 9 (0.69%) MSBuild
17 9 (0.69%) Team Foundation Server
General
1 162 (12.40%) Finance
2 79 (6.05%) Telecoms
3 53 (4.06%) Marketing
4 48 (3.68%) Games
5 32 (2.45%) Banking
6 18 (1.38%) Advertising
7 16 (1.23%) Electronics
8 15 (1.15%) Billing
8 15 (1.15%) Manufacturing
8 15 (1.15%) Retail
9 12 (0.92%) Legal
10 11 (0.84%) Front Office
11 9 (0.69%) German Language
12 7 (0.54%) Back Office
12 7 (0.54%) Financial Institution
13 6 (0.46%) Law
14 5 (0.38%) French Language
15 4 (0.31%) Pharmaceutical
16 2 (0.15%) Military
16 2 (0.15%) Publishing
Job Titles
1 334 (25.57%) Administrator
2 331 (25.34%) Systems Administrator
3 306 (23.43%) DevOps Engineer
4 278 (21.29%) Linux Engineer
5 224 (17.15%) Linux Systems Administrator
6 222 (17.00%) Linux Administrator
7 122 (9.34%) Linux/Unix DevOps
8 99 (7.58%) Linux DevOps Engineer
8 99 (7.58%) Systems Engineer
9 94 (7.20%) Developer
10 75 (5.74%) Support Engineer
11 73 (5.59%) Infrastructure Engineer
12 72 (5.51%) Senior Systems Administrator
13 71 (5.44%) Senior DevOps
14 70 (5.36%) Senior DevOps Engineer
15 66 (5.05%) Linux Systems Engineer
16 61 (4.67%) AWS Engineer
17 60 (4.59%) AWS DevOps
18 56 (4.29%) DevOps Administrator
19 53 (4.06%) Senior Linux Administrator
Libraries, Frameworks & Software Standards
1 161 (12.33%) LAMP
2 153 (11.72%) Web Services
3 93 (7.12%) HTML
4 76 (5.82%) Node.js
5 60 (4.59%) RESTful
6 55 (4.21%) CSS
7 51 (3.91%) Elastic Stack
8 50 (3.83%) .NET
9 45 (3.45%) LEMP Stack
10 38 (2.91%) AngularJS
11 33 (2.53%) Spring
12 31 (2.37%) jQuery
13 29 (2.22%) ActiveMQ
13 29 (2.22%) JSON
14 26 (1.99%) Kafka
14 26 (1.99%) RabbitMQ
15 24 (1.84%) Sensu
16 21 (1.61%) Java EE
16 21 (1.61%) Memcached
17 20 (1.53%) Apache Camel
Miscellaneous
1 115 (8.81%) Data Centre
2 90 (6.89%) Computer Science
3 85 (6.51%) Analytical Skills
4 61 (4.67%) Linux Command Line
5 47 (3.60%) Fintech
6 37 (2.83%) Hedge funds
7 34 (2.60%) Clustering
8 29 (2.22%) Management Information System
9 25 (1.91%) Mobile App
10 24 (1.84%) Wiki
11 23 (1.76%) PKI
12 19 (1.45%) Cyberthreat
13 15 (1.15%) Public Cloud
14 14 (1.07%) Enterprise Software
14 14 (1.07%) Replication
15 12 (0.92%) iPad
15 12 (0.92%) Smart Meter
16 11 (0.84%) CMDB
16 11 (0.84%) Driving Licence
16 11 (0.84%) Private Cloud
Operating Systems
1 1306 (100.00%) Linux
2 503 (38.51%) Windows
3 502 (38.44%) Red Hat Enterprise Linux
4 383 (29.33%) Ubuntu
5 211 (16.16%) Windows Server
6 197 (15.08%) Debian
7 179 (13.71%) Unix
8 135 (10.34%) Windows Server 2012
9 105 (8.04%) Windows Server 2008
10 58 (4.44%) Solaris
11 45 (3.45%) Fedora
12 28 (2.14%) AIX
13 27 (2.07%) SUSE Linux Enterprise Server
14 24 (1.84%) SUSE
15 21 (1.61%) Oracle Linux
16 18 (1.38%) HPUX
16 18 (1.38%) Windows Server 2003
17 17 (1.30%) Windows 7
18 13 (1.00%) Windows 8
19 12 (0.92%) FreeBSD
Processes & Methodologies
1 551 (42.19%) DevOps
2 246 (18.84%) Configuration Management
3 243 (18.61%) Agile Software Development
4 215 (16.46%) Open Source
5 188 (14.40%) Continuous Integration
6 123 (9.42%) ITIL
7 112 (8.58%) High Availability
8 79 (6.05%) Scrum
9 74 (5.67%) Software Engineering
10 68 (5.21%) E-Commerce
11 67 (5.13%) Microservices
12 65 (4.98%) Mentoring
13 64 (4.90%) Continuous Delivery
14 56 (4.29%) Analytics
15 53 (4.06%) Performance Monitoring
16 51 (3.91%) OO
17 44 (3.37%) Cybersecurity
18 43 (3.29%) SIEM
19 42 (3.22%) Business Intelligence
19 42 (3.22%) Migration
Programming Languages
1 539 (41.27%) Python
2 417 (31.93%) Bash Shell
3 309 (23.66%) Java
4 303 (23.20%) Perl
5 234 (17.92%) SQL
6 210 (16.08%) PHP
7 201 (15.39%) Ruby
8 126 (9.65%) JavaScript
9 91 (6.97%) PowerShell
10 80 (6.13%) C
11 77 (5.90%) Shell Script
12 61 (4.67%) C++
13 34 (2.60%) Groovy
14 27 (2.07%) C#
14 27 (2.07%) Korn
15 19 (1.45%) Scala
16 18 (1.38%) AWK
17 17 (1.30%) Bourne shell
18 15 (1.15%) Go
18 15 (1.15%) Lua
Qualifications
1 121 (9.26%) Degree
2 85 (6.51%) Security Cleared
3 59 (4.52%) Cisco Certification
4 42 (3.22%) CISSP
5 40 (3.06%) Microsoft Certification
6 38 (2.91%) SC Cleared
7 37 (2.83%) CCNA
8 35 (2.68%) AWS Certification
9 29 (2.22%) CEH
10 28 (2.14%) GCIA
11 26 (1.99%) RHCA
12 23 (1.76%) VMware Certified Professional (VCP)
13 21 (1.61%) DV Cleared
14 18 (1.38%) CCNP
14 18 (1.38%) RHCE
15 13 (1.00%) MCSE
16 12 (0.92%) RHCSA
17 10 (0.77%) CCSP
17 10 (0.77%) MCSA
18 7 (0.54%) VCP6
Quality Assurance & Compliance
1 32 (2.45%) QA
2 25 (1.91%) ISO/IEC 27001
3 23 (1.76%) SLA
4 15 (1.15%) PCI DSS
5 2 (0.15%) GPG13
6 1 (0.077%) Cyber Essentials
6 1 (0.077%) DICOM
6 1 (0.077%) GDPR
6 1 (0.077%) HL7
6 1 (0.077%) ISO 9001
6 1 (0.077%) Sarbanes-Oxley
System Software
1 251 (19.22%) VMware Infrastructure
2 187 (14.32%) Docker
3 173 (13.25%) Active Directory
4 71 (5.44%) KVM
5 67 (5.13%) Hyper-V
6 55 (4.21%) vSphere
7 52 (3.98%) Varnish
8 41 (3.14%) Xen
9 35 (2.68%) NFS
10 31 (2.37%) Virtual Machines
11 29 (2.22%) XenServer
12 27 (2.07%) iptables
12 27 (2.07%) VirtualBox
13 25 (1.91%) VMware ESXi
14 20 (1.53%) vCloud
15 18 (1.38%) Postfix
15 18 (1.38%) Virtual Servers
16 15 (1.15%) Squid
17 14 (1.07%) Kamailio
18 11 (0.84%) Samba
Systems Management
1 477 (36.52%) Puppet
2 351 (26.88%) Opscode Chef
3 332 (25.42%) Ansible
4 143 (10.95%) Nagios
5 89 (6.81%) Salt
6 88 (6.74%) Terraform
7 62 (4.75%) Kubernetes
8 50 (3.83%) SELinux
9 47 (3.60%) ZABBIX
10 41 (3.14%) Grafana
11 32 (2.45%) logstash
12 31 (2.37%) Mesos
13 28 (2.14%) CFEngine
14 26 (1.99%) Kibana
15 25 (1.91%) HAProxy
15 25 (1.91%) Packer
16 22 (1.68%) Consul
17 21 (1.61%) cPanel
17 21 (1.61%) Graphite
18 17 (1.30%) Rundeck
Vendors
1 710 (54.36%) Red Hat
2 375 (28.71%) VMware
3 162 (12.40%) Cisco
4 145 (11.10%) Microsoft
5 90 (6.89%) Oracle
6 61 (4.67%) HP
7 57 (4.36%) Google
8 47 (3.60%) New Relic
9 40 (3.06%) Juniper
10 39 (2.99%) Atlassian
11 33 (2.53%) Dell
11 33 (2.53%) EMC
12 26 (1.99%) Sun
13 25 (1.91%) Citrix
14 24 (1.84%) SAP
15 18 (1.38%) SaltStack
15 18 (1.38%) Splunk
15 18 (1.38%) Trend Micro
16 16 (1.23%) Apple
16 16 (1.23%) IBM
City, London
Oliver Bernard
Salary: £90000 - £110000 per annum + Benefits
Posted: 12 hours ago
Edinburgh, Midlothian
HAYS INFORMATION TECHNOLOGY
Salary: £20000.00 - £30000.00 per annum
Posted: 7 hours ago
Oxford, Oxfordshire
Big Red Recruitment
Salary: £45000 - £60000 per annum + competitive package
Posted: 8 hours ago
North West London
Franklin Fitch Limited
Salary: Up to £55,000 per annum
Posted: 12 hours ago
London
Digitech Resourcing Ltd
Salary: From £550 to £650 per day
Posted: 8 hours ago
London
Seven Recruitment
Salary: From £75,000 to £90,000 per annum
Posted: 11 hours ago
London
Seven Recruitment
Salary: From £70,000 to £90,000 per annum
Posted: 11 hours ago
London
Austin Fraser
Salary: £30000 - £55000 per annum
Posted: Yesterday
London
Digitech Resourcing Ltd
Salary: From £65,000 to £70,000 per annum plus bonus and benefits
Posted: 8 hours ago
City, London
Evolution Recruitment Solutions
Salary: 35,000 - 45,000
Posted: 11 hours ago
City, London
Premier IT
Salary: £45000.00 - £55000.00 per annum
Posted: Yesterday
Bristol, Avon
Haybrook IT Resourcing Ltd
Salary: Up to £42,000 per annum
Posted: 10 hours ago
Cambridge, Cambridgeshire
ECM Selection
Salary: £Excellent
Posted: 11 hours ago
London
Verticality Ltd
Salary: £50000 - £65000 per annum, Benefits Benefits & equity
Posted: Yesterday
London
Austin Fraser
Salary: £50000 - £70000 per annum
Posted: Yesterday
London
Quant Capital
Salary: Up to £60,000 per annum + benefits
Posted: Yesterday
Reading, Berkshire
Deanslist Limited
Salary: From £40,000 to £50,000 per annum + Bonus + Excellent Benefits
Posted: Yesterday
Croydon, Surrey
Client Server
Salary: £50k to £60k + bonus + benefits
Posted: Yesterday
Reading, Berkshire
Searchability
Salary: £30000 - £45000 per annum
Posted: 2 days ago
Bristol, Avon
Itecco
Salary: £35000 per annum + Excellent Benefits
Posted: 2 days ago
London
Seven Recruitment
Salary: From £65,000 to £75,000 per annum
Posted: 11 hours ago
Sheffield, South Yorkshire
Capita Resourcing - IT Resourcing
Salary: £35000.00 - £45000.00 per annum
Posted: 2 days ago
London
Harvey Nash plc
Salary: £80000 - £85000 per annum + Bonus + stock options
Posted: Yesterday
Gloucestershire
Informatiq Consulting
Salary: £40000 - £45000 per annum + Benefits
Posted: 2 days ago
Manchester, Lancashire
Informatiq Consulting
Salary: £55000 - £60000 per annum + Benefits
Posted: 2 days ago
Lanarkshire
HAYS INFORMATION TECHNOLOGY
Salary: £31000.00 - £35000.00 per annum
Posted: Yesterday
Berkshire
Opus Recruitment Solutions Ltd
Salary: £60000 - £70000 per annum
Posted: 3 days ago
Dagenham, Essex
HAYS INFORMATION TECHNOLOGY
Posted: 2 days ago
Welwyn Garden City, Hertfordshire
Understanding Recruitment
Salary: £40000 - £50000 per annum + Execllent benefits
Posted: 3 days ago
Coventry, West Midlands (County)
Austin Fraser
Salary: £25000 - £32000 per annum + Package
Posted: 3 days ago