The following table provides summary statistics for permanent job vacancies advertised in London 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 27 March 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
England / London
3 months to
27 Mar 2017
Same period 2016 Same period 2015
Rank 344 333 358
Rank change year-on-year -11 +25  
Permanent jobs citing CentOS 247 364 339
As % of all permanent IT jobs advertised in London 0.74% 0.87% 0.79%
As % of the Operating Systems category 3.04% 3.30% 2.81%
Number of salaries quoted 217 314 288
Median salary £58,500 £55,000 £52,500
Median salary % change year-on-year +6.36% +4.76%  
90% offered a salary of more than £37,950 £38,000 £36,350
10% offered a salary of more than £80,000 £75,000 £68,250
UK excluding London median salary £43,000 £45,000 £42,500
% change year-on-year -4.44% +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 advertised in London with a requirement for operating system skills.

Operating System Skills
London
Permanent job vacancies with a requirement for operating system skills 8120 11034 12078
As % of all permanent IT job vacancies advertised in London 24.26% 26.30% 28.18%
Number of salaries quoted 6892 9444 10323
Median salary £50,000 £50,000 £48,000
Median salary % change year-on-year - +4.16%  
90% offered a salary of more than £28,500 £28,000 £27,500
10% offered a salary of more than £77,500 £72,500 £75,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in London

The job posting trend of jobs advertised in London 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 London

CentOS
Salary Trend in London

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

Salary trend for CentOS in London

CentOS
Salary Histogram in London

The salary distribution of IT jobs citing CentOS in London over the 3 months to 27 March 2017.

Salary histogram for CentOS in London

CentOS
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the London region over the 3 months to 27 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
City of London +67 45 £55,000 -18.51% 11
Kingston Upon Thames +9 4 £25,000 -48.71%
Croydon +11 3 £50,000 -16.66% 1
Surbiton +13 1 - - 1
Hammersmith -21 1 £70,000 +7.69% 1
Greenwich - 1 £47,500 -
CentOS
England

CentOS
Top 30 Co-occurring IT Skills in London

For the 6 months to 27 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 across the London region with a requirement for CentOS.

1 550 (100.00%) Linux
2 306 (55.64%) Red Hat
3 273 (49.64%) DevOps
4 266 (48.36%) Puppet
5 256 (46.55%) Python
6 235 (42.73%) Ansible
7 207 (37.64%) Windows
7 207 (37.64%) Red Hat Enterprise Linux
8 200 (36.36%) Opscode Chef
9 194 (35.27%) Bash Shell
10 176 (32.00%) Ubuntu
11 158 (28.73%) Perl
12 157 (28.55%) Amazon AWS
13 147 (26.73%) Java
14 138 (25.09%) Apache
15 136 (24.73%) Configuration Management
16 135 (24.55%) Jenkins
17 134 (24.36%) VMware
18 123 (22.36%) MySQL
19 116 (21.09%) Git (software)
20 113 (20.55%) Ruby
21 106 (19.27%) Continuous Integration
22 103 (18.73%) VMware Infrastructure
23 91 (16.55%) Finance
24 90 (16.36%) Agile Software Development
25 89 (16.18%) SQL
26 87 (15.82%) PHP
27 85 (15.45%) Docker
28 83 (15.09%) Tomcat
28 83 (15.09%) TCP/IP

CentOS
Co-occurring IT Skills in London 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
1 138 (25.09%) Apache
2 83 (15.09%) Tomcat
3 57 (10.36%) nginx
4 38 (6.91%) OpenStack
5 34 (6.18%) Elasticsearch
6 25 (4.55%) IIS
7 24 (4.36%) Confluence
8 22 (4.00%) Apache Spark
9 16 (2.91%) JBoss
10 9 (1.64%) Hubot
11 7 (1.27%) MS Exchange
12 5 (0.91%) Moodle
12 5 (0.91%) WildFly
13 4 (0.73%) Exchange Server 2013
13 4 (0.73%) GlassFish
13 4 (0.73%) Jetty
14 3 (0.55%) Apache Pig
14 3 (0.55%) Apache Solr
14 3 (0.55%) SharePoint
15 2 (0.36%) CMS
Applications
1 10 (1.82%) MS Excel
2 1 (0.18%) GNU Octave
2 1 (0.18%) MS Office
Business Applications
1 1 (0.18%) Oracle Applications
1 1 (0.18%) SAP Oil and Gas
Cloud Services
1 157 (28.55%) Amazon AWS
2 41 (7.45%) SaaS
3 40 (7.27%) Microsoft Azure
4 24 (4.36%) IaaS
5 21 (3.82%) Amazon EC2
6 18 (3.27%) AWS CloudFormation
7 17 (3.09%) Amazon S3
7 17 (3.09%) Cloud Computing
8 14 (2.55%) Amazon SQS
9 12 (2.18%) Amazon CloudWatch
9 12 (2.18%) Azure Active Directory
10 10 (1.82%) GitHub
10 10 (1.82%) Slack
11 8 (1.45%) PaaS
12 4 (0.73%) Akamai
13 3 (0.55%) Office 365
13 3 (0.55%) Virtual Private Cloud
14 2 (0.36%) AWS OpsWorks
14 2 (0.36%) DigitalOcean
14 2 (0.36%) G Suite
Communications & Networking
1 83 (15.09%) TCP/IP
2 80 (14.55%) Firewall
3 74 (13.45%) DNS
4 58 (10.55%) VPN
5 40 (7.27%) LDAP
5 40 (7.27%) SAN
6 34 (6.18%) HTTP
6 34 (6.18%) LAN
7 33 (6.00%) WAN
8 26 (4.73%) SNMP
9 25 (4.55%) Network Security
10 23 (4.18%) SSH
10 23 (4.18%) VLAN
11 22 (4.00%) SMTP
12 21 (3.82%) Kerberos
13 18 (3.27%) Wireless
14 17 (3.09%) Cisco ASA
15 16 (2.91%) Internet
15 16 (2.91%) VoIP
16 15 (2.73%) iSCSI
Database & Business Intelligence
1 123 (22.36%) MySQL
2 53 (9.64%) NoSQL
3 34 (6.18%) MongoDB
4 28 (5.09%) Hadoop
4 28 (5.09%) Redis
5 27 (4.91%) Big Data
6 23 (4.18%) Apache Cassandra
7 21 (3.82%) PostgreSQL
8 17 (3.09%) Amazon RDS
9 16 (2.91%) Data Warehouse
10 13 (2.36%) SQL Server
11 12 (2.18%) MariaDB
12 11 (2.00%) Relational Database
13 6 (1.09%) Blockchain
13 6 (1.09%) CouchDB
14 5 (0.91%) Informix
15 4 (0.73%) Data Mining
15 4 (0.73%) DB2
15 4 (0.73%) Oracle Database
16 3 (0.55%) Apache Hive
Development Applications
1 135 (24.55%) Jenkins
2 116 (21.09%) Git (software)
3 41 (7.45%) JIRA
3 41 (7.45%) TeamCity
4 31 (5.64%) Vagrant
5 30 (5.45%) Maven
5 30 (5.45%) Subversion
6 27 (4.91%) Atlassian Bamboo
7 19 (3.45%) Octopus Deploy
8 12 (2.18%) Gradle
9 11 (2.00%) FishEye
10 9 (1.64%) Mercurial
11 8 (1.45%) Ant
12 7 (1.27%) Hudson
12 7 (1.27%) JUnit
12 7 (1.27%) Team Foundation Server
13 6 (1.09%) Bitbucket
13 6 (1.09%) Cucumber
13 6 (1.09%) MSBuild
13 6 (1.09%) PHPUnit
General
1 91 (16.55%) Finance
2 41 (7.45%) Telecoms
3 24 (4.36%) Banking
4 16 (2.91%) Marketing
5 14 (2.55%) Games
6 11 (2.00%) Front Office
7 10 (1.82%) Retail
8 8 (1.45%) Financial Institution
9 5 (0.91%) Advertising
9 5 (0.91%) Back Office
9 5 (0.91%) Legal
10 4 (0.73%) Law
10 4 (0.73%) Pharmaceutical
11 2 (0.36%) Publishing
12 1 (0.18%) Electronics
12 1 (0.18%) Manufacturing
12 1 (0.18%) Music Industry
12 1 (0.18%) Online Betting
Job Titles
1 163 (29.64%) Administrator
2 162 (29.45%) DevOps Engineer
3 158 (28.73%) Systems Administrator
4 132 (24.00%) Linux Engineer
5 97 (17.64%) Linux Administrator
6 93 (16.91%) Linux Systems Administrator
7 73 (13.27%) Linux/Unix DevOps
8 54 (9.82%) Linux DevOps Engineer
9 44 (8.00%) DevOps Administrator
10 42 (7.64%) AWS DevOps
10 42 (7.64%) AWS Engineer
11 35 (6.36%) Systems Engineer
12 33 (6.00%) Developer
12 33 (6.00%) Senior Systems Administrator
13 31 (5.64%) Senior DevOps
13 31 (5.64%) Senior DevOps Engineer
14 26 (4.73%) Security Engineer
15 25 (4.55%) Support Engineer
16 24 (4.36%) Senior Linux Administrator
17 23 (4.18%) Senior Linux Engineer
Libraries, Frameworks & Software Standards
1 66 (12.00%) Web Services
2 63 (11.45%) LAMP
3 32 (5.82%) Elastic Stack
4 30 (5.45%) Node.js
5 22 (4.00%) Sensu
6 19 (3.45%) RESTful
7 18 (3.27%) Memcached
8 17 (3.09%) CSS
8 17 (3.09%) HTML
8 17 (3.09%) LEMP Stack
9 14 (2.55%) FIX Protocol
10 13 (2.36%) .NET
10 13 (2.36%) Boost C++ Libraries
10 13 (2.36%) REST
11 12 (2.18%) SOAP
12 9 (1.64%) HTML5
13 8 (1.45%) jQuery
13 8 (1.45%) RabbitMQ
13 8 (1.45%) Sphinx
14 7 (1.27%) GWT
Miscellaneous
1 61 (11.09%) Computer Science
2 52 (9.45%) Data Centre
3 37 (6.73%) Hedge funds
4 36 (6.55%) Fintech
5 28 (5.09%) Analytical Skills
5 28 (5.09%) Linux Command Line
6 18 (3.27%) PKI
7 14 (2.55%) Management Information System
8 10 (1.82%) Mobile App
9 6 (1.09%) Enterprise Software
9 6 (1.09%) Eurex
10 5 (0.91%) Clustering
10 5 (0.91%) e-Learning
10 5 (0.91%) iPad
11 4 (0.73%) Learning Management System
11 4 (0.73%) Replication
11 4 (0.73%) VLE
12 3 (0.55%) Enterprise Storage
12 3 (0.55%) Private Cloud
12 3 (0.55%) Social Media
Operating Systems
1 550 (100.00%) Linux
2 207 (37.64%) Red Hat Enterprise Linux
2 207 (37.64%) Windows
3 176 (32.00%) Ubuntu
4 72 (13.09%) Unix
5 67 (12.18%) Windows Server
6 53 (9.64%) Debian
7 47 (8.55%) Windows Server 2008
7 47 (8.55%) Windows Server 2012
8 22 (4.00%) Fedora
9 17 (3.09%) SUSE Linux Enterprise Server
10 11 (2.00%) SUSE
11 10 (1.82%) Solaris
12 7 (1.27%) AIX
13 6 (1.09%) Windows 7
13 6 (1.09%) Windows Server 2003
14 3 (0.55%) CoreOS
14 3 (0.55%) Windows 10
14 3 (0.55%) Windows 8
15 2 (0.36%) Kali Linux
Processes & Methodologies
1 273 (49.64%) DevOps
2 136 (24.73%) Configuration Management
3 106 (19.27%) Continuous Integration
4 90 (16.36%) Agile Software Development
5 77 (14.00%) Open Source
6 39 (7.09%) High Availability
7 30 (5.45%) E-Commerce
8 28 (5.09%) Migration
9 27 (4.91%) SIEM
10 26 (4.73%) Continuous Deployment
11 25 (4.55%) Information Security
12 23 (4.18%) Analytics
12 23 (4.18%) Continuous Improvement
12 23 (4.18%) Performance Tuning
13 22 (4.00%) Change Control
13 22 (4.00%) Identity Management
13 22 (4.00%) Performance Monitoring
14 21 (3.82%) Disaster Recovery
14 21 (3.82%) Release Management
15 20 (3.64%) Visualisation
Programming Languages
1 256 (46.55%) Python
2 194 (35.27%) Bash Shell
3 158 (28.73%) Perl
4 147 (26.73%) Java
5 113 (20.55%) Ruby
6 89 (16.18%) SQL
7 87 (15.82%) PHP
8 44 (8.00%) PowerShell
9 40 (7.27%) JavaScript
10 27 (4.91%) Shell Script
11 26 (4.73%) C++
12 19 (3.45%) C
13 16 (2.91%) Korn
14 14 (2.55%) C#
15 12 (2.18%) AWK
15 12 (2.18%) Bourne shell
16 11 (2.00%) Groovy
17 9 (1.64%) Go
18 8 (1.45%) PL/SQL
19 5 (0.91%) T-SQL
Qualifications
1 67 (12.18%) Degree
2 38 (6.91%) Cisco Certification
3 21 (3.82%) AWS Certification
4 19 (3.45%) CCNP
5 15 (2.73%) CCNA
6 12 (2.18%) CCSP
6 12 (2.18%) Security Cleared
7 11 (2.00%) Microsoft Certification
7 11 (2.00%) RHCE
7 11 (2.00%) SC Cleared
8 10 (1.82%) VMware Certified Professional (VCP)
9 9 (1.64%) MCSA
10 8 (1.45%) RHCSA
11 7 (1.27%) CCDP
11 7 (1.27%) RHCA
12 6 (1.09%) (ISC)2 CCSP
12 6 (1.09%) CESG Certified Professional
12 6 (1.09%) CISM
12 6 (1.09%) CISSP
13 4 (0.73%) LPIC
Quality Assurance & Compliance
1 19 (3.45%) QA
2 14 (2.55%) PCI DSS
3 11 (2.00%) ISO/IEC 27001
4 4 (0.73%) SLA
5 1 (0.18%) Cyber Essentials
5 1 (0.18%) GDPR
5 1 (0.18%) Sarbanes-Oxley
System Software
1 103 (18.73%) VMware Infrastructure
2 85 (15.45%) Docker
3 44 (8.00%) Active Directory
4 25 (4.55%) iptables
5 21 (3.82%) KVM
6 20 (3.64%) Varnish
7 18 (3.27%) Hyper-V
7 18 (3.27%) NFS
8 16 (2.91%) VMware ESXi
9 15 (2.73%) Virtual Machines
10 14 (2.55%) vSphere
10 14 (2.55%) Xen
11 12 (2.18%) XenServer
12 7 (1.27%) Squid
12 7 (1.27%) VirtualBox
13 6 (1.09%) Snort
14 4 (0.73%) Corosync
15 3 (0.55%) GlusterFS
15 3 (0.55%) Postfix
15 3 (0.55%) vCloud
Systems Management
1 266 (48.36%) Puppet
2 235 (42.73%) Ansible
3 200 (36.36%) Opscode Chef
4 66 (12.00%) Nagios
5 50 (9.09%) Salt
6 40 (7.27%) Terraform
7 38 (6.91%) SELinux
8 29 (5.27%) CFEngine
9 27 (4.91%) ZABBIX
10 25 (4.55%) Kubernetes
11 23 (4.18%) logstash
12 17 (3.09%) Kibana
13 15 (2.73%) Packer
14 14 (2.55%) Rundeck
15 9 (1.64%) Icinga
15 9 (1.64%) Mesos
16 7 (1.27%) Cisco CUCM
16 7 (1.27%) SCCM
17 6 (1.09%) cPanel
17 6 (1.09%) OSSEC
Vendors
1 306 (55.64%) Red Hat
2 134 (24.36%) VMware
3 71 (12.91%) Cisco
4 37 (6.73%) HP
5 31 (5.64%) Microsoft
6 26 (4.73%) Atlassian
7 19 (3.45%) Dell
7 19 (3.45%) Juniper
8 17 (3.09%) Oracle
9 13 (2.36%) Google
9 13 (2.36%) New Relic
10 12 (2.18%) CheckPoint
10 12 (2.18%) Trend Micro
11 11 (2.00%) EMC
12 10 (1.82%) Fortinet
12 10 (1.82%) Intel Security
12 10 (1.82%) SonicWALL
13 9 (1.64%) Meraki
13 9 (1.64%) ServiceNow
13 9 (1.64%) Splunk
London
Mortimer Spinks
Salary: £60000 - £70000 per annum
Posted: 12 hours ago
London
Send
Salary: From £75,000 to £95,000 per annum Full Benefits package
Posted: 10 hours ago
South East London
Stratospherec
Salary: From £50,000 to £60,000 per annum excellent benefits package
Posted: 7 hours ago
Central London / West End
Harris Global
Salary: From £70,000 to £80,000 per annum
Posted: 15 hours ago
City, London
Harrington Starr
Salary: £70000 - £90000 per annum
Posted: 2 days ago
City, London
Quant Capital
Salary: Up to £90,000 per annum Bonus Medical Pension
Posted: 8 hours ago
London
Austin Fraser
Salary: £30000 - £55000 per annum
Posted: 5 days ago
City, London
Oliver Bernard
Salary: £90000 - £110000 per annum + Benefits
Posted: 4 days ago
North West London
Franklin Fitch Limited
Salary: Up to £55,000 per annum
Posted: 4 days ago
City, London
Premier IT
Salary: £45000.00 - £55000.00 per annum
Posted: 5 days ago
London
Computer People
Salary: £40000.00 - £50000.00 per annum
Posted: 13 hours ago
London
Verticality Ltd
Salary: £50000 - £65000 per annum, Benefits Benefits & equity
Posted: 5 days ago
London
Austin Fraser
Salary: £50000 - £70000 per annum
Posted: 5 days ago
London
Quant Capital
Salary: Up to £60,000 per annum + benefits
Posted: 5 days ago
London
Digitech Resourcing Ltd
Salary: From £550 to £650 per day
Posted: 4 days ago
London
Seven Recruitment
Salary: From £75,000 to £90,000 per annum
Posted: 4 days ago
London
Seven Recruitment
Salary: From £70,000 to £90,000 per annum
Posted: 4 days ago
Croydon, Surrey
Client Server
Salary: £50k to £60k + bonus + benefits
Posted: 5 days ago
London
Digitech Resourcing Ltd
Salary: From £65,000 to £70,000 per annum plus bonus and benefits
Posted: 4 days ago
London
Harvey Nash plc
Salary: £80000 - £85000 per annum + Bonus + stock options
Posted: 5 days ago
Dagenham, Essex
HAYS INFORMATION TECHNOLOGY
Posted: 6 days ago
City, London
Evolution Recruitment Solutions
Salary: 35,000 - 45,000
Posted: 4 days ago
London
Computer People
Salary: £40000.00 - £60000.00 per annum
Posted: 3 days ago
London
Seven Recruitment
Salary: From £65,000 to £75,000 per annum
Posted: 4 days ago
Central London / West End
Piksel
Salary: Competitive
Posted: 14 days ago
Central London / West End
Stratospherec
Salary: From £45,000 to £55,000 per annum Excellent benefits & Bonuses
Posted: 5 days ago
East London
JM
Salary: £35000 - £45000 per annum
Posted: 6 days ago
London
CGI
Salary: £75000 - £90000 per annum + benefits
Posted: 13 days ago
Hayes, Middlesex
Rackspace
Salary: From £65,000 to £90,000 per annum Competitive + Benefits + On Call + B
Posted: 12 days ago
Hayes, Middlesex
Rackspace
Salary: From £65,000 to £90,000 per annum Competitive + Bonus + Benefits + On
Posted: 12 days ago