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 26 June 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
England / London
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank 312 326 368
Rank change year-on-year +14 +42  
Permanent jobs citing CentOS 340 361 334
As % of all permanent IT jobs advertised in London 0.92% 0.91% 0.75%
As % of the Operating Systems category 3.56% 3.57% 2.77%
Number of salaries quoted 299 317 292
Median salary £62,500 £55,000 £55,000
Median salary % change year-on-year +13.63% -  
90% offered a salary of more than £37,500 £40,000 £35,000
10% offered a salary of more than £85,000 £80,000 £69,750
UK excluding London median salary £45,000 £47,500 £41,250
% change year-on-year -5.26% +15.15%  

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 9559 10101 12079
As % of all permanent IT job vacancies advertised in London 25.95% 25.59% 26.94%
Number of salaries quoted 7753 8850 10424
Median salary £52,500 £52,000 £50,000
Median salary % change year-on-year +0.96% +4.00%  
90% offered a salary of more than £30,000 £28,000 £28,500
10% offered a salary of more than £80,000 £75,000 £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 26 June 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 26 June 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 +72 71 £50,000 - 7
Croydon +13 9 £16,500 -65.26%
Surbiton - 7 - -
Dagenham - 1 - -
Hammersmith - 1 £70,000 -
Wimbledon - 1 £40,000 -
CentOS
England

For the 6 months to 26 June 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.

1 583 (100.00%) Linux
2 333 (57.12%) Red Hat
3 262 (44.94%) DevOps
4 260 (44.60%) Python
5 235 (40.31%) Puppet
6 223 (38.25%) Ansible
7 208 (35.68%) Red Hat Enterprise Linux
8 203 (34.82%) Ubuntu
9 187 (32.08%) Windows
10 182 (31.22%) VMware
11 181 (31.05%) Apache
12 171 (29.33%) Perl
13 166 (28.47%) Bash Shell
14 165 (28.30%) Firewall
15 162 (27.79%) Java
16 154 (26.42%) MySQL
17 153 (26.24%) Nagios
18 143 (24.53%) Opscode Chef
19 138 (23.67%) Amazon AWS
20 131 (22.47%) DNS
21 128 (21.96%) VMware Infrastructure
22 125 (21.44%) Open Source
23 122 (20.93%) Tomcat
23 122 (20.93%) Jenkins
24 113 (19.38%) Cisco
25 112 (19.21%) Ruby
25 112 (19.21%) Agile Software Development
25 112 (19.21%) Docker
26 103 (17.67%) VPN
26 103 (17.67%) Git (software)

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
1 181 (31.05%) Apache
2 122 (20.93%) Tomcat
3 57 (9.78%) nginx
4 37 (6.35%) OpenStack
5 35 (6.00%) Elasticsearch
6 14 (2.40%) CMS
7 12 (2.06%) IIS
8 8 (1.37%) Apache Spark
9 7 (1.20%) SharePoint
10 5 (0.86%) JBoss
10 5 (0.86%) Moodle
11 4 (0.69%) Confluence
11 4 (0.69%) WordPress
12 2 (0.34%) CloudStack
12 2 (0.34%) Exchange Server 2013
12 2 (0.34%) Jetty
12 2 (0.34%) MS Exchange
12 2 (0.34%) WebSphere
13 1 (0.17%) Joomla!
13 1 (0.17%) SAS
Applications
1 5 (0.86%) Microsoft Office
2 1 (0.17%) MS Visio
2 1 (0.17%) Spreadsheet
Cloud Services
1 138 (23.67%) Amazon AWS
2 43 (7.38%) Microsoft Azure
3 23 (3.95%) Amazon EC2
3 23 (3.95%) Cloud Computing
4 21 (3.60%) IaaS
5 18 (3.09%) Amazon S3
5 18 (3.09%) AWS CloudFormation
6 16 (2.74%) Virtual Private Cloud
7 15 (2.57%) GitHub
7 15 (2.57%) Office 365
7 15 (2.57%) SaaS
8 14 (2.40%) Google Cloud Platform
9 10 (1.72%) PaaS
10 8 (1.37%) Amazon SQS
10 8 (1.37%) Sumo Logic
11 7 (1.20%) Rackspace Cloud
12 5 (0.86%) AWS Lambda
13 4 (0.69%) Amazon ELB
14 3 (0.51%) Azure Active Directory
14 3 (0.51%) Route 53
Communications & Networking
1 165 (28.30%) Firewall
2 131 (22.47%) DNS
3 103 (17.67%) VPN
4 101 (17.32%) TCP/IP
5 76 (13.04%) SAN
6 74 (12.69%) WAN
7 67 (11.49%) LAN
8 65 (11.15%) SNMP
9 63 (10.81%) HTTP
10 60 (10.29%) SSH
11 52 (8.92%) LDAP
12 42 (7.20%) iSCSI
13 39 (6.69%) Network Security
14 33 (5.66%) Internet
15 32 (5.49%) SMTP
16 31 (5.32%) DHCP
17 30 (5.15%) Wireless
18 27 (4.63%) VLAN
19 25 (4.29%) IPsec
20 23 (3.95%) MRTG
Database & Business Intelligence
1 154 (26.42%) MySQL
2 67 (11.49%) NoSQL
3 53 (9.09%) Apache Cassandra
4 38 (6.52%) PostgreSQL
5 35 (6.00%) MongoDB
6 30 (5.15%) Redis
7 27 (4.63%) MariaDB
8 22 (3.77%) Big Data
9 21 (3.60%) Amazon RDS
10 18 (3.09%) SQL Server
11 17 (2.92%) Relational Database
12 14 (2.40%) Hadoop
13 11 (1.89%) Data Warehouse
14 7 (1.20%) InterSystems Cache
15 6 (1.03%) Data Mining
16 5 (0.86%) Amazon Redshift
17 4 (0.69%) SQL Server 2008
17 4 (0.69%) SQL Server 2012
18 3 (0.51%) InfluxDB
18 3 (0.51%) SQLite
Development Applications
1 122 (20.93%) Jenkins
2 103 (17.67%) Git (software)
3 30 (5.15%) TeamCity
4 22 (3.77%) Maven
5 15 (2.57%) Subversion
6 14 (2.40%) JIRA
7 13 (2.23%) Vagrant
8 11 (1.89%) Atlassian Bamboo
8 11 (1.89%) Mercurial
9 10 (1.72%) Artifactory
10 9 (1.54%) Gradle
11 8 (1.37%) Bitbucket
11 8 (1.37%) Team Foundation Server
12 7 (1.20%) GoCD
13 6 (1.03%) Grunt
13 6 (1.03%) Travis CI
13 6 (1.03%) Visual Studio Team System
14 5 (0.86%) JUnit
14 5 (0.86%) Octopus Deploy
15 4 (0.69%) PHPUnit
General
1 82 (14.07%) Finance
2 35 (6.00%) Telecoms
3 14 (2.40%) Games
4 13 (2.23%) Banking
5 12 (2.06%) Online Betting
6 7 (1.20%) Law
7 6 (1.03%) Marketing
8 5 (0.86%) Back Office
8 5 (0.86%) Retail
9 4 (0.69%) Music Industry
10 3 (0.51%) Front Office
11 2 (0.34%) Advertising
11 2 (0.34%) Legal
12 1 (0.17%) Financial Institution
12 1 (0.17%) Investment Banking
12 1 (0.17%) Publishing
Job Titles
1 171 (29.33%) DevOps Engineer
2 128 (21.96%) Linux Engineer
3 110 (18.87%) Administrator
4 105 (18.01%) Systems Administrator
5 77 (13.21%) Linux Administrator
5 77 (13.21%) Linux/Unix DevOps
6 72 (12.35%) Linux Systems Administrator
7 54 (9.26%) Senior DevOps
7 54 (9.26%) Senior DevOps Engineer
8 50 (8.58%) Linux DevOps Engineer
9 43 (7.38%) Security Engineer
10 42 (7.20%) Systems Engineer
11 40 (6.86%) Developer
12 35 (6.00%) Network Engineer
13 32 (5.49%) Infrastructure Engineer
14 31 (5.32%) Analyst
15 29 (4.97%) Cloud Engineer
16 28 (4.80%) DevOps Administrator
17 26 (4.46%) AWS Engineer
18 24 (4.12%) Senior Linux Engineer
Libraries, Frameworks & Software Standards
1 80 (13.72%) LAMP
2 45 (7.72%) Web Services
3 39 (6.69%) Kafka
4 31 (5.32%) LEMP Stack
5 24 (4.12%) REST
6 23 (3.95%) Elastic Stack
7 22 (3.77%) RESTful
7 22 (3.77%) Sensu
8 20 (3.43%) CSS
8 20 (3.43%) HTML
9 19 (3.26%) FIX Protocol
9 19 (3.26%) SOAP
10 18 (3.09%) Memcached
10 18 (3.09%) Node.js
11 15 (2.57%) JSON
12 11 (1.89%) jQuery
13 10 (1.72%) HTML5
13 10 (1.72%) RabbitMQ
14 9 (1.54%) Boost C++ Libraries
14 9 (1.54%) XML
Miscellaneous
1 80 (13.72%) Computer Science
2 63 (10.81%) Data Centre
3 51 (8.75%) Analytical Skills
4 44 (7.55%) Linux Command Line
5 28 (4.80%) Fintech
6 23 (3.95%) PKI
7 22 (3.77%) Management Information System
8 19 (3.26%) Hedge funds
9 16 (2.74%) Public Cloud
10 12 (2.06%) Hybrid Cloud
11 10 (1.72%) Clustering
12 9 (1.54%) Enterprise Software
13 8 (1.37%) Enterprise Storage
13 8 (1.37%) Eurex
13 8 (1.37%) Foreign Exchange (FX)
13 8 (1.37%) Replication
14 7 (1.20%) CMDB
14 7 (1.20%) Mobile App
14 7 (1.20%) Private Cloud
15 5 (0.86%) EMC VNX
Operating Systems
1 583 (100.00%) Linux
2 208 (35.68%) Red Hat Enterprise Linux
3 203 (34.82%) Ubuntu
4 187 (32.08%) Windows
5 82 (14.07%) Windows Server
6 79 (13.55%) Debian
7 70 (12.01%) Unix
8 40 (6.86%) Windows Server 2012
9 37 (6.35%) Windows Server 2008
10 22 (3.77%) SUSE Linux Enterprise Server
11 17 (2.92%) Solaris
12 16 (2.74%) Fedora
12 16 (2.74%) Kali Linux
13 15 (2.57%) AIX
14 12 (2.06%) SUSE
15 9 (1.54%) Windows 7
16 8 (1.37%) Mac OS X
17 7 (1.20%) CoreOS
18 3 (0.51%) Windows 10
18 3 (0.51%) Windows Server 2003
Processes & Methodologies
1 262 (44.94%) DevOps
2 125 (21.44%) Open Source
3 112 (19.21%) Agile Software Development
4 96 (16.47%) Configuration Management
5 59 (10.12%) Continuous Improvement
5 59 (10.12%) Continuous Integration
5 59 (10.12%) High Availability
6 51 (8.75%) SIEM
7 47 (8.06%) Load Balancing
8 41 (7.03%) Security Patching
9 37 (6.35%) E-Commerce
10 33 (5.66%) Task Automation
11 31 (5.32%) Information Security
12 30 (5.15%) Change Control
13 27 (4.63%) Identity Management
13 27 (4.63%) Low Latency
14 26 (4.46%) Performance Tuning
14 26 (4.46%) Scrum
15 24 (4.12%) ITIL
15 24 (4.12%) Vulnerability Management
Programming Languages
1 260 (44.60%) Python
2 171 (29.33%) Perl
3 166 (28.47%) Bash Shell
4 162 (27.79%) Java
5 112 (19.21%) Ruby
6 99 (16.98%) PHP
7 74 (12.69%) SQL
8 51 (8.75%) JavaScript
9 45 (7.72%) PowerShell
10 32 (5.49%) Go
11 31 (5.32%) Shell Script
12 25 (4.29%) C++
13 15 (2.57%) Groovy
13 15 (2.57%) Korn
14 13 (2.23%) C-shell
15 12 (2.06%) C
16 10 (1.72%) AWK
16 10 (1.72%) Bourne shell
17 7 (1.20%) C#
18 5 (0.86%) PL/SQL
Qualifications
1 72 (12.35%) Degree
2 47 (8.06%) Computer Science Degree
3 40 (6.86%) Cisco Certification
4 27 (4.63%) CCNP
4 27 (4.63%) RHCE
5 22 (3.77%) CCSP
6 21 (3.60%) Security Cleared
7 17 (2.92%) Microsoft Certification
7 17 (2.92%) RHCSA
7 17 (2.92%) SC Cleared
8 16 (2.74%) RHCA
9 14 (2.40%) CCDP
9 14 (2.40%) CESG Certified Professional
10 13 (2.23%) CISSP
11 12 (2.06%) VMware Certified Professional (VCP)
12 11 (1.89%) CCNA
12 11 (1.89%) MCSE
13 10 (1.72%) Linux+ Certification
13 10 (1.72%) LPIC
14 8 (1.37%) CISM
Quality Assurance & Compliance
1 35 (6.00%) ISO/IEC 27001
1 35 (6.00%) PCI DSS
2 8 (1.37%) GDPR
2 8 (1.37%) Sarbanes-Oxley
3 6 (1.03%) Cyber Essentials
3 6 (1.03%) SLA
4 4 (0.69%) QA
5 1 (0.17%) GCP
System Software
1 128 (21.96%) VMware Infrastructure
2 112 (19.21%) Docker
3 54 (9.26%) Active Directory
4 42 (7.20%) NFS
5 41 (7.03%) VMware ESXi
6 38 (6.52%) XenServer
7 36 (6.17%) iptables
7 36 (6.17%) KVM
8 31 (5.32%) Hyper-V
9 25 (4.29%) Varnish
10 23 (3.95%) vSphere
11 17 (2.92%) Virtual Machines
11 17 (2.92%) Xen
12 15 (2.57%) pfSense
12 15 (2.57%) Snort
13 8 (1.37%) XenApp
14 7 (1.20%) vCloud
15 5 (0.86%) LXC
15 5 (0.86%) OpenSIPS
16 3 (0.51%) GPFS
Systems Management
1 235 (40.31%) Puppet
2 223 (38.25%) Ansible
3 153 (26.24%) Nagios
4 143 (24.53%) Opscode Chef
5 51 (8.75%) SELinux
6 48 (8.23%) Kubernetes
6 48 (8.23%) Terraform
7 35 (6.00%) CFEngine
8 34 (5.83%) ZABBIX
9 27 (4.63%) logstash
10 23 (3.95%) Kibana
11 22 (3.77%) Icinga
12 20 (3.43%) Salt
13 16 (2.74%) Rundeck
13 16 (2.74%) SCCM
14 14 (2.40%) OSSEC
15 11 (1.89%) FortiGate
15 11 (1.89%) Mesos
16 10 (1.72%) HAProxy
17 9 (1.54%) Graphite
Vendors
1 333 (57.12%) Red Hat
2 182 (31.22%) VMware
3 113 (19.38%) Cisco
4 65 (11.15%) HP
5 57 (9.78%) Microsoft
6 41 (7.03%) Juniper
7 27 (4.63%) Citrix
8 26 (4.46%) Dell
9 25 (4.29%) Palo Alto
10 24 (4.12%) McAfee
10 24 (4.12%) Splunk
11 23 (3.95%) CheckPoint
12 22 (3.77%) Fortinet
12 22 (3.77%) SaltStack
13 18 (3.09%) Google
14 17 (2.92%) SonicWALL
15 16 (2.74%) LogRhythm
15 16 (2.74%) NetApp
15 16 (2.74%) SolarWinds
16 15 (2.57%) Aruba
London
Verticality Ltd
Salary: £55000 - £65000 per annum, Benefits Benefits & Bonus
Posted: 15 hours ago
Central London / West End
Evolution Recruitment Solutions
Salary: 60,000 to 70,000
Posted: 17 hours ago
City, London
Harrington Starr
Salary: £70000 - £90000 per annum
Posted: Yesterday
City, London
ComputAppoint
Salary: £70000 - £85000 per annum
Posted: 3 days ago
London
Open Select Recruitment
Salary: £50000 - £95000 per annum + bonus and benefits
Posted: 2 days ago
South East London
Franklin Fitch Limited
Salary: Up to £60,000 per annum
Posted: 4 days ago
London
Oliver Bernard
Salary: £55000 - £65000 per annum + Bonus + Benefits
Posted: 4 days ago
South East London
flatraterecruiting
Salary: From £45,000 to £55,000 per annum £45000.00 - £55000.00 per annum
Posted: 3 days ago
London
Oliver Bernard
Salary: £60000 - £70000 per annum + Benefits
Posted: 5 days ago
London
Senitor Associates
Salary: £34000 - £41000 per annum
Posted: 3 days ago
London
Austin Fraser
Salary: £6000 - £50000 per annum
Posted: 6 days ago
Isleworth, Middlesex
Opus Resourcing Ltd
Salary: £60000 - £85000 per annum + Bens + Bonus to 10%
Posted: 5 days ago
London
Energon People
Salary: £50000.00 - £60000 per annum
Posted: 4 days ago
West London
Sky Betting and Gaming
Salary: Bonus + Benefits
Posted: 3 days ago
West London
Sky Betting and Gaming
Salary: Bonus + Benefits
Posted: 3 days ago
London
ISL
Salary: £60000.00 - £70000.00 per annum + Benefits
Posted: 6 days ago
Isleworth, Middlesex
Opus Resourcing Ltd
Salary: £80000 - £90000 per annum + Significant Bens + Bonus
Posted: 5 days ago
West London
Oscar
Salary: £25000 - £40000 per annum
Posted: 6 days ago
City, London
Stafford-Sharp Associates
Salary: £60000.00 - £75000.00 per annum
Posted: 6 days ago
London
Maclean Moore Consulting
Salary: From £50,000 to £65,000 per annum
Posted: 6 days ago
London
Opus Recruitment Solutions Ltd
Salary: £40000 - £48000 per annum
Posted: 5 days ago
London
Stafford-Sharp Associates
Salary: £50000.00 - £75000.00 per annum + Bens + Stock
Posted: 6 days ago
Central London / West End
Capita Resourcing - IT Resourcing
Salary: £37000 - £45000 per annum
Posted: 5 days ago
London
Stafford-Sharp Associates
Salary: From £60,000 to £75,000 per annum + Bens + Stock
Posted: 6 days ago
London
Harris Global
Salary: Up to £46,000 per annum Up to £46,000 + Bonus & Benefits!!
Posted: 6 days ago
Kingston Upon Thames, Surrey
onezeero.
Salary: £75000 - £85000 per annum
Posted: 5 days ago
City, London
Hotels.com
Salary: Competitive
Posted: 17 days ago
City, London
Hotels.com
Salary: Competitive
Posted: 17 days ago
North West London
Frances Crick Group
Salary: From £41,600 to £47,000 per annum
Posted: 13 days ago
West London
Sky Betting and Gaming
Salary: £45000 - £55000 per annum + Bonus + Benefits
Posted: 19 days ago