The table below looks at the statistics for CentOS skills in IT jobs advertised for the City of London region. Included is a guide to the salaries offered in IT jobs that have cited CentOS over the 3 months to 9 December 2016 with a comparison to the same period over the previous 2 years.

3 months to
9 Dec 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 207 218 274
Rank change year-on-year
+11 +56
Permanent jobs citing CentOS 29 45 55
As % of all permanent IT jobs located in the City of London 0.55% 0.66% 0.50%
As % of the Operating Systems category 2.25% 2.52% 1.86%
Number of salaries quoted 21 44 52
Median salary £62,500 £47,500 £48,750
Median salary % change year-on-year
+31.57% -2.56%
90% offered a salary of more than £40,000 £38,000 £35,150
10% offered a salary of more than £64,000 £71,000 £64,750
UK excluding London median salary £45,000 £45,000 £38,500
% change year-on-year
- +16.88%
CentOS
London

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in permanent jobs advertised in the City of London region.

Operating Systems Category
City of London
Permanent IT job ads with a match in the
Operating Systems category
1289 1787 2963
As % of all permanent IT jobs located in the City of London 24.24% 26.32% 26.92%
Number of salaries quoted 1160 1577 2588
Median salary £55,000 £52,500 £49,000
Median salary % change year-on-year
+4.76% +7.14%
90% offered a salary of more than £30,000 £28,500 £27,500
10% offered a salary of more than £87,500 £70,000 £80,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Jobs Demand Trend in the City of London

The demand trend of job ads across the City of London region citing CentOS as a proportion of all IT jobs with a match in the Operating Systems category.

CentOS Jobs Demand Trend in the City of London

CentOS
Salary Trend in the City of London

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

CentOS Salary Trend in the City of London

CentOS
Salary Histogram in the City of London

This chart provides a salary histogram for IT jobs citing CentOS across the City of London region over the 3 months to 9 December 2016.

CentOS Salary Histogram in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 9 December 2016, 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 City of London region with a requirement for CentOS.

1 49 (100.00%) Linux
2 32 (65.31%) DevOps
3 30 (61.22%) Red Hat Enterprise Linux
4 29 (59.18%) Red Hat
5 27 (55.10%) Puppet
6 24 (48.98%) Configuration Management
6 24 (48.98%) Windows
7 22 (44.90%) Python
7 22 (44.90%) Finance
8 21 (42.86%) Ansible
9 20 (40.82%) Opscode Chef
9 20 (40.82%) Apache
10 19 (38.78%) Java
10 19 (38.78%) Jenkins
11 15 (30.61%) Continuous Integration
11 15 (30.61%) Tomcat
12 14 (28.57%) Bash Shell
13 12 (24.49%) Docker
13 12 (24.49%) Maven
14 11 (22.45%) Unix
14 11 (22.45%) SQL
14 11 (22.45%) Continuous Deployment
15 10 (20.41%) Git (software)
15 10 (20.41%) OpenStack
15 10 (20.41%) Windows Server 2012
15 10 (20.41%) NoSQL
16 9 (18.37%) Windows Server 2008
16 9 (18.37%) Amazon AWS
16 9 (18.37%) Visualisation
16 9 (18.37%) Hadoop

CentOS
Top Related IT Skills in the City of 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 20 (40.82%) Apache
2 15 (30.61%) Tomcat
3 10 (20.41%) OpenStack
4 9 (18.37%) Apache Spark
5 8 (16.33%) Confluence
6 6 (12.24%) JBoss
7 1 (2.04%) Exchange Server 2013
7 1 (2.04%) IIS
7 1 (2.04%) MS Exchange
7 1 (2.04%) SharePoint
7 1 (2.04%) WebLogic
Business Applications
1 1 (2.04%) CODA-Financials
Cloud Services
1 9 (18.37%) Amazon AWS
2 3 (6.12%) IaaS
2 3 (6.12%) Microsoft Azure
2 3 (6.12%) PaaS
3 2 (4.08%) Amazon EC2
4 1 (2.04%) Amazon CloudWatch
4 1 (2.04%) Amazon S3
4 1 (2.04%) Amazon SQS
4 1 (2.04%) AWS CloudFormation
4 1 (2.04%) SaaS
Communications & Networking
1 9 (18.37%) Firewall
2 6 (12.24%) Network Security
2 6 (12.24%) TCP/IP
3 4 (8.16%) iSCSI
3 4 (8.16%) WAN
4 3 (6.12%) Cisco ASA
4 3 (6.12%) DNS
4 3 (6.12%) SAN
4 3 (6.12%) Wireshark
5 2 (4.08%) Fibre Channel
5 2 (4.08%) LAN
5 2 (4.08%) VLAN
5 2 (4.08%) VoIP
5 2 (4.08%) VPN
6 1 (2.04%) DHCP
6 1 (2.04%) FTP
6 1 (2.04%) HTTP
6 1 (2.04%) Internet
6 1 (2.04%) OSPF
6 1 (2.04%) SMTP
Database & Business Intelligence
1 10 (20.41%) NoSQL
2 9 (18.37%) Hadoop
3 7 (14.29%) Apache Cassandra
4 5 (10.20%) MongoDB
4 5 (10.20%) MySQL
5 2 (4.08%) Amazon RDS
5 2 (4.08%) DB2
5 2 (4.08%) Oracle Database
5 2 (4.08%) PostgreSQL
6 1 (2.04%) Data Warehouse
6 1 (2.04%) SQL Server
Development Applications
1 19 (38.78%) Jenkins
2 12 (24.49%) Maven
3 10 (20.41%) Git (software)
4 9 (18.37%) JIRA
5 8 (16.33%) FishEye
6 6 (12.24%) Subversion
7 4 (8.16%) Vagrant
8 3 (6.12%) CruiseControl
9 2 (4.08%) Gradle
10 1 (2.04%) Atlassian Bamboo
10 1 (2.04%) TeamCity
General
1 22 (44.90%) Finance
2 7 (14.29%) Banking
2 7 (14.29%) Front Office
3 2 (4.08%) Legal
4 1 (2.04%) Back Office
4 1 (2.04%) Pharmaceutical
4 1 (2.04%) Telecoms
Job Titles
1 22 (44.90%) DevOps Engineer
2 8 (16.33%) Linux/Unix DevOps
3 7 (14.29%) Architect
4 6 (12.24%) Developer
4 6 (12.24%) Java Developer
4 6 (12.24%) Linux DevOps Engineer
4 6 (12.24%) Linux Engineer
4 6 (12.24%) Senior DevOps
4 6 (12.24%) Senior DevOps Engineer
5 5 (10.20%) DevOps Architect
5 5 (10.20%) Junior
6 4 (8.16%) Administrator
6 4 (8.16%) Junior Developer
6 4 (8.16%) Junior Java Developer
6 4 (8.16%) Mid-Level Java Developer
6 4 (8.16%) Systems Administrator
7 3 (6.12%) Analyst
7 3 (6.12%) AWS DevOps
7 3 (6.12%) AWS Engineer
7 3 (6.12%) Operations Engineer
Libraries, Frameworks & Software Standards
1 5 (10.20%) Boost C++ Libraries
2 4 (8.16%) Web Services
3 3 (6.12%) Sensu
4 2 (4.08%) LAMP
4 2 (4.08%) REST
4 2 (4.08%) SOAP
5 1 (2.04%) .NET
5 1 (2.04%) CSS
5 1 (2.04%) FIX Protocol
5 1 (2.04%) GWT
5 1 (2.04%) HTML
5 1 (2.04%) HTML5
Miscellaneous
1 9 (18.37%) Visualisation
2 8 (16.33%) Hedge funds
3 7 (14.29%) Computer Science
4 3 (6.12%) Data Centre
5 2 (4.08%) Hybrid Cloud
6 1 (2.04%) PKI
6 1 (2.04%) Wiki
Operating Systems
1 49 (100.00%) Linux
2 30 (61.22%) Red Hat Enterprise Linux
3 24 (48.98%) Windows
4 11 (22.45%) Unix
5 10 (20.41%) Windows Server 2012
6 9 (18.37%) Ubuntu
6 9 (18.37%) Windows Server
6 9 (18.37%) Windows Server 2008
7 2 (4.08%) Debian
7 2 (4.08%) Windows 7
8 1 (2.04%) FreeBSD
8 1 (2.04%) Windows 10
8 1 (2.04%) Windows 8
8 1 (2.04%) Windows Server 2003
Processes & Methodologies
1 32 (65.31%) DevOps
2 24 (48.98%) Configuration Management
3 15 (30.61%) Continuous Integration
4 11 (22.45%) Continuous Deployment
5 8 (16.33%) Systematic Trading
6 7 (14.29%) SDLC
6 7 (14.29%) Service Design
7 6 (12.24%) Build Automation
8 5 (10.20%) E-Commerce
8 5 (10.20%) Network Management
9 4 (8.16%) Agile Software Development
9 4 (8.16%) Load Balancing
9 4 (8.16%) Open Source
9 4 (8.16%) Release Management
10 3 (6.12%) Continuous Delivery
11 2 (4.08%) Data Ingestion
11 2 (4.08%) Information Governance
11 2 (4.08%) Kanban
11 2 (4.08%) Server Hardening
11 2 (4.08%) Time Management
Programming Languages
1 22 (44.90%) Python
2 19 (38.78%) Java
3 14 (28.57%) Bash Shell
4 11 (22.45%) SQL
5 9 (18.37%) Ruby
6 8 (16.33%) JavaScript
7 7 (14.29%) AWK
7 7 (14.29%) Perl
8 6 (12.24%) Shell Script
9 5 (10.20%) C++
9 5 (10.20%) PowerShell
10 4 (8.16%) PHP
11 2 (4.08%) PL/SQL
12 1 (2.04%) C
12 1 (2.04%) Go
12 1 (2.04%) PHP 5
12 1 (2.04%) T-SQL
Qualifications
1 4 (8.16%) Degree
2 1 (2.04%) AWS Certification
2 1 (2.04%) CCNP
2 1 (2.04%) Cisco Certification
System Software
1 12 (24.49%) Docker
2 6 (12.24%) VMware Infrastructure
3 3 (6.12%) Active Directory
3 3 (6.12%) Virtual Machines
4 2 (4.08%) XenServer
5 1 (2.04%) Hyper-V
5 1 (2.04%) KVM
5 1 (2.04%) oVirt
5 1 (2.04%) Postfix
5 1 (2.04%) Xen
Systems Management
1 27 (55.10%) Puppet
2 21 (42.86%) Ansible
3 20 (40.82%) Opscode Chef
4 7 (14.29%) Oracle ZFS
5 4 (8.16%) Nagios
6 3 (6.12%) Graphite
6 3 (6.12%) Kubernetes
7 2 (4.08%) Terraform
8 1 (2.04%) Cisco CUCM
8 1 (2.04%) Munin
8 1 (2.04%) SCOM
Vendors
1 29 (59.18%) Red Hat
2 7 (14.29%) Atlassian
2 7 (14.29%) Microsoft
2 7 (14.29%) VMware
3 5 (10.20%) Cisco
4 3 (6.12%) Citrix
4 3 (6.12%) IBM
4 3 (6.12%) Oracle
5 1 (2.04%) Aerohive Networks
5 1 (2.04%) Avaya
5 1 (2.04%) CheckPoint
5 1 (2.04%) CODA
5 1 (2.04%) Cognos
5 1 (2.04%) Draytek
5 1 (2.04%) Fortinet
5 1 (2.04%) Google
5 1 (2.04%) HP
5 1 (2.04%) Juniper
5 1 (2.04%) Kaseya
5 1 (2.04%) SonicWALL
City, London
ANSON MCCADE
Salary: £40,000 - £60,000
Posted: 8 hours ago
City, London
ANSON MCCADE
Salary: £40,000 - £60,000
Posted: 7 hours ago
City, London
Miller Maxwell Ltd
Salary: From £35,000 to £45,000 per annum + Bonus & benefits
Posted: 5 hours ago
City, London
Senitor Associates
Salary: £40000 - £50000 per annum + great company
Posted: Yesterday
City, London
Senitor Associates
Salary: £50000 - £70000 per annum + great company
Posted: Yesterday
City, London
Harris Global
Salary: From £70,000 to £80,000 per annum + unrivaled benefits
Posted: 2 days ago