The following table provides summary statistics for contract job vacancies advertised in the South East with a requirement for CentOS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CentOS over the 3 months to 24 March 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

3 months to
24 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
England / South East
Rank 196 215 224
Rank change year-on-year +19 +9  
Contract jobs citing CentOS 45 53 40
As % of all contract IT jobs advertised in the South East 0.57% 0.58% 0.41%
As % of the Operating Systems category 2.62% 2.29% 1.72%
Number of daily rates quoted 34 38 27
Median daily rate £475 £425 £375
Median daily rate % change year-on-year +11.76% +13.33%  
90% offered a daily rate of more than £400 £336 £239
10% offered a daily rate of more than £600 £500 £456
UK excluding London median daily rate £475 £425 £350
% change year-on-year +11.76% +21.42%  
Number of hourly rates quoted 0 0 1
Median hourly rate - - £47.50
UK excluding London median hourly rate £17.50 £8.50 £47.50
% change year-on-year +105.88% -82.10%  

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

Contract Operating System Skills
South East
Contract job vacancies with a requirement for operating system skills 1719 2311 2322
As % of all contract IT job vacancies advertised in the South East 21.89% 25.12% 23.82%
Number of daily rates quoted 997 1409 1145
Median daily rate £400 £363 £350
Median daily rate % change year-on-year +10.34% +3.57%  
90% offered a daily rate of more than £206 £185 £204
10% offered a daily rate of more than £525 £500 £475
UK excluding London median daily rate £388 £363 £338
% change year-on-year +6.89% +7.40%  
Number of hourly rates quoted 122 159 213
Median hourly rate £14.75 £19.00 £16.50
Median hourly rate % change year-on-year -22.36% +15.15%  
90% offered a hourly rate of more than £12.00 £13.31 £11.75
10% offered a hourly rate of more than £39.02 £50.00 £40.00
UK excluding London median hourly rate £15.25 £16.50 £15.50
% change year-on-year -7.57% +6.45%  

CentOS
Job Vacancy Trend in the South East

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

Job vacancy trend for CentOS in the South East

CentOS
Contractor Daily Rate Trend in the South East

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing CentOS in the South East.

Contractor daily rate trend for CentOS in the South East

CentOS
Contractor Daily Rate Histogram in the South East

The daily rate distribution of IT jobs citing CentOS in the South East over the 3 months to 24 March 2017.

Contractor daily rate histogram for CentOS in the South East

CentOS
Contractor Hourly Rate Trend in the South East

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing CentOS in the South East.

Contractor hourly rate trend for CentOS in the South East

CentOS
Contract Job Locations in the South East

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the South East region over the 3 months to 24 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
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Berkshire +26 21 £500 - 10
Hampshire +13 12 £451 +31.75% 12
Oxfordshire - 4 £400 - 2
Surrey +2 3 £400 +17.64% 1
East Sussex +6 2 - -
Kent - 2 £401 -
Buckinghamshire -13 1 £425 -
CentOS
England

CentOS
Top 30 Related IT Skills in the South East

For the 6 months to 24 March 2017, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the South East region with a requirement for CentOS.

1 119 (100.00%) Linux
2 65 (54.62%) Red Hat
3 62 (52.10%) Red Hat Enterprise Linux
4 54 (45.38%) DevOps
5 53 (44.54%) Puppet
6 50 (42.02%) Python
7 47 (39.50%) Ubuntu
8 46 (38.66%) VMware
8 46 (38.66%) Ansible
9 45 (37.82%) Security Cleared
10 42 (35.29%) SC Cleared
11 40 (33.61%) VMware Infrastructure
12 37 (31.09%) Bash Shell
13 34 (28.57%) Opscode Chef
14 33 (27.73%) Git (software)
15 32 (26.89%) Debian
15 32 (26.89%) Java
16 30 (25.21%) TCP/IP
16 30 (25.21%) Jenkins
17 29 (24.37%) Unix
17 29 (24.37%) Windows
18 26 (21.85%) Docker
19 24 (20.17%) HTTP
20 23 (19.33%) Hadoop
20 23 (19.33%) SELinux
21 22 (18.49%) vCloud
21 22 (18.49%) Cisco
22 21 (17.65%) JavaScript
22 21 (17.65%) SSH
23 19 (15.97%) Data Centre

CentOS
Top Related IT Skills in the South East 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 11 (9.24%) Apache
2 7 (5.88%) OpenStack
3 6 (5.04%) Confluence
4 5 (4.20%) Tomcat
5 4 (3.36%) JBoss
5 4 (3.36%) WebSphere
6 3 (2.52%) nginx
7 2 (1.68%) IIS
7 2 (1.68%) Jetty
8 1 (0.84%) Apache Qpid
8 1 (0.84%) GlassFish
8 1 (0.84%) SAS
8 1 (0.84%) SharePoint
Applications
1 5 (4.20%) MS Office
2 3 (2.52%) MS Excel
Business Applications
1 4 (3.36%) Infor M3
2 1 (0.84%) SAP Oil and Gas
Cloud Services
1 11 (9.24%) Amazon AWS
2 10 (8.40%) GitHub
3 7 (5.88%) AWS CloudFormation
4 4 (3.36%) AWS Lambda
4 4 (3.36%) IaaS
4 4 (3.36%) Microsoft Azure
5 2 (1.68%) IBM PureFlex
6 1 (0.84%) Amazon CloudWatch
6 1 (0.84%) Amazon EC2
6 1 (0.84%) Amazon Glacier
6 1 (0.84%) Amazon S3
6 1 (0.84%) Route 53
6 1 (0.84%) Virtual Private Cloud
Communications & Networking
1 30 (25.21%) TCP/IP
2 24 (20.17%) HTTP
3 21 (17.65%) SSH
4 16 (13.45%) ICMP
4 16 (13.45%) SAN
4 16 (13.45%) VPN
5 13 (10.92%) IPsec
5 13 (10.92%) SSL
6 11 (9.24%) Cisco Nexus
6 11 (9.24%) Firewall
7 9 (7.56%) DNS
8 7 (5.88%) LDAP
9 6 (5.04%) SMTP
10 5 (4.20%) FTP
11 4 (3.36%) DVB
11 4 (3.36%) LAN
11 4 (3.36%) WAN
12 3 (2.52%) DHCP
12 3 (2.52%) Internet
13 2 (1.68%) Wireless
Database & Business Intelligence
1 23 (19.33%) Hadoop
2 9 (7.56%) Big Data
3 7 (5.88%) MySQL
4 5 (4.20%) NoSQL
5 4 (3.36%) Amazon DynamoDB
5 4 (3.36%) PostgreSQL
6 2 (1.68%) MongoDB
6 2 (1.68%) RDBMS
6 2 (1.68%) Relational Database
7 1 (0.84%) Amazon RDS
7 1 (0.84%) Apache Cassandra
7 1 (0.84%) Geospatial Data
7 1 (0.84%) Oracle Database
7 1 (0.84%) SQL Server
Development Applications
1 33 (27.73%) Git (software)
2 30 (25.21%) Jenkins
3 14 (11.76%) Hudson
4 10 (8.40%) Subversion
5 7 (5.88%) Vagrant
6 6 (5.04%) JIRA
7 5 (4.20%) Bitbucket
8 2 (1.68%) Eclipse
8 2 (1.68%) Metasploit
8 2 (1.68%) TeamCity
8 2 (1.68%) Visual Studio
9 1 (0.84%) CMake
9 1 (0.84%) GoogleTest
9 1 (0.84%) Valgrind
General
1 4 (3.36%) Telecoms
2 3 (2.52%) Retail
3 2 (1.68%) Manufacturing
4 1 (0.84%) Electronics
4 1 (0.84%) Finance
4 1 (0.84%) Marketing
Job Titles
1 29 (24.37%) Administrator
2 26 (21.85%) Systems Administrator
3 24 (20.17%) Linux Administrator
4 23 (19.33%) Linux Systems Administrator
5 22 (18.49%) Developer
5 22 (18.49%) DevOps Engineer
6 19 (15.97%) Linux Engineer
7 17 (14.29%) Linux/Unix DevOps
8 12 (10.08%) Consultant
8 12 (10.08%) DevOps Administrator
9 11 (9.24%) Python Developer
10 10 (8.40%) Java Developer
10 10 (8.40%) JavaScript Developer
11 9 (7.56%) DevOps Consultant
11 9 (7.56%) Java Consultant
11 9 (7.56%) Java Engineer
11 9 (7.56%) JavaScript Engineer
11 9 (7.56%) Linux DevOps Administrator
12 8 (6.72%) AWS DevOps
12 8 (6.72%) VMWare Administrator
Libraries, Frameworks & Software Standards
1 4 (3.36%) HTML
1 4 (3.36%) HTML5
1 4 (3.36%) Node.js
1 4 (3.36%) REST
2 3 (2.52%) CGI
2 3 (2.52%) LAMP
3 2 (1.68%) .NET
3 2 (1.68%) XML
4 1 (0.84%) JSF
4 1 (0.84%) LEMP Stack
4 1 (0.84%) Middleware
4 1 (0.84%) Oracle Fusion
4 1 (0.84%) POSIX
4 1 (0.84%) PostGIS
4 1 (0.84%) RESTful
4 1 (0.84%) SAML
4 1 (0.84%) STL
4 1 (0.84%) Web Services
4 1 (0.84%) X-Windows
Miscellaneous
1 19 (15.97%) Data Centre
2 17 (14.29%) Linux Command Line
3 6 (5.04%) Clustering
4 4 (3.36%) Computer Science
4 4 (3.36%) Digital TV
4 4 (3.36%) Management Information System
4 4 (3.36%) MPEG
4 4 (3.36%) Private Cloud
4 4 (3.36%) STB
5 2 (1.68%) PKI
5 2 (1.68%) VxBlock/Vblock
6 1 (0.84%) Algorithms
6 1 (0.84%) Client/Server
6 1 (0.84%) Embedded Systems
6 1 (0.84%) Fat Client
6 1 (0.84%) IBM XIV
6 1 (0.84%) Thin Client
Operating Systems
1 119 (100.00%) Linux
2 62 (52.10%) Red Hat Enterprise Linux
3 47 (39.50%) Ubuntu
4 32 (26.89%) Debian
5 29 (24.37%) Unix
5 29 (24.37%) Windows
6 4 (3.36%) Windows Server 2008
7 3 (2.52%) AIX
7 3 (2.52%) Solaris
7 3 (2.52%) Windows Server
8 2 (1.68%) Oracle Linux
8 2 (1.68%) Windows Server 2003
8 2 (1.68%) Windows Server 2012
9 1 (0.84%) HPUX
9 1 (0.84%) Mac OS
9 1 (0.84%) SUSE
Processes & Methodologies
1 54 (45.38%) DevOps
2 18 (15.13%) Prototyping
3 15 (12.61%) ITIL
4 12 (10.08%) Open Source
5 8 (6.72%) Configuration Management
5 8 (6.72%) Data Management
5 8 (6.72%) ITIL V2
6 7 (5.88%) Capacity Management
6 7 (5.88%) Performance Tuning
7 6 (5.04%) Agile Software Development
7 6 (5.04%) Coaching
7 6 (5.04%) Continuous Improvement
7 6 (5.04%) Continuous Integration
7 6 (5.04%) Open Source Development
7 6 (5.04%) Service Management
8 5 (4.20%) Automated Testing
8 5 (4.20%) Ethical Hacking
8 5 (4.20%) Performance Management
8 5 (4.20%) Scrum
9 4 (3.36%) SOA
Programming Languages
1 50 (42.02%) Python
2 37 (31.09%) Bash Shell
3 32 (26.89%) Java
4 21 (17.65%) JavaScript
5 17 (14.29%) Perl
6 13 (10.92%) Ruby
7 9 (7.56%) SQL
8 8 (6.72%) C
9 7 (5.88%) PowerShell
10 6 (5.04%) C++
11 5 (4.20%) PHP
12 3 (2.52%) Shell Script
13 2 (1.68%) AWK
13 2 (1.68%) C#
14 1 (0.84%) Go
14 1 (0.84%) Korn
14 1 (0.84%) Rust
14 1 (0.84%) sed
Qualifications
1 45 (37.82%) Security Cleared
2 42 (35.29%) SC Cleared
3 15 (12.61%) Degree
4 8 (6.72%) CCNA
4 8 (6.72%) CCNP
4 8 (6.72%) Cisco Certification
4 8 (6.72%) VMware Certified Professional (VCP)
5 4 (3.36%) AWS Certification
5 4 (3.36%) CEH
5 4 (3.36%) DV Cleared
5 4 (3.36%) RHCT
6 2 (1.68%) CISA
7 1 (0.84%) SANS
Quality Assurance & Compliance
1 4 (3.36%) PCI DSS
2 2 (1.68%) JSP 440
3 1 (0.84%) ISO/IEC 27001
System Software
1 40 (33.61%) VMware Infrastructure
2 26 (21.85%) Docker
3 22 (18.49%) vCloud
4 17 (14.29%) vSphere
5 12 (10.08%) Virtual Machines
6 8 (6.72%) Active Directory
7 3 (2.52%) VMware ESXi
7 3 (2.52%) Xen
8 2 (1.68%) iptables
8 2 (1.68%) KVM
8 2 (1.68%) PowerHA
8 2 (1.68%) XenDesktop
9 1 (0.84%) Ceph
9 1 (0.84%) Dovecot
9 1 (0.84%) GFS2
9 1 (0.84%) OCFS2
9 1 (0.84%) Oracle RAC
9 1 (0.84%) Sendmail
9 1 (0.84%) Shibboleth
9 1 (0.84%) VirtualBox
Systems Management
1 53 (44.54%) Puppet
2 46 (38.66%) Ansible
3 34 (28.57%) Opscode Chef
4 23 (19.33%) SELinux
5 11 (9.24%) Nagios
5 11 (9.24%) Terraform
6 10 (8.40%) SCCM
7 9 (7.56%) vRealize
8 5 (4.20%) Pingdom
9 4 (3.36%) HAProxy
10 3 (2.52%) Consul
10 3 (2.52%) SCOM
11 2 (1.68%) Packer
11 2 (1.68%) WSUS
12 1 (0.84%) Cacti
12 1 (0.84%) Cobbler
12 1 (0.84%) Kubernetes
12 1 (0.84%) Nessus
12 1 (0.84%) Oracle ZFS
12 1 (0.84%) RANCID
Vendors
1 65 (54.62%) Red Hat
2 46 (38.66%) VMware
3 22 (18.49%) Cisco
4 16 (13.45%) Microsoft
5 8 (6.72%) EMC
6 6 (5.04%) AppDynamics
6 6 (5.04%) Oracle
6 6 (5.04%) SaltStack
7 5 (4.20%) Atlassian
7 5 (4.20%) PagerDuty
8 3 (2.52%) IBM
9 2 (1.68%) Citrix
9 2 (1.68%) HP
9 2 (1.68%) Nimsoft
9 2 (1.68%) Veritas
10 1 (0.84%) F5
10 1 (0.84%) Gemalto
10 1 (0.84%) Google
10 1 (0.84%) Qualys
10 1 (0.84%) Sourcefire
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