Period
to 18 November 2017

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 6 months to 18 November 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.

CentOS Linux
England > South East
6 months to
18 Nov 2017
Same period 2016 Same period 2015
Rank 292 275 319
Rank change year-on-year -17 +44 -6
Contract jobs citing CentOS 79 110 79
As % of all contract IT jobs advertised in the South East 0.47% 0.66% 0.40%
As % of the Operating Systems category 2.07% 2.84% 1.65%
Number of daily rates quoted 63 86 48
South East median daily rate £405 £438 £401
Median daily rate % change year-on-year -7.43% +9.03% -0.31%
10th Percentile £311 £330 £271
90th Percentile £575 £500 £491
England median daily rate £458 £463 £425
% change year-on-year -1.03% +8.82% +6.25%
Number of hourly rates quoted 3 2 0
South East median hourly rate £18.00 £36.50 -
Median hourly rate % change year-on-year -50.68% - -
England median hourly rate £32.88 £14.75 £38.00
% change year-on-year +122.88% -61.18% +125.19%

CentOS is in the Operating Systems category. The following 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.

All Operating Systems
South East
Contract vacancies with a requirement for operating system skills 3818 3876 4797
As % of all contract IT jobs advertised in the South East 22.87% 23.16% 24.54%
Number of daily rates quoted 2128 2256 2632
South East median daily rate £400 £375 £363
Median daily rate % change year-on-year +6.67% +3.45% +6.62%
10th Percentile £150 £186 £206
90th Percentile £550 £538 £494
England median daily rate £425 £410 £400
% change year-on-year +3.66% +2.50% +6.67%
Number of hourly rates quoted 298 269 468
South East median hourly rate £17.77 £17.06 £18.43
Median hourly rate % change year-on-year +4.16% -7.42% +18.89%
10th Percentile £11.25 £11.00 £11.25
90th Percentile £50.25 £48.89 £47.83
England median hourly rate £17.50 £16.50 £16.50
% change year-on-year +6.06% - +6.45%

CentOS
Job Vacancy Trend in the South East

Job postings citing CentOS as a percentage of all IT jobs advertised in the South East.

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 6 months to 18 November 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 contractor hourly rates quoted in IT 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 6 months to 18 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Thames Valley -31 25 £400 -13.51% 8
Surrey -19 23 £475 +8.57% 1
Hampshire +5 20 £405 +12.50% 4
Berkshire +3 18 £375 -18.92% 3
Oxfordshire -3 7 £400 -5.88% 5
West Sussex - 7 £383 -
Middlesex +11 4 £345 -
Buckinghamshire -40 1 £300 -40.00%
CentOS
England

For the 6 months to 18 November 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 79 (100.00%) Linux
2 49 (62.03%) Red Hat Enterprise Linux
3 40 (50.63%) DevOps
4 33 (41.77%) Red Hat
5 30 (37.97%) Puppet
6 27 (34.18%) Amazon AWS
6 27 (34.18%) Ansible
6 27 (34.18%) Python
7 25 (31.65%) DNS
7 25 (31.65%) Configuration Management
7 25 (31.65%) Ubuntu
8 24 (30.38%) Perl
9 23 (29.11%) MySQL
9 23 (29.11%) VMware
10 22 (27.85%) Opscode Chef
11 20 (25.32%) Jenkins
12 19 (24.05%) Java
13 18 (22.78%) Firewall
14 17 (21.52%) Load Balancing
15 16 (20.25%) Git (software)
15 16 (20.25%) Internet
16 15 (18.99%) Oracle
16 15 (18.99%) Docker
17 14 (17.72%) SSL
18 13 (16.46%) Bash Shell
19 12 (15.19%) MongoDB
19 12 (15.19%) Continuous Integration
19 12 (15.19%) OpenStack
19 12 (15.19%) LAMP
19 12 (15.19%) Apache

CentOS
Co-occurring 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 12 (15.19%) Apache
1 12 (15.19%) OpenStack
2 7 (8.86%) Confluence
2 7 (8.86%) Tomcat
3 6 (7.59%) WebSphere
4 3 (3.80%) nginx
5 2 (2.53%) Cloud Foundry
5 2 (2.53%) IBM Domino
5 2 (2.53%) IIS
5 2 (2.53%) MS Exchange
6 1 (1.27%) JBoss
Cloud Services
1 27 (34.18%) Amazon AWS
2 10 (12.66%) AWS CloudFormation
3 8 (10.13%) Cloud Computing
3 8 (10.13%) Microsoft Azure
4 7 (8.86%) AWS Lambda
4 7 (8.86%) Serverless
5 3 (3.80%) Amazon EC2
5 3 (3.80%) Amazon S3
6 2 (2.53%) Amazon CloudWatch
6 2 (2.53%) IaaS
6 2 (2.53%) PaaS
6 2 (2.53%) SaaS
7 1 (1.27%) Amazon Glacier
7 1 (1.27%) Azure Active Directory
7 1 (1.27%) GitHub
7 1 (1.27%) Google Cloud Platform
7 1 (1.27%) IBM Cloud
7 1 (1.27%) OpenShift
7 1 (1.27%) Route 53
7 1 (1.27%) Virtual Private Cloud
Communications & Networking
1 25 (31.65%) DNS
2 18 (22.78%) Firewall
3 16 (20.25%) Internet
4 14 (17.72%) SSL
5 12 (15.19%) DHCP
6 11 (13.92%) NetScaler
6 11 (13.92%) VPN
7 10 (12.66%) Network Security
8 9 (11.39%) Wireless
9 7 (8.86%) Fibre Channel
10 5 (6.33%) LAN
10 5 (6.33%) SAN
10 5 (6.33%) WAN
11 4 (5.06%) TCP/IP
11 4 (5.06%) VLAN
12 3 (3.80%) HTTP
12 3 (3.80%) HTTPS
12 3 (3.80%) Software-Defined Networking
13 2 (2.53%) Kerberos
13 2 (2.53%) SMTP
Database & Business Intelligence
1 23 (29.11%) MySQL
2 12 (15.19%) MongoDB
3 8 (10.13%) Amazon DynamoDB
4 6 (7.59%) BusinessObjects
5 4 (5.06%) Apache Cassandra
6 2 (2.53%) Redis
7 1 (1.27%) Amazon RDS
7 1 (1.27%) Azure SQL Database
7 1 (1.27%) Couchbase
Development Applications
1 20 (25.32%) Jenkins
2 16 (20.25%) Git (software)
3 7 (8.86%) Bitbucket
3 7 (8.86%) JIRA
3 7 (8.86%) Vagrant
4 3 (3.80%) GitLab
5 2 (2.53%) Selenium
6 1 (1.27%) Hudson
6 1 (1.27%) Subversion
General
1 6 (7.59%) Telecoms
2 3 (3.80%) Manufacturing
3 1 (1.27%) Advertising
3 1 (1.27%) Aerospace
3 1 (1.27%) Games
Job Titles
1 26 (32.91%) DevOps Engineer
2 21 (26.58%) Linux Engineer
3 19 (24.05%) Administrator
4 16 (20.25%) Linux/Unix DevOps
4 16 (20.25%) Systems Administrator
5 14 (17.72%) Systems Engineer
6 13 (16.46%) Linux Administrator
6 13 (16.46%) Linux DevOps Engineer
7 12 (15.19%) Network Engineer
8 11 (13.92%) Linux Systems Engineer
9 10 (12.66%) Linux Systems Administrator
10 7 (8.86%) Senior Systems Engineer
10 7 (8.86%) Unix Administrator
11 6 (7.59%) DevOps Administrator
11 6 (7.59%) Senior Linux Engineer
12 5 (6.33%) Infrastructure Engineer
12 5 (6.33%) Senior Linux Systems Engineer
13 4 (5.06%) DevOps Systems Engineer
13 4 (5.06%) Linux DevOps Administrator
13 4 (5.06%) Senior DevOps
Libraries, Frameworks & Software Standards
1 12 (15.19%) LAMP
2 11 (13.92%) Regular Expression
3 8 (10.13%) Sensu
4 4 (5.06%) Elastic Stack
4 4 (5.06%) Web Services
5 3 (3.80%) MCollective
5 3 (3.80%) RESTful
6 2 (2.53%) Hibernate
6 2 (2.53%) RabbitMQ
6 2 (2.53%) Spring
7 1 (1.27%) .NET
7 1 (1.27%) boto
7 1 (1.27%) JSON
7 1 (1.27%) Node.js
7 1 (1.27%) POSIX
Miscellaneous
1 7 (8.86%) Computer Science
2 6 (7.59%) Private Cloud
3 5 (6.33%) Data Centre
4 4 (5.06%) Video on Demand
5 3 (3.80%) Management Information System
6 2 (2.53%) EMC VNX
6 2 (2.53%) Hybrid Cloud
6 2 (2.53%) Public Cloud
7 1 (1.27%) Device Driver
7 1 (1.27%) Enterprise Cloud
7 1 (1.27%) Life Science
7 1 (1.27%) Linux Command Line
7 1 (1.27%) Replication
7 1 (1.27%) VxBlock/Vblock
Operating Systems
1 79 (100.00%) Linux
2 49 (62.03%) Red Hat Enterprise Linux
3 25 (31.65%) Ubuntu
4 11 (13.92%) Unix
5 9 (11.39%) Solaris
5 9 (11.39%) Windows
6 6 (7.59%) Debian
7 2 (2.53%) Mac OS
7 2 (2.53%) SUSE
7 2 (2.53%) Windows Server
7 2 (2.53%) Windows Server 2003
7 2 (2.53%) Windows Server 2008
7 2 (2.53%) Windows Server 2012
8 1 (1.27%) Amazon Linux
Processes & Methodologies
1 40 (50.63%) DevOps
2 25 (31.65%) Configuration Management
3 17 (21.52%) Load Balancing
4 12 (15.19%) Continuous Integration
5 11 (13.92%) Email Filtering
5 11 (13.92%) Kalman Filter
5 11 (13.92%) Vulnerability Scanning
6 10 (12.66%) Agile Software Development
6 10 (12.66%) ITIL
6 10 (12.66%) Open Source
7 7 (8.86%) Application Performance Management
7 7 (8.86%) Continuous Delivery
7 7 (8.86%) Mathematics
7 7 (8.86%) Performance Management
7 7 (8.86%) Task Automation
8 6 (7.59%) Change Management
8 6 (7.59%) Customer Requirements
9 5 (6.33%) ITIL V3
10 4 (5.06%) Continuous Improvement
10 4 (5.06%) Kanban
Programming Languages
1 27 (34.18%) Python
2 24 (30.38%) Perl
3 19 (24.05%) Java
4 13 (16.46%) Bash Shell
5 8 (10.13%) AWK
6 7 (8.86%) Bourne shell
6 7 (8.86%) Korn
6 7 (8.86%) PHP
6 7 (8.86%) PowerShell
6 7 (8.86%) Ruby
6 7 (8.86%) Shell Script
6 7 (8.86%) SQL
7 6 (7.59%) JavaScript
8 4 (5.06%) C
9 3 (3.80%) C++
10 1 (1.27%) sed
Qualifications
1 7 (8.86%) Degree
1 7 (8.86%) OCA
1 7 (8.86%) OCP
1 7 (8.86%) Oracle Certification
1 7 (8.86%) RHCE
1 7 (8.86%) RHCSA
2 3 (3.80%) SC Cleared
2 3 (3.80%) Security Cleared
3 2 (2.53%) CCNA
3 2 (2.53%) Cisco Certification
4 1 (1.27%) CCIE
4 1 (1.27%) CCNP
4 1 (1.27%) ISTQB
Quality Assurance & Compliance
1 4 (5.06%) QA
2 1 (1.27%) PMO
System Software
1 15 (18.99%) Docker
2 10 (12.66%) VMware ESXi
3 9 (11.39%) KVM
4 8 (10.13%) VMware Infrastructure
5 7 (8.86%) GlusterFS
5 7 (8.86%) Veritas Cluster Server
6 5 (6.33%) Xen
7 4 (5.06%) Virtual Machines
8 3 (3.80%) Active Directory
9 2 (2.53%) Hyper-V
9 2 (2.53%) iptables
9 2 (2.53%) vCloud
10 1 (1.27%) LXC
10 1 (1.27%) NFS
10 1 (1.27%) Samba
10 1 (1.27%) Snort
10 1 (1.27%) VMware NSX
10 1 (1.27%) vSphere
Systems Management
1 30 (37.97%) Puppet
2 27 (34.18%) Ansible
3 22 (27.85%) Opscode Chef
4 11 (13.92%) Nagios
5 9 (11.39%) Red Hat Satellite
5 9 (11.39%) Red Hat Spacewalk
6 7 (8.86%) logstash
6 7 (8.86%) NetBackup
6 7 (8.86%) Oracle ZFS
6 7 (8.86%) Terraform
6 7 (8.86%) Veritas Storage Foundation
7 6 (7.59%) CFEngine
7 6 (7.59%) Pingdom
8 5 (6.33%) SELinux
8 5 (6.33%) vCenter Server
9 4 (5.06%) Consul
9 4 (5.06%) Grafana
9 4 (5.06%) HAProxy
9 4 (5.06%) Kubernetes
9 4 (5.06%) ZABBIX
Vendors
1 33 (41.77%) Red Hat
2 23 (29.11%) VMware
3 15 (18.99%) Oracle
4 11 (13.92%) Cisco
4 11 (13.92%) Citrix
4 11 (13.92%) EMC
4 11 (13.92%) HP
5 10 (12.66%) Dell
5 10 (12.66%) Sun
6 8 (10.13%) Brocade
6 8 (10.13%) CheckPoint
6 8 (10.13%) Extreme Networks
6 8 (10.13%) Splunk
7 7 (8.86%) AppDynamics
7 7 (8.86%) Atlassian
7 7 (8.86%) StorageTek
7 7 (8.86%) Veritas
8 6 (7.59%) PagerDuty
9 4 (5.06%) 3PAR
9 4 (5.06%) SaltStack