Period
to 21 July 2018

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 21 July 2018 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
21 Jul 2018
Same period 2017 Same period 2016
Rank 289 239 293
Rank change year-on-year -50 +54 +32
Contract jobs citing CentOS 89 124 105
As % of all contract IT jobs advertised in the South East 0.52% 0.77% 0.56%
As % of the Operating Systems category 2.36% 3.52% 2.28%
Number of daily rates quoted 63 84 86
South East median daily rate £475 £475 £425
Median daily rate % change year-on-year - +11.76% +13.33%
10th Percentile £355 £340 £288
90th Percentile £590 £613 £500
England median daily rate £500 £495 £450
% change year-on-year +0.99% +10.02% +12.50%
Number of hourly rates quoted 3 0 2
South East median hourly rate £49.50 - £55.00
10th Percentile £22.95 - £52.50
90th Percentile £58.05 - £57.50
England median hourly rate £49.50 £37.50 £13.50
% change year-on-year +32.00% +177.78% -

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 3,773 3,525 4,607
As % of all contract IT jobs advertised in the South East 21.97% 21.77% 24.71%
Number of daily rates quoted 2,041 1,977 2,775
South East median daily rate £420 £400 £375
Median daily rate % change year-on-year +5.00% +6.67% +3.67%
10th Percentile £168 £198 £191
90th Percentile £556 £538 £525
England median daily rate £438 £425 £400
% change year-on-year +2.94% +6.25% +6.67%
Number of hourly rates quoted 325 273 304
South East median hourly rate £18.11 £15.50 £19.50
Median hourly rate % change year-on-year +16.84% -20.51% +18.18%
10th Percentile £11.17 £10.75 £11.33
90th Percentile £51.00 £47.50 £48.68
England median hourly rate £17.50 £16.75 £16.50
% change year-on-year +4.48% +1.52% +2.10%

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 21 July 2018.

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
Contractor Hourly Rate Histogram in the South East

The hourly rate distribution of IT jobs citing CentOS in the South East over the 6 months to 21 July 2018.

Contractor hourly rate histogram 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 21 July 2018. 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 -26 41 £475 -2.56% 32
Berkshire -9 30 £525 - 18
Surrey -25 18 £500 -4.76% 6
Hampshire -30 16 £468 -3.11% 4
Oxfordshire -2 10 £400 - 9
West Sussex +6 9 £366 -4.25%
Middlesex - 2 £431 -
Buckinghamshire -1 1 £412 +26.77% 5
CentOS
England

For the 6 months to 21 July 2018, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the South East region with a requirement for CentOS.

1 89 (100.00%) Linux
2 44 (49.44%) Python
3 42 (47.19%) DevOps
4 36 (40.45%) Red Hat Enterprise Linux
4 36 (40.45%) Puppet
5 33 (37.08%) Jenkins
5 33 (37.08%) Ansible
6 32 (35.96%) Red Hat
7 29 (32.58%) Amazon AWS
8 28 (31.46%) Bash Shell
9 27 (30.34%) Configuration Management
9 27 (30.34%) VMware
10 24 (26.97%) Unix
10 24 (26.97%) Perl
10 24 (26.97%) Docker
11 21 (23.60%) Open Source
12 19 (21.35%) Git (software)
12 19 (21.35%) Ubuntu
12 19 (21.35%) Oracle
12 19 (21.35%) Windows
12 19 (21.35%) PostgreSQL
13 18 (20.22%) Security Cleared
13 18 (20.22%) VMware Infrastructure
13 18 (20.22%) Opscode Chef
14 16 (17.98%) Shell Script
15 15 (16.85%) Java
15 15 (16.85%) DNS
15 15 (16.85%) SC Cleared
15 15 (16.85%) Agile Software Development
15 15 (16.85%) Ruby

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 (13.48%) Apache
2 9 (10.11%) nginx
3 7 (7.87%) Elasticsearch
3 7 (7.87%) OpenStack
4 6 (6.74%) Confluence
5 5 (5.62%) lighttpd
6 4 (4.49%) Apache Spark
7 1 (1.12%) Apache Pig
7 1 (1.12%) ColdFusion
7 1 (1.12%) Ethereum
7 1 (1.12%) Hyperledger
7 1 (1.12%) Tomcat
7 1 (1.12%) WebLogic
Business Applications
1 1 (1.12%) Distributed Ledger
1 1 (1.12%) Towers Watson Igloo
Cloud Services
1 29 (32.58%) Amazon AWS
2 12 (13.48%) Microsoft Azure
3 8 (8.99%) AWS CloudFormation
4 6 (6.74%) GitHub
4 6 (6.74%) Google Cloud Platform
5 4 (4.49%) Google Tag Manager
6 2 (2.25%) AWS Lambda
6 2 (2.25%) Cloud Computing
6 2 (2.25%) CloudBees
6 2 (2.25%) Serverless
7 1 (1.12%) Amazon CloudWatch
7 1 (1.12%) Datadog
7 1 (1.12%) IaaS
7 1 (1.12%) OpenShift
Communications & Networking
1 15 (16.85%) DNS
2 11 (12.36%) TCP/IP
3 9 (10.11%) Firewall
4 7 (7.87%) Fibre Channel
4 7 (7.87%) HTTP
4 7 (7.87%) SAN
5 6 (6.74%) SSL
6 5 (5.62%) DHCP
7 4 (4.49%) HTTPS
7 4 (4.49%) Internet
7 4 (4.49%) LAN
7 4 (4.49%) VPN
7 4 (4.49%) WAN
8 3 (3.37%) SSH
9 1 (1.12%) Cisco ASA
9 1 (1.12%) Cisco Nexus
9 1 (1.12%) NAS
9 1 (1.12%) SNMP
9 1 (1.12%) Software-Defined Networking
9 1 (1.12%) VLAN
Database & Business Intelligence
1 19 (21.35%) PostgreSQL
2 15 (16.85%) Hadoop
3 10 (11.24%) Big Data
3 10 (11.24%) MongoDB
3 10 (11.24%) MySQL
4 9 (10.11%) SQL Server
5 7 (7.87%) Data Lake
5 7 (7.87%) Sqoop
6 6 (6.74%) NoSQL
7 5 (5.62%) Redis
7 5 (5.62%) Relational Database
8 4 (4.49%) Apache Cassandra
8 4 (4.49%) Apache Hive
8 4 (4.49%) HBase
8 4 (4.49%) Impala
9 3 (3.37%) RDBMS
10 2 (2.25%) Amazon DynamoDB
11 1 (1.12%) Amazon RDS
11 1 (1.12%) Oracle Database
11 1 (1.12%) Oracle Database 12c
Development Applications
1 33 (37.08%) Jenkins
2 19 (21.35%) Git (software)
3 9 (10.11%) JIRA
3 9 (10.11%) Vagrant
4 6 (6.74%) Artifactory
5 5 (5.62%) Bitbucket
6 3 (3.37%) Sonatype Nexus
7 2 (2.25%) Atlassian Bamboo
7 2 (2.25%) Travis CI
8 1 (1.12%) TeamCity
General
1 3 (3.37%) Telecoms
2 2 (2.25%) Automotive
2 2 (2.25%) Games
3 1 (1.12%) Legal
3 1 (1.12%) Manufacturing
Job Titles
1 32 (35.96%) DevOps Engineer
2 14 (15.73%) Administrator
3 13 (14.61%) Linux Engineer
3 13 (14.61%) Systems Administrator
3 13 (14.61%) Unix Administrator
4 12 (13.48%) Unix Systems Administrator
5 11 (12.36%) Linux Administrator
5 11 (12.36%) Linux Systems Administrator
6 10 (11.24%) Unix Linux Systems Administrator
7 7 (7.87%) Developer
8 6 (6.74%) Infrastructure Engineer
9 5 (5.62%) Cloud Engineer
10 4 (4.49%) AWS DevOps
10 4 (4.49%) Consultant
10 4 (4.49%) DevOps Consultant
10 4 (4.49%) Kubernetes Engineer
10 4 (4.49%) Linux DevOps Engineer
10 4 (4.49%) Linux/Unix DevOps
10 4 (4.49%) Solaris Administrator
10 4 (4.49%) Solaris Systems Administrator
Libraries, Frameworks & Software Standards
1 11 (12.36%) Kafka
2 10 (11.24%) Elastic Stack
2 10 (11.24%) LDAP
2 10 (11.24%) Web Services
3 9 (10.11%) SOAP
4 7 (7.87%) RESTful
5 5 (5.62%) LAPP Stack
5 5 (5.62%) MCollective
5 5 (5.62%) YAML
6 4 (4.49%) Sensu
7 3 (3.37%) Node.js
7 3 (3.37%) RabbitMQ
8 2 (2.25%) CSS
8 2 (2.25%) HTML
8 2 (2.25%) HTML5
8 2 (2.25%) LAMP
9 1 (1.12%) AngularJS
9 1 (1.12%) CSS3
9 1 (1.12%) JSON
9 1 (1.12%) Software Packaging
Miscellaneous
1 6 (6.74%) Greenfield Project
1 6 (6.74%) Management Information System
2 5 (5.62%) Data Centre
2 5 (5.62%) Linux Command Line
3 4 (4.49%) Computer Science
3 4 (4.49%) PKI
3 4 (4.49%) Video on Demand
4 3 (3.37%) Public Cloud
5 2 (2.25%) Analytical Skills
6 1 (1.12%) BBC
6 1 (1.12%) CESG
6 1 (1.12%) Clustering
6 1 (1.12%) Private Cloud
6 1 (1.12%) Replication
Operating Systems
1 89 (100.00%) Linux
2 36 (40.45%) Red Hat Enterprise Linux
3 24 (26.97%) Unix
4 19 (21.35%) Ubuntu
4 19 (21.35%) Windows
5 13 (14.61%) Solaris
6 9 (10.11%) Debian
7 6 (6.74%) Windows 10
8 5 (5.62%) FreeBSD
8 5 (5.62%) Windows Server
9 4 (4.49%) SUSE
9 4 (4.49%) Windows 7
9 4 (4.49%) Windows Server 2008
9 4 (4.49%) Windows Server 2012
10 3 (3.37%) DC/OS
10 3 (3.37%) HPUX
11 2 (2.25%) Amazon Linux
Processes & Methodologies
1 42 (47.19%) DevOps
2 27 (30.34%) Configuration Management
3 21 (23.60%) Open Source
4 15 (16.85%) Agile Software Development
5 13 (14.61%) Disaster Recovery
6 11 (12.36%) Continuous Integration
6 11 (12.36%) Server Hardening
7 9 (10.11%) ITIL
8 7 (7.87%) Analytics
8 7 (7.87%) Benchmarking
8 7 (7.87%) Business Continuity
8 7 (7.87%) Change Management
8 7 (7.87%) Data Strategy
8 7 (7.87%) Information Security
8 7 (7.87%) TDD
9 6 (6.74%) Test Automation
10 5 (5.62%) Integration Testing
10 5 (5.62%) Load Balancing
10 5 (5.62%) Load Testing
10 5 (5.62%) Unit Testing
Programming Languages
1 44 (49.44%) Python
2 28 (31.46%) Bash Shell
3 24 (26.97%) Perl
4 16 (17.98%) Shell Script
5 15 (16.85%) Java
5 15 (16.85%) Ruby
6 12 (13.48%) SQL
7 10 (11.24%) PowerShell
8 7 (7.87%) AWK
8 7 (7.87%) Bourne shell
8 7 (7.87%) JavaScript
8 7 (7.87%) Korn
9 5 (5.62%) PHP
9 5 (5.62%) Scala
10 3 (3.37%) C++
10 3 (3.37%) Groovy
11 2 (2.25%) C
11 2 (2.25%) Go
11 2 (2.25%) VB
11 2 (2.25%) VBScript
Qualifications
1 18 (20.22%) Security Cleared
2 15 (16.85%) SC Cleared
3 4 (4.49%) Degree
3 4 (4.49%) OCA
3 4 (4.49%) OCP
3 4 (4.49%) Oracle Certification
3 4 (4.49%) RHCE
3 4 (4.49%) RHCSA
4 3 (3.37%) DV Cleared
5 2 (2.25%) Cisco Certification
6 1 (1.12%) BPSS Clearance
6 1 (1.12%) CCNA
6 1 (1.12%) CISM
6 1 (1.12%) CISSP
6 1 (1.12%) MCSE
6 1 (1.12%) Microsoft Certification
Quality Assurance & Compliance
1 2 (2.25%) GCP
1 2 (2.25%) SLA
2 1 (1.12%) JSP 440
System Software
1 24 (26.97%) Docker
2 18 (20.22%) VMware Infrastructure
3 11 (12.36%) Active Directory
4 8 (8.99%) HDFS
5 7 (7.87%) Apache Flume
5 7 (7.87%) GlusterFS
5 7 (7.87%) Veritas Cluster Server
5 7 (7.87%) Virtual Machines
5 7 (7.87%) VMware ESXi
6 5 (5.62%) iptables
6 5 (5.62%) KVM
6 5 (5.62%) Postfix
6 5 (5.62%) Varnish
7 4 (4.49%) Hyper-V
7 4 (4.49%) Xen
8 3 (3.37%) Virtual Desktop
8 3 (3.37%) VMware Workstation
9 2 (2.25%) NFS
9 2 (2.25%) VirtualBox
9 2 (2.25%) vSphere
Systems Management
1 36 (40.45%) Puppet
2 33 (37.08%) Ansible
3 18 (20.22%) Opscode Chef
4 13 (14.61%) Kubernetes
5 12 (13.48%) Terraform
6 11 (12.36%) SELinux
7 8 (8.99%) Kibana
8 7 (7.87%) NetBackup
8 7 (7.87%) Oozie
8 7 (7.87%) Oracle ZFS
8 7 (7.87%) Packer
8 7 (7.87%) Red Hat Satellite
8 7 (7.87%) Red Hat Spacewalk
8 7 (7.87%) Veritas Storage Foundation
9 6 (6.74%) logstash
9 6 (6.74%) Nagios
10 5 (5.62%) Cacti
11 4 (4.49%) Consul
11 4 (4.49%) HAProxy
11 4 (4.49%) yum
Vendors
1 32 (35.96%) Red Hat
2 27 (30.34%) VMware
3 19 (21.35%) Oracle
4 11 (12.36%) Google
5 9 (10.11%) Cloudera
6 8 (8.99%) HP
6 8 (8.99%) Microsoft
6 8 (8.99%) SaltStack
7 7 (7.87%) Brocade
7 7 (7.87%) Centrify
7 7 (7.87%) EMC
7 7 (7.87%) Hortonworks
7 7 (7.87%) MapR
7 7 (7.87%) StorageTek
7 7 (7.87%) Sun
7 7 (7.87%) Veritas
8 6 (6.74%) Splunk
9 5 (5.62%) Citrix
9 5 (5.62%) Juniper
9 5 (5.62%) NetApp