The following table provides summary statistics for contract job vacancies advertised in England 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 26 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
26 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
UK / England
Rank 307 368 379
Rank change year-on-year +61 +11  
Contract jobs citing CentOS 287 257 223
As % of all contract IT jobs advertised in England 0.70% 0.52% 0.46%
As % of the Operating Systems category 3.38% 2.45% 2.09%
Number of daily rates quoted 206 173 155
Median daily rate £475 £450 £425
Median daily rate % change year-on-year +5.55% +5.88%  
90% offered a daily rate of more than £350 £310 £232
10% offered a daily rate of more than £600 £550 £500
UK excluding London median daily rate £475 £425 £375
% change year-on-year +11.76% +13.33%  
Number of hourly rates quoted 5 3 1
Median hourly rate £17.50 £50.00 £47.50
Median hourly rate % change year-on-year -65.00% +5.26%  
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 England with a requirement for operating system skills.

Contract Operating System Skills
England
Contract job vacancies with a requirement for operating system skills 8480 10494 10646
As % of all contract IT job vacancies advertised in England 20.55% 21.39% 22.02%
Number of daily rates quoted 5446 6556 6095
Median daily rate £413 £388 £375
Median daily rate % change year-on-year +6.45% +3.33%  
90% offered a daily rate of more than £185 £200 £175
10% offered a daily rate of more than £550 £543 £525
UK excluding London median daily rate £390 £363 £338
% change year-on-year +7.58% +7.40%  
Number of hourly rates quoted 510 639 888
Median hourly rate £16.50 £16.50 £16.00
Median hourly rate % change year-on-year - +3.12%  
90% offered a hourly rate of more than £11.00 £12.00 £11.00
10% offered a hourly rate of more than £43.50 £45.00 £37.50
UK excluding London median hourly rate £15.25 £16.92 £15.50
% change year-on-year -9.86% +9.16%  

CentOS
Job Vacancy Trend in England

The job posting trend of jobs advertised in England 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 England

CentOS
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for CentOS in England

CentOS
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing CentOS in England over the 3 months to 26 March 2017.

Contractor daily rate histogram for CentOS in England

CentOS
Contractor Hourly Rate Trend in England

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

Contractor hourly rate trend for CentOS in England

CentOS
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the England region over the 3 months to 26 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
London +49 171 £500 +8.10% 52
South East +18 45 £475 +11.76% 23
West Midlands +40 29 £490 +32.43% 4
North West +36 17 £450 +5.88% 7
South West -2 13 £495 +16.47% 13
East of England +3 7 £538 +95.45% 2
East Midlands +2 3 £268 -20.74%
Yorkshire +1 2 £425 -5.55% 4
CentOS
UK

CentOS
Top 30 Related IT Skills in England

For the 6 months to 26 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 England region with a requirement for CentOS.

1 634 (100.00%) Linux
2 346 (54.57%) DevOps
3 339 (53.47%) Red Hat Enterprise Linux
4 308 (48.58%) Puppet
5 283 (44.64%) Python
6 274 (43.22%) Ansible
7 272 (42.90%) Bash Shell
8 265 (41.80%) Red Hat
9 254 (40.06%) Jenkins
10 239 (37.70%) Docker
11 230 (36.28%) Amazon AWS
12 201 (31.70%) Ruby
13 197 (31.07%) Java
14 191 (30.13%) Ubuntu
14 191 (30.13%) Security Cleared
14 191 (30.13%) Git (software)
15 190 (29.97%) VMware
16 182 (28.71%) Agile Software Development
17 174 (27.44%) Configuration Management
18 172 (27.13%) Continuous Integration
19 162 (25.55%) SC Cleared
20 129 (20.35%) Windows
21 127 (20.03%) VMware Infrastructure
22 123 (19.40%) Terraform
23 117 (18.45%) Apache
24 114 (17.98%) Opscode Chef
25 112 (17.67%) Perl
26 109 (17.19%) PostgreSQL
27 97 (15.30%) Kubernetes
28 96 (15.14%) MySQL

CentOS
Top Related IT Skills in England 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
1 117 (18.45%) Apache
2 85 (13.41%) Confluence
3 70 (11.04%) Elasticsearch
4 62 (9.78%) Tomcat
5 58 (9.15%) nginx
6 42 (6.62%) OpenStack
7 22 (3.47%) Jetty
8 21 (3.31%) IIS
9 16 (2.52%) WildFly
10 13 (2.05%) Mule ESB
11 12 (1.89%) WebSphere
12 10 (1.58%) JBoss
13 7 (1.10%) Apache Qpid
13 7 (1.10%) Apache Spark
14 5 (0.79%) Apache Pig
14 5 (0.79%) Apache Solr
15 4 (0.63%) SAS
16 3 (0.47%) Apache ServiceMix
16 3 (0.47%) CMS
16 3 (0.47%) GlassFish
Applications
1 17 (2.68%) HipChat
2 5 (0.79%) MS Office
3 4 (0.63%) MS Excel
4 1 (0.16%) Adobe Creative Suite
4 1 (0.16%) Adobe Illustrator
4 1 (0.16%) Photoshop
Business Applications
1 7 (1.10%) SAP Oil and Gas
2 4 (0.63%) Infor M3
3 1 (0.16%) IBM Operational Decision Manager
3 1 (0.16%) Magento
Cloud Services
1 230 (36.28%) Amazon AWS
2 60 (9.46%) Microsoft Azure
3 48 (7.57%) Amazon EC2
4 43 (6.78%) GitHub
5 41 (6.47%) Amazon S3
6 37 (5.84%) AWS CloudFormation
7 27 (4.26%) AWS Lambda
8 25 (3.94%) Amazon CloudWatch
9 24 (3.79%) Route 53
10 23 (3.63%) Virtual Private Cloud
11 14 (2.21%) Amazon ELB
12 11 (1.74%) IaaS
13 10 (1.58%) Cloud Computing
14 9 (1.42%) Amazon ElastiCache
15 8 (1.26%) Amazon SQS
15 8 (1.26%) AWS CloudTrail
16 7 (1.10%) AWS Elastic Beanstalk
16 7 (1.10%) Google Cloud Platform
17 6 (0.95%) CloudFront
18 5 (0.79%) Azure Active Directory
Communications & Networking
1 96 (15.14%) TCP/IP
2 86 (13.56%) DNS
3 83 (13.09%) VPN
4 63 (9.94%) Firewall
5 58 (9.15%) LDAP
6 55 (8.68%) HTTP
7 52 (8.20%) SSH
8 43 (6.78%) SSL
9 37 (5.84%) SAN
10 32 (5.05%) Reverse Proxy
11 27 (4.26%) IPsec
12 24 (3.79%) OpenVPN
13 22 (3.47%) Cisco Nexus
14 21 (3.31%) OpenLDAP
15 19 (3.00%) DHCP
16 18 (2.84%) SMTP
17 16 (2.52%) ICMP
18 13 (2.05%) Internet
19 12 (1.89%) Kerberos
20 10 (1.58%) Network Security
Database & Business Intelligence
1 109 (17.19%) PostgreSQL
2 96 (15.14%) MySQL
3 66 (10.41%) Hadoop
4 60 (9.46%) NoSQL
5 35 (5.52%) SQL Server
6 32 (5.05%) Big Data
7 30 (4.73%) Amazon RDS
8 26 (4.10%) Apache Cassandra
8 26 (4.10%) MongoDB
9 24 (3.79%) Oracle Database
10 23 (3.63%) Amazon DynamoDB
11 22 (3.47%) MariaDB
12 21 (3.31%) Relational Database
13 15 (2.37%) Apache Hive
14 14 (2.21%) Oracle Database 11g
15 9 (1.42%) Redis
16 7 (1.10%) Data Warehouse
16 7 (1.10%) Impala
16 7 (1.10%) SQL Server 2012
17 4 (0.63%) DB2
Development Applications
1 254 (40.06%) Jenkins
2 191 (30.13%) Git (software)
3 88 (13.88%) JIRA
4 64 (10.09%) Maven
5 37 (5.84%) Vagrant
6 34 (5.36%) Sonatype Nexus
7 32 (5.05%) Atlassian Bamboo
7 32 (5.05%) Bitbucket
8 28 (4.42%) JUnit
9 27 (4.26%) SonarQube
9 27 (4.26%) Subversion
10 26 (4.10%) Ant
11 22 (3.47%) GitLab
11 22 (3.47%) Hudson
12 21 (3.31%) Liquibase
13 18 (2.84%) TeamCity
14 17 (2.68%) Gerrit
14 17 (2.68%) JIRA Agile
15 14 (2.21%) Mercurial
16 10 (1.58%) GoCD
General
1 43 (6.78%) Finance
2 24 (3.79%) Telecoms
3 17 (2.68%) Law
4 10 (1.58%) Retail
5 9 (1.42%) Marketing
6 8 (1.26%) Manufacturing
7 7 (1.10%) Electronics
8 6 (0.95%) Banking
9 3 (0.47%) Legal
10 1 (0.16%) Back Office
10 1 (0.16%) Front Office
10 1 (0.16%) Games
10 1 (0.16%) Investment Banking
10 1 (0.16%) Pharmaceutical
Job Titles
1 219 (34.54%) DevOps Engineer
2 101 (15.93%) AWS DevOps
3 96 (15.14%) Administrator
4 78 (12.30%) Linux Engineer
5 73 (11.51%) AWS Engineer
5 73 (11.51%) Systems Administrator
6 72 (11.36%) Linux/Unix DevOps
7 70 (11.04%) Linux Administrator
8 67 (10.57%) Consultant
9 65 (10.25%) Developer
10 63 (9.94%) Linux Systems Administrator
11 52 (8.20%) DevOps Consultant
12 44 (6.94%) Senior DevOps
13 40 (6.31%) Linux DevOps Engineer
14 38 (5.99%) DBA
15 33 (5.21%) AWS Consultant
16 26 (4.10%) Architect
17 22 (3.47%) Java Engineer
17 22 (3.47%) MySQL DBA
18 21 (3.31%) Java Developer
Libraries, Frameworks & Software Standards
1 71 (11.20%) Elastic Stack
2 44 (6.94%) LAMP
3 41 (6.47%) Web Services
4 35 (5.52%) MCollective
5 33 (5.21%) REST
6 31 (4.89%) HTML
7 26 (4.10%) CSS
7 26 (4.10%) XML
8 22 (3.47%) JSON
8 22 (3.47%) RabbitMQ
9 20 (3.15%) LAPP Stack
9 20 (3.15%) Software Packaging
10 18 (2.84%) Kafka
11 17 (2.68%) LEMP Stack
11 17 (2.68%) XSLT
12 16 (2.52%) .NET
12 16 (2.52%) Node.js
12 16 (2.52%) RSS
13 14 (2.21%) PostGIS
14 13 (2.05%) Sensu
Miscellaneous
1 52 (8.20%) Public Cloud
2 51 (8.04%) Data Centre
3 42 (6.62%) Linux Command Line
4 26 (4.10%) Clustering
5 16 (2.52%) Web 2.0
6 15 (2.37%) Analytical Skills
6 15 (2.37%) Computer Science
6 15 (2.37%) Replication
7 14 (2.21%) Management Information System
7 14 (2.21%) Private Cloud
8 13 (2.05%) PKI
9 11 (1.74%) Algorithms
10 7 (1.10%) Embedded Systems
11 6 (0.95%) Enterprise Storage
12 5 (0.79%) CMDB
13 4 (0.63%) Derivative
13 4 (0.63%) Digital TV
13 4 (0.63%) MPEG
13 4 (0.63%) Spread Betting
13 4 (0.63%) STB
Operating Systems
1 634 (100.00%) Linux
2 339 (53.47%) Red Hat Enterprise Linux
3 191 (30.13%) Ubuntu
4 129 (20.35%) Windows
5 83 (13.09%) Unix
6 53 (8.36%) Debian
7 43 (6.78%) Windows Server
8 25 (3.94%) Fedora
8 25 (3.94%) SUSE
9 23 (3.63%) Windows Server 2008
10 20 (3.15%) Windows Server 2012
11 13 (2.05%) RancherOS
11 13 (2.05%) VyOS
12 12 (1.89%) Windows Server 2003
13 11 (1.74%) Solaris
14 5 (0.79%) CoreOS
15 4 (0.63%) AIX
15 4 (0.63%) Apple iOS
15 4 (0.63%) Data ONTAP
15 4 (0.63%) Windows 2000
Processes & Methodologies
1 346 (54.57%) DevOps
2 182 (28.71%) Agile Software Development
3 174 (27.44%) Configuration Management
4 172 (27.13%) Continuous Integration
5 85 (13.41%) Scrum
6 71 (11.20%) Load Balancing
7 67 (10.57%) Continuous Delivery
8 53 (8.36%) Open Source
8 53 (8.36%) Service Management
9 46 (7.26%) ITIL
10 38 (5.99%) Migration
11 37 (5.84%) Performance Tuning
12 34 (5.36%) Mentoring
13 29 (4.57%) OOP
14 28 (4.42%) OO
15 26 (4.10%) Analytics
15 26 (4.10%) Business Intelligence
16 24 (3.79%) Continuous Deployment
17 23 (3.63%) Performance Monitoring
17 23 (3.63%) Stakeholder Management
Programming Languages
1 283 (44.64%) Python
2 272 (42.90%) Bash Shell
3 201 (31.70%) Ruby
4 197 (31.07%) Java
5 112 (17.67%) Perl
6 64 (10.09%) JavaScript
7 51 (8.04%) SQL
8 50 (7.89%) PHP
9 47 (7.41%) Shell Script
10 35 (5.52%) C
11 32 (5.05%) PowerShell
12 21 (3.31%) C#
13 20 (3.15%) C++
14 11 (1.74%) CQL
15 9 (1.42%) Groovy
15 9 (1.42%) Korn
16 8 (1.26%) Go
17 7 (1.10%) Scala
18 6 (0.95%) PL/SQL
18 6 (0.95%) VB
Qualifications
1 191 (30.13%) Security Cleared
2 162 (25.55%) SC Cleared
3 38 (5.99%) Degree
4 17 (2.68%) DV Cleared
5 16 (2.52%) Cisco Certification
5 16 (2.52%) VMware Certified Professional (VCP)
6 13 (2.05%) AWS Certification
7 10 (1.58%) CCNP
8 9 (1.42%) CCNA
9 7 (1.10%) Microsoft Certification
10 6 (0.95%) MCP
11 4 (0.63%) CEH
11 4 (0.63%) CTC Cleared
11 4 (0.63%) RHCE
11 4 (0.63%) RHCT
12 3 (0.47%) BPSS Clearance
12 3 (0.47%) CESG Certified Professional
13 2 (0.32%) MCSE
13 2 (0.32%) RHCSA
13 2 (0.32%) SANS
Quality Assurance & Compliance
1 17 (2.68%) QA
2 9 (1.42%) PCI DSS
3 7 (1.10%) Disclosure Scotland
4 3 (0.47%) JSP 440
5 2 (0.32%) SLA
6 1 (0.16%) ISO/IEC 27001
6 1 (0.16%) PMO
System Software
1 239 (37.70%) Docker
2 127 (20.03%) VMware Infrastructure
3 57 (8.99%) Virtual Machines
4 48 (7.57%) Active Directory
5 44 (6.94%) vCloud
6 26 (4.10%) Postfix
7 24 (3.79%) Squid
8 20 (3.15%) vSphere
9 17 (2.68%) Xen
10 12 (1.89%) Hyper-V
10 12 (1.89%) VMware ESX
11 11 (1.74%) KVM
12 9 (1.42%) VirtualBox
13 7 (1.10%) Apache ZooKeeper
13 7 (1.10%) VMware ESXi
14 5 (0.79%) GlusterFS
14 5 (0.79%) HDFS
15 4 (0.63%) LXC
15 4 (0.63%) NFS
16 3 (0.47%) Shibboleth
Systems Management
1 308 (48.58%) Puppet
2 274 (43.22%) Ansible
3 123 (19.40%) Terraform
4 114 (17.98%) Opscode Chef
5 97 (15.30%) Kubernetes
6 62 (9.78%) Nagios
6 62 (9.78%) ZABBIX
7 60 (9.46%) Kibana
8 51 (8.04%) logstash
9 39 (6.15%) HAProxy
10 29 (4.57%) Rancher
10 29 (4.57%) SELinux
11 26 (4.10%) Packer
12 23 (3.63%) Consul
13 22 (3.47%) Docker Swarm
14 21 (3.31%) Graphite
15 14 (2.21%) Salt
15 14 (2.21%) SCCM
16 12 (1.89%) Pingdom
17 11 (1.74%) yum
Vendors
1 265 (41.80%) Red Hat
2 190 (29.97%) VMware
3 53 (8.36%) Oracle
4 44 (6.94%) Cisco
5 37 (5.84%) Microsoft
6 36 (5.68%) AppDynamics
7 31 (4.89%) Atlassian
8 25 (3.94%) Splunk
9 23 (3.63%) Sonatype
10 16 (2.52%) Google
10 16 (2.52%) HP
10 16 (2.52%) SaltStack
11 15 (2.37%) New Relic
12 13 (2.05%) EMC
12 13 (2.05%) Vyatta
13 12 (1.89%) PagerDuty
14 11 (1.74%) Sybase
15 10 (1.58%) Symantec
16 9 (1.42%) IBM
17 8 (1.26%) NetApp
West London
Experis Ltd
Rate: £500 - £530 per day
Posted: 10 hours ago
South East London
Careerwise UK Limited
Rate: £550 - £650 per day
Posted: Yesterday
City, London
Computer People
Rate: £550 - £600 per day
Posted: 2 days ago
London
Opus Recruitment Solutions Ltd
Rate: £550 - £600 per day
Posted: 3 days ago
London
Piksel
Rate: Highly Competitive
Posted: 4 days ago
South West
Spring Technology
Rate: Negotiable
Posted: 6 days ago
West London
Experis Ltd
Rate: £540.00 - £580.00 per day
Posted: 5 days ago
South East London
Edison Hill Ltd
Rate: From £300 to £340 per day
Posted: 5 days ago
Leeds, West Yorkshire
Ventula Consulting Ltd
Rate: From £350 to £425 per day
Posted: 5 days ago
Bristol, Avon
HAYS INFORMATION TECHNOLOGY
Rate: £300 - £400 per day
Posted: 6 days ago
Crawley, West Sussex
Search Consultancy
Posted: 6 days ago
Hampshire
TEKsystems
Rate: £319 - £371 per day
Posted: 6 days ago
Hampshire
People Source Consulting
Rate: £450 - £500 per day
Posted: 6 days ago
London
TEKsystems
Rate: £550 - £650 per day
Posted: 6 days ago
Hampshire
People Source Consulting
Rate: £450 - £500 per day
Posted: 10 days ago
Havant, Hampshire
Jobsite
Rate: Competitive Salary plus 29 days holiday (pro rata)
Posted: 25 days ago