The table below looks at the statistics for CentOS skills in IT contracts advertised across the UK. Included is a guide to the contractor rates offered in IT contracts that have cited CentOS over the 3 months to 18 January 2017 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
18 Jan 2017
Same period 2016 Same period 2015
CentOS Linux
UK
Rank 317 340 334
Rank change year-on-year
+23 -6
Contract jobs citing CentOS 297 304 289
As % of all contract IT jobs located in the UK 0.66% 0.60% 0.58%
As % of the Operating Systems category 3.15% 2.79% 2.54%
Number of daily rates quoted 227 212 203
Median daily rate £468 £450 £425
Median daily rate % change year-on-year
+3.88% +5.88%
90% offered a daily rate of more than £350 £350 £245
10% offered a daily rate of more than £575 £566 £530
UK excluding London median daily rate £450 £450 £350
% change year-on-year
- +28.57%
Number of hourly rates quoted 1 4 1
Median hourly rate £16.00 £50.00 £47.50
Median hourly rate % change year-on-year
-68.00% +5.26%
UK excluding London median hourly rate - £50.50 £47.50
% change year-on-year
- +6.31%

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in contract jobs advertised across the UK.

Operating Systems Category
UK
Contract IT job ads with a match in the
Operating Systems category
9443 10898 11363
As % of all contract IT jobs located in the UK 21.06% 21.43% 22.77%
Number of daily rates quoted 5950 6509 6686
Median daily rate £396 £375 £360
Median daily rate % change year-on-year
+5.60% +4.16%
90% offered a daily rate of more than £175 £175 £170
10% offered a daily rate of more than £550 £550 £513
UK excluding London median daily rate £350 £350 £330
% change year-on-year
- +6.06%
Number of hourly rates quoted 618 826 942
Median hourly rate £16.50 £17.50 £16.00
Median hourly rate % change year-on-year
-5.71% +9.37%
90% offered a hourly rate of more than £11.17 £11.00 £11.00
10% offered a hourly rate of more than £47.00 £45.00 £35.00
UK excluding London median hourly rate £16.50 £17.00 £16.00
% change year-on-year
-2.94% +6.25%

CentOS
Jobs Demand Trend

The demand trend of contract jobs citing CentOS as a proportion of all IT contracts with a match in the Operating Systems category.

CentOS Jobs Demand Trend in the UK

CentOS
Daily Rate Trend

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

CentOS Daily Rate Trend in the UK

CentOS
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS within the UK over the 3 months to 18 January 2017.

CentOS Daily Rate Histogram in the UK

CentOS
Hourly Rate Trend

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

CentOS Hourly Rate Trend in the UK

CentOS
Top 30 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the UK over the 3 months to 18 January 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
England +23 291 £470 +4.44% 79
London +10 176 £475 - 28
South East +26 66 £475 +6.14% 23
Berkshire +16 32 £500 +11.11% 9
North West +30 20 £400 - 4
Reading +11 17 £500 +11.11% 5
City of London -10 16 £418 -6.07% 7
Surrey +24 15 £400 +8.47% 6
Manchester +23 15 £400 - 4
Hampshire -2 10 £425 +49.12% 5
Croydon +1 9 £468 -1.57%
Windsor - 9 £550 -
Yorkshire -22 7 £450 -8.16% 4
South Yorkshire -17 6 £450 -10.00% 2
West Midlands - 6 £410 - 4
South West +13 5 £283 -29.37% 6
Hammersmith 0 4 £525 -4.54%
Farnborough -6 4 £400 -11.11%
Woking -10 4 £400 +18.51%
Sheffield -14 4 £438 -12.50% 2
Milton Keynes - 4 £500 -
Malvern - 4 £413 -
Buckinghamshire - 4 £500 -
Worcestershire - 4 £413 -
Scotland +26 3 £394 - 1
Bracknell -2 3 £450 -21.73%
Swindon - 3 £215 -
Wiltshire - 3 £215 -
Glasgow +9 2 £338 -
Wales +9 2 £400 +40.35%

CentOS
Top 30 Related IT Skills

For the 6 months to 18 January 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 with a requirement for CentOS.

1 718 (100.00%) Linux
2 423 (58.91%) DevOps
3 385 (53.62%) Puppet
4 331 (46.10%) Red Hat Enterprise Linux
5 328 (45.68%) Jenkins
6 317 (44.15%) Ansible
7 311 (43.31%) Red Hat
8 285 (39.69%) Python
9 283 (39.42%) Amazon AWS
10 272 (37.88%) Agile Software Development
10 272 (37.88%) VMware
11 268 (37.33%) Docker
12 250 (34.82%) Ruby
12 250 (34.82%) Ubuntu
13 242 (33.70%) Bash Shell
13 242 (33.70%) Continuous Integration
14 240 (33.43%) Git (software)
14 240 (33.43%) Configuration Management
15 229 (31.89%) Security Cleared
16 218 (30.36%) Apache
17 197 (27.44%) SC Cleared
18 185 (25.77%) Java
19 182 (25.35%) PostgreSQL
20 164 (22.84%) Scrum
21 154 (21.45%) DNS
22 151 (21.03%) VMware Infrastructure
22 151 (21.03%) Opscode Chef
23 145 (20.19%) JIRA
24 140 (19.50%) Terraform
25 136 (18.94%) Perl

CentOS
Top Related IT Skills 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
1 218 (30.36%) Apache
2 131 (18.25%) Confluence
3 95 (13.23%) Elasticsearch
4 92 (12.81%) Tomcat
5 79 (11.00%) nginx
6 64 (8.91%) OpenStack
7 36 (5.01%) Jetty
8 30 (4.18%) IIS
8 30 (4.18%) WildFly
9 25 (3.48%) Mule ESB
10 13 (1.81%) JBoss
10 13 (1.81%) WebSphere
11 11 (1.53%) Apache Spark
12 9 (1.25%) MS Exchange
12 9 (1.25%) SAS
13 7 (0.97%) Apache Qpid
14 6 (0.84%) Exchange Server 2010
15 5 (0.70%) CMS
16 4 (0.56%) Apache Pig
17 3 (0.42%) Apache ServiceMix
Applications
1 70 (9.75%) HipChat
2 8 (1.11%) MS Excel
2 8 (1.11%) MS Office
3 2 (0.28%) Adobe Creative Suite
4 1 (0.14%) Adobe Illustrator
4 1 (0.14%) Photoshop
Business Applications
1 5 (0.70%) SAP Oil and Gas
2 4 (0.56%) Infor M3
3 1 (0.14%) IBM Operational Decision Manager
3 1 (0.14%) Magento
Cloud Services
1 283 (39.42%) Amazon AWS
2 56 (7.80%) GitHub
3 53 (7.38%) Amazon EC2
4 51 (7.10%) Microsoft Azure
5 41 (5.71%) Amazon S3
6 28 (3.90%) Route 53
7 27 (3.76%) AWS CloudFormation
8 19 (2.65%) IaaS
9 17 (2.37%) Amazon CloudWatch
9 17 (2.37%) AWS Lambda
9 17 (2.37%) Virtual Private Cloud
10 14 (1.95%) Amazon ELB
11 13 (1.81%) Amazon ElastiCache
11 13 (1.81%) Google Cloud Platform
12 8 (1.11%) Amazon SQS
12 8 (1.11%) AWS CloudTrail
12 8 (1.11%) Cloud Computing
12 8 (1.11%) DigitalOcean
13 7 (0.97%) AWS Elastic Beanstalk
14 6 (0.84%) CloudFront
Communications & Networking
1 154 (21.45%) DNS
2 108 (15.04%) VPN
3 90 (12.53%) SSH
4 89 (12.40%) Firewall
5 88 (12.26%) TCP/IP
6 74 (10.31%) OpenLDAP
6 74 (10.31%) OpenVPN
7 49 (6.82%) LDAP
8 46 (6.41%) Reverse Proxy
9 38 (5.29%) SAN
9 38 (5.29%) SSL
10 33 (4.60%) HTTP
11 27 (3.76%) IPsec
12 25 (3.48%) Cisco Nexus
13 24 (3.34%) SMTP
14 23 (3.20%) DHCP
15 18 (2.51%) DMZ
16 13 (1.81%) Internet
16 13 (1.81%) Network Security
17 11 (1.53%) Wireshark
Database & Business Intelligence
1 182 (25.35%) PostgreSQL
2 112 (15.60%) Hadoop
3 96 (13.37%) MySQL
4 56 (7.80%) NoSQL
5 34 (4.74%) Amazon RDS
6 26 (3.62%) MongoDB
6 26 (3.62%) SQL Server
7 22 (3.06%) Big Data
8 18 (2.51%) Oracle Database
8 18 (2.51%) Relational Database
9 14 (1.95%) Amazon DynamoDB
9 14 (1.95%) Oracle Database 11g
10 13 (1.81%) Redis
11 11 (1.53%) MariaDB
12 10 (1.39%) Apache Cassandra
13 9 (1.25%) Apache Hive
14 4 (0.56%) Ingres
14 4 (0.56%) SQL Server 2012
15 3 (0.42%) Data Mining
15 3 (0.42%) Data Warehouse
Development Applications
1 328 (45.68%) Jenkins
2 240 (33.43%) Git (software)
3 145 (20.19%) JIRA
4 112 (15.60%) Maven
5 90 (12.53%) Sonatype Nexus
6 82 (11.42%) Ant
7 81 (11.28%) SonarQube
8 80 (11.14%) Bitbucket
9 79 (11.00%) JIRA Agile
10 73 (10.17%) JUnit
11 70 (9.75%) Liquibase
12 39 (5.43%) GitLab
13 38 (5.29%) Subversion
14 36 (5.01%) Vagrant
15 35 (4.87%) Gerrit
16 33 (4.60%) Atlassian Bamboo
17 30 (4.18%) Hudson
17 30 (4.18%) Mercurial
18 24 (3.34%) TeamCity
19 14 (1.95%) Gradle
General
1 36 (5.01%) Finance
2 16 (2.23%) Telecoms
3 13 (1.81%) Back Office
4 11 (1.53%) Law
4 11 (1.53%) Retail
5 10 (1.39%) Legal
6 8 (1.11%) Publishing
7 7 (0.97%) Manufacturing
7 7 (0.97%) Marketing
8 5 (0.70%) Electronics
8 5 (0.70%) Front Office
9 4 (0.56%) Games
10 2 (0.28%) Banking
11 1 (0.14%) Advertising
11 1 (0.14%) Billing
11 1 (0.14%) Pharmaceutical
Job Titles
1 286 (39.83%) DevOps Engineer
2 115 (16.02%) Administrator
3 108 (15.04%) Linux Engineer
4 101 (14.07%) AWS DevOps
5 97 (13.51%) Systems Administrator
6 84 (11.70%) Linux Administrator
7 80 (11.14%) Linux/Unix DevOps
8 79 (11.00%) Linux Systems Administrator
9 73 (10.17%) Senior DevOps
10 72 (10.03%) AWS Engineer
11 70 (9.75%) Consultant
12 67 (9.33%) Developer
13 55 (7.66%) DevOps Consultant
14 53 (7.38%) Linux DevOps Engineer
15 46 (6.41%) Senior DevOps Engineer
16 31 (4.32%) Infrastructure Engineer
17 30 (4.18%) AWS Consultant
18 23 (3.20%) Systems Engineer
19 21 (2.92%) Senior Consultant
19 21 (2.92%) Senior DevOps Consultant
Libraries, Frameworks & Software Standards
1 104 (14.48%) ELK Stack
2 83 (11.56%) MCollective
3 75 (10.45%) Software Packaging
4 55 (7.66%) LAMP
5 45 (6.27%) LAPP Stack
6 44 (6.13%) Web Services
7 33 (4.60%) LEMP Stack
7 33 (4.60%) RabbitMQ
8 32 (4.46%) HTML
9 28 (3.90%) CSS
10 22 (3.06%) Node.js
10 22 (3.06%) XML
11 21 (2.92%) JSON
12 17 (2.37%) XSLT
13 16 (2.23%) REST
13 16 (2.23%) RSS
14 14 (1.95%) PostGIS
15 13 (1.81%) Middleware
16 11 (1.53%) .NET
17 9 (1.25%) ActiveMQ
Miscellaneous
1 50 (6.96%) Data Centre
2 44 (6.13%) Public Cloud
3 22 (3.06%) Analytical Skills
4 20 (2.79%) Computer Science
5 16 (2.23%) Management Information System
5 16 (2.23%) Web 2.0
6 15 (2.09%) Clustering
7 14 (1.95%) Private Cloud
8 11 (1.53%) Algorithms
8 11 (1.53%) PKI
9 9 (1.25%) Visualisation
10 8 (1.11%) NHS
10 8 (1.11%) Replication
11 7 (0.97%) Embedded Systems
11 7 (0.97%) Mobile App
12 6 (0.84%) Hybrid Cloud
13 5 (0.70%) Freedom of Information
13 5 (0.70%) Freedom of Information Act
13 5 (0.70%) Hedge funds
13 5 (0.70%) User Experience
Operating Systems
1 718 (100.00%) Linux
2 331 (46.10%) Red Hat Enterprise Linux
3 250 (34.82%) Ubuntu
4 119 (16.57%) Windows
5 90 (12.53%) Unix
6 59 (8.22%) Debian
7 41 (5.71%) Windows Server
8 27 (3.76%) Fedora
9 21 (2.92%) SUSE
10 14 (1.95%) Solaris
10 14 (1.95%) Windows Server 2008
11 13 (1.81%) RancherOS
11 13 (1.81%) VyOS
12 12 (1.67%) Windows Server 2012
13 7 (0.97%) Windows Server 2003
14 6 (0.84%) CoreOS
14 6 (0.84%) Windows 2000
15 4 (0.56%) AIX
15 4 (0.56%) Apple iOS
16 3 (0.42%) Android
Processes & Methodologies
1 423 (58.91%) DevOps
2 272 (37.88%) Agile Software Development
3 242 (33.70%) Continuous Integration
4 240 (33.43%) Configuration Management
5 164 (22.84%) Scrum
6 128 (17.83%) Continuous Delivery
7 96 (13.37%) Service Management
8 82 (11.42%) Load Balancing
9 72 (10.03%) Identity Management
10 68 (9.47%) Workflow
11 63 (8.77%) Coaching
12 61 (8.50%) Open Source
13 53 (7.38%) Case Management
14 51 (7.10%) Stakeholder Management
15 46 (6.41%) ITIL
16 37 (5.15%) Migration
17 34 (4.74%) Continuous Deployment
18 33 (4.60%) Mentoring
19 31 (4.32%) Performance Tuning
20 22 (3.06%) E-Commerce
Programming Languages
1 285 (39.69%) Python
2 250 (34.82%) Ruby
3 242 (33.70%) Bash Shell
4 185 (25.77%) Java
5 136 (18.94%) Perl
6 101 (14.07%) Shell Script
7 78 (10.86%) PHP
8 69 (9.61%) JavaScript
9 61 (8.50%) SQL
10 39 (5.43%) PowerShell
11 38 (5.29%) C
12 23 (3.20%) C++
13 13 (1.81%) C#
14 11 (1.53%) Go
15 10 (1.39%) Groovy
16 9 (1.25%) Korn
17 7 (0.97%) R
18 6 (0.84%) PL/SQL
18 6 (0.84%) Scala
19 3 (0.42%) AWK
Qualifications
1 229 (31.89%) Security Cleared
2 197 (27.44%) SC Cleared
3 41 (5.71%) Degree
4 33 (4.60%) CTC Cleared
5 29 (4.04%) BPSS Clearance
6 24 (3.34%) DV Cleared
7 13 (1.81%) AWS Certification
7 13 (1.81%) VMware Certified Professional (VCP)
8 11 (1.53%) CCNP
8 11 (1.53%) Cisco Certification
9 9 (1.25%) CCNA
10 6 (0.84%) CEH
10 6 (0.84%) RHCT
11 4 (0.56%) BC Cleared
11 4 (0.56%) RHCE
12 3 (0.42%) CESG Certified Professional
12 3 (0.42%) Microsoft Certification
13 2 (0.28%) MCSE
13 2 (0.28%) RHCSA
14 1 (0.14%) MCSA
Quality Assurance & Compliance
1 33 (4.60%) QA
2 12 (1.67%) PCI DSS
3 9 (1.25%) Disclosure Scotland
4 1 (0.14%) SLA
System Software
1 268 (37.33%) Docker
2 151 (21.03%) VMware Infrastructure
3 105 (14.62%) vCloud
4 81 (11.28%) Squid
5 76 (10.58%) Postfix
6 61 (8.50%) Virtual Machines
7 47 (6.55%) Active Directory
8 32 (4.46%) Xen
9 25 (3.48%) vSphere
10 18 (2.51%) KVM
11 14 (1.95%) VMware ESXi
12 11 (1.53%) VMware Server
13 9 (1.25%) iptables
13 9 (1.25%) VirtualBox
13 9 (1.25%) VMware ESX
14 8 (1.11%) Sendmail
15 6 (0.84%) Dovecot
16 5 (0.70%) GlusterFS
17 4 (0.56%) DFS Replication
17 4 (0.56%) LXC
Systems Management
1 385 (53.62%) Puppet
2 317 (44.15%) Ansible
3 151 (21.03%) Opscode Chef
4 140 (19.50%) Terraform
5 134 (18.66%) ZABBIX
6 132 (18.38%) Kubernetes
7 118 (16.43%) Kibana
8 115 (16.02%) logstash
9 81 (11.28%) Rancher
10 72 (10.03%) Nagios
11 58 (8.08%) HAProxy
12 32 (4.46%) Packer
13 25 (3.48%) Consul
14 21 (2.92%) SELinux
15 17 (2.37%) Salt
16 15 (2.09%) SCCM
17 13 (1.81%) Grafana
17 13 (1.81%) vRealize
18 12 (1.67%) Graphite
19 10 (1.39%) Pingdom
Vendors
1 311 (43.31%) Red Hat
2 272 (37.88%) VMware
3 99 (13.79%) Atlassian
4 90 (12.53%) Oracle
5 76 (10.58%) Sonatype
6 52 (7.24%) Cisco
7 39 (5.43%) Microsoft
8 31 (4.32%) AppDynamics
8 31 (4.32%) Splunk
9 23 (3.20%) SaltStack
10 22 (3.06%) Google
11 20 (2.79%) EMC
12 19 (2.65%) New Relic
13 13 (1.81%) HP
13 13 (1.81%) Vyatta
14 11 (1.53%) PagerDuty
14 11 (1.53%) Rackspace
15 9 (1.25%) RightScale
16 8 (1.11%) Dell
16 8 (1.11%) IBM
Eastleigh, Hampshire
Opus Recruitment Solutions Ltd
Rate: Market Rates
Posted: 3 hours ago
Leeds, West Yorkshire
Experis Ltd
Rate: £400 - £450 per day
Posted: Yesterday
Surrey
Opus Recruitment Solutions Ltd
Rate: £450 - £475 per day
Posted: 5 days ago
City, London
Fruition IT Resources Limited
Rate: £400 - £490 per day
Posted: 6 days ago
West London
Reed Technology
Rate: £400 - £480 per day
Posted: 5 days ago
West London
Experis Ltd
Rate: £540.00 - £580.00 per day
Posted: 6 days ago
City, London
FT Select
Rate: From £400 to £450 per annum
Posted: 6 days ago
City, London
Ebury
Rate: £350.00 - £400.00 per day
Posted: 6 days ago