The table below looks at the statistics for CentOS skills in IT contracts advertised for the Croydon region. Included is a guide to the contractor rates offered in IT contracts that have cited CentOS over the 3 months to 22 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
22 Jan 2017
Same period 2016 Same period 2015
CentOS Linux
London / Croydon
Rank 30 27 20
Rank change year-on-year
-3 -7
Contract jobs citing CentOS 9 3 1
As % of all contract IT jobs located in Croydon 4.04% 1.39% 0.97%
As % of the Operating Systems category 16.36% 9.68% 3.13%
Number of daily rates quoted 5 3 1
Median daily rate £468 £425 £400
Median daily rate % change year-on-year
+10.00% +6.25%
UK excluding London median daily rate £450 £450 £350
% change year-on-year
- +28.57%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
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 in the Croydon region.

Operating Systems Category
Croydon
Contract IT job ads with a match in the
Operating Systems category
55 31 32
As % of all contract IT jobs located in Croydon 24.66% 14.35% 31.07%
Number of daily rates quoted 12 20 19
Median daily rate £463 £375 £450
Median daily rate % change year-on-year
+23.33% -16.66%
90% offered a daily rate of more than £325 £135 £125
10% offered a daily rate of more than £470 £500 £495
UK excluding London median daily rate £350 £350 £325
% change year-on-year
- +7.69%
Number of hourly rates quoted 0 2 7
Median hourly rate - £13.50 £25.00
Median hourly rate % change year-on-year
- -46.00%
UK excluding London median hourly rate £16.50 £17.00 £16.00
% change year-on-year
-2.94% +6.25%

CentOS
Jobs Demand Trend in Croydon

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

CentOS Jobs Demand Trend in Croydon

CentOS
Daily Rate Trend in Croydon

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

CentOS Daily Rate Trend in Croydon

CentOS
Top 30 Related IT Skills in Croydon

For the 6 months to 22 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 across the Croydon region with a requirement for CentOS.

1 48 (100.00%) Linux
2 46 (95.83%) Security Cleared
3 43 (89.58%) SC Cleared
4 34 (70.83%) DevOps
5 33 (68.75%) PostgreSQL
5 33 (68.75%) Agile Software Development
6 29 (60.42%) VMware
6 29 (60.42%) JIRA
6 29 (60.42%) Puppet
7 28 (58.33%) Confluence
7 28 (58.33%) Scrum
8 27 (56.25%) Continuous Integration
8 27 (56.25%) Jenkins
9 26 (54.17%) Ansible
9 26 (54.17%) JIRA Agile
10 25 (52.08%) Docker
10 25 (52.08%) Amazon AWS
10 25 (52.08%) Workflow
10 25 (52.08%) DNS
11 24 (50.00%) Kubernetes
11 24 (50.00%) Terraform
12 21 (43.75%) Apache
12 21 (43.75%) Git (software)
13 20 (41.67%) ZABBIX
13 20 (41.67%) Atlassian
13 20 (41.67%) Continuous Delivery
14 19 (39.58%) ELK Stack
14 19 (39.58%) Hadoop
14 19 (39.58%) logstash
14 19 (39.58%) Kibana

CentOS
Top Related IT Skills in Croydon 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 28 (58.33%) Confluence
2 21 (43.75%) Apache
3 18 (37.50%) Elasticsearch
4 9 (18.75%) nginx
5 2 (4.17%) Jetty
5 2 (4.17%) Tomcat
5 2 (4.17%) WildFly
6 1 (2.08%) Mule ESB
Applications
1 18 (37.50%) HipChat
Cloud Services
1 25 (52.08%) Amazon AWS
2 5 (10.42%) Amazon CloudWatch
2 5 (10.42%) Amazon EC2
2 5 (10.42%) Amazon S3
2 5 (10.42%) AWS CloudTrail
2 5 (10.42%) Route 53
2 5 (10.42%) Virtual Private Cloud
Communications & Networking
1 25 (52.08%) DNS
2 18 (37.50%) OpenLDAP
2 18 (37.50%) OpenVPN
2 18 (37.50%) SSH
3 15 (31.25%) VPN
4 14 (29.17%) LDAP
5 11 (22.92%) Firewall
6 8 (16.67%) Reverse Proxy
7 7 (14.58%) IPsec
8 5 (10.42%) Cisco Nexus
9 2 (4.17%) CTI
9 2 (4.17%) DMZ
10 1 (2.08%) SNMP
Database & Business Intelligence
1 33 (68.75%) PostgreSQL
2 19 (39.58%) Hadoop
3 8 (16.67%) Oracle Database
3 8 (16.67%) Oracle Database 11g
4 5 (10.42%) Amazon RDS
5 2 (4.17%) MySQL
6 1 (2.08%) NoSQL
Development Applications
1 29 (60.42%) JIRA
2 27 (56.25%) Jenkins
3 26 (54.17%) JIRA Agile
4 21 (43.75%) Git (software)
5 19 (39.58%) Maven
6 18 (37.50%) Ant
6 18 (37.50%) JUnit
6 18 (37.50%) Liquibase
6 18 (37.50%) SonarQube
6 18 (37.50%) Sonatype Nexus
7 12 (25.00%) Bitbucket
8 2 (4.17%) Mercurial
9 1 (2.08%) Gerrit
9 1 (2.08%) GitLab
Job Titles
1 14 (29.17%) DevOps Engineer
2 11 (22.92%) Administrator
2 11 (22.92%) Consultant
3 10 (20.83%) Systems Administrator
4 6 (12.50%) AWS DevOps
4 6 (12.50%) Linux Administrator
4 6 (12.50%) Linux Systems Administrator
5 5 (10.42%) VMWare Administrator
6 4 (8.33%) DevOps Consultant
6 4 (8.33%) Linux/Unix DevOps
6 4 (8.33%) Unix Administrator
7 3 (6.25%) AWS Consultant
7 3 (6.25%) AWS Engineer
7 3 (6.25%) Cisco Administrator
7 3 (6.25%) Linux Consultant
7 3 (6.25%) Senior Linux Administrator
7 3 (6.25%) Senior Linux Systems Administrator
7 3 (6.25%) Senior Systems Administrator
7 3 (6.25%) Senior VMWare Administrator
7 3 (6.25%) Unix Systems Administrator
Libraries, Frameworks & Software Standards
1 19 (39.58%) ELK Stack
2 18 (37.50%) MCollective
2 18 (37.50%) Software Packaging
3 2 (4.17%) LAMP
3 2 (4.17%) LAPP Stack
3 2 (4.17%) LEMP Stack
4 1 (2.08%) Oracle GoldenGate
4 1 (2.08%) RabbitMQ
Miscellaneous
1 5 (10.42%) Public Cloud
2 3 (6.25%) Spread Betting
3 2 (4.17%) Freedom of Information
3 2 (4.17%) Freedom of Information Act
3 2 (4.17%) Management Information System
4 1 (2.08%) PKI
Operating Systems
1 48 (100.00%) Linux
2 18 (37.50%) Red Hat Enterprise Linux
3 16 (33.33%) Ubuntu
4 8 (16.67%) Windows
4 8 (16.67%) Windows Server
5 7 (14.58%) RancherOS
5 7 (14.58%) VyOS
6 5 (10.42%) Unix
7 3 (6.25%) Solaris
Processes & Methodologies
1 34 (70.83%) DevOps
2 33 (68.75%) Agile Software Development
3 28 (58.33%) Scrum
4 27 (56.25%) Continuous Integration
5 25 (52.08%) Workflow
6 20 (41.67%) Continuous Delivery
7 18 (37.50%) Configuration Management
7 18 (37.50%) Identity Management
7 18 (37.50%) Service Management
8 17 (35.42%) Stakeholder Management
9 11 (22.92%) Case Management
10 10 (20.83%) Coaching
11 8 (16.67%) Change Management
11 8 (16.67%) Process Management
12 7 (14.58%) Load Balancing
12 7 (14.58%) Server Building
13 5 (10.42%) Mentoring
14 3 (6.25%) Data Security
14 3 (6.25%) Project Management
14 3 (6.25%) Security Management
Programming Languages
1 18 (37.50%) Shell Script
2 16 (33.33%) Ruby
3 15 (31.25%) Bash Shell
4 8 (16.67%) Groovy
5 3 (6.25%) SQL
6 2 (4.17%) Perl
6 2 (4.17%) Python
Qualifications
1 46 (95.83%) Security Cleared
2 43 (89.58%) SC Cleared
3 10 (20.83%) CTC Cleared
4 9 (18.75%) DV Cleared
5 6 (12.50%) BPSS Clearance
6 4 (8.33%) BC Cleared
Quality Assurance & Compliance
1 2 (4.17%) QA
System Software
1 25 (52.08%) Docker
2 18 (37.50%) Postfix
2 18 (37.50%) Squid
2 18 (37.50%) vCloud
3 10 (20.83%) VMware Infrastructure
4 8 (16.67%) Active Directory
4 8 (16.67%) KVM
5 6 (12.50%) VMware ESX
6 3 (6.25%) Virtual Machines
7 2 (4.17%) VMware ESXi
7 2 (4.17%) Xen
Systems Management
1 29 (60.42%) Puppet
2 26 (54.17%) Ansible
3 24 (50.00%) Kubernetes
3 24 (50.00%) Terraform
4 20 (41.67%) ZABBIX
5 19 (39.58%) Kibana
5 19 (39.58%) logstash
6 18 (37.50%) Rancher
7 9 (18.75%) HAProxy
8 8 (16.67%) Consul
8 8 (16.67%) Packer
9 7 (14.58%) yum
10 1 (2.08%) Rsyslog
Vendors
1 29 (60.42%) VMware
2 20 (41.67%) Atlassian
3 19 (39.58%) Oracle
4 18 (37.50%) Sonatype
5 8 (16.67%) AppDynamics
5 8 (16.67%) Red Hat
6 7 (14.58%) Vyatta
7 5 (10.42%) Cisco
8 1 (2.08%) CA