Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies advertised in Croydon 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 22 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
South London > Croydon
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 56 24 26
Rank change year-on-year -32 +2 +7
Contract jobs citing CentOS 42 54 24
As % of all contract IT jobs advertised in Croydon 4.82% 10.15% 7.21%
As % of the Operating Systems category 18.50% 37.24% 23.53%
Number of daily rates quoted 27 14 14
Croydon median daily rate £400 £475 £450
Median daily rate % change year-on-year -15.79% +5.56% +12.50%
10th Percentile £363 £425 £408
90th Percentile £543 £524 £488
South London median daily rate £458 £475 £450
% change year-on-year -3.68% +5.56% +32.84%
Number of hourly rates quoted 0 0 0
Croydon median hourly rate - - -
South London median hourly rate - - -

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 Croydon with a requirement for operating system skills.

All Operating Systems
Croydon
Contract vacancies with a requirement for operating system skills 227 145 102
As % of all contract IT jobs advertised in Croydon 26.06% 27.26% 30.63%
Number of daily rates quoted 143 59 69
Croydon median daily rate £480 £425 £450
Median daily rate % change year-on-year +12.94% -5.56% +12.50%
10th Percentile £223 £313 £258
90th Percentile £581 £523 £525
South London median daily rate £475 £425 £375
% change year-on-year +11.76% +13.33% +3.45%
Number of hourly rates quoted 1 1 4
Croydon median hourly rate £13.00 £15.00 £13.00
Median hourly rate % change year-on-year -13.33% +15.38% -13.33%
South London median hourly rate £47.83 £47.83 £17.00
% change year-on-year - +181.35% +6.25%

CentOS
Job Vacancy Trend in Croydon

Job postings citing CentOS as a percentage of all IT jobs advertised in Croydon.

Job vacancy trend for CentOS in Croydon

CentOS
Contractor Daily Rate Trend in Croydon

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

Contractor daily rate trend for CentOS in Croydon

CentOS
Contractor Daily Rate Histogram in Croydon

The daily rate distribution of IT jobs citing CentOS in Croydon over the 6 months to 22 November 2017.

Contractor daily rate histogram for CentOS in Croydon

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

1 42 (100.00%) Linux
2 35 (83.33%) Security Cleared
3 32 (76.19%) SC Cleared
3 32 (76.19%) Puppet
4 27 (64.29%) VMware
5 23 (54.76%) DevOps
6 21 (50.00%) Red Hat
6 21 (50.00%) Red Hat Enterprise Linux
6 21 (50.00%) Bash Shell
7 20 (47.62%) DNS
8 19 (45.24%) VMware Infrastructure
8 19 (45.24%) Ubuntu
8 19 (45.24%) Firewall
8 19 (45.24%) Windows
8 19 (45.24%) Jenkins
8 19 (45.24%) Windows Server
9 18 (42.86%) Maven
10 17 (40.48%) Continuous Integration
10 17 (40.48%) Java
11 16 (38.10%) Git (software)
12 15 (35.71%) PostgreSQL
13 14 (33.33%) Tomcat
14 12 (28.57%) LDAP
14 12 (28.57%) VMware ESXi
14 12 (28.57%) KVM
14 12 (28.57%) Ansible
14 12 (28.57%) yum
15 11 (26.19%) Kubernetes
15 11 (26.19%) Docker
15 11 (26.19%) logstash

CentOS
Co-occurring 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 14 (33.33%) Tomcat
2 9 (21.43%) Apache
2 9 (21.43%) Elasticsearch
3 8 (19.05%) Confluence
4 7 (16.67%) JBoss
Cloud Services
1 11 (26.19%) Amazon AWS
2 8 (19.05%) Amazon CloudWatch
2 8 (19.05%) Amazon EC2
2 8 (19.05%) Amazon ELB
2 8 (19.05%) Amazon S3
2 8 (19.05%) Virtual Private Cloud
Communications & Networking
1 20 (47.62%) DNS
2 19 (45.24%) Firewall
3 12 (28.57%) LDAP
4 11 (26.19%) OpenLDAP
5 8 (19.05%) HTTP
5 8 (19.05%) OpenVPN
5 8 (19.05%) SSH
6 3 (7.14%) VPN
Database & Business Intelligence
1 15 (35.71%) PostgreSQL
2 8 (19.05%) Amazon RDS
3 1 (2.38%) Redis
Development Applications
1 19 (45.24%) Jenkins
2 18 (42.86%) Maven
3 16 (38.10%) Git (software)
4 10 (23.81%) Sonatype Nexus
5 8 (19.05%) Ant
5 8 (19.05%) Bitbucket
5 8 (19.05%) JIRA
5 8 (19.05%) JUnit
5 8 (19.05%) Liquibase
5 8 (19.05%) SonarQube
6 2 (4.76%) Vagrant
Job Titles
1 23 (54.76%) Administrator
1 23 (54.76%) Linux Administrator
2 18 (42.86%) Linux Systems Administrator
2 18 (42.86%) Systems Administrator
3 17 (40.48%) DevOps Engineer
4 15 (35.71%) VMWare Administrator
5 10 (23.81%) Linux Engineer
6 9 (21.43%) AWS DevOps
7 7 (16.67%) AWS DevOps Engineer
7 7 (16.67%) AWS Engineer
7 7 (16.67%) Linux DevOps Engineer
7 7 (16.67%) Linux/Unix DevOps
8 5 (11.90%) Java Engineer
9 3 (7.14%) Infrastructure Engineer
9 3 (7.14%) Linux Systems Engineer
9 3 (7.14%) Systems Engineer
9 3 (7.14%) Unix Administrator
10 2 (4.76%) AWS Consultant
10 2 (4.76%) Consultant
10 2 (4.76%) DevOps Consultant
Libraries, Frameworks & Software Standards
1 8 (19.05%) Elastic Stack
1 8 (19.05%) MCollective
1 8 (19.05%) REST
2 6 (14.29%) Web Services
3 5 (11.90%) ActiveMQ
4 2 (4.76%) Apache Camel
5 1 (2.38%) RabbitMQ
Miscellaneous
1 8 (19.05%) Linux Command Line
2 7 (16.67%) Spread Betting
3 3 (7.14%) Data Centre
3 3 (7.14%) Public Cloud
Operating Systems
1 42 (100.00%) Linux
2 21 (50.00%) Red Hat Enterprise Linux
3 19 (45.24%) Ubuntu
3 19 (45.24%) Windows
3 19 (45.24%) Windows Server
4 7 (16.67%) Unix
Processes & Methodologies
1 23 (54.76%) DevOps
2 17 (40.48%) Continuous Integration
3 11 (26.19%) Agile Software Development
3 11 (26.19%) Load Balancing
4 8 (19.05%) Coaching
4 8 (19.05%) Configuration Management
4 8 (19.05%) Continuous Delivery
4 8 (19.05%) Scrum
4 8 (19.05%) Service Management
4 8 (19.05%) Stakeholder Management
5 7 (16.67%) Server Building
6 3 (7.14%) Dependency Injection
6 3 (7.14%) Open Source
6 3 (7.14%) SOA
7 2 (4.76%) Integration Testing
7 2 (4.76%) Release Management
7 2 (4.76%) Root Cause Analysis
7 2 (4.76%) System Integration Testing
8 1 (2.38%) Mentoring
Programming Languages
1 21 (50.00%) Bash Shell
2 17 (40.48%) Java
3 10 (23.81%) Groovy
4 4 (9.52%) SQL
5 3 (7.14%) C
6 2 (4.76%) Python
7 1 (2.38%) Ruby
Qualifications
1 35 (83.33%) Security Cleared
2 32 (76.19%) SC Cleared
3 2 (4.76%) DV Cleared
System Software
1 19 (45.24%) VMware Infrastructure
2 12 (28.57%) KVM
2 12 (28.57%) VMware ESXi
3 11 (26.19%) Docker
3 11 (26.19%) Virtual Machines
4 8 (19.05%) Postfix
4 8 (19.05%) Squid
4 8 (19.05%) vCloud
5 3 (7.14%) iptables
Systems Management
1 32 (76.19%) Puppet
2 12 (28.57%) Ansible
2 12 (28.57%) yum
3 11 (26.19%) Kubernetes
3 11 (26.19%) logstash
4 9 (21.43%) Terraform
5 8 (19.05%) Docker Swarm
5 8 (19.05%) Kibana
5 8 (19.05%) Rancher
5 8 (19.05%) Rsyslog
5 8 (19.05%) Sysdig
5 8 (19.05%) ZABBIX
Vendors
1 27 (64.29%) VMware
2 21 (50.00%) Red Hat
3 8 (19.05%) Sonatype
4 1 (2.38%) Atlassian