Period
to 23 February 2018

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 23 February 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
South London > Croydon
6 months to
23 Feb 2018
Same period 2017 Same period 2016
Rank 58 25 32
Rank change year-on-year -33 +7 +6
Contract jobs citing CentOS 36 41 18
As % of all contract IT jobs advertised in Croydon 3.42% 8.70% 4.06%
As % of the Operating Systems category 14.12% 33.33% 22.22%
Number of daily rates quoted 24 14 14
Croydon median daily rate £450 £470 £450
Median daily rate % change year-on-year -4.26% +4.44% +12.50%
10th Percentile £374 £451 £363
90th Percentile £666 £523 £488
South London median daily rate £500 £470 £438
% change year-on-year +6.38% +7.43% +26.81%
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 255 123 81
As % of all contract IT jobs advertised in Croydon 24.22% 26.11% 18.28%
Number of daily rates quoted 183 44 55
Croydon median daily rate £500 £434 £450
Median daily rate % change year-on-year +15.27% -3.61% +12.50%
10th Percentile £266 £313 £214
90th Percentile £650 £527 £500
South London median daily rate £463 £418 £350
% change year-on-year +10.78% +19.29% +2.94%
Number of hourly rates quoted 0 0 4
Croydon median hourly rate - - £13.00
South London median hourly rate £47.83 £47.00 £47.83
% change year-on-year +1.77% -1.74% +139.15%

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 23 February 2018.

Contractor daily rate histogram for CentOS in Croydon

For the 6 months to 23 February 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 Croydon region with a requirement for CentOS.

1 36 (100.00%) Linux
2 30 (83.33%) Red Hat Enterprise Linux
3 29 (80.56%) DevOps
4 25 (69.44%) Jenkins
5 24 (66.67%) Puppet
6 23 (63.89%) Security Cleared
7 22 (61.11%) Git (software)
7 22 (61.11%) Java
8 20 (55.56%) Tomcat
8 20 (55.56%) Maven
9 19 (52.78%) Red Hat
9 19 (52.78%) SC Cleared
10 17 (47.22%) PostgreSQL
11 16 (44.44%) Python
11 16 (44.44%) Ansible
12 15 (41.67%) Sonatype Nexus
13 14 (38.89%) Amazon AWS
13 14 (38.89%) JBoss
14 13 (36.11%) Bash Shell
14 13 (36.11%) ZABBIX
14 13 (36.11%) OpenLDAP
14 13 (36.11%) Kubernetes
15 12 (33.33%) Agile Software Development
15 12 (33.33%) Continuous Integration
16 11 (30.56%) Unix
17 10 (27.78%) Docker
17 10 (27.78%) logstash
18 9 (25.00%) Terraform
18 9 (25.00%) Amazon ELB
18 9 (25.00%) Amazon RDS

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 20 (55.56%) Tomcat
2 14 (38.89%) JBoss
3 7 (19.44%) Apache
3 7 (19.44%) Elasticsearch
4 4 (11.11%) Confluence
5 3 (8.33%) Apache Spark
5 3 (8.33%) nginx
5 3 (8.33%) Oracle SOA Suite
Cloud Services
1 14 (38.89%) Amazon AWS
2 9 (25.00%) Amazon EC2
2 9 (25.00%) Amazon ELB
2 9 (25.00%) Virtual Private Cloud
3 6 (16.67%) Amazon CloudWatch
3 6 (16.67%) Amazon S3
4 3 (8.33%) AWS CloudTrail
4 3 (8.33%) AWS Lambda
4 3 (8.33%) Serverless
Communications & Networking
1 13 (36.11%) OpenLDAP
2 7 (19.44%) Firewall
3 6 (16.67%) DNS
4 4 (11.11%) VPN
5 3 (8.33%) HTTP
5 3 (8.33%) OpenVPN
5 3 (8.33%) SSH
6 1 (2.78%) SAN
Database & Business Intelligence
1 17 (47.22%) PostgreSQL
2 9 (25.00%) Amazon RDS
3 7 (19.44%) Hadoop
3 7 (19.44%) HBase
4 3 (8.33%) MySQL
5 1 (2.78%) Data Warehouse
5 1 (2.78%) Redis
Development Applications
1 25 (69.44%) Jenkins
2 22 (61.11%) Git (software)
3 20 (55.56%) Maven
4 15 (41.67%) Sonatype Nexus
5 4 (11.11%) JIRA
5 4 (11.11%) Vagrant
6 3 (8.33%) Ant
6 3 (8.33%) Artifactory
6 3 (8.33%) Bitbucket
6 3 (8.33%) JUnit
6 3 (8.33%) Liquibase
6 3 (8.33%) SonarQube
7 2 (5.56%) Metasploit
General
1 1 (2.78%) Retail
Job Titles
1 22 (61.11%) DevOps Engineer
2 10 (27.78%) AWS DevOps
3 9 (25.00%) Administrator
3 9 (25.00%) Java Engineer
3 9 (25.00%) Linux Administrator
3 9 (25.00%) Linux/Unix DevOps
4 8 (22.22%) AWS DevOps Engineer
4 8 (22.22%) AWS Engineer
4 8 (22.22%) Linux DevOps Engineer
4 8 (22.22%) Linux Engineer
5 5 (13.89%) Linux Systems Administrator
5 5 (13.89%) Systems Administrator
6 4 (11.11%) Consultant
6 4 (11.11%) DevOps Consultant
6 4 (11.11%) VMWare Administrator
7 3 (8.33%) Platform Engineer
7 3 (8.33%) Unix Administrator
8 2 (5.56%) Firewall Engineer
8 2 (5.56%) Network Security Engineer
8 2 (5.56%) Security Engineer
Libraries, Frameworks & Software Standards
1 9 (25.00%) ActiveMQ
2 7 (19.44%) Apache Camel
2 7 (19.44%) LAPP Stack
3 6 (16.67%) Elastic Stack
3 6 (16.67%) OSGi
4 4 (11.11%) Web Services
5 3 (8.33%) LAMP
5 3 (8.33%) LDAP
5 3 (8.33%) LEMP Stack
5 3 (8.33%) MCollective
5 3 (8.33%) Node.js
5 3 (8.33%) REST
6 2 (5.56%) J2EE
7 1 (2.78%) RabbitMQ
Miscellaneous
1 4 (11.11%) Public Cloud
2 3 (8.33%) Linux Command Line
3 2 (5.56%) Spread Betting
4 1 (2.78%) Data Centre
4 1 (2.78%) NHS
Operating Systems
1 36 (100.00%) Linux
2 30 (83.33%) Red Hat Enterprise Linux
3 11 (30.56%) Unix
4 6 (16.67%) Ubuntu
5 5 (13.89%) Windows
5 5 (13.89%) Windows Server
6 3 (8.33%) CoreOS
7 2 (5.56%) Scientific Linux
7 2 (5.56%) Solaris
Processes & Methodologies
1 29 (80.56%) DevOps
2 12 (33.33%) Agile Software Development
2 12 (33.33%) Continuous Integration
3 7 (19.44%) Load Balancing
4 6 (16.67%) Continuous Delivery
5 5 (13.89%) Scrum
6 4 (11.11%) Dependency Injection
6 4 (11.11%) Integration Testing
6 4 (11.11%) Release Management
6 4 (11.11%) Root Cause Analysis
6 4 (11.11%) System Integration Testing
7 3 (8.33%) Coaching
7 3 (8.33%) Configuration Management
7 3 (8.33%) Continuous Improvement
7 3 (8.33%) Open Source
7 3 (8.33%) Service Management
7 3 (8.33%) SOA
8 2 (5.56%) Server Building
8 2 (5.56%) Stakeholder Management
9 1 (2.78%) Security Operations
Programming Languages
1 22 (61.11%) Java
2 16 (44.44%) Python
3 13 (36.11%) Bash Shell
4 7 (19.44%) Groovy
5 5 (13.89%) Go
6 4 (11.11%) SQL
7 3 (8.33%) Ruby
8 2 (5.56%) C
8 2 (5.56%) Erlang
8 2 (5.56%) Perl
Qualifications
1 23 (63.89%) Security Cleared
2 19 (52.78%) SC Cleared
Quality Assurance & Compliance
1 3 (8.33%) QA
2 1 (2.78%) PMO
System Software
1 10 (27.78%) Docker
2 6 (16.67%) Squid
3 5 (13.89%) VMware Infrastructure
4 3 (8.33%) HDFS
4 3 (8.33%) iptables
4 3 (8.33%) KVM
4 3 (8.33%) Postfix
4 3 (8.33%) vCloud
4 3 (8.33%) Virtual Machines
4 3 (8.33%) VMware ESXi
5 2 (5.56%) Snort
Systems Management
1 24 (66.67%) Puppet
2 16 (44.44%) Ansible
3 13 (36.11%) Kubernetes
3 13 (36.11%) ZABBIX
4 10 (27.78%) logstash
5 9 (25.00%) Terraform
6 6 (16.67%) Consul
6 6 (16.67%) Kibana
6 6 (16.67%) Packer
6 6 (16.67%) Sysdig
7 5 (13.89%) yum
8 3 (8.33%) Docker Swarm
8 3 (8.33%) Hadoop YARN
8 3 (8.33%) Nagios
8 3 (8.33%) Prometheus
8 3 (8.33%) Rancher
8 3 (8.33%) rkt
8 3 (8.33%) Rsyslog
9 2 (5.56%) OSSEC
9 2 (5.56%) SELinux
Vendors
1 19 (52.78%) Red Hat
2 8 (22.22%) VMware
3 6 (16.67%) Oracle
4 3 (8.33%) ForgeRock
4 3 (8.33%) Sonatype
5 1 (2.78%) Atlassian