Period
to 21 June 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 21 June 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
21 Jun 2018
Same period 2017 Same period 2016
Rank 44 21 41
Rank change year-on-year -23 +20 -9
Contract jobs citing CentOS 61 36 19
As % of all contract IT jobs advertised in Croydon 5.62% 9.63% 3.58%
As % of the Operating Systems category 26.87% 36.36% 21.84%
Number of daily rates quoted 35 21 8
Croydon median daily rate £475 £463 £450
Median daily rate % change year-on-year +2.70% +2.78% +4.35%
10th Percentile £410 £375 £363
90th Percentile £545 £475 £512
South London median daily rate £498 £463 £465
% change year-on-year +7.57% -0.54% +14.46%
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 99 87
As % of all contract IT jobs advertised in Croydon 20.92% 26.47% 16.38%
Number of daily rates quoted 160 53 56
Croydon median daily rate £495 £463 £410
Median daily rate % change year-on-year +7.03% +12.80% +9.33%
10th Percentile £281 £353 £235
90th Percentile £600 £538 £497
South London median daily rate £475 £400 £410
% change year-on-year +18.75% -2.44% +26.15%
Number of hourly rates quoted 3 0 2
Croydon median hourly rate £17.50 - £14.50
South London median hourly rate £43.92 £47.67 £19.00
% change year-on-year -7.87% +150.87% -60.28%

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 21 June 2018.

Contractor daily rate histogram for CentOS in Croydon

For the 6 months to 21 June 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 61 (100.00%) Linux
2 40 (65.57%) Red Hat Enterprise Linux
3 38 (62.30%) DevOps
4 35 (57.38%) Security Cleared
5 33 (54.10%) Git (software)
5 33 (54.10%) Jenkins
6 28 (45.90%) Puppet
7 24 (39.34%) Java
8 23 (37.70%) Terraform
9 22 (36.07%) Kubernetes
9 22 (36.07%) Red Hat
9 22 (36.07%) SC Cleared
9 22 (36.07%) Maven
10 21 (34.43%) PostgreSQL
10 21 (34.43%) Continuous Integration
10 21 (34.43%) Python
10 21 (34.43%) Windows
10 21 (34.43%) Amazon AWS
11 20 (32.79%) JBoss
12 19 (31.15%) Agile Software Development
13 17 (27.87%) SQL
13 17 (27.87%) Bash Shell
13 17 (27.87%) Splunk
14 15 (24.59%) Tomcat
14 15 (24.59%) Firewall
14 15 (24.59%) VMware
15 14 (22.95%) DV Cleared
15 14 (22.95%) Unix
15 14 (22.95%) Ansible
15 14 (22.95%) Windows Server

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 (32.79%) JBoss
2 15 (24.59%) Tomcat
3 7 (11.48%) Elasticsearch
4 6 (9.84%) Apache Spark
5 5 (8.20%) Confluence
6 4 (6.56%) Apache
6 4 (6.56%) Oracle SOA Suite
7 3 (4.92%) Jetty
7 3 (4.92%) nginx
7 3 (4.92%) Oracle Self-Service HR
7 3 (4.92%) WebLogic
8 2 (3.28%) OpenStack
Applications
1 3 (4.92%) Microsoft Excel
Cloud Services
1 21 (34.43%) Amazon AWS
2 12 (19.67%) Amazon EC2
2 12 (19.67%) Virtual Private Cloud
3 8 (13.11%) Amazon ELB
3 8 (13.11%) Amazon S3
4 5 (8.20%) Microsoft Azure
5 4 (6.56%) Amazon CloudWatch
6 3 (4.92%) AWS CloudTrail
6 3 (4.92%) AWS Lambda
6 3 (4.92%) GitHub
6 3 (4.92%) Serverless
Communications & Networking
1 15 (24.59%) Firewall
2 11 (18.03%) OpenLDAP
3 4 (6.56%) SSH
4 3 (4.92%) DNS
4 3 (4.92%) Intrusion Detection
5 1 (1.64%) DHCP
5 1 (1.64%) HTTP
5 1 (1.64%) OpenVPN
5 1 (1.64%) SAN
5 1 (1.64%) VPN
Database & Business Intelligence
1 21 (34.43%) PostgreSQL
2 12 (19.67%) Amazon RDS
2 12 (19.67%) SQL Server
2 12 (19.67%) SQL Server 2016
3 9 (14.75%) Hadoop
4 7 (11.48%) HBase
5 6 (9.84%) MySQL
6 3 (4.92%) MongoDB
6 3 (4.92%) Oracle Database
7 2 (3.28%) Big Data
8 1 (1.64%) Data Warehouse
Development Applications
1 33 (54.10%) Git (software)
1 33 (54.10%) Jenkins
2 22 (36.07%) Maven
3 13 (21.31%) Vagrant
4 11 (18.03%) Sonatype Nexus
5 9 (14.75%) JIRA
6 6 (9.84%) Artifactory
7 4 (6.56%) Ant
8 3 (4.92%) Atlassian Bamboo
8 3 (4.92%) ClearCase
8 3 (4.92%) Cucumber
8 3 (4.92%) Eclipse
8 3 (4.92%) FishEye
8 3 (4.92%) Gradle
8 3 (4.92%) Hudson
8 3 (4.92%) IntelliJ
8 3 (4.92%) Mercurial
8 3 (4.92%) Poseidon for UML
8 3 (4.92%) Selenium
8 3 (4.92%) Subversion
General
1 2 (3.28%) Finance
1 2 (3.28%) Retail
Job Titles
1 28 (45.90%) DevOps Engineer
2 15 (24.59%) Linux Engineer
3 14 (22.95%) Linux/Unix DevOps
4 12 (19.67%) Administrator
4 12 (19.67%) Linux DevOps Engineer
5 11 (18.03%) Java Engineer
5 11 (18.03%) Systems Administrator
6 10 (16.39%) AWS DevOps
6 10 (16.39%) Network Engineer
7 9 (14.75%) AWS Administrator
7 9 (14.75%) AWS DevOps Engineer
7 9 (14.75%) AWS Engineer
7 9 (14.75%) Unix Administrator
8 8 (13.11%) Unix Systems Administrator
9 7 (11.48%) Infrastructure Engineer
10 6 (9.84%) Network Infrastructure Engineer
11 5 (8.20%) DV Cleared Network Engineer
12 4 (6.56%) Linux Administrator
12 4 (6.56%) Network Support
12 4 (6.56%) Network Support Engineer
Libraries, Frameworks & Software Standards
1 10 (16.39%) ActiveMQ
2 7 (11.48%) OSGi
3 6 (9.84%) Apache Camel
3 6 (9.84%) LAPP Stack
3 6 (9.84%) Node.js
4 4 (6.56%) Elastic Stack
5 3 (4.92%) AngularJS
5 3 (4.92%) GWT
5 3 (4.92%) Hibernate
5 3 (4.92%) HTML5
5 3 (4.92%) jQuery
5 3 (4.92%) JSON
5 3 (4.92%) Kafka
5 3 (4.92%) LAMP
5 3 (4.92%) LEMP Stack
5 3 (4.92%) Play Framework
5 3 (4.92%) RabbitMQ
5 3 (4.92%) React
5 3 (4.92%) Spring
5 3 (4.92%) STL
Miscellaneous
1 4 (6.56%) Freedom of Information
1 4 (6.56%) Freedom of Information Act
1 4 (6.56%) Management Information System
2 3 (4.92%) Derivative
2 3 (4.92%) User Experience
3 2 (3.28%) NHS
3 2 (3.28%) Private Cloud
4 1 (1.64%) Clustering
4 1 (1.64%) Data Centre
4 1 (1.64%) Linux Command Line
4 1 (1.64%) Public Cloud
Operating Systems
1 61 (100.00%) Linux
2 40 (65.57%) Red Hat Enterprise Linux
3 21 (34.43%) Windows
4 14 (22.95%) Unix
4 14 (22.95%) Windows Server
5 12 (19.67%) Windows 10
6 6 (9.84%) CoreOS
6 6 (9.84%) Solaris
7 5 (8.20%) Ubuntu
8 3 (4.92%) Android
8 3 (4.92%) Apple iOS
8 3 (4.92%) Debian
8 3 (4.92%) Mac OS X
9 2 (3.28%) Scientific Linux
Processes & Methodologies
1 38 (62.30%) DevOps
2 21 (34.43%) Continuous Integration
3 19 (31.15%) Agile Software Development
4 14 (22.95%) Deployment Automation
5 13 (21.31%) Scrum
6 10 (16.39%) Continuous Delivery
6 10 (16.39%) Problem-Solving
6 10 (16.39%) Release Management
7 9 (14.75%) Data Security
7 9 (14.75%) Security Management
7 9 (14.75%) User Acceptance Testing
8 5 (8.20%) Build Automation
9 4 (6.56%) Configuration Management
9 4 (6.56%) Continuous Improvement
9 4 (6.56%) Data Protection
9 4 (6.56%) Immutable Infrastructure
9 4 (6.56%) Project Management
9 4 (6.56%) Risk Management
9 4 (6.56%) SOA
10 3 (4.92%) TDD
Programming Languages
1 24 (39.34%) Java
2 21 (34.43%) Python
3 17 (27.87%) Bash Shell
3 17 (27.87%) SQL
4 10 (16.39%) Groovy
5 6 (9.84%) Ruby
6 5 (8.20%) Go
6 5 (8.20%) Perl
6 5 (8.20%) PowerShell
7 3 (4.92%) C++
7 3 (4.92%) Clojure
7 3 (4.92%) ClojureScript
7 3 (4.92%) JavaScript
7 3 (4.92%) PL/SQL
7 3 (4.92%) Scala
7 3 (4.92%) T-SQL
7 3 (4.92%) VBA
8 2 (3.28%) C
8 2 (3.28%) Erlang
Qualifications
1 35 (57.38%) Security Cleared
2 22 (36.07%) SC Cleared
3 14 (22.95%) DV Cleared
4 1 (1.64%) MCSA
4 1 (1.64%) Microsoft Certification
4 1 (1.64%) VCAP
4 1 (1.64%) VCDX
Quality Assurance & Compliance
1 4 (6.56%) QA
2 1 (1.64%) PMO
System Software
1 13 (21.31%) VMware ESXi
2 12 (19.67%) Docker
3 4 (6.56%) Active Directory
3 4 (6.56%) Squid
4 3 (4.92%) Apache ZooKeeper
4 3 (4.92%) HDFS
4 3 (4.92%) iptables
5 2 (3.28%) Snort
5 2 (3.28%) VMware Infrastructure
6 1 (1.64%) KVM
6 1 (1.64%) Postfix
6 1 (1.64%) vCloud
6 1 (1.64%) Virtual Machines
Systems Management
1 28 (45.90%) Puppet
2 23 (37.70%) Terraform
3 22 (36.07%) Kubernetes
4 14 (22.95%) Ansible
5 12 (19.67%) Consul
5 12 (19.67%) Packer
5 12 (19.67%) vCenter Server
6 11 (18.03%) ZABBIX
7 5 (8.20%) logstash
8 4 (6.56%) Kibana
8 4 (6.56%) Sysdig
9 3 (4.92%) Hadoop YARN
9 3 (4.92%) Nagios
9 3 (4.92%) Prometheus
9 3 (4.92%) rkt
9 3 (4.92%) Salt
9 3 (4.92%) yum
10 2 (3.28%) OSSEC
10 2 (3.28%) SELinux
11 1 (1.64%) Rsyslog
Vendors
1 22 (36.07%) Red Hat
2 17 (27.87%) Splunk
3 15 (24.59%) VMware
4 12 (19.67%) Cisco
4 12 (19.67%) NetApp
5 10 (16.39%) Oracle
6 6 (9.84%) Hortonworks
6 6 (9.84%) Microsoft
7 3 (4.92%) Cloudera
7 3 (4.92%) ForgeRock
7 3 (4.92%) Sybase
8 1 (1.64%) Sonatype