Period
to 18 June 2018

The following table provides summary statistics for contract job vacancies advertised in South London 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 18 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
London > South London
6 months to
18 Jun 2018
Same period 2017 Same period 2016
Rank 49 46 66
Rank change year-on-year -3 +20 -15
Contract jobs citing CentOS 75 38 22
As % of all contract IT jobs advertised in South London 4.29% 4.34% 2.01%
As % of the Operating Systems category 20.00% 15.45% 10.48%
Number of daily rates quoted 47 23 11
South London median daily rate £495 £463 £465
Median daily rate % change year-on-year +7.03% -0.54% +14.46%
10th Percentile £420 £365 £363
90th Percentile £719 £515 £525
London median daily rate £535 £500 £475
% change year-on-year +6.95% +5.26% +5.56%
Number of hourly rates quoted 0 0 0
South London median hourly rate - - -
London median hourly rate £52.50 £40.00 £50.00
% change year-on-year +31.25% -20.00% -

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 South London with a requirement for operating system skills.

All Operating Systems
South London
Contract vacancies with a requirement for operating system skills 375 246 210
As % of all contract IT jobs advertised in South London 21.44% 28.08% 19.20%
Number of daily rates quoted 253 135 153
South London median daily rate £475 £400 £410
Median daily rate % change year-on-year +18.75% -2.44% +26.15%
10th Percentile £281 £318 £250
90th Percentile £613 £561 £525
London median daily rate £488 £463 £450
% change year-on-year +5.41% +2.78% +5.88%
Number of hourly rates quoted 39 42 11
South London median hourly rate £43.92 £47.67 £19.00
Median hourly rate % change year-on-year -7.87% +150.87% -24.00%
10th Percentile £13.00 £23.75 £13.50
90th Percentile £47.83 £52.95 £47.83
London median hourly rate £19.37 £21.33 £17.00
% change year-on-year -9.18% +25.44% -8.11%

CentOS
Job Vacancy Trend in South London

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

Job vacancy trend for CentOS in South London

CentOS
Contractor Daily Rate Trend in South London

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

Contractor daily rate trend for CentOS in South London

CentOS
Contractor Daily Rate Histogram in South London

The daily rate distribution of IT jobs citing CentOS in South London over the 6 months to 18 June 2018.

Contractor daily rate histogram for CentOS in South London

CentOS
Contract Job Locations in South London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the South London region over the 6 months to 18 June 2018. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Croydon -25 62 £475 +2.70% 3
Bromley -7 3 - - 1
CentOS
London

For the 6 months to 18 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 South London region with a requirement for CentOS.

1 75 (100.00%) Linux
2 51 (68.00%) Red Hat Enterprise Linux
3 50 (66.67%) DevOps
4 45 (60.00%) Security Cleared
5 43 (57.33%) Jenkins
6 37 (49.33%) Puppet
7 35 (46.67%) Git (software)
8 33 (44.00%) Java
8 33 (44.00%) Terraform
9 32 (42.67%) SC Cleared
10 31 (41.33%) Kubernetes
11 30 (40.00%) Amazon AWS
11 30 (40.00%) Continuous Integration
12 29 (38.67%) Agile Software Development
13 26 (34.67%) Python
13 26 (34.67%) Red Hat
14 24 (32.00%) Tomcat
15 23 (30.67%) Maven
15 23 (30.67%) PostgreSQL
15 23 (30.67%) Ansible
16 22 (29.33%) Windows
17 21 (28.00%) JBoss
17 21 (28.00%) Docker
18 20 (26.67%) Splunk
18 20 (26.67%) Groovy
19 18 (24.00%) Bash Shell
20 17 (22.67%) SQL
21 16 (21.33%) Elasticsearch
22 15 (20.00%) Firewall
22 15 (20.00%) VMware

CentOS
Co-occurring IT Skills in South London 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 24 (32.00%) Tomcat
2 21 (28.00%) JBoss
3 16 (21.33%) Elasticsearch
4 12 (16.00%) Apache
5 8 (10.67%) Apache Spark
6 5 (6.67%) Confluence
7 4 (5.33%) Oracle SOA Suite
8 3 (4.00%) Jetty
8 3 (4.00%) nginx
8 3 (4.00%) Oracle Self-Service HR
8 3 (4.00%) WebLogic
9 2 (2.67%) OpenStack
Applications
1 3 (4.00%) Microsoft Excel
Cloud Services
1 30 (40.00%) Amazon AWS
2 12 (16.00%) Amazon EC2
2 12 (16.00%) Virtual Private Cloud
3 8 (10.67%) Amazon ELB
3 8 (10.67%) Amazon S3
4 5 (6.67%) Microsoft Azure
5 4 (5.33%) Amazon CloudWatch
6 3 (4.00%) AWS CloudTrail
6 3 (4.00%) AWS Lambda
6 3 (4.00%) GitHub
6 3 (4.00%) Serverless
Communications & Networking
1 15 (20.00%) Firewall
2 12 (16.00%) OpenLDAP
3 4 (5.33%) SSH
4 3 (4.00%) DNS
4 3 (4.00%) Intrusion Detection
5 1 (1.33%) DHCP
5 1 (1.33%) HTTP
5 1 (1.33%) OpenVPN
5 1 (1.33%) SAN
5 1 (1.33%) VPN
Database & Business Intelligence
1 23 (30.67%) PostgreSQL
2 12 (16.00%) Amazon RDS
2 12 (16.00%) Hadoop
2 12 (16.00%) SQL Server
2 12 (16.00%) SQL Server 2016
3 10 (13.33%) HBase
4 6 (8.00%) MySQL
5 4 (5.33%) Big Data
6 3 (4.00%) MongoDB
6 3 (4.00%) Oracle Database
7 2 (2.67%) Apache Hive
8 1 (1.33%) Data Warehouse
Development Applications
1 43 (57.33%) Jenkins
2 35 (46.67%) Git (software)
3 23 (30.67%) Maven
4 13 (17.33%) Vagrant
5 12 (16.00%) Sonatype Nexus
6 10 (13.33%) JIRA
7 6 (8.00%) Artifactory
8 4 (5.33%) Ant
9 3 (4.00%) Atlassian Bamboo
9 3 (4.00%) ClearCase
9 3 (4.00%) Cucumber
9 3 (4.00%) Eclipse
9 3 (4.00%) FishEye
9 3 (4.00%) Gradle
9 3 (4.00%) Hudson
9 3 (4.00%) IntelliJ
9 3 (4.00%) Mercurial
9 3 (4.00%) Poseidon for UML
9 3 (4.00%) Selenium
9 3 (4.00%) Subversion
General
1 2 (2.67%) Finance
1 2 (2.67%) Retail
Job Titles
1 38 (50.67%) DevOps Engineer
2 15 (20.00%) Administrator
2 15 (20.00%) Linux Engineer
3 14 (18.67%) Linux/Unix DevOps
4 12 (16.00%) Linux DevOps Engineer
4 12 (16.00%) Senior DevOps
4 12 (16.00%) Systems Administrator
5 11 (14.67%) AWS DevOps
5 11 (14.67%) Java Engineer
5 11 (14.67%) Senior DevOps Engineer
6 10 (13.33%) Network Engineer
7 9 (12.00%) AWS Administrator
7 9 (12.00%) AWS DevOps Engineer
7 9 (12.00%) AWS Engineer
7 9 (12.00%) Kubernetes Engineer
7 9 (12.00%) Unix Administrator
8 8 (10.67%) Unix Systems Administrator
9 7 (9.33%) Infrastructure Engineer
10 6 (8.00%) Network Infrastructure Engineer
11 5 (6.67%) Linux Systems Administrator
Libraries, Frameworks & Software Standards
1 13 (17.33%) Elastic Stack
2 11 (14.67%) ActiveMQ
2 11 (14.67%) LAMP
3 10 (13.33%) Web Services
4 7 (9.33%) Apache Camel
4 7 (9.33%) LAPP Stack
4 7 (9.33%) OSGi
5 6 (8.00%) Node.js
6 5 (6.67%) Kafka
7 3 (4.00%) AngularJS
7 3 (4.00%) GWT
7 3 (4.00%) Hibernate
7 3 (4.00%) HTML5
7 3 (4.00%) jQuery
7 3 (4.00%) JSON
7 3 (4.00%) LEMP Stack
7 3 (4.00%) Play Framework
7 3 (4.00%) RabbitMQ
7 3 (4.00%) React
7 3 (4.00%) Spring
Miscellaneous
1 4 (5.33%) Freedom of Information
1 4 (5.33%) Freedom of Information Act
1 4 (5.33%) Management Information System
2 3 (4.00%) Derivative
2 3 (4.00%) Linux Command Line
2 3 (4.00%) User Experience
3 2 (2.67%) NHS
3 2 (2.67%) Private Cloud
4 1 (1.33%) Clustering
4 1 (1.33%) Data Centre
4 1 (1.33%) Public Cloud
Operating Systems
1 75 (100.00%) Linux
2 51 (68.00%) Red Hat Enterprise Linux
3 22 (29.33%) Windows
4 14 (18.67%) Unix
4 14 (18.67%) Windows Server
5 12 (16.00%) Windows 10
6 7 (9.33%) Ubuntu
7 6 (8.00%) CoreOS
7 6 (8.00%) Solaris
8 3 (4.00%) Android
8 3 (4.00%) Apple iOS
8 3 (4.00%) Debian
8 3 (4.00%) Mac OS X
9 2 (2.67%) Scientific Linux
Processes & Methodologies
1 50 (66.67%) DevOps
2 30 (40.00%) Continuous Integration
3 29 (38.67%) Agile Software Development
4 14 (18.67%) Deployment Automation
4 14 (18.67%) Scrum
5 10 (13.33%) Continuous Delivery
5 10 (13.33%) Problem-Solving
5 10 (13.33%) Release Management
6 9 (12.00%) Data Security
6 9 (12.00%) Security Management
6 9 (12.00%) User Acceptance Testing
7 5 (6.67%) Build Automation
7 5 (6.67%) Immutable Infrastructure
8 4 (5.33%) Configuration Management
8 4 (5.33%) Continuous Improvement
8 4 (5.33%) Data Protection
8 4 (5.33%) Project Management
8 4 (5.33%) Risk Management
8 4 (5.33%) SOA
9 3 (4.00%) TDD
Programming Languages
1 33 (44.00%) Java
2 26 (34.67%) Python
3 20 (26.67%) Groovy
4 18 (24.00%) Bash Shell
5 17 (22.67%) SQL
6 6 (8.00%) PowerShell
6 6 (8.00%) Ruby
7 5 (6.67%) Go
7 5 (6.67%) Perl
8 3 (4.00%) C++
8 3 (4.00%) Clojure
8 3 (4.00%) ClojureScript
8 3 (4.00%) JavaScript
8 3 (4.00%) PL/SQL
8 3 (4.00%) Scala
8 3 (4.00%) T-SQL
8 3 (4.00%) VBA
9 2 (2.67%) C
9 2 (2.67%) Erlang
Qualifications
1 45 (60.00%) Security Cleared
2 32 (42.67%) SC Cleared
3 14 (18.67%) DV Cleared
4 1 (1.33%) MCSA
4 1 (1.33%) Microsoft Certification
4 1 (1.33%) VCAP
4 1 (1.33%) VCDX
Quality Assurance & Compliance
1 4 (5.33%) QA
2 1 (1.33%) PMO
System Software
1 21 (28.00%) Docker
2 13 (17.33%) VMware ESXi
3 5 (6.67%) Active Directory
4 4 (5.33%) Squid
5 3 (4.00%) Apache ZooKeeper
5 3 (4.00%) HDFS
5 3 (4.00%) iptables
6 2 (2.67%) Snort
6 2 (2.67%) VMware Infrastructure
7 1 (1.33%) KVM
7 1 (1.33%) Postfix
7 1 (1.33%) vCloud
7 1 (1.33%) Virtual Machines
Systems Management
1 37 (49.33%) Puppet
2 33 (44.00%) Terraform
3 31 (41.33%) Kubernetes
4 23 (30.67%) Ansible
5 14 (18.67%) logstash
6 13 (17.33%) Consul
6 13 (17.33%) Kibana
7 12 (16.00%) Packer
7 12 (16.00%) vCenter Server
7 12 (16.00%) ZABBIX
8 4 (5.33%) Sysdig
9 3 (4.00%) Hadoop YARN
9 3 (4.00%) Nagios
9 3 (4.00%) Prometheus
9 3 (4.00%) rkt
9 3 (4.00%) Salt
9 3 (4.00%) yum
10 2 (2.67%) Ambari
10 2 (2.67%) OSSEC
10 2 (2.67%) SELinux
Vendors
1 26 (34.67%) Red Hat
2 20 (26.67%) Splunk
3 15 (20.00%) VMware
4 12 (16.00%) Cisco
4 12 (16.00%) NetApp
5 10 (13.33%) Oracle
6 8 (10.67%) Hortonworks
7 6 (8.00%) Microsoft
8 5 (6.67%) Cloudera
9 3 (4.00%) ForgeRock
9 3 (4.00%) Sybase
10 1 (1.33%) Sonatype