Period
to 17 August 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 17 August 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
17 Aug 2018
Same period 2017 Same period 2016
Rank 74 49 57
Rank change year-on-year -25 +8 -1
Contract jobs citing CentOS 67 45 39
As % of all contract IT jobs advertised in South London 3.46% 4.52% 3.36%
As % of the Operating Systems category 15.91% 16.54% 14.50%
Number of daily rates quoted 41 29 15
South London median daily rate £500 £450 £475
Median daily rate % change year-on-year +11.11% -5.26% +16.92%
10th Percentile £388 £363 £425
90th Percentile £719 £555 £525
London median daily rate £550 £513 £500
% change year-on-year +7.32% +2.50% +17.65%
Number of hourly rates quoted 0 0 0
South London median hourly rate - - -
London median hourly rate £52.50 £40.00 -
% change year-on-year +31.25% - -

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 421 272 269
As % of all contract IT jobs advertised in South London 21.75% 27.31% 23.19%
Number of daily rates quoted 298 154 184
South London median daily rate £500 £450 £401
Median daily rate % change year-on-year +11.11% +12.15% +14.64%
10th Percentile £278 £325 £241
90th Percentile £600 £600 £525
London median daily rate £488 £475 £450
% change year-on-year +2.63% +5.56% +5.88%
Number of hourly rates quoted 29 42 7
South London median hourly rate £43.92 £47.83 £15.00
Median hourly rate % change year-on-year -8.19% +218.87% -68.64%
10th Percentile £13.60 £23.30 £12.80
90th Percentile £47.83 £52.95 £32.45
London median hourly rate £19.00 £20.00 £17.00
% change year-on-year -5.00% +17.65% -5.56%

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 17 August 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 17 August 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 -29 58 £481 +18.10%
CentOS
London

For the 6 months to 17 August 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 67 (100.00%) Linux
2 45 (67.16%) Red Hat Enterprise Linux
3 42 (62.69%) Security Cleared
4 39 (58.21%) DevOps
5 32 (47.76%) Jenkins
5 32 (47.76%) Terraform
6 30 (44.78%) Kubernetes
7 29 (43.28%) Continuous Integration
8 28 (41.79%) SC Cleared
8 28 (41.79%) Amazon AWS
8 28 (41.79%) Puppet
9 25 (37.31%) Java
10 24 (35.82%) Git (software)
11 23 (34.33%) Agile Software Development
12 22 (32.84%) Windows
13 20 (29.85%) SQL
13 20 (29.85%) Groovy
13 20 (29.85%) Docker
14 18 (26.87%) Splunk
14 18 (26.87%) Red Hat
15 17 (25.37%) Unix
16 16 (23.88%) Python
16 16 (23.88%) PostgreSQL
16 16 (23.88%) Maven
17 15 (22.39%) JBoss
17 15 (22.39%) Ansible
17 15 (22.39%) Deployment Automation
18 14 (20.90%) Windows Server
18 14 (20.90%) VMware
18 14 (20.90%) DV Cleared

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 15 (22.39%) JBoss
2 13 (19.40%) Tomcat
3 12 (17.91%) Elasticsearch
4 7 (10.45%) Apache
5 6 (8.96%) Apache Spark
6 3 (4.48%) Confluence
6 3 (4.48%) Jetty
6 3 (4.48%) OpenStack
6 3 (4.48%) Oracle Self-Service HR
6 3 (4.48%) WebLogic
7 2 (2.99%) Oracle SOA Suite
Applications
1 3 (4.48%) Microsoft Excel
Cloud Services
1 28 (41.79%) Amazon AWS
2 10 (14.93%) Amazon EC2
2 10 (14.93%) Virtual Private Cloud
3 8 (11.94%) Amazon S3
4 6 (8.96%) Microsoft Azure
5 3 (4.48%) GitHub
6 2 (2.99%) Amazon ELB
Communications & Networking
1 12 (17.91%) Firewall
2 3 (4.48%) Intrusion Detection
2 3 (4.48%) SSH
3 2 (2.99%) DHCP
3 2 (2.99%) DNS
3 2 (2.99%) OpenLDAP
4 1 (1.49%) VPN
Database & Business Intelligence
1 16 (23.88%) PostgreSQL
2 12 (17.91%) SQL Server
2 12 (17.91%) SQL Server 2016
3 10 (14.93%) Amazon RDS
4 6 (8.96%) Hadoop
5 5 (7.46%) Big Data
5 5 (7.46%) HBase
6 3 (4.48%) Apache Hive
6 3 (4.48%) MongoDB
6 3 (4.48%) MySQL
6 3 (4.48%) Oracle Database
Development Applications
1 32 (47.76%) Jenkins
2 24 (35.82%) Git (software)
3 16 (23.88%) Maven
4 13 (19.40%) Vagrant
5 8 (11.94%) JIRA
6 3 (4.48%) Ant
6 3 (4.48%) Artifactory
6 3 (4.48%) Atlassian Bamboo
6 3 (4.48%) ClearCase
6 3 (4.48%) Cucumber
6 3 (4.48%) Eclipse
6 3 (4.48%) FishEye
6 3 (4.48%) GitLab
6 3 (4.48%) Gradle
6 3 (4.48%) Hudson
6 3 (4.48%) IntelliJ
6 3 (4.48%) Mercurial
6 3 (4.48%) Poseidon for UML
6 3 (4.48%) Selenium
6 3 (4.48%) Subversion
General
1 2 (2.99%) Finance
2 1 (1.49%) Retail
Job Titles
1 29 (43.28%) DevOps Engineer
2 16 (23.88%) Administrator
3 15 (22.39%) Systems Administrator
4 14 (20.90%) AWS Administrator
4 14 (20.90%) Linux Engineer
5 13 (19.40%) Unix Administrator
6 12 (17.91%) AWS DevOps
6 12 (17.91%) Senior DevOps
6 12 (17.91%) Unix Systems Administrator
7 11 (16.42%) Linux/Unix DevOps
8 10 (14.93%) Java Engineer
8 10 (14.93%) Linux DevOps Engineer
8 10 (14.93%) Network Engineer
8 10 (14.93%) Senior DevOps Engineer
9 9 (13.43%) AWS DevOps Engineer
9 9 (13.43%) AWS Engineer
10 7 (10.45%) Kubernetes Engineer
11 6 (8.96%) Infrastructure Engineer
11 6 (8.96%) Network Infrastructure Engineer
12 5 (7.46%) Linux Administrator
Libraries, Frameworks & Software Standards
1 10 (14.93%) Web Services
2 9 (13.43%) Elastic Stack
3 7 (10.45%) LAMP
4 6 (8.96%) Kafka
5 5 (7.46%) ActiveMQ
6 3 (4.48%) AngularJS
6 3 (4.48%) Apache Camel
6 3 (4.48%) GWT
6 3 (4.48%) Hibernate
6 3 (4.48%) HTML
6 3 (4.48%) HTML5
6 3 (4.48%) JMS
6 3 (4.48%) jQuery
6 3 (4.48%) JSON
6 3 (4.48%) Node.js
6 3 (4.48%) Play Framework
6 3 (4.48%) RabbitMQ
6 3 (4.48%) Spring
6 3 (4.48%) STL
6 3 (4.48%) XML
Miscellaneous
1 7 (10.45%) Management Information System
2 6 (8.96%) Freedom of Information
2 6 (8.96%) Freedom of Information Act
3 3 (4.48%) Derivative
3 3 (4.48%) Private Cloud
3 3 (4.48%) User Experience
4 2 (2.99%) Clustering
5 1 (1.49%) NHS
5 1 (1.49%) Public Cloud
Operating Systems
1 67 (100.00%) Linux
2 45 (67.16%) Red Hat Enterprise Linux
3 22 (32.84%) Windows
4 17 (25.37%) Unix
5 14 (20.90%) Windows Server
6 12 (17.91%) Windows 10
7 6 (8.96%) Solaris
8 4 (5.97%) Ubuntu
9 3 (4.48%) Android
9 3 (4.48%) Apple iOS
9 3 (4.48%) CoreOS
9 3 (4.48%) Debian
9 3 (4.48%) Mac OS X
Processes & Methodologies
1 39 (58.21%) DevOps
2 29 (43.28%) Continuous Integration
3 23 (34.33%) Agile Software Development
4 15 (22.39%) Deployment Automation
5 13 (19.40%) Data Security
5 13 (19.40%) Security Management
5 13 (19.40%) User Acceptance Testing
6 12 (17.91%) Storage Management
7 11 (16.42%) Scrum
8 10 (14.93%) Problem-Solving
8 10 (14.93%) Release Management
9 9 (13.43%) Infrastructure Engineering
10 8 (11.94%) Continuous Delivery
11 6 (8.96%) Build Automation
11 6 (8.96%) Data Protection
11 6 (8.96%) Immutable Infrastructure
11 6 (8.96%) Project Management
11 6 (8.96%) Risk Management
12 5 (7.46%) Customer Requirements
12 5 (7.46%) Virtual Environments
Programming Languages
1 25 (37.31%) Java
2 20 (29.85%) Groovy
2 20 (29.85%) SQL
3 16 (23.88%) Python
4 14 (20.90%) Bash Shell
5 7 (10.45%) PowerShell
6 3 (4.48%) C++
6 3 (4.48%) Clojure
6 3 (4.48%) ClojureScript
6 3 (4.48%) JavaScript
6 3 (4.48%) Perl
6 3 (4.48%) PL/SQL
6 3 (4.48%) Ruby
6 3 (4.48%) Scala
6 3 (4.48%) T-SQL
6 3 (4.48%) VBA
Qualifications
1 42 (62.69%) Security Cleared
2 28 (41.79%) SC Cleared
3 14 (20.90%) DV Cleared
4 3 (4.48%) VCAP
4 3 (4.48%) VCDX
5 2 (2.99%) MCSA
5 2 (2.99%) Microsoft Certification
6 1 (1.49%) Degree
Quality Assurance & Compliance
1 2 (2.99%) QA
System Software
1 20 (29.85%) Docker
2 12 (17.91%) VMware ESXi
3 5 (7.46%) Active Directory
4 3 (4.48%) Apache ZooKeeper
5 2 (2.99%) VMware Infrastructure
Systems Management
1 32 (47.76%) Terraform
2 30 (44.78%) Kubernetes
3 28 (41.79%) Puppet
4 15 (22.39%) Ansible
5 12 (17.91%) vCenter Server
6 10 (14.93%) logstash
7 9 (13.43%) Kibana
8 8 (11.94%) Consul
8 8 (11.94%) Packer
9 3 (4.48%) Ambari
9 3 (4.48%) Salt
10 2 (2.99%) ZABBIX
Vendors
1 18 (26.87%) Red Hat
1 18 (26.87%) Splunk
2 14 (20.90%) VMware
3 12 (17.91%) Cisco
3 12 (17.91%) NetApp
4 9 (13.43%) Hortonworks
5 8 (11.94%) Microsoft
6 6 (8.96%) Cloudera
7 5 (7.46%) Oracle
8 3 (4.48%) Sybase