Period
to 28 March 2020

The following table provides summary statistics for contract job vacancies advertised in the South East 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 28 March 2020 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
England > South East
6 months to
28 Mar 2020
Same period 2019 Same period 2018
Rank 238 323 287
Rank change year-on-year +85 -36 -47
Contract jobs citing CentOS 39 59 88
As % of all contract jobs advertised in the South East 0.40% 0.38% 0.53%
As % of the Operating Systems category 1.87% 1.71% 2.32%
Number of daily rates quoted 29 35 78
Median daily rate £475 £475 £533
Median daily rate % change year-on-year - -10.80% +12.11%
10th Percentile £377 £353 £381
90th Percentile £555 £645 £613
England median daily rate £500 £500 £475
% change year-on-year - +5.26% -
Number of hourly rates quoted 0 0 1
Median hourly rate - - £17.00
England median hourly rate £35.00 £16.86 £52.50
% change year-on-year +107.59% -67.89% +213.43%

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 the South East with a requirement for operating system skills.

All Operating Systems
South East
Contract vacancies with a requirement for operating system skills 2,090 3,447 3,797
As % of all contract IT jobs advertised in the South East 21.23% 21.99% 22.71%
Number of daily rates quoted 1,202 2,012 2,079
Median daily rate £391 £411 £400
Median daily rate % change year-on-year -4.86% +2.81% -
10th Percentile £126 £158 £144
90th Percentile £575 £575 £575
England median daily rate £425 £433 £438
% change year-on-year -1.73% -1.14% +4.17%
Number of hourly rates quoted 221 281 288
Median hourly rate £17.00 £16.00 £17.50
Median hourly rate % change year-on-year +6.25% -8.57% +9.38%
10th Percentile £12.00 £11.17 £11.17
90th Percentile £48.75 £50.00 £50.25
Median hourly rate £17.50 £17.50 £17.36
% change year-on-year - +0.79% +5.23%

CentOS
Job Vacancy Trend in the South East

Job postings citing CentOS as a proportion of all IT jobs advertised in the South East.

Job vacancy trend for CentOS in the South East

CentOS
Contractor Daily Rate Trend in the South East

3-month moving average daily rate quoted in jobs citing CentOS in the South East.

Daily rate trend for CentOS in the South East

CentOS
Daily Rate Histogram in the South East

Daily rate distribution for jobs citing CentOS in the South East over the 6 months to 28 March 2020.

Daily rate histogram for CentOS in the South East

CentOS
Contractor Hourly Rate Trend in the South East

3-month moving average hourly rates quoted in jobs citing CentOS in the South East.

Hourly rate trend for CentOS in the South East

CentOS
Contract Job Locations in the South East

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 East region over the 6 months to 28 March 2020. 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
Surrey +59 13 £475 +1.33% 5
Thames Valley +27 13 £458 +1.67% 18
Hampshire +39 12 £425 -22.73% 9
Berkshire +16 6 £458 +4.57% 13
Buckinghamshire - 6 £338 - 2
Oxfordshire +18 1 £550 -15.38% 3
Isle of Wight - 1 £450 -
CentOS
England

For the 6 months to 28 March 2020, 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 East region with a requirement for CentOS.

1 39 (100.00%) Linux
2 24 (61.54%) Jenkins
3 23 (58.97%) Python
3 23 (58.97%) Security Cleared
4 22 (56.41%) SC Cleared
5 21 (53.85%) Git (software)
6 20 (51.28%) Windows
7 18 (46.15%) Ansible
7 18 (46.15%) DevOps
8 17 (43.59%) Red Hat Enterprise Linux
9 16 (41.03%) Test Automation
10 15 (38.46%) Subversion
10 15 (38.46%) Ubuntu
10 15 (38.46%) Configuration Management
11 13 (33.33%) Docker
12 12 (30.77%) Java
13 11 (28.21%) Tomcat
13 11 (28.21%) Debian
13 11 (28.21%) Spring
13 11 (28.21%) Maven
13 11 (28.21%) Log4j
13 11 (28.21%) Continuous Integration
13 11 (28.21%) System Testing
13 11 (28.21%) FindBugs
13 11 (28.21%) Mercurial
13 11 (28.21%) RabbitMQ
13 11 (28.21%) Kubernetes
13 11 (28.21%) SonarQube
14 10 (25.64%) VMware
14 10 (25.64%) C++

CentOS
Co-occurring IT Skills in the South East 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 11 (28.21%) Tomcat
2 4 (10.26%) Confluence
3 3 (7.69%) Elasticsearch
4 2 (5.13%) IIS
4 2 (5.13%) MS Exchange
5 1 (2.56%) Apache
5 1 (2.56%) Apache Solr
5 1 (2.56%) Exchange Server 2010
5 1 (2.56%) Exchange Server 2013
5 1 (2.56%) nginx
5 1 (2.56%) OpenStack
5 1 (2.56%) SharePoint
5 1 (2.56%) Skype for Business
5 1 (2.56%) WordPress
Business Applications
1 1 (2.56%) Dynamics CRM
Cloud Services
1 7 (17.95%) AWS
1 7 (17.95%) GitHub
2 5 (12.82%) Azure
3 2 (5.13%) GCP
3 2 (5.13%) SaaS
4 1 (2.56%) Amazon EC2
4 1 (2.56%) Amazon S3
4 1 (2.56%) AWS Lambda
4 1 (2.56%) Azure Active Directory
4 1 (2.56%) Dynamics 365
4 1 (2.56%) Office 365
4 1 (2.56%) Serverless
4 1 (2.56%) Virtual Private Cloud
Communications & Networking
1 6 (15.38%) DNS
2 5 (12.82%) TCP/IP
3 3 (7.69%) BGP
3 3 (7.69%) Firewall
3 3 (7.69%) SNMP
4 2 (5.13%) DHCP
4 2 (5.13%) Reverse Proxy
4 2 (5.13%) VLAN
4 2 (5.13%) VPN
5 1 (2.56%) IPsec
5 1 (2.56%) LAN
5 1 (2.56%) Network Security
5 1 (2.56%) Remote Desktop
5 1 (2.56%) Skype
5 1 (2.56%) SSH
Database & Business Intelligence
1 6 (15.38%) PostgreSQL
2 5 (12.82%) Big Data
2 5 (12.82%) Cloudera CDH
2 5 (12.82%) Hadoop
3 4 (10.26%) MariaDB
4 3 (7.69%) MongoDB
4 3 (7.69%) MySQL
5 2 (5.13%) SQL Server
6 1 (2.56%) Amazon RDS
6 1 (2.56%) Relational Database
Development Applications
1 24 (61.54%) Jenkins
2 21 (53.85%) Git (software)
3 15 (38.46%) Subversion
4 11 (28.21%) FindBugs
4 11 (28.21%) Log4j
4 11 (28.21%) Maven
4 11 (28.21%) Mercurial
4 11 (28.21%) SonarQube
5 6 (15.38%) GitLab
5 6 (15.38%) JIRA
6 2 (5.13%) Atlassian Bamboo
7 1 (2.56%) Octopus Deploy
7 1 (2.56%) TeamCity
General
1 2 (5.13%) Marketing
1 2 (5.13%) Public Sector
2 1 (2.56%) Electronics
2 1 (2.56%) Finance
2 1 (2.56%) Manufacturing
2 1 (2.56%) Retail
2 1 (2.56%) Telecoms
Job Titles
1 14 (35.90%) DevOps Engineer
2 12 (30.77%) Developer
3 9 (23.08%) Java Developer
4 7 (17.95%) Software Developer
5 6 (15.38%) Java Software Developer
6 4 (10.26%) Linux Engineer
6 4 (10.26%) Senior DevOps
6 4 (10.26%) Senior DevOps Engineer
7 3 (7.69%) SC Cleared Java Developer
7 3 (7.69%) Software Engineer
8 2 (5.13%) Administrator
8 2 (5.13%) Infrastructure Engineer
8 2 (5.13%) IT Engineer
8 2 (5.13%) Lead DevOps
8 2 (5.13%) Linux Administrator
8 2 (5.13%) Linux DevOps Engineer
8 2 (5.13%) Linux Systems Administrator
8 2 (5.13%) Linux/Unix DevOps
8 2 (5.13%) Senior Linux Engineer
8 2 (5.13%) Systems Administrator
Libraries, Frameworks & Software Standards
1 11 (28.21%) RabbitMQ
1 11 (28.21%) Spring
2 7 (17.95%) Elastic Stack
3 4 (10.26%) REST
4 2 (5.13%) gRPC
4 2 (5.13%) HTML
4 2 (5.13%) JSON
4 2 (5.13%) Middleware
4 2 (5.13%) RESTful
4 2 (5.13%) Swagger
4 2 (5.13%) Web Services
5 1 (2.56%) .NET
5 1 (2.56%) ASP.NET
5 1 (2.56%) Classic ASP
5 1 (2.56%) CSS
5 1 (2.56%) jQuery
5 1 (2.56%) LDAP
5 1 (2.56%) LINQ
5 1 (2.56%) SOAP
5 1 (2.56%) X-Windows
Miscellaneous
1 2 (5.13%) Data Centre
2 1 (2.56%) Analytical Skills
2 1 (2.56%) CMDB
2 1 (2.56%) Self-Motivation
Operating Systems
1 39 (100.00%) Linux
2 20 (51.28%) Windows
3 17 (43.59%) Red Hat Enterprise Linux
4 15 (38.46%) Ubuntu
5 11 (28.21%) Debian
6 5 (12.82%) CoreOS
6 5 (12.82%) Windows Server
7 4 (10.26%) Windows 10
7 4 (10.26%) Windows Server 2016
8 2 (5.13%) Unix
8 2 (5.13%) VMS
8 2 (5.13%) Windows 7
8 2 (5.13%) Windows Server 2012
9 1 (2.56%) Mac OS
9 1 (2.56%) Windows Server 2008
Processes & Methodologies
1 18 (46.15%) DevOps
2 16 (41.03%) Test Automation
3 15 (38.46%) Configuration Management
4 11 (28.21%) Continuous Integration
4 11 (28.21%) System Testing
5 9 (23.08%) Scrum
6 7 (17.95%) Agile Software Development
6 7 (17.95%) ITIL
7 6 (15.38%) Open Source
7 6 (15.38%) Software Engineering
8 5 (12.82%) Project Delivery
9 4 (10.26%) Continuous Delivery
9 4 (10.26%) Kanban
9 4 (10.26%) Release Management
9 4 (10.26%) Software Delivery
10 3 (7.69%) Infrastructure as Code
11 2 (5.13%) Deployment Automation
11 2 (5.13%) Infrastructure Engineering
11 2 (5.13%) Microservices
11 2 (5.13%) Migration
Programming Languages
1 23 (58.97%) Python
2 12 (30.77%) Java
3 10 (25.64%) C++
4 7 (17.95%) Bash Shell
5 5 (12.82%) PowerShell
6 4 (10.26%) C#
6 4 (10.26%) Ruby
7 3 (7.69%) JavaScript
7 3 (7.69%) PHP
8 2 (5.13%) Go
8 2 (5.13%) Perl
8 2 (5.13%) SQL
9 1 (2.56%) Shell Script
9 1 (2.56%) TypeScript
9 1 (2.56%) VBA
9 1 (2.56%) VBScript
Qualifications
1 23 (58.97%) Security Cleared
2 22 (56.41%) SC Cleared
3 2 (5.13%) AWS Certification
4 1 (2.56%) DV Cleared
4 1 (2.56%) RHCE
System Software
1 13 (33.33%) Docker
2 4 (10.26%) VMware Infrastructure
2 4 (10.26%) vSphere
3 3 (7.69%) Active Directory
4 2 (5.13%) Virtual Machines
4 2 (5.13%) VMware ESXi
5 1 (2.56%) Hyper-V
5 1 (2.56%) KVM
5 1 (2.56%) Microsoft Virtual Server
5 1 (2.56%) Virtual Servers
Systems Management
1 18 (46.15%) Ansible
2 11 (28.21%) Kubernetes
3 8 (20.51%) Puppet
4 7 (17.95%) Terraform
5 6 (15.38%) Opscode Chef
6 4 (10.26%) ZABBIX
7 3 (7.69%) HAProxy
7 3 (7.69%) Packer
8 2 (5.13%) Grafana
8 2 (5.13%) Nagios
8 2 (5.13%) Prometheus
8 2 (5.13%) vRealize
9 1 (2.56%) cPanel
9 1 (2.56%) Kibana
9 1 (2.56%) logstash
9 1 (2.56%) WSUS
Vendors
1 10 (25.64%) VMware
2 9 (23.08%) Red Hat
3 7 (17.95%) Atlassian
4 6 (15.38%) Microsoft
5 5 (12.82%) Cloudera
5 5 (12.82%) ServiceNow
6 3 (7.69%) Dell
6 3 (7.69%) Splunk
7 2 (5.13%) EMC
8 1 (2.56%) Aerohive Networks
8 1 (2.56%) Apple
8 1 (2.56%) Cisco
8 1 (2.56%) Extreme Networks
8 1 (2.56%) Google
8 1 (2.56%) HP
8 1 (2.56%) Mapbox
8 1 (2.56%) Oracle
8 1 (2.56%) SAP
8 1 (2.56%) SolarWinds
8 1 (2.56%) Sophos