Period
to 20 January 2019

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 20 January 2019 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
20 Jan 2019
Same period 2018 Same period 2017
Rank 83 69 43
Rank change year-on-year -14 -26 +3
Contract jobs citing CentOS 41 59 51
As % of all contract IT jobs advertised in South London 2.49% 3.38% 5.39%
As % of the Operating Systems category 11.05% 13.08% 18.48%
Number of daily rates quoted 33 38 20
South London median daily rate £450 £513 £470
Median daily rate % change year-on-year -12.20% +9.04% +4.44%
10th Percentile £425 £363 £425
90th Percentile £581 £679 £523
London median daily rate £520 £500 £475
% change year-on-year +4.00% +5.26% +5.56%
Number of hourly rates quoted 0 0 0
South London median hourly rate - - -
London median hourly rate - £29.00 £16.00
% change year-on-year - +81.25% -68.00%

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 371 451 276
As % of all contract IT jobs advertised in South London 22.50% 25.85% 29.18%
Number of daily rates quoted 279 311 141
South London median daily rate £525 £475 £405
Median daily rate % change year-on-year +10.53% +17.28% +8.00%
10th Percentile £328 £200 £258
90th Percentile £625 £670 £500
London median daily rate £488 £475 £450
% change year-on-year +2.63% +5.56% +5.88%
Number of hourly rates quoted 11 26 27
South London median hourly rate £43.75 £47.83 £47.00
Median hourly rate % change year-on-year -8.53% +1.77% +27.32%
10th Percentile £26.00 £40.35 £15.00
90th Percentile £47.50 £47.83 £50.00
London median hourly rate £18.70 £18.70 £19.00
% change year-on-year - -1.58% +8.57%

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 20 January 2019.

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 20 January 2019. 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 -2 41 £450 - 2
CentOS
London

For the 6 months to 20 January 2019, 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 41 (100.00%) Linux
2 28 (68.29%) Red Hat Enterprise Linux
2 28 (68.29%) DevOps
3 27 (65.85%) Terraform
4 26 (63.41%) Amazon AWS
5 23 (56.10%) Security Cleared
6 20 (48.78%) SC Cleared
7 18 (43.90%) Docker
8 15 (36.59%) Bash Shell
8 15 (36.59%) Kubernetes
9 13 (31.71%) Puppet
9 13 (31.71%) Microsoft Azure
9 13 (31.71%) Jenkins
10 12 (29.27%) Ansible
10 12 (29.27%) Python
10 12 (29.27%) Red Hat
11 11 (26.83%) Firewall
11 11 (26.83%) Unix
11 11 (26.83%) PostgreSQL
12 10 (24.39%) Windows
12 10 (24.39%) Java
13 8 (19.51%) Git (software)
13 8 (19.51%) User Acceptance Testing
13 8 (19.51%) Data Security
13 8 (19.51%) Security Management
13 8 (19.51%) Public Cloud
13 8 (19.51%) Deployment Automation
14 7 (17.07%) Groovy
14 7 (17.07%) G Suite
14 7 (17.07%) Perl

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 4 (9.76%) Confluence
2 3 (7.32%) JBoss
2 3 (7.32%) nginx
3 2 (4.88%) Tomcat
Cloud Services
1 26 (63.41%) Amazon AWS
2 13 (31.71%) Microsoft Azure
3 7 (17.07%) G Suite
4 6 (14.63%) Amazon EC2
4 6 (14.63%) Amazon S3
4 6 (14.63%) Virtual Private Cloud
5 2 (4.88%) Azure Active Directory
Communications & Networking
1 11 (26.83%) Firewall
2 5 (12.20%) DNS
3 4 (9.76%) FTP
4 3 (7.32%) SAN
5 2 (4.88%) HTTP
5 2 (4.88%) IMAP
5 2 (4.88%) SMTP
5 2 (4.88%) TCP/IP
5 2 (4.88%) VPN
Database & Business Intelligence
1 11 (26.83%) PostgreSQL
2 6 (14.63%) Amazon RDS
3 3 (7.32%) SQL Server
4 2 (4.88%) MongoDB
5 1 (2.44%) SQL Server 2016
Development Applications
1 13 (31.71%) Jenkins
2 8 (19.51%) Git (software)
3 5 (12.20%) Artifactory
3 5 (12.20%) Maven
3 5 (12.20%) SonarQube
4 4 (9.76%) JIRA
5 3 (7.32%) Sonatype Nexus
5 3 (7.32%) Vagrant
6 2 (4.88%) Gerrit
7 1 (2.44%) Visual Studio Team System
Job Titles
1 21 (51.22%) DevOps Engineer
2 12 (29.27%) Administrator
3 11 (26.83%) Systems Administrator
4 10 (24.39%) AWS Engineer
4 10 (24.39%) Linux Administrator
5 9 (21.95%) Linux Systems Administrator
6 8 (19.51%) AWS DevOps
6 8 (19.51%) AWS DevOps Engineer
7 7 (17.07%) Linux Engineer
8 5 (12.20%) Azure DevOps
9 3 (7.32%) Java Engineer
9 3 (7.32%) Linux DevOps Engineer
9 3 (7.32%) Linux/Unix DevOps
10 2 (4.88%) Azure DevOps Engineer
10 2 (4.88%) Azure Engineer
10 2 (4.88%) Infrastructure Engineer
10 2 (4.88%) Linux Infrastructure Engineer
10 2 (4.88%) Linux Systems Engineer
10 2 (4.88%) Systems Engineer
11 1 (2.44%) Applications Developer
Libraries, Frameworks & Software Standards
1 5 (12.20%) LDAP
2 2 (4.88%) Elastic Stack
2 2 (4.88%) Web Services
2 2 (4.88%) XML
2 2 (4.88%) YAML
Miscellaneous
1 8 (19.51%) Public Cloud
2 4 (9.76%) Management Information System
3 2 (4.88%) Data Centre
4 1 (2.44%) Cloud Native
Operating Systems
1 41 (100.00%) Linux
2 28 (68.29%) Red Hat Enterprise Linux
3 11 (26.83%) Unix
4 10 (24.39%) Windows
5 6 (14.63%) Ubuntu
6 3 (7.32%) Windows Server
7 1 (2.44%) Windows 10
Processes & Methodologies
1 28 (68.29%) DevOps
2 8 (19.51%) Data Security
2 8 (19.51%) Deployment Automation
2 8 (19.51%) Security Management
2 8 (19.51%) User Acceptance Testing
3 7 (17.07%) Continuous Integration
4 5 (12.20%) Microservices
5 3 (7.32%) Agile Software Development
5 3 (7.32%) Open Source
5 3 (7.32%) Problem-Solving
5 3 (7.32%) Release Management
5 3 (7.32%) Scrum
6 2 (4.88%) Configuration Management
6 2 (4.88%) Immutable Infrastructure
6 2 (4.88%) Infrastructure Engineering
6 2 (4.88%) Integration Testing
6 2 (4.88%) Kanban
6 2 (4.88%) Load Balancing
6 2 (4.88%) Server Management
6 2 (4.88%) Ticket Management
Programming Languages
1 15 (36.59%) Bash Shell
2 12 (29.27%) Python
3 10 (24.39%) Java
4 7 (17.07%) Groovy
4 7 (17.07%) Perl
5 5 (12.20%) SQL
6 2 (4.88%) PowerShell
6 2 (4.88%) Ruby
6 2 (4.88%) Shell Script
Qualifications
1 23 (56.10%) Security Cleared
2 20 (48.78%) SC Cleared
3 2 (4.88%) DV Cleared
Quality Assurance & Compliance
1 1 (2.44%) QA
System Software
1 18 (43.90%) Docker
2 5 (12.20%) Active Directory
2 5 (12.20%) VMware Infrastructure
3 4 (9.76%) VMware ESXi
4 3 (7.32%) iptables
4 3 (7.32%) KVM
Systems Management
1 27 (65.85%) Terraform
2 15 (36.59%) Kubernetes
3 13 (31.71%) Puppet
4 12 (29.27%) Ansible
5 3 (7.32%) Nagios
5 3 (7.32%) Prometheus
5 3 (7.32%) yum
6 2 (4.88%) logstash
7 1 (2.44%) Consul
7 1 (2.44%) vCenter Server
Vendors
1 12 (29.27%) Red Hat
2 7 (17.07%) Oracle
3 6 (14.63%) VMware
4 3 (7.32%) Axway
4 3 (7.32%) MuleSoft
5 2 (4.88%) Atlassian
5 2 (4.88%) ServiceNow
6 1 (2.44%) Cisco
6 1 (2.44%) NetApp
6 1 (2.44%) Splunk