Period
to 9 August 2020

The following table provides summary statistics for contract job vacancies advertised in 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 9 August 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 > London
6 months to
9 Aug 2020
Same period 2019 Same period 2018
Rank 316 446 336
Rank change year-on-year +130 -110 -39
Contract jobs citing CentOS 65 144 341
As % of all contract jobs advertised in London 0.43% 0.36% 0.74%
As % of the Operating Systems category 2.44% 1.97% 3.63%
Number of daily rates quoted 48 104 229
Median daily rate £464 £513 £550
Median daily rate % change year-on-year -9.51% -6.82% +7.32%
10th Percentile £388 £371 £400
90th Percentile £600 £656 £638
England median daily rate £510 £500 £500
% change year-on-year +2.00% - -
Number of hourly rates quoted 2 0 1
Median hourly rate £35.25 - £52.50
10th Percentile £35.03 - £51.25
90th Percentile £35.68 - £53.75
England median hourly rate £37.50 £35.00 £49.50
% change year-on-year +7.14% -29.29% +41.43%

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 London with a requirement for operating system skills.

All Operating Systems
London
Contract vacancies with a requirement for operating system skills 2,659 7,292 9,397
As % of all contract IT jobs advertised in London 17.40% 18.11% 20.52%
Number of daily rates quoted 1,776 5,127 6,678
Median daily rate £480 £475 £488
Median daily rate % change year-on-year +1.05% -2.56% +2.63%
10th Percentile £220 £175 £205
90th Percentile £652 £650 £650
England median daily rate £450 £430 £438
% change year-on-year +4.65% -1.71% +2.94%
Number of hourly rates quoted 61 200 308
Median hourly rate £35.00 £21.00 £19.00
Median hourly rate % change year-on-year +66.67% +10.53% -
10th Percentile £17.25 £12.50 £13.00
90th Percentile £50.00 £52.50 £47.83
Median hourly rate £19.50 £17.50 £17.50
% change year-on-year +11.43% - +2.94%

CentOS
Job Vacancy Trend in London

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

Job vacancy trend for CentOS in London

CentOS
Contractor Daily Rate Trend in London

3-month moving average daily rate quoted in jobs citing CentOS in London.

Daily rate trend for CentOS in London

CentOS
Daily Rate Histogram in London

Daily rate distribution for jobs citing CentOS in London over the 6 months to 9 August 2020.

Daily rate histogram for CentOS in London

CentOS
Contractor Hourly Rate Trend in London

3-month moving average hourly rates quoted in jobs citing CentOS in London.

Hourly rate trend for CentOS in London

CentOS
Contract Job Locations in 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 London region over the 6 months to 9 August 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
South London +35 11 £525 +5.00% 2
Central London +120 5 £531 - 11
CentOS
England

For the 6 months to 9 August 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 London region with a requirement for CentOS.

1 65 (100.00%) Linux
2 42 (64.62%) DevOps
3 41 (63.08%) Python
4 34 (52.31%) Jenkins
5 33 (50.77%) Git (software)
5 33 (50.77%) Bash Shell
6 32 (49.23%) Ansible
7 30 (46.15%) Agile Software Development
8 29 (44.62%) AWS
8 29 (44.62%) Red Hat Enterprise Linux
9 27 (41.54%) Docker
9 27 (41.54%) Kubernetes
10 25 (38.46%) Terraform
10 25 (38.46%) Puppet
11 24 (36.92%) Security Cleared
12 23 (35.38%) JIRA
13 22 (33.85%) SC Cleared
13 22 (33.85%) Windows
14 20 (30.77%) VMware
15 19 (29.23%) Red Hat
15 19 (29.23%) Deployment Automation
16 17 (26.15%) Ubuntu
17 16 (24.62%) Infrastructure Automation
18 15 (23.08%) Artifactory
18 15 (23.08%) Azure
19 14 (21.54%) Continuous Integration
19 14 (21.54%) JavaScript
20 13 (20.00%) Confluence
20 13 (20.00%) Packer
21 12 (18.46%) Sonatype Nexus

CentOS
Co-occurring IT Skills in 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 13 (20.00%) Confluence
2 10 (15.38%) Elasticsearch
3 7 (10.77%) Jupyter
3 7 (10.77%) nginx
4 6 (9.23%) JBoss
4 6 (9.23%) OpenStack
4 6 (9.23%) Tomcat
5 5 (7.69%) Jetty
5 5 (7.69%) MQSeries
5 5 (7.69%) Oracle Self-Service HR
5 5 (7.69%) Red Hat Fuse
5 5 (7.69%) WebLogic
6 2 (3.08%) Apache
7 1 (1.54%) Liferay
7 1 (1.54%) Mailman
7 1 (1.54%) SharePoint
Applications
1 4 (6.15%) Microsoft Excel
Business Applications
1 5 (7.69%) Sparx Enterprise Architect
Cloud Services
1 29 (44.62%) AWS
2 15 (23.08%) Azure
3 12 (18.46%) Amazon EC2
4 11 (16.92%) Amazon S3
4 11 (16.92%) OpenShift
5 10 (15.38%) Amazon ECS
5 10 (15.38%) AWS CloudFormation
6 7 (10.77%) Amazon SQS
6 7 (10.77%) AWS Lambda
6 7 (10.77%) Serverless
7 6 (9.23%) GCP
8 5 (7.69%) Amazon EKS
9 4 (6.15%) PaaS
10 3 (4.62%) Route 53
10 3 (4.62%) SonarCloud
11 1 (1.54%) Amazon CloudWatch
11 1 (1.54%) AWS CloudTrail
11 1 (1.54%) Datadog
11 1 (1.54%) GitHub
11 1 (1.54%) IaaS
Communications & Networking
1 10 (15.38%) Firewall
2 8 (12.31%) DNS
3 5 (7.69%) HTTP
3 5 (7.69%) SAN
3 5 (7.69%) SSH
3 5 (7.69%) VLAN
4 4 (6.15%) DHCP
4 4 (6.15%) OpenLDAP
4 4 (6.15%) SSL
5 3 (4.62%) Network Security
6 2 (3.08%) Reverse Proxy
6 2 (3.08%) SMTP
7 1 (1.54%) IMAP
7 1 (1.54%) S/MIME
7 1 (1.54%) SNMP
7 1 (1.54%) TCP/IP
7 1 (1.54%) Unified Communications
Database & Business Intelligence
1 9 (13.85%) MySQL
1 9 (13.85%) SQL Server
2 8 (12.31%) Amazon RDS
2 8 (12.31%) Amazon Redshift
3 6 (9.23%) Hadoop
3 6 (9.23%) MongoDB
3 6 (9.23%) PostgreSQL
4 5 (7.69%) Oracle Database
5 1 (1.54%) Amazon Aurora
5 1 (1.54%) Apache Accumulo
5 1 (1.54%) Big Data
Development Applications
1 34 (52.31%) Jenkins
2 33 (50.77%) Git (software)
3 23 (35.38%) JIRA
4 15 (23.08%) Artifactory
5 12 (18.46%) Sonatype Nexus
6 11 (16.92%) Bitbucket
6 11 (16.92%) Subversion
7 10 (15.38%) Maven
8 6 (9.23%) Ant
8 6 (9.23%) Atlassian Bamboo
8 6 (9.23%) Vagrant
9 5 (7.69%) ClearCase
9 5 (7.69%) Cucumber
9 5 (7.69%) Eclipse
9 5 (7.69%) FishEye
9 5 (7.69%) IntelliJ
9 5 (7.69%) Mercurial
9 5 (7.69%) Poseidon for UML
9 5 (7.69%) Selenium
9 5 (7.69%) TeamCity
General
1 8 (12.31%) Finance
2 7 (10.77%) Front Office
3 4 (6.15%) Public Sector
4 3 (4.62%) Police
5 1 (1.54%) Aerospace
5 1 (1.54%) Back Office
5 1 (1.54%) Banking
5 1 (1.54%) Law
Job Titles
1 19 (29.23%) DevOps Engineer
2 10 (15.38%) AWS Engineer
3 9 (13.85%) AWS DevOps
3 9 (13.85%) AWS DevOps Engineer
3 9 (13.85%) Consultant
3 9 (13.85%) Platform Engineer
4 8 (12.31%) Python Engineer
5 7 (10.77%) Cloud Engineer
5 7 (10.77%) Infrastructure Engineer
5 7 (10.77%) Linux Engineer
5 7 (10.77%) Systems Engineer
6 6 (9.23%) Architect
7 5 (7.69%) Linux Systems Engineer
7 5 (7.69%) Linux/Unix DevOps
7 5 (7.69%) Solutions Architect
8 4 (6.15%) Linux DevOps Engineer
9 3 (4.62%) .NET Developer
9 3 (4.62%) DevOps Consultant
9 3 (4.62%) Infrastructure Specialist
9 3 (4.62%) Network Engineer
Libraries, Frameworks & Software Standards
1 12 (18.46%) .NET
2 10 (15.38%) Node.js
2 10 (15.38%) RabbitMQ
3 8 (12.31%) HTML
3 8 (12.31%) jQuery
4 7 (10.77%) Web Services
5 6 (9.23%) Kafka
6 5 (7.69%) ActiveMQ
6 5 (7.69%) AngularJS
6 5 (7.69%) Apache Camel
6 5 (7.69%) Hibernate
6 5 (7.69%) JMS
6 5 (7.69%) JSON
6 5 (7.69%) LDAP
6 5 (7.69%) Middleware
6 5 (7.69%) MSMQ
6 5 (7.69%) Play Framework
6 5 (7.69%) React
6 5 (7.69%) Spring
6 5 (7.69%) XML
Miscellaneous
1 12 (18.46%) Derivative
2 7 (10.77%) Equities
2 7 (10.77%) Fixed Income
3 6 (9.23%) Clustering
4 5 (7.69%) Cloud Native
4 5 (7.69%) User Experience
5 4 (6.15%) Analytical Skills
5 4 (6.15%) Private Cloud
6 1 (1.54%) Analytical Mindset
6 1 (1.54%) Data Centre
6 1 (1.54%) Enterprise Storage
6 1 (1.54%) Greenfield Project
6 1 (1.54%) Hedge funds
6 1 (1.54%) Hybrid Cloud
6 1 (1.54%) Linux Command Line
6 1 (1.54%) NHS
6 1 (1.54%) PKI
6 1 (1.54%) Public Cloud
6 1 (1.54%) Self-Motivation
Operating Systems
1 65 (100.00%) Linux
2 29 (44.62%) Red Hat Enterprise Linux
3 22 (33.85%) Windows
4 17 (26.15%) Ubuntu
5 10 (15.38%) Debian
6 8 (12.31%) CoreOS
7 6 (9.23%) Mac OS X
8 5 (7.69%) Android
8 5 (7.69%) Apple iOS
8 5 (7.69%) SUSE Linux Enterprise Server
9 4 (6.15%) Windows Server
10 3 (4.62%) Unix
11 2 (3.08%) Windows 10
12 1 (1.54%) AIX
12 1 (1.54%) Amazon Linux
12 1 (1.54%) Mac OS
12 1 (1.54%) Solaris
12 1 (1.54%) SUSE
12 1 (1.54%) VMS
12 1 (1.54%) Windows Server 2016
Processes & Methodologies
1 42 (64.62%) DevOps
2 30 (46.15%) Agile Software Development
3 19 (29.23%) Deployment Automation
4 16 (24.62%) Infrastructure Automation
5 14 (21.54%) Continuous Integration
6 12 (18.46%) Asset Management
7 11 (16.92%) Scrum
8 8 (12.31%) Microservices
9 7 (10.77%) Continuous Delivery
9 7 (10.77%) Decision-Making
9 7 (10.77%) Software Engineering
9 7 (10.77%) Test Automation
10 6 (9.23%) Build Automation
10 6 (9.23%) Configuration Management
10 6 (9.23%) Continuous Deployment
10 6 (9.23%) Patch Management
10 6 (9.23%) Systems Engineering
10 6 (9.23%) Waterfall
11 5 (7.69%) JVM Tuning
11 5 (7.69%) The Twelve-Factor App
Programming Languages
1 41 (63.08%) Python
2 33 (50.77%) Bash Shell
3 14 (21.54%) JavaScript
4 12 (18.46%) Groovy
4 12 (18.46%) Java
5 11 (16.92%) Shell Script
6 10 (15.38%) C++
6 10 (15.38%) Perl
7 7 (10.77%) Go
7 7 (10.77%) SQL
8 6 (9.23%) Ruby
9 5 (7.69%) Clojure
9 5 (7.69%) ClojureScript
9 5 (7.69%) PL/SQL
9 5 (7.69%) Rust
9 5 (7.69%) Scala
9 5 (7.69%) T-SQL
10 4 (6.15%) VBA
11 3 (4.62%) C#
11 3 (4.62%) PowerShell
Qualifications
1 24 (36.92%) Security Cleared
2 22 (33.85%) SC Cleared
3 5 (7.69%) CCNA
3 5 (7.69%) Cisco Certification
3 5 (7.69%) Network+ Certification
4 4 (6.15%) CCENT
5 3 (4.62%) DV Cleared
6 2 (3.08%) Degree
7 1 (1.54%) CISSP
7 1 (1.54%) CompTIA Security+
7 1 (1.54%) GIAC
7 1 (1.54%) Linux+ Certification
7 1 (1.54%) MCSE
7 1 (1.54%) Microsoft Certification
7 1 (1.54%) SANS
7 1 (1.54%) SSCP
Quality Assurance & Compliance
1 4 (6.15%) NIST
2 3 (4.62%) Government Security Classifications
System Software
1 27 (41.54%) Docker
2 11 (16.92%) VMware Infrastructure
3 6 (9.23%) VMware ESXi
4 4 (6.15%) Active Directory
4 4 (6.15%) VMware NSX
5 3 (4.62%) Gluster
6 2 (3.08%) vSphere
7 1 (1.54%) Apache ZooKeeper
7 1 (1.54%) NFS
7 1 (1.54%) Samba
7 1 (1.54%) Virtual Servers
7 1 (1.54%) VirtualBox
7 1 (1.54%) Xen
Systems Management
1 32 (49.23%) Ansible
2 27 (41.54%) Kubernetes
3 25 (38.46%) Puppet
3 25 (38.46%) Terraform
4 13 (20.00%) Packer
5 11 (16.92%) Consul
5 11 (16.92%) Opscode Chef
6 5 (7.69%) logstash
6 5 (7.69%) Salt
6 5 (7.69%) vCenter Server
7 3 (4.62%) Red Hat Satellite
8 2 (3.08%) Grafana
8 2 (3.08%) Nagios
8 2 (3.08%) Prometheus
9 1 (1.54%) Docker Swarm
9 1 (1.54%) HAProxy
9 1 (1.54%) Nessus
9 1 (1.54%) OpenNMS
9 1 (1.54%) SELinux
9 1 (1.54%) ZABBIX
Vendors
1 20 (30.77%) VMware
2 19 (29.23%) Red Hat
3 11 (16.92%) Splunk
4 10 (15.38%) Axway
5 8 (12.31%) Microsoft
6 6 (9.23%) Cloudera
6 6 (9.23%) Dell
6 6 (9.23%) Hortonworks
6 6 (9.23%) HP
6 6 (9.23%) NetApp
6 6 (9.23%) Oracle
7 5 (7.69%) Cisco
7 5 (7.69%) Confluent
7 5 (7.69%) MuleSoft
7 5 (7.69%) Sparx
7 5 (7.69%) Sybase
7 5 (7.69%) Veracode
8 4 (6.15%) Palo Alto
8 4 (6.15%) Remedy
9 3 (4.62%) Sophos