Job Vacancy Trend Daily Rate Trend Daily Rate Histogram Hourly Rate Trend Hourly Rate Histogram Job Locations Skill Sets
Period
to 28 September 2020

The following table provides summary statistics for contract job vacancies advertised in England 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 September 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
UK > England
6 months to
28 Sep 2020		 Same period 2019 Same period 2018
Rank 349 418 362
Rank change year-on-year +69 -56 -4
Contract jobs citing CentOS 126 438 654
As % of all contract jobs advertised in England 0.49% 0.55% 0.70%
As % of the Operating Systems category 2.67% 2.70% 3.36%
Number of daily rates quoted 107 268 427
Median daily rate £450 £500 £500
Median daily rate % change year-on-year -10.00% - +5.26%
10th Percentile £313 £313 £375
90th Percentile £650 £675 £600
UK median daily rate £453 £500 £500
% change year-on-year -9.50% - +5.26%
Number of hourly rates quoted 5 4 6
Median hourly rate £35.50 £25.93 £48.42
Median hourly rate % change year-on-year +36.91% -46.44% +38.33%
10th Percentile £26.46 £16.07 £28.36
90th Percentile £41.50 £35.00 £55.13
UK median hourly rate £35.50 £29.38 £48.42
% change year-on-year +20.85% -39.33% +38.33%

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 England with a requirement for operating system skills.

All Operating Systems
England
Contract vacancies with a requirement for operating system skills 4,712 16,194 19,470
As % of all contract IT jobs advertised in England 18.41% 20.36% 20.80%
Number of daily rates quoted 2,863 10,229 12,161
Median daily rate £450 £425 £438
Median daily rate % change year-on-year +5.88% -2.86% +2.94%
10th Percentile £185 £150 £175
90th Percentile £625 £625 £613
UK median daily rate £435 £425 £425
% change year-on-year +2.35% - -
Number of hourly rates quoted 279 1,040 1,378
Median hourly rate £20.00 £17.50 £17.50
Median hourly rate % change year-on-year +14.29% - -
10th Percentile £12.05 £11.17 £11.17
90th Percentile £48.29 £51.25 £47.50
Median hourly rate £20.00 £17.50 £17.00
% change year-on-year +14.29% +2.94% -2.86%

CentOS
Job Vacancy Trend in England

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

Job vacancy trend for CentOS in England

CentOS
Contractor Daily Rate Trend in England

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

Daily rate trend for CentOS in England

CentOS
Daily Rate Histogram in England

Daily rate distribution for jobs citing CentOS in England over the 6 months to 28 September 2020.

Daily rate histogram for CentOS in England

CentOS
Contractor Hourly Rate Trend in England

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

Hourly rate trend for CentOS in England

CentOS
Hourly Rate Histogram in England

Hourly rate distribution of jobs citing CentOS in England over the 6 months to 28 September 2020.

Hourly rate histogram for CentOS in England

CentOS
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the England region over the 6 months to 28 September 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
London +130 63 £450 -12.20% 17
South East +177 29 £510 +13.33% 20
South West +56 17 £650 +28.08% 14
Yorkshire +74 12 £265 -51.82% 1
North of England +70 12 £265 -47.00% 12
Midlands +57 2 £355 -15.34% 7
West Midlands +57 2 £355 -11.38% 6
CentOS
UK

For the 6 months to 28 September 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 England region with a requirement for CentOS.

1 126 (100.00%) Linux
2 85 (67.46%) Python
3 77 (61.11%) Red Hat Enterprise Linux
4 71 (56.35%) Puppet
5 70 (55.56%) Bash Shell
6 68 (53.97%) Jenkins
6 68 (53.97%) Ansible
6 68 (53.97%) DevOps
7 67 (53.17%) Docker
8 65 (51.59%) Git (software)
9 60 (47.62%) VMware
10 58 (46.03%) Agile Software Development
11 57 (45.24%) Red Hat
11 57 (45.24%) Kubernetes
12 54 (42.86%) JIRA
13 53 (42.06%) Terraform
14 50 (39.68%) Security Cleared
15 48 (38.10%) Windows
16 42 (33.33%) VMware Infrastructure
16 42 (33.33%) Continuous Integration
17 38 (30.16%) Configuration Management
17 38 (30.16%) Opscode Chef
18 36 (28.57%) Perl
19 35 (27.78%) SC Cleared
20 34 (26.98%) Packer
21 32 (25.40%) Continuous Deployment
22 30 (23.81%) Windows Server
22 30 (23.81%) GitHub
23 29 (23.02%) Splunk
23 29 (23.02%) PowerShell

CentOS
Co-occurring IT Skills in England 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 (19.05%) Confluence
2 14 (11.11%) OpenStack
3 8 (6.35%) Jupyter
3 8 (6.35%) nginx
3 8 (6.35%) Tomcat
4 7 (5.56%) Elasticsearch
5 6 (4.76%) Apache
5 6 (4.76%) JBoss
6 5 (3.97%) Jetty
6 5 (3.97%) MQSeries
6 5 (3.97%) Oracle Self-Service HR
6 5 (3.97%) Red Hat Fuse
6 5 (3.97%) WebLogic
7 1 (0.79%) Liferay
7 1 (0.79%) Mailman
7 1 (0.79%) Oracle SOA Suite
7 1 (0.79%) SAS
7 1 (0.79%) SharePoint
Applications
1 4 (3.17%) Microsoft Excel
2 1 (0.79%) Microsoft Office
Business Applications
1 5 (3.97%) Sparx Enterprise Architect
2 1 (0.79%) Remedy ITSM
Cloud Services
1 30 (23.81%) GitHub
2 28 (22.22%) AWS
3 13 (10.32%) Azure
3 13 (10.32%) OpenShift
4 12 (9.52%) Amazon EC2
5 11 (8.73%) Amazon S3
5 11 (8.73%) AWS CloudFormation
6 8 (6.35%) Amazon ECS
6 8 (6.35%) Amazon SQS
6 8 (6.35%) AWS Lambda
6 8 (6.35%) Serverless
7 4 (3.17%) Amazon EKS
7 4 (3.17%) GCP
8 3 (2.38%) G Suite
8 3 (2.38%) Google App Engine
8 3 (2.38%) PaaS
8 3 (2.38%) Route 53
9 2 (1.59%) Datadog
9 2 (1.59%) Office 365
10 1 (0.79%) OneDrive
Communications & Networking
1 28 (22.22%) Firewall
2 27 (21.43%) VLAN
3 24 (19.05%) Reverse Proxy
4 16 (12.70%) SNMP
5 9 (7.14%) DNS
6 8 (6.35%) SAN
6 8 (6.35%) SSH
7 6 (4.76%) HTTP
8 5 (3.97%) SSL
9 4 (3.17%) DHCP
9 4 (3.17%) OpenLDAP
10 3 (2.38%) SMTP
11 2 (1.59%) Fibre Channel
11 2 (1.59%) FTP
12 1 (0.79%) Cisco Firepower
12 1 (0.79%) IMAP
12 1 (0.79%) S/MIME
12 1 (0.79%) TCP/IP
12 1 (0.79%) Unified Communications
12 1 (0.79%) VSAN
Database & Business Intelligence
1 19 (15.08%) MySQL
2 17 (13.49%) Hadoop
3 14 (11.11%) SQL Server
4 12 (9.52%) Apache Accumulo
5 9 (7.14%) Amazon RDS
5 9 (7.14%) Amazon Redshift
5 9 (7.14%) MongoDB
6 8 (6.35%) MariaDB
7 7 (5.56%) Oracle Database
7 7 (5.56%) PostgreSQL
8 4 (3.17%) NoSQL
9 3 (2.38%) BigQuery
10 2 (1.59%) Amazon Aurora
10 2 (1.59%) Oracle Database 10g
10 2 (1.59%) Oracle Database 11g
10 2 (1.59%) Oracle Database 12c
10 2 (1.59%) Oracle Reports
10 2 (1.59%) Oracle9i Database
10 2 (1.59%) SQL Server 2014
11 1 (0.79%) DB2
Development Applications
1 68 (53.97%) Jenkins
2 65 (51.59%) Git (software)
3 54 (42.86%) JIRA
4 29 (23.02%) Atlassian Bamboo
5 28 (22.22%) GitLab
6 27 (21.43%) Bitbucket
7 13 (10.32%) Maven
7 13 (10.32%) Subversion
8 12 (9.52%) Artifactory
9 9 (7.14%) TeamCity
10 8 (6.35%) Cucumber
10 8 (6.35%) Sonatype Nexus
11 6 (4.76%) Ant
12 5 (3.97%) ClearCase
12 5 (3.97%) Eclipse
12 5 (3.97%) Hudson
12 5 (3.97%) IntelliJ
12 5 (3.97%) Mercurial
12 5 (3.97%) Selenium
12 5 (3.97%) Vagrant
General
1 12 (9.52%) Aerospace
2 10 (7.94%) Front Office
3 9 (7.14%) Finance
4 5 (3.97%) Public Sector
5 3 (2.38%) Police
6 2 (1.59%) Marketing
6 2 (1.59%) Telecoms
7 1 (0.79%) Back Office
7 1 (0.79%) Banking
Job Titles
1 34 (26.98%) DevOps Engineer
2 21 (16.67%) Administrator
3 18 (14.29%) Linux Administrator
4 17 (13.49%) Linux Engineer
4 17 (13.49%) Systems Administrator
5 15 (11.90%) Linux Systems Administrator
6 14 (11.11%) Infrastructure Engineer
7 13 (10.32%) AWS Engineer
8 12 (9.52%) AWS DevOps
8 12 (9.52%) AWS DevOps Engineer
8 12 (9.52%) Systems Administration Leader
9 10 (7.94%) Developer
10 9 (7.14%) Consultant
10 9 (7.14%) Python Engineer
11 8 (6.35%) Linux/Unix DevOps
12 7 (5.56%) Linux DevOps Engineer
13 6 (4.76%) Architect
13 6 (4.76%) Platform Engineer
13 6 (4.76%) Systems Engineer
14 5 (3.97%) Solutions Architect
Libraries, Frameworks & Software Standards
1 19 (15.08%) REST
2 17 (13.49%) RESTful
3 16 (12.70%) Kafka
3 16 (12.70%) Swagger
4 15 (11.90%) Elastic Stack
5 14 (11.11%) gRPC
6 12 (9.52%) Apache NiFi
7 10 (7.94%) HTML
7 10 (7.94%) jQuery
8 9 (7.14%) Web Services
9 8 (6.35%) LDAP
9 8 (6.35%) Software Packaging
10 7 (5.56%) RabbitMQ
10 7 (5.56%) React
11 6 (4.76%) Node.js
12 5 (3.97%) AngularJS
12 5 (3.97%) Apache Camel
12 5 (3.97%) HTML5
12 5 (3.97%) JMS
12 5 (3.97%) Play Framework
Miscellaneous
1 13 (10.32%) Derivative
1 13 (10.32%) PKI
2 11 (8.73%) Clustering
3 8 (6.35%) Equities
3 8 (6.35%) Fixed Income
4 7 (5.56%) Private Cloud
5 5 (3.97%) Analytical Skills
5 5 (3.97%) Data Centre
5 5 (3.97%) Linux Command Line
5 5 (3.97%) User Experience
6 4 (3.17%) Public Cloud
7 3 (2.38%) Management Information System
8 2 (1.59%) NHS
8 2 (1.59%) Self-Motivation
9 1 (0.79%) Analytical Mindset
9 1 (0.79%) Cloud Native
9 1 (0.79%) e-Health
9 1 (0.79%) Greenfield Project
9 1 (0.79%) Replication
9 1 (0.79%) Thin Client
Operating Systems
1 126 (100.00%) Linux
2 77 (61.11%) Red Hat Enterprise Linux
3 48 (38.10%) Windows
4 30 (23.81%) Windows Server
5 26 (20.63%) Ubuntu
6 25 (19.84%) Windows 10
6 25 (19.84%) Windows Server 2016
7 21 (16.67%) Debian
8 12 (9.52%) Solaris
9 9 (7.14%) SUSE Linux Enterprise Server
9 9 (7.14%) Unix
10 5 (3.97%) Android
10 5 (3.97%) Apple iOS
10 5 (3.97%) Mac OS X
11 4 (3.17%) CoreOS
12 3 (2.38%) Fedora
12 3 (2.38%) Windows Server 2012
13 2 (1.59%) SUSE
14 1 (0.79%) Mac OS X Server
14 1 (0.79%) Oracle Linux
Processes & Methodologies
1 68 (53.97%) DevOps
2 58 (46.03%) Agile Software Development
3 42 (33.33%) Continuous Integration
4 38 (30.16%) Configuration Management
5 32 (25.40%) Continuous Deployment
6 25 (19.84%) Infrastructure as Code
6 25 (19.84%) Scrum
7 22 (17.46%) Microservices
8 21 (16.67%) Continuous Delivery
8 21 (16.67%) Deployment Automation
8 21 (16.67%) Systems Engineering
9 18 (14.29%) Infrastructure Automation
10 14 (11.11%) Asset Management
10 14 (11.11%) Open Source
11 13 (10.32%) Incident Management
11 13 (10.32%) Technical Leadership
12 12 (9.52%) Infrastructure Engineering
13 9 (7.14%) Decision-Making
14 8 (6.35%) Kanban
14 8 (6.35%) Software Engineering
Programming Languages
1 85 (67.46%) Python
2 70 (55.56%) Bash Shell
3 36 (28.57%) Perl
4 29 (23.02%) PowerShell
5 22 (17.46%) Java
6 18 (14.29%) Go
7 17 (13.49%) C#
8 14 (11.11%) Shell Script
9 12 (9.52%) JavaScript
9 12 (9.52%) SQL
10 11 (8.73%) Ruby
11 7 (5.56%) Groovy
11 7 (5.56%) PL/SQL
11 7 (5.56%) T-SQL
12 5 (3.97%) C++
12 5 (3.97%) Clojure
12 5 (3.97%) ClojureScript
12 5 (3.97%) PHP
12 5 (3.97%) Scala
13 4 (3.17%) Korn
Qualifications
1 50 (39.68%) Security Cleared
2 35 (27.78%) SC Cleared
3 13 (10.32%) DV Cleared
4 4 (3.17%) Degree
5 3 (2.38%) RHCE
5 3 (2.38%) RHCSA
6 2 (1.59%) MCSE
6 2 (1.59%) Microsoft Certification
6 2 (1.59%) VMware Certified Professional (VCP)
7 1 (0.79%) CAPM
7 1 (0.79%) PMI Certification
Quality Assurance & Compliance
1 5 (3.97%) SLA
2 3 (2.38%) Government Security Classifications
3 2 (1.59%) QA
4 1 (0.79%) ISO 9001
4 1 (0.79%) ISO/IEC 27001
4 1 (0.79%) PCI DSS
4 1 (0.79%) Sarbanes-Oxley
System Software
1 67 (53.17%) Docker
2 42 (33.33%) VMware Infrastructure
3 25 (19.84%) vSphere
4 24 (19.05%) Active Directory
5 12 (9.52%) Apache ZooKeeper
6 10 (7.94%) VMware ESXi
7 3 (2.38%) Gluster
7 3 (2.38%) KVM
7 3 (2.38%) Oracle RAC
7 3 (2.38%) Virtual Desktop
7 3 (2.38%) Virtual Machines
8 2 (1.59%) Xen
8 2 (1.59%) XenApp
8 2 (1.59%) XenDesktop
9 1 (0.79%) Firmware
9 1 (0.79%) GlusterFS
9 1 (0.79%) Hyper-V
9 1 (0.79%) oVirt
9 1 (0.79%) VMware NSX
Systems Management
1 71 (56.35%) Puppet
2 68 (53.97%) Ansible
3 57 (45.24%) Kubernetes
4 53 (42.06%) Terraform
5 38 (30.16%) Opscode Chef
6 34 (26.98%) Packer
7 17 (13.49%) Grafana
7 17 (13.49%) Prometheus
8 14 (11.11%) ZABBIX
9 11 (8.73%) Consul
10 8 (6.35%) Red Hat Satellite
11 5 (3.97%) Salt
12 4 (3.17%) Nagios
13 2 (1.59%) Data Guard
13 2 (1.59%) NetBackup
13 2 (1.59%) Oracle RMAN
13 2 (1.59%) Rundeck
13 2 (1.59%) yum
14 1 (0.79%) Docker Swarm
14 1 (0.79%) Single Sign-On
Vendors
1 60 (47.62%) VMware
2 57 (45.24%) Red Hat
3 29 (23.02%) Splunk
4 25 (19.84%) Dell
5 23 (18.25%) Atlassian
6 14 (11.11%) EMC
7 13 (10.32%) HP
8 11 (8.73%) Cisco
8 11 (8.73%) Microsoft
8 11 (8.73%) Oracle
9 9 (7.14%) NetApp
10 7 (5.56%) Sybase
11 6 (4.76%) Axway
11 6 (4.76%) CheckPoint
12 5 (3.97%) Cloudera
12 5 (3.97%) Hortonworks
12 5 (3.97%) MuleSoft
12 5 (3.97%) Sparx
13 3 (2.38%) Google
13 3 (2.38%) Sophos