Period
to 26 October 2020

The following table provides summary statistics for contract job vacancies 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 26 October 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
6 months to
26 Oct 2020
Same period 2019 Same period 2018
Rank 378 402 385
Rank change year-on-year +24 -17 +17
Contract jobs citing CentOS 153 479 673
As % of all contract jobs advertised in the UK 0.48% 0.57% 0.65%
As % of the Operating Systems category 2.58% 2.72% 3.11%
Number of daily rates quoted 138 300 447
Median daily rate £450 £500 £500
Median daily rate % change year-on-year -10.00% - +5.26%
10th Percentile £331 £313 £363
90th Percentile £600 £626 £625
UK excluding London median daily rate £475 £495 £450
% change year-on-year -4.04% +10.00% +5.88%
Number of hourly rates quoted 4 6 6
Median hourly rate £37.50 £29.38 £44.58
Median hourly rate % change year-on-year +27.66% -34.10% +35.60%
10th Percentile £35.08 £19.95 £26.32
90th Percentile £41.63 £35.00 £55.00
UK excluding London median hourly rate £39.50 £35.00 £41.83
% change year-on-year +12.86% -16.32% +19.50%

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 with a requirement for operating system skills.

All Operating Systems
UK
Contract vacancies with a requirement for operating system skills 5,920 17,600 21,672
As % of all contract IT jobs advertised in the UK 18.40% 20.87% 20.94%
Number of daily rates quoted 3,547 10,906 13,431
Median daily rate £432 £425 £425
Median daily rate % change year-on-year +1.65% - -
10th Percentile £166 £150 £163
90th Percentile £613 £613 £606
UK excluding London median daily rate £400 £400 £388
% change year-on-year - +3.23% +3.33%
Number of hourly rates quoted 358 1,251 1,522
Median hourly rate £19.95 £17.50 £17.50
Median hourly rate % change year-on-year +14.00% - -
10th Percentile £11.17 £11.24 £11.11
90th Percentile £52.65 £50.00 £47.00
Median hourly rate £17.50 £17.21 £16.50
% change year-on-year +1.69% +4.30% -1.49%

CentOS
Job Vacancy Trend

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

Job vacancy trend for CentOS in the UK

CentOS
Contractor Daily Rate Trend

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

Daily rate trend for CentOS in the UK

CentOS
Daily Rate Histogram

Daily rate distribution for jobs citing CentOS over the 6 months to 26 October 2020.

Daily rate histogram for CentOS in the UK

CentOS
Contractor Hourly Rate Trend

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

Hourly rate trend for CentOS in the UK

CentOS
Top 14 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the UK over the 6 months to 26 October 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
England +55 129 £450 -10.00% 75
UK excluding London +38 71 £475 -4.04% 50
London +123 64 £450 -14.29% 28
South East +165 34 £510 +13.33% 12
Work from Home -85 33 £450 -10.00% 11
North of England +70 15 £275 -45.00% 9
Yorkshire +72 13 £265 -51.26%
South West +70 12 £588 +27.72% 14
Scotland +18 6 £600 +11.63% 2
Midlands +53 3 £400 - 9
West Midlands +48 3 £400 - 6
North West +51 1 £400 -13.98% 9
Wales +29 1 £160 -62.35% 1
North East +23 1 £475 -4.04%

For the 6 months to 26 October 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 with a requirement for CentOS.

1 153 (100.00%) Linux
2 92 (60.13%) Python
3 89 (58.17%) Red Hat Enterprise Linux
4 84 (54.90%) DevOps
5 80 (52.29%) Puppet
6 77 (50.33%) Bash Shell
6 77 (50.33%) Ansible
6 77 (50.33%) VMware
7 73 (47.71%) Jenkins
8 71 (46.41%) Git (software)
8 71 (46.41%) Docker
8 71 (46.41%) Terraform
9 70 (45.75%) Kubernetes
10 65 (42.48%) Windows
11 61 (39.87%) Agile Software Development
12 58 (37.91%) JIRA
12 58 (37.91%) Red Hat
13 57 (37.25%) VMware Infrastructure
14 53 (34.64%) Security Cleared
15 49 (32.03%) Continuous Integration
16 48 (31.37%) Configuration Management
17 46 (30.07%) Windows Server
18 44 (28.76%) SC Cleared
19 41 (26.80%) PowerShell
20 39 (25.49%) Packer
20 39 (25.49%) Opscode Chef
21 37 (24.18%) Continuous Deployment
21 37 (24.18%) Firewall
21 37 (24.18%) Ubuntu
22 36 (23.53%) Infrastructure as Code

CentOS
Co-occurring IT Skills 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 20 (13.07%) Confluence
2 13 (8.50%) Apache
2 13 (8.50%) nginx
2 13 (8.50%) OpenStack
3 12 (7.84%) Tomcat
4 9 (5.88%) Elasticsearch
5 8 (5.23%) Jupyter
6 6 (3.92%) JBoss
7 5 (3.27%) Jetty
7 5 (3.27%) MQSeries
7 5 (3.27%) Oracle Self-Service HR
7 5 (3.27%) Red Hat Fuse
7 5 (3.27%) WebLogic
8 4 (2.61%) GlassFish
9 3 (1.96%) IIS
9 3 (1.96%) SharePoint
10 2 (1.31%) Apache Spark
10 2 (1.31%) MS Exchange
11 1 (0.65%) Alfresco
11 1 (0.65%) Liferay
Applications
1 4 (2.61%) Microsoft Excel
2 1 (0.65%) Microsoft Office
Business Applications
1 5 (3.27%) Sparx Enterprise Architect
2 1 (0.65%) Exstream
2 1 (0.65%) Remedy ITSM
Cloud Services
1 35 (22.88%) AWS
1 35 (22.88%) GitHub
2 32 (20.92%) Azure
3 14 (9.15%) Amazon S3
4 13 (8.50%) OpenShift
5 12 (7.84%) Amazon EC2
5 12 (7.84%) AWS CloudFormation
6 9 (5.88%) Amazon ECS
6 9 (5.88%) Amazon SQS
6 9 (5.88%) AWS Lambda
6 9 (5.88%) Serverless
7 7 (4.58%) Amazon EKS
7 7 (4.58%) PaaS
8 6 (3.92%) GCP
9 5 (3.27%) Azure Active Directory
9 5 (3.27%) Office 365
10 3 (1.96%) Apigee
10 3 (1.96%) G Suite
10 3 (1.96%) Google App Engine
10 3 (1.96%) Route 53
Communications & Networking
1 37 (24.18%) Firewall
2 33 (21.57%) VLAN
3 30 (19.61%) Reverse Proxy
4 19 (12.42%) SNMP
5 15 (9.80%) SAN
6 14 (9.15%) DNS
7 9 (5.88%) SSH
8 6 (3.92%) HTTP
8 6 (3.92%) LAN
8 6 (3.92%) SSL
8 6 (3.92%) WAN
9 5 (3.27%) DHCP
9 5 (3.27%) Network Security
10 4 (2.61%) OpenLDAP
11 3 (1.96%) Fibre Channel
11 3 (1.96%) NAS
11 3 (1.96%) SMTP
11 3 (1.96%) TCP/IP
11 3 (1.96%) VSAN
12 2 (1.31%) FTP
Database & Business Intelligence
1 25 (16.34%) MySQL
2 21 (13.73%) SQL Server
3 13 (8.50%) Hadoop
4 11 (7.19%) MariaDB
5 9 (5.88%) Amazon Redshift
5 9 (5.88%) MongoDB
5 9 (5.88%) Oracle Database
5 9 (5.88%) PostgreSQL
6 8 (5.23%) Amazon RDS
7 6 (3.92%) Apache Accumulo
8 4 (2.61%) NoSQL
9 3 (1.96%) Azure SQL Database
9 3 (1.96%) BigQuery
9 3 (1.96%) Cosmos DB
10 2 (1.31%) Apache Hive
10 2 (1.31%) Impala
10 2 (1.31%) InfluxDB
10 2 (1.31%) Oracle Database 11g
10 2 (1.31%) Oracle Database 12c
10 2 (1.31%) SQL Server 2014
Development Applications
1 73 (47.71%) Jenkins
2 71 (46.41%) Git (software)
3 58 (37.91%) JIRA
4 35 (22.88%) GitLab
5 34 (22.22%) Atlassian Bamboo
6 18 (11.76%) Bitbucket
7 14 (9.15%) Artifactory
7 14 (9.15%) Maven
8 11 (7.19%) Sonatype Nexus
9 10 (6.54%) TeamCity
10 9 (5.88%) Cucumber
11 8 (5.23%) Subversion
12 7 (4.58%) Ant
12 7 (4.58%) Visual Studio Team System
13 6 (3.92%) Gradle
13 6 (3.92%) Selenium
14 5 (3.27%) FishEye
14 5 (3.27%) Hudson
14 5 (3.27%) Leiningen
14 5 (3.27%) Vagrant
General
1 15 (9.80%) Public Sector
2 11 (7.19%) Finance
3 10 (6.54%) Front Office
4 6 (3.92%) Aerospace
5 4 (2.61%) Telecoms
6 3 (1.96%) Police
7 2 (1.31%) Marketing
8 1 (0.65%) Advertising
8 1 (0.65%) Back Office
8 1 (0.65%) Banking
Job Titles
1 46 (30.07%) DevOps Engineer
2 25 (16.34%) Linux Engineer
3 18 (11.76%) Infrastructure Engineer
4 17 (11.11%) Administrator
5 14 (9.15%) Systems Administrator
6 13 (8.50%) Linux Administrator
7 12 (7.84%) AWS DevOps
7 12 (7.84%) AWS DevOps Engineer
7 12 (7.84%) AWS Engineer
7 12 (7.84%) Developer
8 11 (7.19%) Linux Systems Administrator
8 11 (7.19%) Linux/Unix DevOps
9 10 (6.54%) Linux DevOps Engineer
10 9 (5.88%) Cloud Engineer
10 9 (5.88%) Consultant
10 9 (5.88%) Python Engineer
11 8 (5.23%) Azure Engineer
11 8 (5.23%) Systems Engineer
12 7 (4.58%) Migration Engineer
12 7 (4.58%) Windows Engineer
Libraries, Frameworks & Software Standards
1 23 (15.03%) REST
2 20 (13.07%) Elastic Stack
2 20 (13.07%) RESTful
3 19 (12.42%) Swagger
4 17 (11.11%) gRPC
5 12 (7.84%) HTML
5 12 (7.84%) jQuery
5 12 (7.84%) Kafka
5 12 (7.84%) Web Services
6 11 (7.19%) Node.js
7 10 (6.54%) LDAP
7 10 (6.54%) Software Packaging
8 9 (5.88%) React
9 8 (5.23%) RabbitMQ
10 7 (4.58%) .NET
10 7 (4.58%) Anaconda
10 7 (4.58%) Spring
11 6 (3.92%) AngularJS
11 6 (3.92%) Apache NiFi
12 5 (3.27%) HTML5
Miscellaneous
1 13 (8.50%) Derivative
2 10 (6.54%) PKI
3 9 (5.88%) Data Centre
4 8 (5.23%) Equities
4 8 (5.23%) Fixed Income
4 8 (5.23%) Private Cloud
5 7 (4.58%) Self-Motivation
6 6 (3.92%) Analytical Skills
6 6 (3.92%) Cloud Native
6 6 (3.92%) Clustering
7 5 (3.27%) Linux Command Line
7 5 (3.27%) User Experience
8 4 (2.61%) Public Cloud
9 3 (1.96%) Hybrid Cloud
10 2 (1.31%) Management Information System
10 2 (1.31%) RSA SecurID
10 2 (1.31%) Video Conferencing
11 1 (0.65%) e-Health
11 1 (0.65%) Fat Client
11 1 (0.65%) Replication
Operating Systems
1 153 (100.00%) Linux
2 89 (58.17%) Red Hat Enterprise Linux
3 65 (42.48%) Windows
4 46 (30.07%) Windows Server
5 37 (24.18%) Ubuntu
6 32 (20.92%) Windows Server 2016
7 30 (19.61%) Windows 10
8 24 (15.69%) Debian
9 19 (12.42%) Solaris
10 14 (9.15%) Unix
11 9 (5.88%) SUSE Linux Enterprise Server
12 6 (3.92%) CoreOS
13 5 (3.27%) Android
13 5 (3.27%) Apple iOS
13 5 (3.27%) Mac OS X
13 5 (3.27%) Windows Server 2012
14 4 (2.61%) Fedora
14 4 (2.61%) SUSE
14 4 (2.61%) VMS
15 3 (1.96%) Windows Server 2008
Processes & Methodologies
1 84 (54.90%) DevOps
2 61 (39.87%) Agile Software Development
3 49 (32.03%) Continuous Integration
4 48 (31.37%) Configuration Management
5 37 (24.18%) Continuous Deployment
6 36 (23.53%) Infrastructure as Code
7 29 (18.95%) Microservices
8 25 (16.34%) Infrastructure Automation
9 24 (15.69%) Continuous Delivery
10 23 (15.03%) Systems Engineering
11 21 (13.73%) Scrum
12 20 (13.07%) Infrastructure Engineering
13 18 (11.76%) Deployment Automation
14 17 (11.11%) Migration
15 14 (9.15%) Asset Management
16 11 (7.19%) Decision-Making
16 11 (7.19%) Performance Tuning
16 11 (7.19%) Problem-Solving
17 10 (6.54%) Kanban
18 9 (5.88%) Software Engineering
Programming Languages
1 92 (60.13%) Python
2 77 (50.33%) Bash Shell
3 41 (26.80%) PowerShell
4 32 (20.92%) Perl
5 26 (16.99%) Go
6 21 (13.73%) C#
6 21 (13.73%) Java
7 18 (11.76%) JavaScript
8 17 (11.11%) SQL
9 13 (8.50%) Ruby
10 11 (7.19%) Shell Script
11 7 (4.58%) Groovy
11 7 (4.58%) PL/SQL
11 7 (4.58%) T-SQL
12 6 (3.92%) PHP
13 5 (3.27%) C++
13 5 (3.27%) Clojure
13 5 (3.27%) ClojureScript
13 5 (3.27%) Scala
14 4 (2.61%) Rust
Qualifications
1 53 (34.64%) Security Cleared
2 44 (28.76%) SC Cleared
3 7 (4.58%) DV Cleared
4 4 (2.61%) VMware Certified Professional (VCP)
5 3 (1.96%) CCNA
5 3 (1.96%) CCNP
5 3 (1.96%) Cisco Certification
5 3 (1.96%) Degree
6 2 (1.31%) MCSE
6 2 (1.31%) Microsoft Certification
7 1 (0.65%) AWS Certification
7 1 (0.65%) CAPM
7 1 (0.65%) PMI Certification
7 1 (0.65%) RHCE
7 1 (0.65%) RHCSA
Quality Assurance & Compliance
1 8 (5.23%) SLA
2 4 (2.61%) Government Security Classifications
3 2 (1.31%) QA
4 1 (0.65%) ISO 9001
4 1 (0.65%) ISO/IEC 27001
4 1 (0.65%) PCI DSS
4 1 (0.65%) Sarbanes-Oxley
System Software
1 71 (46.41%) Docker
2 57 (37.25%) VMware Infrastructure
3 34 (22.22%) vSphere
4 32 (20.92%) Active Directory
5 15 (9.80%) VMware ESXi
6 10 (6.54%) Virtual Machines
7 6 (3.92%) Apache ZooKeeper
8 4 (2.61%) Virtual Desktop
9 3 (1.96%) Firmware
9 3 (1.96%) Gluster
9 3 (1.96%) Hyper-V
9 3 (1.96%) KVM
9 3 (1.96%) Oracle RAC
9 3 (1.96%) VMware NSX
10 2 (1.31%) GlusterFS
10 2 (1.31%) vCloud
10 2 (1.31%) Xen
10 2 (1.31%) XenApp
10 2 (1.31%) XenDesktop
11 1 (0.65%) GPFS
Systems Management
1 80 (52.29%) Puppet
2 77 (50.33%) Ansible
3 71 (46.41%) Terraform
4 70 (45.75%) Kubernetes
5 39 (25.49%) Opscode Chef
5 39 (25.49%) Packer
6 23 (15.03%) Grafana
6 23 (15.03%) Prometheus
7 17 (11.11%) ZABBIX
8 12 (7.84%) Consul
9 7 (4.58%) Red Hat Satellite
10 5 (3.27%) Nagios
10 5 (3.27%) Oracle ZFS
10 5 (3.27%) Salt
10 5 (3.27%) SCCM
11 3 (1.96%) Single Sign-On
11 3 (1.96%) vRealize
12 2 (1.31%) AirWatch
12 2 (1.31%) Data Guard
12 2 (1.31%) vCenter Server
Vendors
1 77 (50.33%) VMware
2 58 (37.91%) Red Hat
3 30 (19.61%) Dell
4 29 (18.95%) Atlassian
5 26 (16.99%) Splunk
6 23 (15.03%) Microsoft
7 20 (13.07%) EMC
8 18 (11.76%) Oracle
9 17 (11.11%) Cisco
10 13 (8.50%) HP
11 10 (6.54%) NetApp
12 7 (4.58%) CheckPoint
12 7 (4.58%) Cloudera
12 7 (4.58%) Sybase
13 6 (3.92%) Axway
13 6 (3.92%) Hortonworks
14 5 (3.27%) MuleSoft
14 5 (3.27%) Sparx
15 4 (2.61%) F5
15 4 (2.61%) Juniper