Period
to

The following table provides summary statistics for contract job vacancies advertised in the City of 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 23 May 2022 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
Central London > City of London
6 months to
23 May 2022
Same period 2021 Same period 2020
Rank 176 - 153
Rank change year-on-year - - +80
Contract jobs citing CentOS 13 0 6
As % of all contract jobs advertised in the City of London 0.31% - 0.19%
As % of the Operating Systems category 2.46% - 1.11%
Number of daily rates quoted 13 0 4
10th Percentile £318 - £524
25th Percentile £500 - £541
Median daily rate (50th Percentile) £570 - £613
Median % change year-on-year - - +15.29%
75th Percentile £613 - £667
90th Percentile £665 - £679
Central London median daily rate £570 £478 £613
% change year-on-year +19.25% -21.96% +19.51%

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 City of London with a requirement for operating system skills.

All Operating Systems
City of London
Contract vacancies with a requirement for operating system skills 529 357 541
As % of all contract IT jobs advertised in the City of London 12.76% 12.56% 17.07%
Number of daily rates quoted 405 271 412
10th Percentile £186 £213 £150
25th Percentile £350 £377 £278
Median daily rate (50th Percentile) £508 £490 £450
Median % change year-on-year +3.68% +8.78% -5.26%
75th Percentile £620 £592 £552
90th Percentile £700 £700 £638
Central London median daily rate £500 £492 £450
% change year-on-year +1.57% +9.39% -5.26%
Number of hourly rates quoted 13 3 11
10th Percentile - £13.68 £12.50
25th Percentile £13.88 £13.75 £14.19
Median hourly rate £24.50 £14.00 £16.95
Median % change year-on-year +75.00% -17.40% -19.29%
75th Percentile £35.00 £14.31 £19.10
90th Percentile £73.00 £14.50 £21.00
Central London median hourly rate £24.75 £14.00 £18.70
% change year-on-year +76.79% -25.13% -10.95%

CentOS
Job Vacancy Trend in the City of London

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

Job vacancy trend for CentOS in the City of London

CentOS
Contractor Daily Rate Trend in the City of London

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

Daily rate trend for CentOS in the City of London

CentOS
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing CentOS in the City of London over the 6 months to 23 May 2022.

Daily rate histogram for CentOS in the City of London

For the 6 months to 23 May 2022, 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 City of London region with a requirement for CentOS.

1 13 (100.00%) Linux
2 11 (84.62%) Red Hat
3 8 (61.54%) Red Hat Enterprise Linux
4 7 (53.85%) Ubuntu
4 7 (53.85%) Puppet
5 6 (46.15%) Bash
5 6 (46.15%) Configuration Management
6 5 (38.46%) Perl
6 5 (38.46%) Ruby
6 5 (38.46%) Azure
6 5 (38.46%) AWS
6 5 (38.46%) Red Hat Satellite
6 5 (38.46%) Ansible
6 5 (38.46%) DevOps
6 5 (38.46%) Analytical Skills
6 5 (38.46%) Social Skills
7 4 (30.77%) Project Delivery
7 4 (30.77%) CI/CD
7 4 (30.77%) Platform Engineering
7 4 (30.77%) Task Automation
7 4 (30.77%) Terraform
7 4 (30.77%) Finance
7 4 (30.77%) SC Cleared
7 4 (30.77%) Security Cleared
7 4 (30.77%) Python
7 4 (30.77%) Windows
7 4 (30.77%) VMware
7 4 (30.77%) Agile
8 3 (23.08%) Oracle
8 3 (23.08%) PostgreSQL

CentOS
Co-occurring IT Skills in the City of 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 2 (15.38%) Apache Pig
1 2 (15.38%) Confluence
2 1 (7.69%) nginx
2 1 (7.69%) SharePoint
Cloud Services
1 5 (38.46%) AWS
1 5 (38.46%) Azure
2 2 (15.38%) AWS CloudFormation
2 2 (15.38%) GCP
3 1 (7.69%) GitHub
3 1 (7.69%) Nutanix
3 1 (7.69%) OpenShift
3 1 (7.69%) PaaS
3 1 (7.69%) Virtual Private Cloud
Communications & Networking
1 2 (15.38%) DNS
1 2 (15.38%) TCP/IP
2 1 (7.69%) Kerberos
Database & Business Intelligence
1 3 (23.08%) PostgreSQL
2 2 (15.38%) Apache Hive
2 2 (15.38%) Hadoop
2 2 (15.38%) HBase
Development Applications
1 3 (23.08%) GitLab
2 2 (15.38%) JIRA
3 1 (7.69%) Jenkins
3 1 (7.69%) Serena SBM
3 1 (7.69%) SonarQube
3 1 (7.69%) Sonatype Nexus
3 1 (7.69%) Subversion
3 1 (7.69%) TeamCity
General
1 5 (38.46%) Analytical Skills
1 5 (38.46%) Social Skills
2 4 (30.77%) Finance
3 1 (7.69%) Banking
3 1 (7.69%) International Banking
3 1 (7.69%) Public Sector
Job Titles
1 4 (30.77%) Platform Engineer
2 3 (23.08%) Linux Engineer
3 2 (15.38%) Data Engineer
3 2 (15.38%) DevOps Engineer
3 2 (15.38%) Hadoop Engineer
3 2 (15.38%) Vulnerability Specialist
4 1 (7.69%) Administrator
4 1 (7.69%) Linux Administrator
4 1 (7.69%) Programme Manager
4 1 (7.69%) Senior Systems Engineer
4 1 (7.69%) Systems Engineer
Libraries, Frameworks & Software Standards
1 2 (15.38%) Apache Tez
2 1 (7.69%) cloud-init
2 1 (7.69%) LDAP
Miscellaneous
1 2 (15.38%) Legacy Systems
2 1 (7.69%) Linux Command Line
2 1 (7.69%) PKI
2 1 (7.69%) Public Cloud
Operating Systems
1 13 (100.00%) Linux
2 8 (61.54%) Red Hat Enterprise Linux
3 7 (53.85%) Ubuntu
4 4 (30.77%) Windows
5 3 (23.08%) Oracle Linux
6 2 (15.38%) HPUX
6 2 (15.38%) Scientific Linux
6 2 (15.38%) Windows Server
6 2 (15.38%) Windows Server 2008
6 2 (15.38%) Windows Server 2012
7 1 (7.69%) Debian
7 1 (7.69%) Solaris
7 1 (7.69%) SUSE
Processes & Methodologies
1 6 (46.15%) Configuration Management
2 5 (38.46%) DevOps
3 4 (30.77%) Agile
3 4 (30.77%) CI/CD
3 4 (30.77%) Platform Engineering
3 4 (30.77%) Project Delivery
3 4 (30.77%) Task Automation
4 3 (23.08%) Infrastructure as Code
5 2 (15.38%) Data Engineering
5 2 (15.38%) ETL
5 2 (15.38%) MapReduce
5 2 (15.38%) Patch Management
6 1 (7.69%) Continuous Improvement
6 1 (7.69%) Continuous Integration
6 1 (7.69%) Data Security
6 1 (7.69%) Kernel Tuning
6 1 (7.69%) Problem-Solving
6 1 (7.69%) Programme Management
6 1 (7.69%) SDLC
6 1 (7.69%) Site Reliability Engineering
Programming Languages
1 6 (46.15%) Bash
2 5 (38.46%) Perl
2 5 (38.46%) Ruby
3 4 (30.77%) Python
4 2 (15.38%) SQL
5 1 (7.69%) Java
5 1 (7.69%) PowerShell
5 1 (7.69%) Shell Script
Qualifications
1 4 (30.77%) SC Cleared
1 4 (30.77%) Security Cleared
Quality Assurance & Compliance
1 1 (7.69%) GDPR
1 1 (7.69%) NCSC
1 1 (7.69%) Sarbanes-Oxley
System Software
1 3 (23.08%) VMware ESXi
2 2 (15.38%) Apache ZooKeeper
2 2 (15.38%) Docker
2 2 (15.38%) VMware Infrastructure
3 1 (7.69%) NFS
3 1 (7.69%) Veritas File System
3 1 (7.69%) Veritas Volume Manager
Systems Management
1 7 (53.85%) Puppet
2 5 (38.46%) Ansible
2 5 (38.46%) Red Hat Satellite
3 4 (30.77%) Terraform
4 2 (15.38%) Ambari
4 2 (15.38%) Hadoop YARN
4 2 (15.38%) Oozie
4 2 (15.38%) vCenter Server
5 1 (7.69%) Control-M
5 1 (7.69%) Docker Swarm
5 1 (7.69%) Icinga
5 1 (7.69%) Kubernetes
5 1 (7.69%) Opscode Chef
5 1 (7.69%) Packer
5 1 (7.69%) QRadar
5 1 (7.69%) Tivoli
Vendors
1 11 (84.62%) Red Hat
2 4 (30.77%) VMware
3 3 (23.08%) Oracle
4 2 (15.38%) Hortonworks
4 2 (15.38%) Microsoft
5 1 (7.69%) BMC
5 1 (7.69%) CyberArk
5 1 (7.69%) EMC
5 1 (7.69%) IBM
5 1 (7.69%) Infoblox
5 1 (7.69%) Qualys
5 1 (7.69%) Serena
5 1 (7.69%) ServiceNow
5 1 (7.69%) Splunk