Period
to 31 May 2020

The following table provides summary statistics for contract job vacancies advertised in Central 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 31 May 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
London > Central London
6 months to
31 May 2020
Same period 2019 Same period 2018
Rank 158 263 238
Rank change year-on-year +105 -25 -45
Contract jobs citing CentOS 5 15 67
As % of all contract jobs advertised in Central London 0.13% 0.18% 0.73%
As % of the Operating Systems category 0.78% 0.91% 3.61%
Number of daily rates quoted 2 13 49
Median daily rate £583 £550 £550
Median daily rate % change year-on-year +5.91% - +31.74%
10th Percentile £523 £386 £413
90th Percentile £648 £745 £638
London median daily rate £450 £520 £535
% change year-on-year -13.46% -2.76% +6.95%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
London median hourly rate £35.00 - £52.50

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 advertised in Central London with a requirement for operating system skills.

All Operating Systems
Central London
Contract vacancies with a requirement for operating system skills 642 1,643 1,854
As % of all contract IT jobs advertised in Central London 17.11% 19.38% 20.25%
Number of daily rates quoted 462 1,227 1,408
Median daily rate £450 £480 £500
Median daily rate % change year-on-year -6.25% -4.00% +11.11%
10th Percentile £150 £175 £185
90th Percentile £625 £650 £638
London median daily rate £475 £488 £488
% change year-on-year -2.56% - +5.98%
Number of hourly rates quoted 17 35 68
Median hourly rate £18.70 £21.00 £20.00
Median hourly rate % change year-on-year -10.95% +5.00% +15.94%
10th Percentile £13.40 £16.74 £13.00
90th Percentile £24.04 £39.75 £26.50
Median hourly rate £25.00 £21.00 £19.50
% change year-on-year +19.05% +7.69% -7.14%

CentOS
Job Vacancy Trend in Central London

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

Job vacancy trend for CentOS in Central London

CentOS
Contractor Daily Rate Trend in Central London

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

Daily rate trend for CentOS in Central London

CentOS
Contractor Hourly Rate Trend in Central London

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

Hourly rate trend for CentOS in Central London

CentOS
Contract Job Locations in Central 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 Central London region over the 6 months to 31 May 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
City of London +78 5 £583 +3.56% 4
CentOS
London

For the 6 months to 31 May 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 Central London region with a requirement for CentOS.

1 5 (100.00%) Linux
2 3 (60.00%) Python
2 3 (60.00%) SQL
2 3 (60.00%) AWS
2 3 (60.00%) Bash Shell
2 3 (60.00%) Puppet
2 3 (60.00%) Ansible
2 3 (60.00%) DevOps
3 2 (40.00%) PaaS
3 2 (40.00%) Docker
3 2 (40.00%) Opscode Chef
3 2 (40.00%) IaaS
3 2 (40.00%) Jenkins
3 2 (40.00%) MongoDB
3 2 (40.00%) Windows
3 2 (40.00%) Azure
3 2 (40.00%) Red Hat Enterprise Linux
3 2 (40.00%) Kubernetes
3 2 (40.00%) .NET
3 2 (40.00%) Migration
4 1 (20.00%) Network+ Certification
4 1 (20.00%) PostgreSQL
4 1 (20.00%) VMware
4 1 (20.00%) Clustering
4 1 (20.00%) SQL Server Reporting Services
4 1 (20.00%) Maven
4 1 (20.00%) Software Engineering
4 1 (20.00%) SQL Server Analysis Services
4 1 (20.00%) SCOM
4 1 (20.00%) Network Security

CentOS
Co-occurring IT Skills in Central 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 1 (20.00%) Skype for Business
Cloud Services
1 3 (60.00%) AWS
2 2 (40.00%) Azure
2 2 (40.00%) IaaS
2 2 (40.00%) PaaS
3 1 (20.00%) Amazon EC2
3 1 (20.00%) NuGet
3 1 (20.00%) OpenShift
Communications & Networking
1 1 (20.00%) Firewall
1 1 (20.00%) Network Security
Database & Business Intelligence
1 2 (40.00%) MongoDB
2 1 (20.00%) Amazon Aurora
2 1 (20.00%) Amazon RDS
2 1 (20.00%) Big Data
2 1 (20.00%) MySQL
2 1 (20.00%) PostgreSQL
2 1 (20.00%) SQL Server
2 1 (20.00%) SQL Server Analysis Services
2 1 (20.00%) SQL Server Reporting Services
Development Applications
1 2 (40.00%) Jenkins
2 1 (20.00%) Git (software)
2 1 (20.00%) GitLab
2 1 (20.00%) Maven
2 1 (20.00%) MSI
2 1 (20.00%) Team Foundation Server
2 1 (20.00%) TeamCity
2 1 (20.00%) WiX
General
1 1 (20.00%) Finance
Job Titles
1 2 (40.00%) Cloud Engineer
1 2 (40.00%) DevOps Engineer
2 1 (20.00%) Architect
2 1 (20.00%) AWS Engineer
2 1 (20.00%) Cloud Architect
2 1 (20.00%) CloudOps Engineer
2 1 (20.00%) Database Engineer
2 1 (20.00%) Network Architect
2 1 (20.00%) Network Engineer
2 1 (20.00%) Operations Engineer
2 1 (20.00%) Reliability Engineer
Libraries, Frameworks & Software Standards
1 2 (40.00%) .NET
2 1 (20.00%) ASP.NET
Miscellaneous
1 1 (20.00%) Analytical Skills
1 1 (20.00%) Clustering
1 1 (20.00%) Hybrid Cloud
1 1 (20.00%) Linux Command Line
1 1 (20.00%) Private Cloud
1 1 (20.00%) Public Cloud
Operating Systems
1 5 (100.00%) Linux
2 2 (40.00%) Red Hat Enterprise Linux
2 2 (40.00%) Windows
3 1 (20.00%) Amazon Linux
3 1 (20.00%) Windows Server
Processes & Methodologies
1 3 (60.00%) DevOps
2 2 (40.00%) Migration
3 1 (20.00%) Cloud Operations
3 1 (20.00%) Configuration Management
3 1 (20.00%) Data Protection
3 1 (20.00%) Infrastructure Automation
3 1 (20.00%) Infrastructure Engineering
3 1 (20.00%) Malware Analysis
3 1 (20.00%) Mentoring
3 1 (20.00%) Project Delivery
3 1 (20.00%) Service Design
3 1 (20.00%) SIEM
3 1 (20.00%) Software Engineering
3 1 (20.00%) Vulnerability Scanning
Programming Languages
1 3 (60.00%) Bash Shell
1 3 (60.00%) Python
1 3 (60.00%) SQL
2 1 (20.00%) C#
2 1 (20.00%) C++
2 1 (20.00%) Java
2 1 (20.00%) Perl
2 1 (20.00%) PowerShell
Qualifications
1 1 (20.00%) CCENT
1 1 (20.00%) CCNA
1 1 (20.00%) Cisco Certification
1 1 (20.00%) DV Cleared
1 1 (20.00%) Network+ Certification
1 1 (20.00%) SC Cleared
1 1 (20.00%) Security Cleared
Quality Assurance & Compliance
1 1 (20.00%) NIST
System Software
1 2 (40.00%) Docker
2 1 (20.00%) Active Directory
2 1 (20.00%) Hyper-V
2 1 (20.00%) Virtual Machines
2 1 (20.00%) Virtual Servers
2 1 (20.00%) VMware NSX
Systems Management
1 3 (60.00%) Ansible
1 3 (60.00%) Puppet
2 2 (40.00%) Kubernetes
2 2 (40.00%) Opscode Chef
3 1 (20.00%) Microsoft Clustering
3 1 (20.00%) Microsoft Data Protection Manager
3 1 (20.00%) SCOM
3 1 (20.00%) SCOrch
3 1 (20.00%) Terraform
3 1 (20.00%) vCenter Server
Vendors
1 1 (20.00%) Citrix
1 1 (20.00%) F5
1 1 (20.00%) Palo Alto
1 1 (20.00%) Remedy
1 1 (20.00%) VMware