Period
to 27 October 2021

The following table provides summary statistics for permanent job vacancies advertised in Central London with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 6 months to 27 October 2021 with a comparison to the same period in the previous 2 years.

CentOS Linux
London > Central London
6 months to
27 Oct 2021
Same period 2020 Same period 2019
Rank 262 204 328
Rank change year-on-year -58 +124 -34
Permanent jobs citing CentOS 17 14 41
As % of all permanent jobs advertised in Central London 0.25% 0.33% 0.33%
As % of the Operating Systems category 1.54% 1.61% 1.41%
Number of salaries quoted 17 13 36
10th Percentile £69,250 " £37,500
25th Percentile £72,500 £65,000 £46,875
Median annual salary (50th Percentile) £87,500 £70,000 £65,000
Median % change year-on-year +25.00% +7.69% +13.04%
75th Percentile £103,750 £75,000 £93,125
90th Percentile £111,250 £106,250 £110,000
London median annual salary £70,000 £70,000 £60,000
% change year-on-year - +16.67% +3.45%

CentOS is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Central London with a requirement for operating system skills.

All Operating Systems
Central London
Permanent vacancies with a requirement for operating system skills 1,107 867 2,908
As % of all permanent IT jobs advertised in Central London 16.07% 20.69% 23.11%
Number of salaries quoted 1,020 773 2,535
10th Percentile £32,000 £32,950 £28,250
25th Percentile £42,500 £45,000 £41,250
Median annual salary (50th Percentile) £60,000 £65,000 £60,000
Median % change year-on-year -7.69% +8.33% -
75th Percentile £82,500 £77,500 £80,000
90th Percentile £97,500 £92,500 £95,000
London median annual salary £65,000 £65,000 £58,180
% change year-on-year - +11.72% +1.18%

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
Salary Trend in Central London

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

Salary trend for CentOS in Central London

CentOS
Salary Histogram in Central London

Salary distribution for jobs citing CentOS in Central London over the 6 months to 27 October 2021.

Salary histogram for CentOS in Central London

CentOS
Job Locations in Central London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the Central London region over the 6 months to 27 October 2021. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -54 17 £87,500 +25.00% 7
CentOS
London

For the 6 months to 27 October 2021, IT 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 permanent job ads across the Central London region with a requirement for CentOS.

1 17 (100.00%) Linux
2 15 (88.24%) Python
2 15 (88.24%) DevOps
3 12 (70.59%) Kubernetes
3 12 (70.59%) Docker
3 12 (70.59%) AWS
4 11 (64.71%) Red Hat Enterprise Linux
4 11 (64.71%) Bash Shell
4 11 (64.71%) Ubuntu
4 11 (64.71%) Site Reliability Engineering
5 10 (58.82%) Terraform
5 10 (58.82%) Ansible
5 10 (58.82%) Puppet
5 10 (58.82%) Finance
6 9 (52.94%) Configuration Management
6 9 (52.94%) Unix
7 8 (47.06%) Jenkins
8 7 (41.18%) Automated Trading
8 7 (41.18%) SQL
9 6 (35.29%) Windows
9 6 (35.29%) Git (software)
10 5 (29.41%) Infrastructure as Code
10 5 (29.41%) Azure
10 5 (29.41%) Red Hat
11 4 (23.53%) Java
11 4 (23.53%) Amazon EC2
11 4 (23.53%) Amazon S3
11 4 (23.53%) PowerShell
11 4 (23.53%) Kafka
11 4 (23.53%) GitHub

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 2 (11.76%) Elasticsearch
1 2 (11.76%) nginx
1 2 (11.76%) OpenStack
Cloud Services
1 12 (70.59%) AWS
2 5 (29.41%) Azure
3 4 (23.53%) Amazon EC2
3 4 (23.53%) Amazon S3
3 4 (23.53%) AWS Lambda
3 4 (23.53%) GCP
3 4 (23.53%) GitHub
3 4 (23.53%) Serverless
4 2 (11.76%) Cloud Computing
4 2 (11.76%) IaaS
4 2 (11.76%) OpenShift
4 2 (11.76%) PaaS
4 2 (11.76%) SaaS
5 1 (5.88%) MinIO
5 1 (5.88%) Virtual Private Cloud
Communications & Networking
1 3 (17.65%) Firewall
2 1 (5.88%) SAN
Database & Business Intelligence
1 3 (17.65%) PostgreSQL
2 2 (11.76%) Apache Cassandra
2 2 (11.76%) ArangoDB
2 2 (11.76%) Hadoop
2 2 (11.76%) MongoDB
2 2 (11.76%) MySQL
2 2 (11.76%) NoSQL
2 2 (11.76%) SQL Server
3 1 (5.88%) Big Data
3 1 (5.88%) Oracle Database
Development Applications
1 8 (47.06%) Jenkins
2 6 (35.29%) Git (software)
3 3 (17.65%) Bitbucket
4 2 (11.76%) Atlassian Bamboo
4 2 (11.76%) GitLab
4 2 (11.76%) Gradle
4 2 (11.76%) Maven
4 2 (11.76%) Subversion
4 2 (11.76%) Travis CI
5 1 (5.88%) Sonatype Nexus
General
1 10 (58.82%) Finance
2 3 (17.65%) Banking
2 3 (17.65%) Retail
3 2 (11.76%) International Banking
4 1 (5.88%) Back Office
4 1 (5.88%) Front Office
Job Titles
1 9 (52.94%) DevOps Engineer
2 6 (35.29%) Site Reliability Engineer
3 5 (29.41%) Site Engineer
4 3 (17.65%) Linux Engineer
5 2 (11.76%) Infrastructure Engineer
5 2 (11.76%) Senior DevOps
5 2 (11.76%) Senior DevOps Engineer
6 1 (5.88%) Analyst
6 1 (5.88%) Applications Support
6 1 (5.88%) Applications Support Analyst
6 1 (5.88%) Automation Engineer
6 1 (5.88%) DevOps Engineer - Fintech
6 1 (5.88%) E-Commerce Engineer
6 1 (5.88%) Embedded Engineer
6 1 (5.88%) Linux Systems Engineer
6 1 (5.88%) Senior Applications Support
6 1 (5.88%) Senior Applications Support Analyst
6 1 (5.88%) Senior Support Analyst
6 1 (5.88%) Support Analyst
6 1 (5.88%) Systems Engineer
Libraries, Frameworks & Software Standards
1 4 (23.53%) Elastic Stack
1 4 (23.53%) Kafka
2 2 (11.76%) .NET
2 2 (11.76%) LEMP Stack
3 1 (5.88%) FIX Protocol
3 1 (5.88%) Loki
Miscellaneous
1 1 (5.88%) Derivative
1 1 (5.88%) Eurex
1 1 (5.88%) Hybrid Cloud
Operating Systems
1 17 (100.00%) Linux
2 11 (64.71%) Red Hat Enterprise Linux
2 11 (64.71%) Ubuntu
3 9 (52.94%) Unix
4 6 (35.29%) Windows
5 2 (11.76%) Solaris
5 2 (11.76%) SUSE
6 1 (5.88%) Windows Server
Processes & Methodologies
1 15 (88.24%) DevOps
2 11 (64.71%) Site Reliability Engineering
3 9 (52.94%) Configuration Management
4 7 (41.18%) Automated Trading
5 5 (29.41%) Infrastructure as Code
6 3 (17.65%) Fintech
6 3 (17.65%) Kernel Tuning
6 3 (17.65%) Security Hardening
7 2 (11.76%) Agile Software Development
7 2 (11.76%) Availability Management
7 2 (11.76%) Capacity Planning
7 2 (11.76%) Change Management
7 2 (11.76%) Continuous Integration
7 2 (11.76%) Data Security
7 2 (11.76%) Infrastructure Engineering
7 2 (11.76%) Load Balancing
7 2 (11.76%) Performance Monitoring
7 2 (11.76%) Performance Tuning
7 2 (11.76%) Software Delivery
8 1 (5.88%) Deployment Automation
Programming Languages
1 15 (88.24%) Python
2 11 (64.71%) Bash Shell
3 7 (41.18%) SQL
4 4 (23.53%) Java
4 4 (23.53%) PowerShell
5 3 (17.65%) Perl
6 2 (11.76%) C#
6 2 (11.76%) Go
7 1 (5.88%) Groovy
7 1 (5.88%) Ruby
Quality Assurance & Compliance
1 2 (11.76%) GDPR
1 2 (11.76%) Sarbanes-Oxley
System Software
1 12 (70.59%) Docker
2 2 (11.76%) Apache ZooKeeper
2 2 (11.76%) VMware Infrastructure
3 1 (5.88%) Active Directory
3 1 (5.88%) vSphere
Systems Management
1 12 (70.59%) Kubernetes
2 10 (58.82%) Ansible
2 10 (58.82%) Puppet
2 10 (58.82%) Terraform
3 4 (23.53%) Opscode Chef
4 2 (11.76%) Control-M
4 2 (11.76%) HAProxy
4 2 (11.76%) Nagios
4 2 (11.76%) Packer
4 2 (11.76%) Prometheus
5 1 (5.88%) Grafana
Vendors
1 5 (29.41%) Red Hat
2 3 (17.65%) Oracle
3 2 (11.76%) BMC
3 2 (11.76%) F5
3 2 (11.76%) Hitachi
3 2 (11.76%) SaltStack
3 2 (11.76%) VMware
4 1 (5.88%) Mellanox
4 1 (5.88%) Solarflare
4 1 (5.88%) Splunk