Period
to

The following table provides summary statistics for permanent job vacancies advertised in 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 4 July 2022 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > London
6 months to
4 Jul 2022
Same period 2021 Same period 2020
Rank 714 486 399
Rank change year-on-year -228 -87 +37
Permanent jobs citing CentOS 203 194 204
As % of all permanent jobs advertised in London 0.26% 0.46% 0.62%
As % of the Operating Systems category 1.50% 2.80% 3.19%
Number of salaries quoted 99 152 160
10th Percentile £42,500 £50,125 £46,250
25th Percentile £52,500 £57,500 £56,250
Median annual salary (50th Percentile) £67,500 £70,000 £65,000
Median % change year-on-year -3.57% +7.69% +8.33%
75th Percentile £86,250 £85,313 £82,500
90th Percentile £92,500 £97,250 £105,000
England median annual salary £52,500 £57,500 £54,500
% change year-on-year -8.70% +5.50% +4.81%

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 London with a requirement for operating system skills.

All Operating Systems
London
Permanent vacancies with a requirement for operating system skills 13,562 6,939 6,397
As % of all permanent IT jobs advertised in London 17.50% 16.60% 19.44%
Number of salaries quoted 6,158 5,005 5,303
10th Percentile £32,500 £36,000 £32,500
25th Percentile £45,000 £48,750 £43,750
Median annual salary (50th Percentile) £65,000 £65,000 £61,250
Median % change year-on-year - +6.12% +2.08%
75th Percentile £83,750 £83,750 £77,500
90th Percentile £102,500 £96,250 £93,750
England median annual salary £52,500 £50,000 £50,000
% change year-on-year +5.00% - +5.26%

CentOS
Job Vacancy Trend in London

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

Job vacancy trend for CentOS in London

CentOS
Salary Trend in London

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

Salary trend for CentOS in London

CentOS
Salary Histogram in London

Salary distribution for jobs citing CentOS in London over the 6 months to 4 July 2022.

Salary histogram for CentOS in London

CentOS
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the London region over the 6 months to 4 July 2022. 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
Jobs
Central London -52 27 £75,000 -6.25% 7
South London -56 3 £72,500 +23.93%
West London - 2 £58,750 - 3
East London -50 1 £50,000 -16.67% 1
CentOS
England

For the 6 months to 4 July 2022, 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 London region with a requirement for CentOS.

1 203 (100.00%) Linux
2 124 (61.08%) Python
3 116 (57.14%) AWS
4 97 (47.78%) Red Hat
5 88 (43.35%) Bash
6 85 (41.87%) Docker
6 85 (41.87%) Finance
7 84 (41.38%) Ansible
8 82 (40.39%) Agile
9 80 (39.41%) Social Skills
10 79 (38.92%) DevOps
10 79 (38.92%) Jenkins
11 78 (38.42%) Java
12 67 (33.00%) MySQL
12 67 (33.00%) Azure
13 66 (32.51%) Firewall
14 64 (31.53%) Configuration Management
14 64 (31.53%) Kubernetes
15 63 (31.03%) Puppet
16 62 (30.54%) Ubuntu
17 61 (30.05%) SQL
18 58 (28.57%) CI/CD
19 56 (27.59%) PostgreSQL
19 56 (27.59%) VMware
20 54 (26.60%) Problem-Solving
21 53 (26.11%) Git (software)
22 52 (25.62%) DNS
23 50 (24.63%) Test Automation
24 49 (24.14%) VPN
24 49 (24.14%) JavaScript

CentOS
Co-occurring IT Skills in 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 31 (15.27%) nginx
2 27 (13.30%) OpenStack
3 14 (6.90%) Ethereum
4 13 (6.40%) Jupyter
5 10 (4.93%) Apache
6 6 (2.96%) Tomcat
7 5 (2.46%) IIS
7 5 (2.46%) SharePoint
8 4 (1.97%) MS Exchange
9 3 (1.48%) WebLogic
10 2 (0.99%) Confluence
11 1 (0.49%) JBoss
11 1 (0.49%) Traefik
11 1 (0.49%) WebSphere
Applications
1 4 (1.97%) Microsoft Office
Business Applications
1 13 (6.40%) Ripple
1 13 (6.40%) Ripple XRP
2 3 (1.48%) Fidessa
Cloud Services
1 116 (57.14%) AWS
2 67 (33.00%) Azure
3 41 (20.20%) Amazon EC2
4 26 (12.81%) GitHub
5 23 (11.33%) OpenShift
6 22 (10.84%) Cloud Computing
7 20 (9.85%) AWS CloudFormation
8 19 (9.36%) MinIO
9 15 (7.39%) npm
10 14 (6.90%) GCP
10 14 (6.90%) Microsoft 365
11 13 (6.40%) Azure Active Directory
12 12 (5.91%) Virtual Private Cloud
13 10 (4.93%) Amazon S3
14 9 (4.43%) Azure DevOps
14 9 (4.43%) Google Workspace
15 8 (3.94%) AWS Direct Connect
15 8 (3.94%) Route 53
16 7 (3.45%) Amazon ECS
16 7 (3.45%) AWS Fargate
Communications & Networking
1 66 (32.51%) Firewall
2 52 (25.62%) DNS
3 49 (24.14%) VPN
4 42 (20.69%) DHCP
5 16 (7.88%) VLAN
6 15 (7.39%) SAN
7 14 (6.90%) FIX Connectivity
8 13 (6.40%) TCP/IP
9 12 (5.91%) HTTP
9 12 (5.91%) NAS
9 12 (5.91%) WAN
10 10 (4.93%) Intranet
10 10 (4.93%) Network Security
11 8 (3.94%) OpenVPN
12 7 (3.45%) IPv6
12 7 (3.45%) LAN
13 6 (2.96%) Broadband
13 6 (2.96%) DSL
13 6 (2.96%) IPsec
14 5 (2.46%) Wireless
Database & Business Intelligence
1 67 (33.00%) MySQL
2 56 (27.59%) PostgreSQL
3 35 (17.24%) SQL Server
4 31 (15.27%) NoSQL
5 28 (13.79%) Big Data
5 28 (13.79%) MongoDB
6 25 (12.32%) Relational Database
7 22 (10.84%) Apache Cassandra
7 22 (10.84%) ArangoDB
7 22 (10.84%) Elasticsearch
7 22 (10.84%) Hadoop
8 17 (8.37%) Redis
9 16 (7.88%) Amazon RDS
10 13 (6.40%) InfluxDB
10 13 (6.40%) Parquet
11 11 (5.42%) MariaDB
12 10 (4.93%) InterSystems Cache
13 5 (2.46%) Oracle Database
13 5 (2.46%) Oracle Database 12c
13 5 (2.46%) RDBMS
Development Applications
1 79 (38.92%) Jenkins
2 53 (26.11%) Git (software)
3 39 (19.21%) GitLab
4 31 (15.27%) Atlassian Bamboo
5 27 (13.30%) CircleCI
6 22 (10.84%) Gradle
6 22 (10.84%) Maven
6 22 (10.84%) Travis CI
7 20 (9.85%) Bitbucket
8 19 (9.36%) IntelliJ
8 19 (9.36%) JUnit
8 19 (9.36%) Selenium
9 16 (7.88%) TeamCity
10 15 (7.39%) Subversion
11 13 (6.40%) Mockito
12 10 (4.93%) Octopus Deploy
13 8 (3.94%) JIRA
14 6 (2.96%) git-flow
14 6 (2.96%) GoCD
15 5 (2.46%) Chocolatey
General
1 85 (41.87%) Finance
2 80 (39.41%) Social Skills
3 32 (15.76%) Games
4 18 (8.87%) Analytical Skills
5 11 (5.42%) Financial Institution
6 7 (3.45%) Telecoms
7 5 (2.46%) Inclusion and Diversity
7 5 (2.46%) Legal
7 5 (2.46%) Public Sector
8 4 (1.97%) Banking
8 4 (1.97%) Documentation Skills
9 3 (1.48%) Retail
10 2 (0.99%) Advertising
11 1 (0.49%) Front Office
11 1 (0.49%) Investment Banking
11 1 (0.49%) Law
11 1 (0.49%) Organisational Skills
11 1 (0.49%) Presentation Skills
Job Titles
1 62 (30.54%) DevOps Engineer
2 28 (13.79%) Senior DevOps
2 28 (13.79%) Senior DevOps Engineer
3 24 (11.82%) Analyst
4 19 (9.36%) Embedded Engineer
5 18 (8.87%) Administrator
6 17 (8.37%) Developer
6 17 (8.37%) Linux Engineer
6 17 (8.37%) Support Analyst
7 16 (7.88%) Systems Administrator
7 16 (7.88%) Systems Engineer
8 15 (7.39%) Software Engineer
9 14 (6.90%) Applications Support
9 14 (6.90%) Applications Support Analyst
10 13 (6.40%) Infrastructure Engineer
10 13 (6.40%) Java Developer
10 13 (6.40%) Java Software Developer
10 13 (6.40%) Linux Administrator
10 13 (6.40%) Linux Systems Administrator
10 13 (6.40%) Server Engineer
Libraries, Frameworks & Software Standards
1 25 (12.32%) Kafka
1 25 (12.32%) LEMP Stack
2 19 (9.36%) Vue.js
3 17 (8.37%) FIX Protocol
4 14 (6.90%) Elastic Stack
5 11 (5.42%) WebSockets
6 10 (4.93%) Node.js
7 6 (2.96%) Ruby on Rails
8 5 (2.46%) LAMP
8 5 (2.46%) PySpark
8 5 (2.46%) Web Services
9 4 (1.97%) CSS
9 4 (1.97%) HTML
9 4 (1.97%) Laravel
9 4 (1.97%) Symfony
9 4 (1.97%) Yii
10 3 (1.48%) LDAP
10 3 (1.48%) Loki
10 3 (1.48%) YAML
11 1 (0.49%) Swagger
Miscellaneous
1 25 (12.32%) Foreign Exchange (FX)
2 23 (11.33%) Private Cloud
3 19 (9.36%) Social Media
3 19 (9.36%) Social Network
4 18 (8.87%) Blockchain
5 16 (7.88%) Data Centre
6 14 (6.90%) Bitcoin
6 14 (6.90%) Derivative
7 13 (6.40%) Litecoin
8 11 (5.42%) Client/Server
8 11 (5.42%) Equities
8 11 (5.42%) Fixed Income
8 11 (5.42%) Low-Code
8 11 (5.42%) OTC Derivatives
8 11 (5.42%) Self-Motivation
9 9 (4.43%) Management Information System
10 6 (2.96%) Public Cloud
10 6 (2.96%) User Experience
11 5 (2.46%) CMDB
11 5 (2.46%) Linux Command Line
Operating Systems
1 203 (100.00%) Linux
2 62 (30.54%) Ubuntu
3 46 (22.66%) Windows
4 24 (11.82%) Red Hat Enterprise Linux
5 21 (10.34%) Windows Server
6 17 (8.37%) Amazon Linux
7 13 (6.40%) Windows Server 2016
8 12 (5.91%) Windows Server 2012
9 11 (5.42%) Unix
10 10 (4.93%) Android
10 10 (4.93%) Apple iOS
10 10 (4.93%) Debian
11 6 (2.96%) Windows Server 2019
12 4 (1.97%) Solaris
12 4 (1.97%) VyOS
13 3 (1.48%) Oracle Linux
14 2 (0.99%) SUSE
15 1 (0.49%) openSUSE
15 1 (0.49%) VMS
15 1 (0.49%) Windows Server 2008
Processes & Methodologies
1 82 (40.39%) Agile
2 79 (38.92%) DevOps
3 64 (31.53%) Configuration Management
4 58 (28.57%) CI/CD
5 54 (26.60%) Problem-Solving
6 50 (24.63%) Test Automation
7 42 (20.69%) Continuous Integration
8 36 (17.73%) Load Balancing
8 36 (17.73%) Migration
8 36 (17.73%) Site Reliability Engineering
9 33 (16.26%) Task Automation
10 32 (15.76%) Computer Science
11 27 (13.30%) High Availability
11 27 (13.30%) Infrastructure as Code
12 26 (12.81%) TDD
13 24 (11.82%) Deployment Automation
14 23 (11.33%) ITIL
15 22 (10.84%) Software Delivery
16 21 (10.34%) Continuous Delivery
16 21 (10.34%) Process Improvement
Programming Languages
1 124 (61.08%) Python
2 88 (43.35%) Bash
3 78 (38.42%) Java
4 61 (30.05%) SQL
5 49 (24.14%) JavaScript
6 45 (22.17%) Go
7 37 (18.23%) PowerShell
8 30 (14.78%) Groovy
9 20 (9.85%) Ruby
10 19 (9.36%) Perl
11 14 (6.90%) PHP
12 11 (5.42%) Kotlin
13 6 (2.96%) Apple Swift
13 6 (2.96%) Objective-C
14 5 (2.46%) PL/SQL
14 5 (2.46%) TypeScript
15 3 (1.48%) C++
16 2 (0.99%) Shell Script
17 1 (0.49%) C#
Qualifications
1 24 (11.82%) Degree
2 22 (10.84%) Computer Science Degree
3 11 (5.42%) Security Cleared
4 10 (4.93%) Microsoft Certification
4 10 (4.93%) SC Cleared
5 9 (4.43%) AWS Certification
5 9 (4.43%) MCSE
6 6 (2.96%) Cisco Certification
7 5 (2.46%) RHCE
8 4 (1.97%) CCNA
9 3 (1.48%) Linux+ Certification
9 3 (1.48%) LPIC
9 3 (1.48%) RHCSA
10 2 (0.99%) CCNP
11 1 (0.49%) DV Cleared
11 1 (0.49%) MCSA
11 1 (0.49%) VCAP
Quality Assurance & Compliance
1 18 (8.87%) QA
2 7 (3.45%) ISO/IEC 27001
3 6 (2.96%) Accessibility
4 5 (2.46%) PCI DSS
5 3 (1.48%) HIPAA
5 3 (1.48%) Sarbanes-Oxley
6 1 (0.49%) NCSC
System Software
1 85 (41.87%) Docker
2 44 (21.67%) VMware Infrastructure
3 24 (11.82%) Active Directory
4 22 (10.84%) Apache ZooKeeper
5 13 (6.40%) iptables
6 11 (5.42%) Dovecot
6 11 (5.42%) Postfix
7 9 (4.43%) NFS
8 7 (3.45%) vSphere
9 6 (2.96%) Citrix Hypervisor
9 6 (2.96%) Hyper-V
10 4 (1.97%) LXC
11 3 (1.48%) BitLocker
11 3 (1.48%) KVM
11 3 (1.48%) OpenSSH
11 3 (1.48%) Virtual Servers
12 1 (0.49%) DRBD
12 1 (0.49%) Firmware
Systems Management
1 84 (41.38%) Ansible
2 64 (31.53%) Kubernetes
3 63 (31.03%) Puppet
4 49 (24.14%) Prometheus
5 48 (23.65%) Terraform
6 43 (21.18%) Grafana
7 29 (14.29%) HAProxy
8 21 (10.34%) ZABBIX
9 17 (8.37%) Graylog
10 14 (6.90%) Opscode Chef
11 11 (5.42%) Packer
12 10 (4.93%) Failover Clustering
13 8 (3.94%) Kibana
13 8 (3.94%) Nagios
14 7 (3.45%) Icinga
14 7 (3.45%) yum
15 6 (2.96%) Docker Swarm
15 6 (2.96%) Graphite
16 5 (2.46%) Single Sign-On
17 4 (1.97%) FreeIPA
Vendors
1 97 (47.78%) Red Hat
2 56 (27.59%) VMware
3 36 (17.73%) Splunk
4 29 (14.29%) F5
5 26 (12.81%) Microsoft
6 17 (8.37%) Google
7 15 (7.39%) HP
8 13 (6.40%) Oracle
9 11 (5.42%) ServiceNow
9 11 (5.42%) Synology
10 10 (4.93%) Cisco
11 8 (3.94%) Dynatrace
11 8 (3.94%) Nimble Storage
12 6 (2.96%) Juniper
12 6 (2.96%) SolarWinds
13 5 (2.46%) Foundry
13 5 (2.46%) Palantir
13 5 (2.46%) SaltStack
14 4 (1.97%) Bloomberg
14 4 (1.97%) Reuters