Period
to

The following table provides summary statistics for permanent job vacancies advertised in England 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 28 June 2022 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
28 Jun 2022
Same period 2021 Same period 2020
Rank 654 445 435
Rank change year-on-year -209 -10 -10
Permanent jobs citing CentOS 570 593 442
As % of all permanent jobs advertised in England 0.38% 0.63% 0.61%
As % of the Operating Systems category 2.10% 3.38% 2.85%
Number of salaries quoted 336 351 347
10th Percentile £32,500 £36,250 £32,500
25th Percentile £41,500 £43,375 £41,250
Median annual salary (50th Percentile) £52,500 £57,000 £55,000
Median % change year-on-year -7.89% +3.64% +5.77%
75th Percentile £66,563 £75,000 £72,500
90th Percentile £86,250 £87,500 £87,500
UK median annual salary £52,500 £55,000 £52,500
% change year-on-year -4.55% +4.76% +5.00%

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 England with a requirement for operating system skills.

All Operating Systems
England
Permanent vacancies with a requirement for operating system skills 27,123 17,543 15,489
As % of all permanent IT jobs advertised in England 18.28% 18.72% 21.22%
Number of salaries quoted 14,976 12,938 12,831
10th Percentile £26,250 £27,500 £27,000
25th Percentile £35,250 £36,750 £35,000
Median annual salary (50th Percentile) £52,500 £50,000 £50,000
Median % change year-on-year +5.00% - +5.26%
75th Percentile £71,250 £68,750 £66,250
90th Percentile £88,750 £85,000 £81,000
UK median annual salary £52,500 £50,000 £50,000
% change year-on-year +5.00% - +5.26%

CentOS
Job Vacancy Trend in England

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

Job vacancy trend for CentOS in England

CentOS
Salary Trend in England

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

Salary trend for CentOS in England

CentOS
Salary Histogram in England

Salary distribution for jobs citing CentOS in England over the 6 months to 28 June 2022.

Salary histogram for CentOS in England

CentOS
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the England region over the 6 months to 28 June 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
London -244 197 £67,500 -3.57% 32
South East -6 162 £45,000 -7.69% 11
South West -84 99 £52,500 +10.53% 5
North of England -114 41 £52,500 +11.70% 17
Midlands -77 28 £55,000 +15.18% 10
North West -78 27 £40,000 -20.00% 10
East of England -76 25 £46,250 -7.50% 7
West Midlands -65 15 £55,000 - 7
East Midlands -32 13 £80,000 +100.00% 3
Yorkshire -42 12 £52,500 +40.00% 6
North East -37 2 £52,500 +17.98% 1
CentOS
UK

For the 6 months to 28 June 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 England region with a requirement for CentOS.

1 570 (100.00%) Linux
2 363 (63.68%) Python
3 286 (50.18%) Red Hat
4 273 (47.89%) Bash
5 220 (38.60%) AWS
6 216 (37.89%) Docker
7 215 (37.72%) DevOps
8 211 (37.02%) Ansible
9 168 (29.47%) Agile
10 165 (28.95%) Red Hat Enterprise Linux
11 152 (26.67%) Azure
12 151 (26.49%) Kubernetes
13 150 (26.32%) VMware
14 149 (26.14%) Configuration Management
15 146 (25.61%) MySQL
16 144 (25.26%) Finance
17 143 (25.09%) Ubuntu
18 142 (24.91%) Jenkins
19 137 (24.04%) Git (software)
19 137 (24.04%) Terraform
19 137 (24.04%) Social Skills
20 131 (22.98%) DNS
21 127 (22.28%) Puppet
22 126 (22.11%) Windows
23 121 (21.23%) CI/CD
24 117 (20.53%) SQL
24 117 (20.53%) Java
24 117 (20.53%) Security Cleared
25 113 (19.82%) Perl
26 112 (19.65%) VMware Infrastructure

CentOS
Co-occurring IT Skills in England 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 56 (9.82%) OpenStack
2 45 (7.89%) nginx
3 39 (6.84%) Apache
4 19 (3.33%) Confluence
5 17 (2.98%) MS Exchange
6 14 (2.46%) Ethereum
7 13 (2.28%) Jupyter
8 12 (2.11%) Tomcat
9 8 (1.40%) SharePoint
10 6 (1.05%) Exchange Server 2013
11 5 (0.88%) IIS
12 3 (0.53%) Exchange Server 2010
12 3 (0.53%) WebLogic
13 1 (0.18%) Exchange Server 2007
13 1 (0.18%) JBoss
13 1 (0.18%) Traefik
13 1 (0.18%) WebSphere
Applications
1 7 (1.23%) Microsoft Office
Business Applications
1 13 (2.28%) Ripple
1 13 (2.28%) Ripple XRP
2 3 (0.53%) Fidessa
Cloud Services
1 220 (38.60%) AWS
2 152 (26.67%) Azure
3 47 (8.25%) SaaS
4 41 (7.19%) Microsoft 365
4 41 (7.19%) OpenShift
5 39 (6.84%) Amazon EC2
6 30 (5.26%) GCP
7 27 (4.74%) GitHub
8 20 (3.51%) Cloud Computing
9 19 (3.33%) AWS CloudFormation
10 17 (2.98%) MinIO
10 17 (2.98%) npm
11 13 (2.28%) Azure Active Directory
12 12 (2.11%) Amazon S3
13 11 (1.93%) Azure DevOps
13 11 (1.93%) Virtual Private Cloud
14 9 (1.58%) AWS Direct Connect
14 9 (1.58%) Google Workspace
15 8 (1.40%) Amazon ECS
16 7 (1.23%) Route 53
Communications & Networking
1 131 (22.98%) DNS
2 87 (15.26%) Firewall
3 67 (11.75%) VPN
4 60 (10.53%) TCP/IP
5 58 (10.18%) DHCP
6 56 (9.82%) HTTP
7 46 (8.07%) SAN
8 28 (4.91%) NAS
8 28 (4.91%) VLAN
8 28 (4.91%) WAN
9 26 (4.56%) LAN
10 17 (2.98%) OSPF
11 14 (2.46%) FIX Connectivity
11 14 (2.46%) Network Security
12 11 (1.93%) IPv4
13 10 (1.75%) BGP
13 10 (1.75%) Intranet
14 9 (1.58%) IPsec
14 9 (1.58%) OpenVPN
14 9 (1.58%) SSH
Database & Business Intelligence
1 146 (25.61%) MySQL
2 97 (17.02%) PostgreSQL
3 60 (10.53%) MongoDB
4 39 (6.84%) SQL Server
5 38 (6.67%) InfluxDB
6 37 (6.49%) NoSQL
7 33 (5.79%) Elasticsearch
8 30 (5.26%) Big Data
8 30 (5.26%) MariaDB
8 30 (5.26%) Relational Database
9 27 (4.74%) Redis
10 20 (3.51%) Apache Cassandra
10 20 (3.51%) ArangoDB
10 20 (3.51%) Hadoop
11 15 (2.63%) Amazon RDS
12 13 (2.28%) Parquet
13 12 (2.11%) InterSystems Cache
14 8 (1.40%) RDBMS
15 6 (1.05%) Oracle Database
15 6 (1.05%) Oracle Database 12c
Development Applications
1 142 (24.91%) Jenkins
2 137 (24.04%) Git (software)
3 68 (11.93%) GitLab
4 50 (8.77%) JIRA
5 38 (6.67%) Atlassian Bamboo
6 32 (5.61%) CircleCI
7 31 (5.44%) TeamCity
8 24 (4.21%) Bitbucket
9 20 (3.51%) Gradle
9 20 (3.51%) Maven
9 20 (3.51%) Travis CI
10 19 (3.33%) IntelliJ
10 19 (3.33%) JUnit
10 19 (3.33%) Selenium
11 13 (2.28%) Mockito
11 13 (2.28%) Subversion
12 8 (1.40%) Octopus Deploy
13 6 (1.05%) git-flow
13 6 (1.05%) GoCD
14 5 (0.88%) Chocolatey
General
1 144 (25.26%) Finance
2 137 (24.04%) Social Skills
3 59 (10.35%) Telecoms
4 54 (9.47%) Games
5 44 (7.72%) Analytical Skills
6 39 (6.84%) Inclusion and Diversity
7 34 (5.96%) Public Sector
8 25 (4.39%) Marketing
8 25 (4.39%) Organisational Skills
9 22 (3.86%) Electronics
9 22 (3.86%) Manufacturing
10 18 (3.16%) Law
11 13 (2.28%) Advertising
12 11 (1.93%) Financial Institution
12 11 (1.93%) Legal
13 9 (1.58%) Presentation Skills
14 5 (0.88%) Documentation Skills
15 4 (0.70%) Banking
16 3 (0.53%) Retail
17 2 (0.35%) Influencing Skills
Job Titles
1 138 (24.21%) DevOps Engineer
2 125 (21.93%) Administrator
3 104 (18.25%) Systems Administrator
4 67 (11.75%) Linux Engineer
5 63 (11.05%) Linux Systems Administrator
6 61 (10.70%) Software Engineer
7 60 (10.53%) Linux Administrator
8 44 (7.72%) Infrastructure Engineer
9 39 (6.84%) Junior
10 36 (6.32%) Systems Engineer
11 31 (5.44%) Developer
12 30 (5.26%) DBA
13 27 (4.74%) Analyst
13 27 (4.74%) Junior Systems Administrator
14 26 (4.56%) Senior Systems Administrator
14 26 (4.56%) Unix Administrator
14 26 (4.56%) Unix Systems Administrator
15 25 (4.39%) Senior DevOps
15 25 (4.39%) Senior DevOps Engineer
15 25 (4.39%) Support Engineer
Libraries, Frameworks & Software Standards
1 35 (6.14%) Elastic Stack
2 33 (5.79%) LEMP Stack
3 29 (5.09%) Kafka
4 25 (4.39%) LAMP
5 19 (3.33%) CSS
5 19 (3.33%) HTML
5 19 (3.33%) Vue.js
6 17 (2.98%) FIX Protocol
6 17 (2.98%) Node.js
7 13 (2.28%) COM
7 13 (2.28%) React
8 12 (2.11%) PySpark
9 11 (1.93%) REST
9 11 (1.93%) WebSockets
10 9 (1.58%) CodeIgniter
11 8 (1.40%) Apache NiFi
12 7 (1.23%) CSS3
12 7 (1.23%) HTML5
12 7 (1.23%) JSON
12 7 (1.23%) LAPP Stack
Miscellaneous
1 44 (7.72%) Private Cloud
2 43 (7.54%) Data Centre
3 37 (6.49%) Linux Command Line
4 32 (5.61%) User Experience
5 28 (4.91%) Social Media
6 25 (4.39%) Cyber Defence
6 25 (4.39%) Foreign Exchange (FX)
7 23 (4.04%) Cyberattack
8 20 (3.51%) Blockchain
8 20 (3.51%) Management Information System
8 20 (3.51%) Self-Motivation
9 17 (2.98%) Replication
9 17 (2.98%) Social Network
10 15 (2.63%) Fibre Optics
11 14 (2.46%) Bitcoin
11 14 (2.46%) Derivative
12 13 (2.28%) Litecoin
12 13 (2.28%) Public Cloud
13 12 (2.11%) Blog
13 12 (2.11%) Cybercrime
Operating Systems
1 570 (100.00%) Linux
2 165 (28.95%) Red Hat Enterprise Linux
3 143 (25.09%) Ubuntu
4 126 (22.11%) Windows
5 70 (12.28%) Windows Server 2016
6 57 (10.00%) Windows Server
7 56 (9.82%) Unix
7 56 (9.82%) Windows Server 2012
8 52 (9.12%) Windows Server 2019
9 47 (8.25%) Debian
10 21 (3.68%) Windows 10
11 19 (3.33%) Oracle Linux
12 16 (2.81%) Amazon Linux
13 14 (2.46%) Android
14 12 (2.11%) Apple iOS
14 12 (2.11%) Solaris
15 9 (1.58%) VMS
16 7 (1.23%) Scientific Linux
16 7 (1.23%) Windows Server 2008
17 6 (1.05%) SUSE
Processes & Methodologies
1 215 (37.72%) DevOps
2 168 (29.47%) Agile
3 149 (26.14%) Configuration Management
4 121 (21.23%) CI/CD
5 104 (18.25%) Problem-Solving
6 80 (14.04%) Software Engineering
7 75 (13.16%) Continuous Integration
8 72 (12.63%) Migration
9 64 (11.23%) Infrastructure as Code
10 62 (10.88%) Test Automation
11 60 (10.53%) Open Source
12 58 (10.18%) Computer Science
12 58 (10.18%) ITIL
13 56 (9.82%) High Availability
14 55 (9.65%) Load Balancing
15 53 (9.30%) Mentoring
16 50 (8.77%) Infrastructure Engineering
17 49 (8.60%) Task Automation
18 48 (8.42%) Site Reliability Engineering
19 46 (8.07%) Storage Management
Programming Languages
1 363 (63.68%) Python
2 273 (47.89%) Bash
3 117 (20.53%) Java
3 117 (20.53%) SQL
4 113 (19.82%) Perl
5 93 (16.32%) PowerShell
6 75 (13.16%) JavaScript
7 72 (12.63%) PHP
8 55 (9.65%) Go
8 55 (9.65%) Shell Script
9 41 (7.19%) C++
10 30 (5.26%) Ruby
11 29 (5.09%) C
11 29 (5.09%) Groovy
12 12 (2.11%) Kotlin
12 12 (2.11%) TypeScript
13 9 (1.58%) PL/SQL
14 8 (1.40%) Bourne shell
15 6 (1.05%) Apple Swift
15 6 (1.05%) Korn
Qualifications
1 117 (20.53%) Security Cleared
2 77 (13.51%) SC Cleared
3 45 (7.89%) Degree
4 32 (5.61%) AWS Certification
5 26 (4.56%) Computer Science Degree
6 17 (2.98%) DV Cleared
7 16 (2.81%) Cisco Certification
8 14 (2.46%) CCNA
9 13 (2.28%) Microsoft Certification
10 11 (1.93%) CCA
11 10 (1.75%) MCSE
12 9 (1.58%) RHCE
12 9 (1.58%) RHCSA
13 6 (1.05%) OCA
13 6 (1.05%) OCP
13 6 (1.05%) Oracle Certification
14 4 (0.70%) JNCIA
15 3 (0.53%) Linux+ Certification
15 3 (0.53%) LPIC
15 3 (0.53%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 23 (4.04%) PCI DSS
2 18 (3.16%) QA
3 9 (1.58%) ISO/IEC 27001
4 6 (1.05%) Accessibility
5 3 (0.53%) HIPAA
5 3 (0.53%) NCSC
5 3 (0.53%) Sarbanes-Oxley
6 2 (0.35%) GDPR
6 2 (0.35%) IASME
6 2 (0.35%) SLA
7 1 (0.18%) PMO
System Software
1 216 (37.89%) Docker
2 112 (19.65%) VMware Infrastructure
3 63 (11.05%) Active Directory
4 35 (6.14%) vSphere
5 28 (4.91%) Hyper-V
6 25 (4.39%) Apache ZooKeeper
7 20 (3.51%) VMware ESXi
8 18 (3.16%) Citrix Hypervisor
9 14 (2.46%) iptables
10 13 (2.28%) NFS
11 11 (1.93%) Dovecot
11 11 (1.93%) Postfix
12 9 (1.58%) Lustre
12 9 (1.58%) Slurm Workload Manager
13 6 (1.05%) KVM
13 6 (1.05%) Veritas Cluster Server
13 6 (1.05%) Virtual Servers
14 5 (0.88%) etcd
14 5 (0.88%) Firmware
15 4 (0.70%) LXC
Systems Management
1 211 (37.02%) Ansible
2 151 (26.49%) Kubernetes
3 137 (24.04%) Terraform
4 127 (22.28%) Puppet
5 56 (9.82%) Grafana
6 51 (8.95%) Prometheus
7 42 (7.37%) Opscode Chef
8 33 (5.79%) ZABBIX
9 30 (5.26%) HAProxy
10 24 (4.21%) Nagios
11 23 (4.04%) Packer
12 20 (3.51%) Docker Swarm
13 17 (2.98%) Graylog
14 14 (2.46%) Red Hat Spacewalk
15 13 (2.28%) Red Hat Satellite
15 13 (2.28%) vCenter Server
16 12 (2.11%) Kibana
17 10 (1.75%) Failover Clustering
18 8 (1.40%) Graphite
18 8 (1.40%) Oracle ZFS
Vendors
1 286 (50.18%) Red Hat
2 150 (26.32%) VMware
3 99 (17.37%) Microsoft
4 74 (12.98%) Oracle
5 46 (8.07%) Cisco
6 40 (7.02%) Juniper
7 38 (6.67%) Splunk
8 30 (5.26%) Google
9 27 (4.74%) F5
10 22 (3.86%) SAP
11 21 (3.68%) HP
12 17 (2.98%) Fortinet
13 16 (2.81%) SaltStack
14 13 (2.28%) ServiceNow
15 12 (2.11%) Foundry
15 12 (2.11%) Palantir
15 12 (2.11%) Veeam
16 11 (1.93%) Synology
17 10 (1.75%) Citrix
17 10 (1.75%) Perforce