Period
to 16 May 2021

The following table provides summary statistics for permanent job vacancies advertised in the South East 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 16 May 2021 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > South East
6 months to
16 May 2021
Same period 2020 Same period 2019
Rank 296 361 340
Rank change year-on-year +65 -21 +24
Permanent jobs citing CentOS 82 65 185
As % of all permanent jobs advertised in the South East 0.62% 0.37% 0.71%
As % of the Operating Systems category 2.88% 1.59% 2.82%
Number of salaries quoted 62 55 175
10th Percentile £32,425 £31,250 £26,750
25th Percentile £41,438 £38,125 £36,875
Median annual salary (50th Percentile) £47,500 £45,000 £55,000
Median % change year-on-year +5.56% -18.18% +15.79%
75th Percentile £57,500 £57,500 £66,750
90th Percentile £72,000 £67,250 £75,000
England median annual salary £55,000 £55,000 £52,500
% change year-on-year - +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 the South East with a requirement for operating system skills.

All Operating Systems
South East
Permanent vacancies with a requirement for operating system skills 2,844 4,084 6,560
As % of all permanent IT jobs advertised in the South East 21.33% 23.46% 25.18%
Number of salaries quoted 2,237 3,412 5,355
10th Percentile £27,500 £26,250 £25,000
25th Percentile £35,000 £33,000 £31,250
Median annual salary (50th Percentile) £47,500 £45,000 £45,000
Median % change year-on-year +5.56% - +5.88%
75th Percentile £61,250 £58,750 £58,750
90th Percentile £69,700 £70,000 £69,975
England median annual salary £50,000 £48,000 £47,500
% change year-on-year +4.17% +1.05% -

CentOS
Job Vacancy Trend in the South East

Job postings citing CentOS as a proportion of all IT jobs advertised in the South East.

Job vacancy trend for CentOS in the South East

CentOS
Salary Trend in the South East

3-month moving average salary quoted in jobs citing CentOS in the South East.

Salary trend for CentOS in the South East

CentOS
Salary Histogram in the South East

Salary distribution for jobs citing CentOS in the South East over the 6 months to 16 May 2021.

Salary histogram for CentOS in the South East

CentOS
Job Locations in the South East

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the South East region over the 6 months to 16 May 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
Hampshire +47 46 £50,000 +18.34% 6
Thames Valley +35 16 £45,000 -14.29% 13
Berkshire +25 14 £45,000 -25.00% 9
Surrey +11 12 £31,000 -31.11% 1
West Sussex - 2 £32,500 -
Oxfordshire +14 1 £65,000 +30.00% 3
Buckinghamshire +13 1 £40,000 -11.11% 1
CentOS
England

For the 6 months to 16 May 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 South East region with a requirement for CentOS.

1 82 (100.00%) Linux
2 46 (56.10%) VMware
3 39 (47.56%) Ubuntu
4 36 (43.90%) Azure
5 35 (42.68%) AWS
5 35 (42.68%) Ansible
5 35 (42.68%) DevOps
5 35 (42.68%) PostgreSQL
6 32 (39.02%) Python
7 27 (32.93%) Microsoft
7 27 (32.93%) VMware Infrastructure
8 26 (31.71%) Docker
9 25 (30.49%) Agile Software Development
10 24 (29.27%) vSphere
11 22 (26.83%) MySQL
11 22 (26.83%) Windows
12 21 (25.61%) SQL
12 21 (25.61%) Firewall
12 21 (25.61%) Security Cleared
13 20 (24.39%) Red Hat
13 20 (24.39%) Terraform
14 19 (23.17%) Infrastructure Engineering
14 19 (23.17%) Configuration Management
15 17 (20.73%) SC Cleared
15 17 (20.73%) Bash Shell
16 16 (19.51%) PowerShell
16 16 (19.51%) Active Directory
17 15 (18.29%) Kubernetes
18 14 (17.07%) Puppet
18 14 (17.07%) Migration

CentOS
Co-occurring IT Skills in the South East 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 11 (13.41%) Apache
2 10 (12.20%) Elasticsearch
2 10 (12.20%) nginx
3 8 (9.76%) IIS
4 6 (7.32%) GlassFish
5 5 (6.10%) SharePoint
6 2 (2.44%) Confluence
6 2 (2.44%) JBoss
7 1 (1.22%) MS Exchange
7 1 (1.22%) Skype for Business
7 1 (1.22%) Tomcat
Applications
1 1 (1.22%) Microsoft Office
Cloud Services
1 36 (43.90%) Azure
2 35 (42.68%) AWS
3 9 (10.98%) Amazon EC2
3 9 (10.98%) Microsoft 365
4 6 (7.32%) Azure Active Directory
5 5 (6.10%) AWS Direct Connect
5 5 (6.10%) GitHub
5 5 (6.10%) SaaS
6 4 (4.88%) Amazon S3
7 3 (3.66%) Amazon CloudWatch
7 3 (3.66%) Cloud Computing
7 3 (3.66%) Virtual Private Cloud
8 2 (2.44%) GCP
8 2 (2.44%) OneDrive
9 1 (1.22%) AWS CloudFormation
9 1 (1.22%) IaaS
9 1 (1.22%) IBM Cloud
9 1 (1.22%) PaaS
Communications & Networking
1 21 (25.61%) Firewall
2 13 (15.85%) DNS
3 11 (13.41%) DHCP
4 8 (9.76%) Network Security
4 8 (9.76%) TCP/IP
5 6 (7.32%) VPN
6 5 (6.10%) BGP
6 5 (6.10%) Broadband
6 5 (6.10%) HTTPS
6 5 (6.10%) IPsec
6 5 (6.10%) IPv6
6 5 (6.10%) OpenVPN
6 5 (6.10%) SNMP
7 3 (3.66%) NAS
7 3 (3.66%) SAN
8 2 (2.44%) Internet
8 2 (2.44%) VLAN
8 2 (2.44%) Wi-Fi
9 1 (1.22%) Skype
9 1 (1.22%) TACACS
Database & Business Intelligence
1 35 (42.68%) PostgreSQL
2 22 (26.83%) MySQL
3 8 (9.76%) Big Data
3 8 (9.76%) MariaDB
4 3 (3.66%) NoSQL
4 3 (3.66%) SQL Server
5 2 (2.44%) Amazon RDS
5 2 (2.44%) RDBMS
5 2 (2.44%) Relational Database
5 2 (2.44%) Tableau
5 2 (2.44%) Tableau Server
6 1 (1.22%) GIS
Development Applications
1 13 (15.85%) Git (software)
1 13 (15.85%) GitLab
1 13 (15.85%) Jenkins
2 9 (10.98%) JIRA
3 6 (7.32%) TeamCity
4 3 (3.66%) Atlassian Bamboo
4 3 (3.66%) Bitbucket
General
1 8 (9.76%) Social Skills
2 6 (7.32%) Public Sector
3 5 (6.10%) Telecoms
4 3 (3.66%) Marketing
5 2 (2.44%) Analytical Skills
5 2 (2.44%) Local Government
6 1 (1.22%) Aerospace
6 1 (1.22%) Documentation Skills
6 1 (1.22%) Finance
Job Titles
1 20 (24.39%) DevOps Engineer
2 16 (19.51%) Infrastructure Engineer
2 16 (19.51%) Linux Engineer
3 10 (12.20%) Developer
4 9 (10.98%) Systems Engineer
5 7 (8.54%) Linux Systems Engineer
5 7 (8.54%) Network Infrastructure Engineer
5 7 (8.54%) Python Developer
6 6 (7.32%) Cloud Engineer
6 6 (7.32%) Network Engineer
6 6 (7.32%) Platform Engineer
7 5 (6.10%) IT Engineer
7 5 (6.10%) Principal Engineer
8 4 (4.88%) Administrator
8 4 (4.88%) Azure Engineer
8 4 (4.88%) Cloud Infrastructure Engineer
8 4 (4.88%) Full Stack Developer
8 4 (4.88%) Systems Administrator
9 3 (3.66%) Consultant
9 3 (3.66%) Senior Developer
Libraries, Frameworks & Software Standards
1 10 (12.20%) LEMP Stack
2 8 (9.76%) LAMP
3 7 (8.54%) Django
3 7 (8.54%) Flask
4 6 (7.32%) Web Services
5 4 (4.88%) Elastic Stack
6 3 (3.66%) .NET
6 3 (3.66%) CakePHP
6 3 (3.66%) CSS
6 3 (3.66%) HTML
6 3 (3.66%) jQuery
6 3 (3.66%) LAPP Stack
6 3 (3.66%) Laravel
6 3 (3.66%) Twitter Bootstrap
7 1 (1.22%) Middleware
Miscellaneous
1 7 (8.54%) Public Cloud
2 6 (7.32%) Linux Command Line
3 5 (6.10%) Distributed Denial-of-Service
4 4 (4.88%) Cybercrime
4 4 (4.88%) Data Centre
5 2 (2.44%) PMI
6 1 (1.22%) PKI
Operating Systems
1 82 (100.00%) Linux
2 39 (47.56%) Ubuntu
3 22 (26.83%) Windows
4 13 (15.85%) Red Hat Enterprise Linux
5 9 (10.98%) Debian
6 8 (9.76%) Windows 10
6 8 (9.76%) Windows Server
6 8 (9.76%) Windows Server 2016
7 5 (6.10%) Windows Server 2008
7 5 (6.10%) Windows Server 2012
8 4 (4.88%) Windows 7
9 3 (3.66%) VMS
9 3 (3.66%) Windows Server 2019
10 2 (2.44%) Amazon Linux
10 2 (2.44%) Solaris
10 2 (2.44%) Unix
11 1 (1.22%) FreeNAS
Processes & Methodologies
1 35 (42.68%) DevOps
2 25 (30.49%) Agile Software Development
3 19 (23.17%) Configuration Management
3 19 (23.17%) Infrastructure Engineering
4 14 (17.07%) Migration
5 13 (15.85%) E-Commerce
6 12 (14.63%) Continuous Integration
6 12 (14.63%) Web Development
7 11 (13.41%) Continuous Delivery
8 9 (10.98%) Decision-Making
8 9 (10.98%) High Availability
9 8 (9.76%) Deployment Automation
9 8 (9.76%) Software Delivery
9 8 (9.76%) Storage Management
10 7 (8.54%) IT Strategy
10 7 (8.54%) Release Management
10 7 (8.54%) TDD
11 6 (7.32%) Disaster Recovery
12 5 (6.10%) ITIL
12 5 (6.10%) Software Engineering
Programming Languages
1 32 (39.02%) Python
2 21 (25.61%) SQL
3 17 (20.73%) Bash Shell
4 16 (19.51%) PowerShell
5 10 (12.20%) JavaScript
6 6 (7.32%) PHP
7 5 (6.10%) Ruby
8 4 (4.88%) C
9 3 (3.66%) Go
9 3 (3.66%) PHP 5
10 1 (1.22%) Java
10 1 (1.22%) Perl
10 1 (1.22%) Shell Script
10 1 (1.22%) Tcl
Qualifications
1 21 (25.61%) Security Cleared
2 17 (20.73%) SC Cleared
3 6 (7.32%) AWS Certification
4 3 (3.66%) Degree
4 3 (3.66%) DV Cleared
4 3 (3.66%) RHCE
4 3 (3.66%) RHCSA
5 2 (2.44%) DBS Check
5 2 (2.44%) PMI Certification
6 1 (1.22%) CCNA
6 1 (1.22%) Cisco Certification
6 1 (1.22%) MCP
6 1 (1.22%) MCSA
6 1 (1.22%) Microsoft Certification
Quality Assurance & Compliance
1 4 (4.88%) ISO/IEC 27001
2 1 (1.22%) Cyber Essentials
2 1 (1.22%) SLA
System Software
1 27 (32.93%) VMware Infrastructure
2 26 (31.71%) Docker
3 24 (29.27%) vSphere
4 16 (19.51%) Active Directory
5 7 (8.54%) iptables
6 5 (6.10%) VMware ESXi
7 3 (3.66%) Hyper-V
7 3 (3.66%) Virtual Machines
8 2 (2.44%) KVM
8 2 (2.44%) Postfix
8 2 (2.44%) Sendmail
9 1 (1.22%) NFS
9 1 (1.22%) Samba
9 1 (1.22%) Slurm Workload Manager
9 1 (1.22%) Snort
9 1 (1.22%) VirtualBox
Systems Management
1 35 (42.68%) Ansible
2 20 (24.39%) Terraform
3 15 (18.29%) Kubernetes
4 14 (17.07%) Puppet
5 9 (10.98%) Grafana
5 9 (10.98%) ZABBIX
6 6 (7.32%) HAProxy
7 5 (6.10%) Icinga
7 5 (6.10%) Oracle ZFS
7 5 (6.10%) SCCM
8 4 (4.88%) Packer
8 4 (4.88%) Prometheus
9 3 (3.66%) Consul
9 3 (3.66%) Docker Swarm
9 3 (3.66%) Graphite
9 3 (3.66%) vCenter Server
10 2 (2.44%) HP Data Protector
10 2 (2.44%) Opscode Chef
10 2 (2.44%) Oracle Enterprise Manager
11 1 (1.22%) Nagios
Vendors
1 46 (56.10%) VMware
2 27 (32.93%) Microsoft
3 20 (24.39%) Red Hat
4 10 (12.20%) Atlassian
5 9 (10.98%) Juniper
6 7 (8.54%) Oracle
7 5 (6.10%) IBM
8 3 (3.66%) Cisco
8 3 (3.66%) NetApp
8 3 (3.66%) Veeam
9 2 (2.44%) Fujitsu
9 2 (2.44%) HP
9 2 (2.44%) NEC
9 2 (2.44%) Northgate
10 1 (1.22%) Dell
10 1 (1.22%) Google
10 1 (1.22%) Nokia
10 1 (1.22%) Salesforce.com
10 1 (1.22%) Splunk