Period
to 24 July 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 24 July 2021 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > South East
6 months to
24 Jul 2021
Same period 2020 Same period 2019
Rank 340 294 329
Rank change year-on-year -46 +35 +66
Permanent jobs citing CentOS 91 54 201
As % of all permanent jobs advertised in the South East 0.55% 0.44% 0.76%
As % of the Operating Systems category 2.58% 1.86% 3.00%
Number of salaries quoted 59 42 191
10th Percentile £36,250 £34,000 £28,250
25th Percentile £40,625 £41,250 £37,500
Median annual salary (50th Percentile) £47,500 £45,000 £50,000
Median % change year-on-year +5.56% -10.00% -9.09%
75th Percentile £57,500 £53,250 £65,000
90th Percentile £73,000 £60,000 £73,750
England median annual salary £55,000 £52,500 £50,000
% change year-on-year +4.76% +5.00% -4.76%

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 3,522 2,906 6,705
As % of all permanent IT jobs advertised in the South East 21.46% 23.71% 25.34%
Number of salaries quoted 2,526 2,425 5,560
10th Percentile £26,813 £27,500 £25,000
25th Percentile £35,000 £35,000 £31,250
Median annual salary (50th Percentile) £47,500 £45,000 £45,000
Median % change year-on-year +5.56% - +5.88%
75th Percentile £62,500 £60,000 £58,750
90th Percentile £70,000 £70,000 £70,000
England median annual salary £50,000 £50,000 £47,500
% change year-on-year - +5.26% -

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 24 July 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 24 July 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
Thames Valley -25 35 £45,000 -5.26% 9
Berkshire -20 33 £45,000 -5.26% 7
Hampshire -72 29 £50,000 +17.65% 3
Surrey -26 18 £41,000 -13.68% 6
Buckinghamshire -18 2 £40,000 -11.11%
West Sussex - 1 £32,500 -
CentOS
England

For the 6 months to 24 July 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 91 (100.00%) Linux
2 58 (63.74%) Python
3 49 (53.85%) Ubuntu
4 45 (49.45%) Ansible
5 39 (42.86%) Red Hat Enterprise Linux
6 38 (41.76%) Bash Shell
7 36 (39.56%) Agile Software Development
8 35 (38.46%) AWS
9 32 (35.16%) Azure
10 31 (34.07%) VMware
10 31 (34.07%) Configuration Management
11 30 (32.97%) Security Cleared
11 30 (32.97%) DevOps
12 28 (30.77%) PostgreSQL
13 27 (29.67%) SC Cleared
14 25 (27.47%) Debian
15 24 (26.37%) JavaScript
16 23 (25.27%) Scrum
17 21 (23.08%) Firewall
17 21 (23.08%) Software Engineering
17 21 (23.08%) Docker
18 20 (21.98%) Open Source
18 20 (21.98%) MySQL
19 18 (19.78%) SQL
19 18 (19.78%) C++
19 18 (19.78%) Finance
19 18 (19.78%) VMware Infrastructure
19 18 (19.78%) Cybersecurity
19 18 (19.78%) Terraform
19 18 (19.78%) Prototyping

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 (12.09%) nginx
2 8 (8.79%) Elasticsearch
3 7 (7.69%) Apache
4 5 (5.49%) SharePoint
5 3 (3.30%) Confluence
5 3 (3.30%) IIS
6 2 (2.20%) GlassFish
6 2 (2.20%) JBoss
6 2 (2.20%) Tomcat
7 1 (1.10%) Skype for Business
Applications
1 1 (1.10%) Microsoft Office
Cloud Services
1 35 (38.46%) AWS
2 32 (35.16%) Azure
3 16 (17.58%) Amazon EC2
4 14 (15.38%) SaaS
5 10 (10.99%) Virtual Private Cloud
6 9 (9.89%) Amazon S3
6 9 (9.89%) Microsoft 365
7 7 (7.69%) GitHub
8 6 (6.59%) AWS CloudFormation
8 6 (6.59%) Azure Active Directory
9 5 (5.49%) Amazon CloudWatch
9 5 (5.49%) AWS Direct Connect
10 4 (4.40%) Amazon ECS
10 4 (4.40%) Amazon GuardDuty
10 4 (4.40%) AWS Fargate
10 4 (4.40%) AWS Lambda
10 4 (4.40%) IaaS
10 4 (4.40%) PaaS
10 4 (4.40%) Serverless
11 3 (3.30%) OneDrive
Communications & Networking
1 21 (23.08%) Firewall
2 17 (18.68%) SSH
3 14 (15.38%) DNS
4 11 (12.09%) Network Security
5 8 (8.79%) TCP/IP
5 8 (8.79%) VPN
6 6 (6.59%) DHCP
6 6 (6.59%) HTTP
7 5 (5.49%) BGP
7 5 (5.49%) Broadband
7 5 (5.49%) HTTPS
7 5 (5.49%) IPsec
7 5 (5.49%) IPv6
7 5 (5.49%) OpenVPN
7 5 (5.49%) SNMP
8 3 (3.30%) SAN
9 2 (2.20%) Internet
9 2 (2.20%) LAN
9 2 (2.20%) NAS
10 1 (1.10%) Cisco ASA
Database & Business Intelligence
1 28 (30.77%) PostgreSQL
2 20 (21.98%) MySQL
3 8 (8.79%) Amazon RDS
4 5 (5.49%) Big Data
5 4 (4.40%) SQL Server
6 3 (3.30%) GIS
6 3 (3.30%) MariaDB
6 3 (3.30%) NoSQL
6 3 (3.30%) Tableau
6 3 (3.30%) Tableau Server
7 2 (2.20%) MongoDB
7 2 (2.20%) RDBMS
7 2 (2.20%) Relational Database
Development Applications
1 11 (12.09%) Git (software)
1 11 (12.09%) JIRA
2 10 (10.99%) GitLab
3 9 (9.89%) Jenkins
4 8 (8.79%) Bitbucket
5 5 (5.49%) Atlassian Bamboo
6 2 (2.20%) GoCD
6 2 (2.20%) Oracle APEX
6 2 (2.20%) TeamCity
General
1 18 (19.78%) Finance
2 9 (9.89%) Social Skills
3 8 (8.79%) Telecoms
4 5 (5.49%) Public Sector
5 2 (2.20%) Local Government
6 1 (1.10%) Documentation Skills
6 1 (1.10%) Inclusion and Diversity
Job Titles
1 19 (20.88%) Architect
2 17 (18.68%) Data Architect
3 16 (17.58%) DevOps Engineer
3 16 (17.58%) Infrastructure Engineer
4 12 (13.19%) Linux Engineer
5 11 (12.09%) Cloud Engineer
6 8 (8.79%) AWS Engineer
7 7 (7.69%) Cloud Infrastructure Engineer
8 6 (6.59%) Administrator
8 6 (6.59%) Developer
8 6 (6.59%) Python Developer
8 6 (6.59%) Systems Administrator
9 5 (5.49%) Network Engineer
9 5 (5.49%) Network Infrastructure Engineer
9 5 (5.49%) Principal Engineer
9 5 (5.49%) Support Engineer
9 5 (5.49%) Systems Engineer
10 4 (4.40%) AWS DevOps
10 4 (4.40%) Linux Administrator
10 4 (4.40%) Linux Systems Administrator
Libraries, Frameworks & Software Standards
1 11 (12.09%) LEMP Stack
2 6 (6.59%) Django
2 6 (6.59%) Flask
3 5 (5.49%) LAMP
4 4 (4.40%) Elastic Stack
4 4 (4.40%) LDAP
5 3 (3.30%) LAPP Stack
6 2 (2.20%) HTML
7 1 (1.10%) .NET
7 1 (1.10%) REST
7 1 (1.10%) SAML
Miscellaneous
1 8 (8.79%) Linux Command Line
1 8 (8.79%) Public Cloud
2 6 (6.59%) Distributed Denial-of-Service
3 5 (5.49%) Data Centre
4 4 (4.40%) Cybercrime
5 2 (2.20%) Legacy Applications
6 1 (1.10%) Clustering
6 1 (1.10%) Device Driver
6 1 (1.10%) EPoS
6 1 (1.10%) PKI
6 1 (1.10%) PMI
6 1 (1.10%) Video\Live Streaming
Operating Systems
1 91 (100.00%) Linux
2 49 (53.85%) Ubuntu
3 39 (42.86%) Red Hat Enterprise Linux
4 25 (27.47%) Debian
5 17 (18.68%) Windows
6 8 (8.79%) Windows Server
7 4 (4.40%) Amazon Linux
8 3 (3.30%) Windows 10
8 3 (3.30%) Windows Server 2016
8 3 (3.30%) Windows Server 2019
9 2 (2.20%) Solaris
9 2 (2.20%) Unix
9 2 (2.20%) VMS
10 1 (1.10%) Windows Server 2012
Processes & Methodologies
1 36 (39.56%) Agile Software Development
2 31 (34.07%) Configuration Management
3 30 (32.97%) DevOps
4 23 (25.27%) Scrum
5 21 (23.08%) Software Engineering
6 20 (21.98%) Open Source
7 18 (19.78%) Cybersecurity
7 18 (19.78%) Infrastructure Engineering
7 18 (19.78%) Prototyping
8 17 (18.68%) Coaching
8 17 (18.68%) Integration Testing
8 17 (18.68%) Rapid Prototyping
8 17 (18.68%) Software Architecture
9 16 (17.58%) Migration
10 11 (12.09%) High Availability
11 8 (8.79%) Continuous Integration
11 8 (8.79%) Decision-Making
11 8 (8.79%) Deployment Automation
11 8 (8.79%) E-Commerce
12 7 (7.69%) Storage Management
Programming Languages
1 58 (63.74%) Python
2 38 (41.76%) Bash Shell
3 24 (26.37%) JavaScript
4 18 (19.78%) C++
4 18 (19.78%) SQL
5 17 (18.68%) Java
6 11 (12.09%) PowerShell
7 10 (10.99%) Perl
7 10 (10.99%) PHP
8 7 (7.69%) C
9 5 (5.49%) Go
9 5 (5.49%) Ruby
10 4 (4.40%) Shell Script
Qualifications
1 30 (32.97%) Security Cleared
2 27 (29.67%) SC Cleared
3 8 (8.79%) AWS Certification
4 3 (3.30%) Degree
4 3 (3.30%) RHCE
4 3 (3.30%) RHCSA
5 2 (2.20%) DBS Check
5 2 (2.20%) DV Cleared
6 1 (1.10%) A+ Certification
6 1 (1.10%) CCNA
6 1 (1.10%) Cisco Certification
6 1 (1.10%) CompTIA Security+
6 1 (1.10%) JNCIA
6 1 (1.10%) MCSA
6 1 (1.10%) Microsoft Certification
6 1 (1.10%) Network+ Certification
6 1 (1.10%) PMI Certification
Quality Assurance & Compliance
1 3 (3.30%) ISO/IEC 27001
2 1 (1.10%) Cyber Essentials
2 1 (1.10%) PCI DSS
2 1 (1.10%) SLA
System Software
1 21 (23.08%) Docker
2 18 (19.78%) VMware Infrastructure
3 15 (16.48%) vSphere
4 13 (14.29%) Active Directory
5 7 (7.69%) iptables
6 3 (3.30%) Virtual Machines
7 2 (2.20%) Postfix
7 2 (2.20%) Sendmail
8 1 (1.10%) Hyper-V
8 1 (1.10%) KVM
8 1 (1.10%) Oracle RAC
8 1 (1.10%) Snort
Systems Management
1 45 (49.45%) Ansible
2 18 (19.78%) Terraform
3 16 (17.58%) Puppet
4 13 (14.29%) Kubernetes
5 8 (8.79%) Grafana
6 7 (7.69%) ZABBIX
7 6 (6.59%) Packer
8 5 (5.49%) Icinga
9 4 (4.40%) Opscode Chef
10 3 (3.30%) Consul
10 3 (3.30%) Docker Swarm
10 3 (3.30%) Graphite
10 3 (3.30%) HAProxy
10 3 (3.30%) Prometheus
11 2 (2.20%) HP Data Protector
11 2 (2.20%) Oracle Enterprise Manager
11 2 (2.20%) Oracle ZFS
11 2 (2.20%) Single Sign-On
11 2 (2.20%) vCenter Server
12 1 (1.10%) SCCM
Vendors
1 31 (34.07%) VMware
2 16 (17.58%) Microsoft
3 14 (15.38%) Red Hat
4 8 (8.79%) Juniper
5 7 (7.69%) Oracle
6 6 (6.59%) Atlassian
7 4 (4.40%) Apple
7 4 (4.40%) Cisco
7 4 (4.40%) IBM
8 3 (3.30%) NetApp
8 3 (3.30%) Veeam
9 2 (2.20%) Google
9 2 (2.20%) HP
9 2 (2.20%) NEC
9 2 (2.20%) Nokia
9 2 (2.20%) Northgate
9 2 (2.20%) Splunk
10 1 (1.10%) Blue Coat
10 1 (1.10%) CheckPoint
10 1 (1.10%) Mitel