Period
to 30 November 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 30 November 2021 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > South East
6 months to
30 Nov 2021
Same period 2020 Same period 2019
Rank 330 248 377
Rank change year-on-year -82 +129 -39
Permanent jobs citing CentOS 113 65 136
As % of all permanent jobs advertised in the South East 0.61% 0.74% 0.55%
As % of the Operating Systems category 3.02% 3.08% 2.14%
Number of salaries quoted 71 50 127
10th Percentile £37,500 £29,625 £30,000
25th Percentile £39,000 £41,250 £37,750
Median annual salary (50th Percentile) £45,000 £47,500 £50,000
Median % change year-on-year -5.26% -5.00% -9.09%
75th Percentile £48,375 £55,000 £63,750
90th Percentile £68,750 £60,000 £67,500
England median annual salary £54,000 £51,250 £52,000
% change year-on-year +5.37% -1.44% -5.45%

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 the South East with a requirement for operating system skills.

All Operating Systems
South East
Permanent vacancies with a requirement for operating system skills 3,739 2,109 6,344
As % of all permanent IT jobs advertised in the South East 20.31% 23.90% 25.67%
Number of salaries quoted 2,612 1,744 5,371
10th Percentile £25,750 £26,250 £23,750
25th Percentile £32,581 £32,500 £30,000
Median annual salary (50th Percentile) £47,500 £46,000 £42,500
Median % change year-on-year +3.26% +8.24% -
75th Percentile £62,500 £60,000 £57,500
90th Percentile £73,750 £68,750 £68,750
England median annual salary £50,000 £50,000 £45,000
% change year-on-year - +11.11% -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 30 November 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 30 November 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 -61 39 £50,000 -2.44% 8
Surrey -45 33 £41,000 -3.53% 5
Hampshire -114 31 £45,000 -17.43% 4
Berkshire -53 27 £47,500 - 2
Oxfordshire -21 9 £75,000 +15.38% 2
Buckinghamshire - 3 £53,250 - 4
Kent -44 2 £47,000 -6.00%
Home Counties - 2 - -
CentOS
England

For the 6 months to 30 November 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.

1 113 (100.00%) Linux
2 98 (86.73%) Python
3 65 (57.52%) Red Hat Enterprise Linux
4 50 (44.25%) Bash Shell
5 48 (42.48%) Ubuntu
6 42 (37.17%) Software Engineering
7 41 (36.28%) Agile Software Development
7 41 (36.28%) C++
8 35 (30.97%) Git (software)
9 34 (30.09%) DevOps
10 33 (29.20%) AWS
11 32 (28.32%) Ansible
11 32 (28.32%) PHP
12 31 (27.43%) Perl
13 30 (26.55%) DNS
13 30 (26.55%) Migration
14 29 (25.66%) Debian
14 29 (25.66%) SaaS
15 27 (23.89%) HTTP
15 27 (23.89%) MySQL
16 25 (22.12%) Java
16 25 (22.12%) JavaScript
17 23 (20.35%) Scrum
17 23 (20.35%) C
17 23 (20.35%) Social Skills
18 22 (19.47%) Telecoms
18 22 (19.47%) Multithreading
18 22 (19.47%) Integration Testing
19 21 (18.58%) SC Cleared
19 21 (18.58%) Security Cleared

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 7 (6.19%) Apache
2 5 (4.42%) nginx
3 3 (2.65%) Confluence
3 3 (2.65%) IIS
3 3 (2.65%) SharePoint
3 3 (2.65%) Tomcat
4 2 (1.77%) Skype for Business
5 1 (0.88%) OpenStack
5 1 (0.88%) WordPress
Cloud Services
1 33 (29.20%) AWS
2 29 (25.66%) SaaS
3 10 (8.85%) Azure
4 9 (7.96%) AWS CloudFormation
5 8 (7.08%) Amazon EC2
5 8 (7.08%) Virtual Private Cloud
6 7 (6.19%) IaaS
7 6 (5.31%) Amazon S3
7 6 (5.31%) AWS Lambda
7 6 (5.31%) Serverless
8 5 (4.42%) GitHub
8 5 (4.42%) PaaS
9 4 (3.54%) Amazon CloudWatch
9 4 (3.54%) Amazon ECS
9 4 (3.54%) Amazon EKS
9 4 (3.54%) Amazon GuardDuty
9 4 (3.54%) AWS Fargate
9 4 (3.54%) GCP
10 3 (2.65%) Microsoft 365
11 2 (1.77%) CloudFront
Communications & Networking
1 30 (26.55%) DNS
2 27 (23.89%) HTTP
3 17 (15.04%) SSH
4 6 (5.31%) Firewall
5 4 (3.54%) TCP/IP
5 4 (3.54%) VPN
6 3 (2.65%) DHCP
6 3 (2.65%) Network Security
6 3 (2.65%) VLAN
7 2 (1.77%) MPLS
7 2 (1.77%) PBX
7 2 (1.77%) Skype
7 2 (1.77%) Wi-Fi
8 1 (0.88%) Cisco ASA
8 1 (0.88%) Internet
8 1 (0.88%) LAN
8 1 (0.88%) SAN
8 1 (0.88%) SSL
8 1 (0.88%) WAN
Database & Business Intelligence
1 27 (23.89%) MySQL
2 12 (10.62%) PostgreSQL
3 9 (7.96%) MongoDB
3 9 (7.96%) Redis
4 7 (6.19%) NoSQL
5 6 (5.31%) Amazon RDS
6 4 (3.54%) SQL Server
7 2 (1.77%) Amazon DynamoDB
7 2 (1.77%) GIS
7 2 (1.77%) MariaDB
8 1 (0.88%) RDBMS
8 1 (0.88%) Relational Database
8 1 (0.88%) Tableau
8 1 (0.88%) Tableau Server
Development Applications
1 35 (30.97%) Git (software)
2 17 (15.04%) Jenkins
3 8 (7.08%) GitLab
3 8 (7.08%) JIRA
4 7 (6.19%) Bitbucket
5 5 (4.42%) Atlassian Bamboo
6 4 (3.54%) Subversion
7 2 (1.77%) Eclipse
7 2 (1.77%) GoCD
7 2 (1.77%) Oracle APEX
8 1 (0.88%) Bitbucket Server
8 1 (0.88%) Emacs
8 1 (0.88%) Octopus Deploy
General
1 23 (20.35%) Social Skills
2 22 (19.47%) Telecoms
3 18 (15.93%) Finance
4 2 (1.77%) Marketing
4 2 (1.77%) Retail
5 1 (0.88%) Advertising
5 1 (0.88%) Analytical Skills
5 1 (0.88%) Documentation Skills
5 1 (0.88%) Fire and Rescue
5 1 (0.88%) Inclusion and Diversity
5 1 (0.88%) Law
5 1 (0.88%) Military
Job Titles
1 30 (26.55%) Administrator
1 30 (26.55%) Linux Administrator
2 26 (23.01%) Systems Administrator
3 25 (22.12%) Linux Systems Administrator
4 22 (19.47%) Software Engineer
5 20 (17.70%) DevOps Engineer
6 18 (15.93%) Architect
7 17 (15.04%) C Software Engineer
7 17 (15.04%) C/C++ Software Engineer
7 17 (15.04%) C++ Software Engineer
7 17 (15.04%) Data Architect
8 11 (9.73%) Junior
8 11 (9.73%) Junior Systems Administrator
9 10 (8.85%) AWS Engineer
9 10 (8.85%) Junior Linux Systems Administrator
9 10 (8.85%) Support Engineer
10 8 (7.08%) Cloud Engineer
11 6 (5.31%) AWS DevOps
11 6 (5.31%) AWS DevOps Engineer
11 6 (5.31%) Linux Engineer
Libraries, Frameworks & Software Standards
1 6 (5.31%) LAMP
2 5 (4.42%) LEMP Stack
3 4 (3.54%) HTML
3 4 (3.54%) LDAP
3 4 (3.54%) Node.js
3 4 (3.54%) REST
4 3 (2.65%) Elastic Stack
4 3 (2.65%) YAML
5 2 (1.77%) ARM Templates
5 2 (1.77%) CSS
5 2 (1.77%) jQuery
5 2 (1.77%) Kafka
5 2 (1.77%) RabbitMQ
5 2 (1.77%) SAML
6 1 (0.88%) HTML5
6 1 (0.88%) SOAP
6 1 (0.88%) Spring
6 1 (0.88%) Spring Batch
6 1 (0.88%) Web Services
6 1 (0.88%) XHTML
Miscellaneous
1 5 (4.42%) Fibre Optics
1 5 (4.42%) Legacy Code
1 5 (4.42%) Linux Command Line
2 4 (3.54%) Biotechnology
2 4 (3.54%) Cloud Native
2 4 (3.54%) Public Cloud
3 3 (2.65%) Video\Live Streaming
4 2 (1.77%) Clustering
4 2 (1.77%) Data Centre
4 2 (1.77%) Device Driver
4 2 (1.77%) Enterprise Software
4 2 (1.77%) EPoS
4 2 (1.77%) iPad
4 2 (1.77%) Legacy Applications
5 1 (0.88%) Analytical Mindset
5 1 (0.88%) Cybercrime
5 1 (0.88%) Distributed Denial-of-Service
5 1 (0.88%) Private Cloud
5 1 (0.88%) Replication
Operating Systems
1 113 (100.00%) Linux
2 65 (57.52%) Red Hat Enterprise Linux
3 48 (42.48%) Ubuntu
4 29 (25.66%) Debian
5 10 (8.85%) Windows
6 4 (3.54%) Amazon Linux
7 3 (2.65%) Windows Server
8 2 (1.77%) Alpine Linux
8 2 (1.77%) Windows Server 2012
9 1 (0.88%) Unix
9 1 (0.88%) VMS
9 1 (0.88%) Windows Server 2016
Processes & Methodologies
1 42 (37.17%) Software Engineering
2 41 (36.28%) Agile Software Development
3 34 (30.09%) DevOps
4 30 (26.55%) Migration
5 23 (20.35%) Scrum
6 22 (19.47%) Integration Testing
6 22 (19.47%) Multithreading
7 21 (18.58%) Configuration Management
8 20 (17.70%) Open Source
9 19 (16.81%) Cybersecurity
10 18 (15.93%) Coaching
11 17 (15.04%) Multithreaded Programming
11 17 (15.04%) Prototyping
11 17 (15.04%) Rapid Prototyping
11 17 (15.04%) Software Architecture
12 14 (12.39%) Continuous Integration
13 13 (11.50%) Problem-Solving
14 11 (9.73%) High Availability
15 8 (7.08%) Infrastructure as Code
15 8 (7.08%) Mentoring
Programming Languages
1 98 (86.73%) Python
2 50 (44.25%) Bash Shell
3 41 (36.28%) C++
4 32 (28.32%) PHP
5 31 (27.43%) Perl
6 25 (22.12%) Java
6 25 (22.12%) JavaScript
7 23 (20.35%) C
8 21 (18.58%) Shell Script
9 8 (7.08%) SQL
10 6 (5.31%) Go
11 4 (3.54%) PowerShell
11 4 (3.54%) R
12 2 (1.77%) C#
12 2 (1.77%) Groovy
12 2 (1.77%) Kotlin
12 2 (1.77%) Ruby
13 1 (0.88%) Java 8
Qualifications
1 21 (18.58%) SC Cleared
1 21 (18.58%) Security Cleared
2 10 (8.85%) AWS Certification
3 8 (7.08%) Degree
4 4 (3.54%) Computer Science Degree
5 2 (1.77%) A+ Certification
5 2 (1.77%) CCNA
5 2 (1.77%) Cisco Certification
5 2 (1.77%) CompTIA Security+
5 2 (1.77%) JNCIA
5 2 (1.77%) MCSA
5 2 (1.77%) Microsoft Certification
5 2 (1.77%) Network+ Certification
6 1 (0.88%) PhD
Quality Assurance & Compliance
1 3 (2.65%) SLA
2 2 (1.77%) PCI DSS
3 1 (0.88%) ISO/IEC 27001
System Software
1 21 (18.58%) Docker
2 8 (7.08%) Active Directory
3 5 (4.42%) VMware Infrastructure
4 2 (1.77%) Hyper-V
4 2 (1.77%) Oracle RAC
4 2 (1.77%) vSphere
5 1 (0.88%) Firmware
5 1 (0.88%) KVM
5 1 (0.88%) VMware ESXi
Systems Management
1 32 (28.32%) Ansible
2 19 (16.81%) Terraform
3 18 (15.93%) Kubernetes
4 7 (6.19%) Puppet
5 4 (3.54%) Packer
6 3 (2.65%) Opscode Chef
7 2 (1.77%) Active Directory Federation Services
7 2 (1.77%) Consul
7 2 (1.77%) Docker Swarm
7 2 (1.77%) Grafana
7 2 (1.77%) Graphite
7 2 (1.77%) Prometheus
7 2 (1.77%) Single Sign-On
7 2 (1.77%) ZABBIX
8 1 (0.88%) Galera Cluster
8 1 (0.88%) Icinga
8 1 (0.88%) Microsoft Clustering
8 1 (0.88%) Nagios
Vendors
1 17 (15.04%) Red Hat
2 6 (5.31%) VMware
3 5 (4.42%) Oracle
4 4 (3.54%) Apple
4 4 (3.54%) Cisco
5 3 (2.65%) Atlassian
6 2 (1.77%) Aruba
6 2 (1.77%) Fortinet
6 2 (1.77%) Google
6 2 (1.77%) Juniper
6 2 (1.77%) Mitel
6 2 (1.77%) Ruckus Wireless
6 2 (1.77%) SaltStack
7 1 (0.88%) Blue Coat
7 1 (0.88%) CheckPoint
7 1 (0.88%) Microsoft
7 1 (0.88%) Nokia
7 1 (0.88%) WooCommerce
7 1 (0.88%) Yealink
7 1 (0.88%) Zerto