Period
to 21 November 2019

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 21 November 2019 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > South East
6 months to
21 Nov 2019
Same period 2018 Same period 2017
Rank 350 331 258
Rank change year-on-year -19 -73 +24
Permanent jobs citing CentOS 147 219 368
As % of all permanent IT jobs advertised in the South East 0.59% 0.76% 1.19%
As % of the Operating Systems category 2.29% 3.01% 4.35%
Number of salaries quoted 137 199 331
South East median annual salary £50,000 £52,500 £45,000
Median salary % change year-on-year -4.76% +16.67% -10.00%
10th Percentile £30,600 £29,000 £27,000
90th Percentile £68,500 £74,000 £67,500
England median annual salary £50,000 £55,000 £50,000
% change year-on-year -9.09% +10.00% -

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 6,408 7,264 8,459
As % of all permanent IT jobs advertised in the South East 25.51% 25.26% 27.44%
Number of salaries quoted 5,319 5,983 7,294
South East median annual salary £42,500 £42,500 £40,000
Median salary % change year-on-year - +6.25% -5.88%
10th Percentile £24,250 £24,000 £22,500
90th Percentile £70,000 £67,500 £63,000
England median annual salary £45,000 £47,500 £45,000
% change year-on-year -5.26% +5.56% -

CentOS
Job Vacancy Trend in the South East

Job postings citing CentOS as a percentage 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

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing CentOS in the South East.

Salary trend for CentOS in the South East

CentOS
Salary Histogram in the South East

The salary distribution of IT jobs citing CentOS in the South East over the 6 months to 21 November 2019.

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 21 November 2019. 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 -14 50 £50,000 -9.09% 27
Hampshire +25 46 £47,500 +26.67% 3
Berkshire -4 38 £48,750 -11.36% 15
Surrey +2 25 £45,000 -39.19% 8
West Sussex +11 22 £62,500 +19.05%
Oxfordshire +4 9 £52,500 -19.23% 8
Buckinghamshire +8 3 £40,000 - 4
East Sussex +4 2 £70,000 +33.33%
Middlesex -9 1 £30,000 -41.18%
Kent -11 1 £37,000 +19.35%
CentOS
England

For the 6 months to 21 November 2019, 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.

1 142 (96.60%) Linux
2 67 (45.58%) Python
3 64 (43.54%) Red Hat
4 54 (36.73%) Ubuntu
5 50 (34.01%) Ansible
6 47 (31.97%) Bash Shell
7 43 (29.25%) AWS
7 43 (29.25%) VMware
8 42 (28.57%) MySQL
9 41 (27.89%) Degree
10 40 (27.21%) Git (software)
11 39 (26.53%) PostgreSQL
12 38 (25.85%) Red Hat Enterprise Linux
12 38 (25.85%) DevOps
13 35 (23.81%) Azure
13 35 (23.81%) Firewall
14 33 (22.45%) TCP/IP
14 33 (22.45%) DNS
14 33 (22.45%) Terraform
15 31 (21.09%) Finance
15 31 (21.09%) Debian
16 28 (19.05%) Perl
17 27 (18.37%) Unix
18 26 (17.69%) Windows
18 26 (17.69%) Jenkins
19 25 (17.01%) VPN
20 24 (16.33%) Cisco
20 24 (16.33%) JavaScript
21 23 (15.65%) Active Directory
22 22 (14.97%) Windows Server

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 18 (12.24%) Apache
2 9 (6.12%) Elasticsearch
3 6 (4.08%) IIS
3 6 (4.08%) MS Exchange
4 5 (3.40%) Confluence
4 5 (3.40%) Tomcat
5 4 (2.72%) nginx
6 3 (2.04%) SharePoint
7 1 (0.68%) OpenStack
7 1 (0.68%) Skype for Business
7 1 (0.68%) WebLogic
Applications
1 3 (2.04%) Microsoft Office
Business Applications
1 4 (2.72%) Cisco SocialMiner
2 1 (0.68%) Payment Gateway
2 1 (0.68%) Sage 200
Cloud Services
1 43 (29.25%) AWS
2 35 (23.81%) Azure
3 16 (10.88%) GCP
4 11 (7.48%) AWS CloudFormation
4 11 (7.48%) SaaS
5 9 (6.12%) IaaS
6 8 (5.44%) Office 365
7 4 (2.72%) Azure Active Directory
7 4 (2.72%) Azure Data Factory
7 4 (2.72%) Azure ExpressRoute
7 4 (2.72%) PaaS
8 2 (1.36%) Amazon CloudWatch
8 2 (1.36%) Amazon EC2
8 2 (1.36%) Amazon ELB
8 2 (1.36%) Amazon S3
8 2 (1.36%) Cloud Computing
8 2 (1.36%) Route 53
8 2 (1.36%) Virtual Private Cloud
Communications & Networking
1 35 (23.81%) Firewall
2 33 (22.45%) DNS
2 33 (22.45%) TCP/IP
3 25 (17.01%) VPN
4 20 (13.61%) DHCP
5 15 (10.20%) Cisco Nexus
5 15 (10.20%) Network Security
6 13 (8.84%) SAN
7 12 (8.16%) LAN
8 9 (6.12%) Fibre Channel
9 8 (5.44%) SSH
10 7 (4.76%) VLAN
10 7 (4.76%) WAN
11 6 (4.08%) BGP
11 6 (4.08%) SSL
12 5 (3.40%) HTTP
13 4 (2.72%) DSLAM
13 4 (2.72%) EIGRP
13 4 (2.72%) HTTPS
13 4 (2.72%) SMTP
Database & Business Intelligence
1 42 (28.57%) MySQL
2 39 (26.53%) PostgreSQL
3 16 (10.88%) SQL Server
4 9 (6.12%) MariaDB
4 9 (6.12%) NoSQL
5 6 (4.08%) InfluxDB
6 5 (3.40%) Amazon Athena
7 4 (2.72%) Azure SQL Database
7 4 (2.72%) Big Data
7 4 (2.72%) Hadoop
8 2 (1.36%) Amazon RDS
8 2 (1.36%) Oracle Database
8 2 (1.36%) SQL Server 2008
8 2 (1.36%) SQL Server 2012
8 2 (1.36%) SQL Server 2016
9 1 (0.68%) Hazelcast
Development Applications
1 40 (27.21%) Git (software)
2 26 (17.69%) Jenkins
3 8 (5.44%) Subversion
4 6 (4.08%) Atlassian Bamboo
4 6 (4.08%) JIRA
5 4 (2.72%) Robot Framework
5 4 (2.72%) Selenium
5 4 (2.72%) VSS/SourceSafe
6 1 (0.68%) Artifactory
6 1 (0.68%) Octopus Deploy
6 1 (0.68%) Sonatype Nexus
General
1 31 (21.09%) Finance
2 15 (10.20%) Marketing
3 12 (8.16%) Public Sector
4 11 (7.48%) Electronics
4 11 (7.48%) Manufacturing
4 11 (7.48%) Telecoms
5 4 (2.72%) Billing
5 4 (2.72%) Games
5 4 (2.72%) Retail
6 2 (1.36%) Aerospace
7 1 (0.68%) Automotive
7 1 (0.68%) Korean Language
Job Titles
1 25 (17.01%) DevOps Engineer
2 24 (16.33%) Administrator
3 22 (14.97%) Developer
4 19 (12.93%) Linux Engineer
4 19 (12.93%) Network Engineer
5 17 (11.56%) Applications Support
5 17 (11.56%) Systems Administrator
6 16 (10.88%) Support Engineer
7 13 (8.84%) Applications Engineer
7 13 (8.84%) Applications Support Engineer
8 12 (8.16%) Analyst
9 11 (7.48%) Unix Administrator
10 10 (6.80%) Linux Support
11 8 (5.44%) Lead Network Engineer
11 8 (5.44%) Linux Administrator
11 8 (5.44%) Linux Systems Administrator
11 8 (5.44%) Python Engineer
11 8 (5.44%) Support Analyst
12 7 (4.76%) Full Stack Developer
13 6 (4.08%) Linux Support Engineer
Libraries, Frameworks & Software Standards
1 20 (13.61%) AngularJS
2 19 (12.93%) Web Services
3 18 (12.24%) Django
4 17 (11.56%) HTML
5 13 (8.84%) LAMP
6 12 (8.16%) CSS
7 11 (7.48%) jQuery
8 8 (5.44%) Twitter Bootstrap
8 8 (5.44%) Vue.js
9 7 (4.76%) LDAP
10 5 (3.40%) Spring
11 4 (2.72%) HTML5
11 4 (2.72%) REST
11 4 (2.72%) Symfony
12 3 (2.04%) ActiveMQ
12 3 (2.04%) Apache NiFi
12 3 (2.04%) JSON
12 3 (2.04%) Kafka
12 3 (2.04%) RabbitMQ
12 3 (2.04%) Spring MVC
Miscellaneous
1 13 (8.84%) Data Centre
2 10 (6.80%) Linux Command Line
3 8 (5.44%) Clustering
3 8 (5.44%) PlayStation
4 7 (4.76%) User Experience
5 6 (4.08%) Public Cloud
6 5 (3.40%) Algorithms
7 4 (2.72%) IVR
7 4 (2.72%) Online Games
8 3 (2.04%) Enterprise Software
8 3 (2.04%) Management Information System
8 3 (2.04%) Self-Motivation
9 2 (1.36%) Analytical Skills
9 2 (1.36%) Mobile App
10 1 (0.68%) Client/Server
10 1 (0.68%) Driving Licence
10 1 (0.68%) Hybrid Cloud
10 1 (0.68%) Internet of Things
10 1 (0.68%) Mainframe
10 1 (0.68%) PKI
Operating Systems
1 142 (96.60%) Linux
2 54 (36.73%) Ubuntu
3 38 (25.85%) Red Hat Enterprise Linux
4 31 (21.09%) Debian
5 27 (18.37%) Unix
6 26 (17.69%) Windows
7 22 (14.97%) Windows Server
8 10 (6.80%) Solaris
9 9 (6.12%) Windows 10
10 6 (4.08%) Windows 7
10 6 (4.08%) Windows Server 2008
10 6 (4.08%) Windows Server 2012
11 5 (3.40%) AIX
12 4 (2.72%) Amazon Linux
13 2 (1.36%) SUSE
14 1 (0.68%) Android
14 1 (0.68%) Fedora
14 1 (0.68%) VMS
Processes & Methodologies
1 38 (25.85%) DevOps
2 20 (13.61%) Configuration Management
3 19 (12.93%) ITIL
3 19 (12.93%) Web Development
4 18 (12.24%) Change Management
4 18 (12.24%) Computer Science
5 15 (10.20%) Continuous Integration
6 13 (8.84%) TDD
7 12 (8.16%) Agile Software Development
7 12 (8.16%) Cybersecurity
7 12 (8.16%) Problem-Solving
8 11 (7.48%) Business Intelligence
8 11 (7.48%) Digital Marketing
8 11 (7.48%) Migration
8 11 (7.48%) OO
8 11 (7.48%) Programme Management
9 10 (6.80%) Information Security
9 10 (6.80%) Infrastructure as Code
9 10 (6.80%) MVC
9 10 (6.80%) Software Engineering
Programming Languages
1 67 (45.58%) Python
2 47 (31.97%) Bash Shell
3 28 (19.05%) Perl
4 24 (16.33%) JavaScript
5 19 (12.93%) C++
6 17 (11.56%) Java
6 17 (11.56%) SQL
7 13 (8.84%) Korn
7 13 (8.84%) Shell Script
8 11 (7.48%) PowerShell
9 9 (6.12%) AWK
9 9 (6.12%) Bourne shell
9 9 (6.12%) PHP
10 5 (3.40%) PHP 5
10 5 (3.40%) Ruby
11 4 (2.72%) C
12 3 (2.04%) Java 8
13 1 (0.68%) HQL
13 1 (0.68%) PHP 7
13 1 (0.68%) Scala
Qualifications
1 41 (27.89%) Degree
2 18 (12.24%) Cisco Certification
3 17 (11.56%) Security Cleared
4 11 (7.48%) CCNP
5 6 (4.08%) OCA
5 6 (4.08%) OCP
5 6 (4.08%) Oracle Certification
5 6 (4.08%) RHCE
5 6 (4.08%) RHCSA
5 6 (4.08%) SC Cleared
6 5 (3.40%) AWS Certification
7 4 (2.72%) DV Cleared
7 4 (2.72%) ITIL Foundation Certificate
7 4 (2.72%) Microsoft Certification
8 3 (2.04%) CCNA
9 1 (0.68%) CCDP
9 1 (0.68%) Computer Science Degree
9 1 (0.68%) MCSE
Quality Assurance & Compliance
1 13 (8.84%) PCI DSS
2 5 (3.40%) ISO/IEC 27001
3 4 (2.72%) SLA
4 3 (2.04%) GDPR
5 2 (1.36%) NIST
6 1 (0.68%) QA
System Software
1 23 (15.65%) Active Directory
2 21 (14.29%) VMware Infrastructure
3 18 (12.24%) Docker
4 11 (7.48%) Hyper-V
5 10 (6.80%) Veritas Cluster Server
6 8 (5.44%) VMware ESXi
7 6 (4.08%) GlusterFS
7 6 (4.08%) Virtual Machines
8 5 (3.40%) KVM
9 4 (2.72%) Firmware
9 4 (2.72%) iptables
9 4 (2.72%) vSphere
10 3 (2.04%) Squid
11 2 (1.36%) VMware Server
12 1 (0.68%) NFS
12 1 (0.68%) Terminal Services
12 1 (0.68%) VMware NSX
Systems Management
1 50 (34.01%) Ansible
2 33 (22.45%) Terraform
3 21 (14.29%) Puppet
4 13 (8.84%) Red Hat Satellite
5 12 (8.16%) HAProxy
6 11 (7.48%) Nagios
6 11 (7.48%) Opscode Chef
7 10 (6.80%) ZABBIX
8 9 (6.12%) Kubernetes
8 9 (6.12%) NetBackup
8 9 (6.12%) Oracle ZFS
8 9 (6.12%) Red Hat Spacewalk
9 7 (4.76%) WSUS
10 6 (4.08%) vCenter Server
10 6 (4.08%) Veritas Storage Foundation
11 4 (2.72%) Cisco UCCE
11 4 (2.72%) Cisco UCCX
11 4 (2.72%) Perfmon
11 4 (2.72%) SELinux
11 4 (2.72%) vMotion
Vendors
1 64 (43.54%) Red Hat
2 43 (29.25%) VMware
3 24 (16.33%) Cisco
4 21 (14.29%) Microsoft
5 19 (12.93%) Brocade
6 14 (9.52%) Palo Alto
7 13 (8.84%) Google
8 12 (8.16%) Oracle
9 11 (7.48%) HP
9 11 (7.48%) SAP
10 10 (6.80%) CheckPoint
10 10 (6.80%) Riverbed
11 9 (6.12%) Centrify
11 9 (6.12%) Sun
11 9 (6.12%) Veritas
12 7 (4.76%) EMC
12 7 (4.76%) Symantec
13 6 (4.08%) Dell
13 6 (4.08%) StorageTek
13 6 (4.08%) Zend