Period
to 19 September 2019

The following table provides summary statistics for permanent job vacancies advertised in London 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 19 September 2019 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > London
6 months to
19 Sep 2019
Same period 2018 Same period 2017
Rank 462 412 373
Rank change year-on-year -50 -39 +1
Permanent jobs citing CentOS 281 482 648
As % of all permanent IT jobs advertised in London 0.50% 0.70% 0.86%
As % of the Operating Systems category 2.32% 3.08% 3.39%
Number of salaries quoted 224 446 559
London median annual salary £60,000 £60,000 £62,500
Median salary % change year-on-year - -4.00% +13.64%
10th Percentile £37,500 £37,500 £37,125
90th Percentile £105,000 £86,250 £86,500
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 London with a requirement for operating system skills.

All Operating Systems
London
Permanent vacancies with a requirement for operating system skills 12,098 15,650 19,093
As % of all permanent IT jobs advertised in London 21.65% 22.75% 25.40%
Number of salaries quoted 9,966 12,887 14,782
London median annual salary £60,000 £57,500 £55,000
Median salary % change year-on-year +4.35% +4.55% -
10th Percentile £29,000 £30,000 £30,000
90th Percentile £92,500 £88,750 £83,750
England median annual salary £47,500 £47,500 £45,000
% change year-on-year - +5.56% -

CentOS
Job Vacancy Trend in London

Job postings citing CentOS as a percentage of all IT jobs advertised in London.

Job vacancy trend for CentOS in London

CentOS
Salary Trend in London

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

Salary trend for CentOS in London

CentOS
Salary Histogram in London

The salary distribution of IT jobs citing CentOS in London over the 6 months to 19 September 2019.

Salary histogram for CentOS in London

CentOS
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the London region over the 6 months to 19 September 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
Central London -48 40 £70,000 +16.67% 17
South London +15 21 £55,000 -4.35% 8
East London +34 10 £41,000 -21.90% 4
West London +3 10 £52,500 -6.67% 4
North London -3 1 £37,500 -25.00% 1
CentOS
England

For the 6 months to 19 September 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 London region with a requirement for CentOS.

1 281 (100.00%) Linux
2 148 (52.67%) Python
3 141 (50.18%) Red Hat
4 140 (49.82%) DevOps
5 132 (46.98%) AWS
6 125 (44.48%) Docker
7 119 (42.35%) Ubuntu
8 116 (41.28%) Puppet
9 92 (32.74%) Jenkins
10 89 (31.67%) Ansible
11 88 (31.32%) Bash Shell
12 74 (26.33%) MySQL
13 73 (25.98%) Opscode Chef
13 73 (25.98%) Kubernetes
14 71 (25.27%) Red Hat Enterprise Linux
14 71 (25.27%) Java
15 70 (24.91%) Apache
16 66 (23.49%) Agile Software Development
17 65 (23.13%) Windows
18 59 (21.00%) Ruby
18 59 (21.00%) Azure
19 56 (19.93%) Configuration Management
20 55 (19.57%) Git (software)
21 54 (19.22%) Terraform
22 48 (17.08%) TCP/IP
23 44 (15.66%) SQL
24 43 (15.30%) Continuous Integration
25 41 (14.59%) GCP
25 41 (14.59%) JIRA
25 41 (14.59%) Debian

CentOS
Co-occurring IT Skills in London 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 70 (24.91%) Apache
2 37 (13.17%) nginx
3 28 (9.96%) Tomcat
4 25 (8.90%) Elasticsearch
5 22 (7.83%) Confluence
6 17 (6.05%) IIS
6 17 (6.05%) MS Exchange
7 10 (3.56%) Apache Spark
8 8 (2.85%) Apache Pig
9 7 (2.49%) GeoServer
10 5 (1.78%) JBoss
10 5 (1.78%) OpenStack
10 5 (1.78%) SharePoint
11 4 (1.42%) WordPress
12 2 (0.71%) CMS
12 2 (0.71%) WebSphere
13 1 (0.36%) WebLogic
Applications
1 5 (1.78%) Microsoft Office
2 2 (0.71%) Photoshop
2 2 (0.71%) Sketch
3 1 (0.36%) Microsoft Excel
Business Applications
1 1 (0.36%) Rolfe and Nolan
1 1 (0.36%) Salesforce.com CRM
Cloud Services
1 132 (46.98%) AWS
2 59 (21.00%) Azure
3 41 (14.59%) GCP
4 28 (9.96%) Amazon EC2
4 28 (9.96%) SaaS
5 22 (7.83%) Amazon SQS
6 21 (7.47%) AWS Lambda
7 20 (7.12%) Amazon CloudWatch
7 20 (7.12%) AWS CloudFormation
8 18 (6.41%) Amazon ECS
8 18 (6.41%) GitHub
8 18 (6.41%) Serverless
9 15 (5.34%) Office 365
10 13 (4.63%) AWS Fargate
11 12 (4.27%) Cloud Computing
12 10 (3.56%) Amazon S3
13 9 (3.20%) Slack
14 7 (2.49%) Amazon ElastiCache
14 7 (2.49%) Route 53
15 6 (2.14%) Virtual Private Cloud
Communications & Networking
1 48 (17.08%) TCP/IP
2 40 (14.23%) Firewall
3 28 (9.96%) HTTP
4 23 (8.19%) SMTP
5 22 (7.83%) SNMP
6 19 (6.76%) LAN
6 19 (6.76%) Wireless
7 17 (6.05%) IGMP
7 17 (6.05%) Multicast
7 17 (6.05%) Structured Cabling
7 17 (6.05%) WAN
7 17 (6.05%) WLAN
8 16 (5.69%) BGP
8 16 (5.69%) DNS
8 16 (5.69%) OSPF
9 15 (5.34%) VPN
10 14 (4.98%) BGP-4
11 10 (3.56%) DVB
11 10 (3.56%) DWDM
11 10 (3.56%) MPLS
Database & Business Intelligence
1 74 (26.33%) MySQL
2 31 (11.03%) Redis
3 30 (10.68%) Amazon RDS
4 24 (8.54%) NoSQL
5 20 (7.12%) Big Data
6 19 (6.76%) PostgreSQL
7 17 (6.05%) SQL Server
8 16 (5.69%) MongoDB
9 11 (3.91%) Hadoop
10 9 (3.20%) Apache Cassandra
11 8 (2.85%) Amazon DynamoDB
12 7 (2.49%) Amazon Aurora
13 6 (2.14%) MariaDB
14 3 (1.07%) Oracle Database
14 3 (1.07%) Oracle Database 11g
14 3 (1.07%) Oracle Database 12c
14 3 (1.07%) SQLite
15 2 (0.71%) Blockchain
16 1 (0.36%) Relational Database
16 1 (0.36%) SAP HANA
Development Applications
1 92 (32.74%) Jenkins
2 55 (19.57%) Git (software)
3 41 (14.59%) JIRA
4 25 (8.90%) Bitbucket
5 24 (8.54%) Atlassian Bamboo
6 22 (7.83%) Subversion
7 19 (6.76%) TeamCity
8 17 (6.05%) Octopus Deploy
9 16 (5.69%) Maven
10 12 (4.27%) JUnit
11 11 (3.91%) Bitbucket Server
11 11 (3.91%) EasyMock
12 10 (3.56%) Team Foundation Server
13 9 (3.20%) GitLab
14 7 (2.49%) Fiddler
14 7 (2.49%) SoapUI
15 5 (1.78%) Appium
15 5 (1.78%) CruiseControl
16 4 (1.42%) Ant
16 4 (1.42%) SonarQube
General
1 22 (7.83%) Finance
2 18 (6.41%) Law
3 7 (2.49%) Telecoms
4 6 (2.14%) Banking
5 4 (1.42%) Back Office
5 4 (1.42%) Games
5 4 (1.42%) Investment Banking
6 3 (1.07%) Marketing
7 2 (0.71%) Publishing
8 1 (0.36%) Pharmaceutical
8 1 (0.36%) Retail
Job Titles
1 81 (28.83%) DevOps Engineer
2 66 (23.49%) Administrator
3 61 (21.71%) Systems Administrator
4 57 (20.28%) Linux Engineer
5 40 (14.23%) Developer
6 33 (11.74%) Systems Engineer
7 31 (11.03%) AWS DevOps
8 29 (10.32%) Linux Administrator
9 26 (9.25%) Linux Systems Administrator
10 24 (8.54%) AWS Engineer
10 24 (8.54%) Linux/Unix DevOps
11 21 (7.47%) AWS DevOps Engineer
11 21 (7.47%) Software Developer
12 19 (6.76%) Network Administrator
12 19 (6.76%) Python Engineer
13 16 (5.69%) DevOps Systems Engineer
13 16 (5.69%) Java Developer
14 14 (4.98%) Linux Support
15 13 (4.63%) Java Software Developer
15 13 (4.63%) Linux Systems Engineer
Libraries, Frameworks & Software Standards
1 36 (12.81%) LAMP
2 28 (9.96%) Node.js
3 26 (9.25%) Web Services
4 23 (8.19%) Elastic Stack
4 23 (8.19%) LDAP
5 20 (7.12%) Spring
6 18 (6.41%) 802.1X
6 18 (6.41%) REST
7 16 (5.69%) CSS
7 16 (5.69%) HTML
8 15 (5.34%) .NET
9 14 (4.98%) RabbitMQ
10 12 (4.27%) Java EE
11 11 (3.91%) EJB
11 11 (3.91%) JSF
11 11 (3.91%) RESTful
12 10 (3.56%) LEMP Stack
12 10 (3.56%) XML
13 9 (3.20%) HTML5
14 8 (2.85%) Sensu
Miscellaneous
1 26 (9.25%) Data Centre
2 19 (6.76%) Clustering
3 18 (6.41%) Replication
4 17 (6.05%) IPTV
4 17 (6.05%) MPEG
4 17 (6.05%) Video\Live Streaming
5 14 (4.98%) Public Cloud
6 12 (4.27%) Analytical Skills
7 11 (3.91%) Wiki
8 10 (3.56%) Linux Command Line
8 10 (3.56%) Self-Motivation
9 9 (3.20%) Mobile App
10 8 (2.85%) Virtual Team
11 7 (2.49%) Hedge funds
12 6 (2.14%) Management Information System
13 5 (1.78%) User Experience
14 3 (1.07%) CMDB
15 2 (0.71%) Distributed Denial-of-Service
15 2 (0.71%) Enterprise Storage
15 2 (0.71%) Greenfield Project
Operating Systems
1 281 (100.00%) Linux
2 119 (42.35%) Ubuntu
3 71 (25.27%) Red Hat Enterprise Linux
4 65 (23.13%) Windows
5 41 (14.59%) Debian
6 32 (11.39%) Unix
7 24 (8.54%) Windows Server
8 23 (8.19%) Fedora
9 18 (6.41%) Solaris
10 10 (3.56%) Apple iOS
11 9 (3.20%) Android
11 9 (3.20%) Windows Server 2012
12 8 (2.85%) SUSE
13 7 (2.49%) Windows 10
14 6 (2.14%) Mac OS
14 6 (2.14%) Windows Server 2008
15 3 (1.07%) AIX
15 3 (1.07%) Windows 7
16 2 (0.71%) FreeNAS
16 2 (0.71%) Mac OS X
Processes & Methodologies
1 140 (49.82%) DevOps
2 66 (23.49%) Agile Software Development
3 56 (19.93%) Configuration Management
4 43 (15.30%) Continuous Integration
5 39 (13.88%) ITIL
6 35 (12.46%) Fintech
6 35 (12.46%) Scrum
7 33 (11.74%) Open Source
8 31 (11.03%) Migration
9 29 (10.32%) High Availability
10 27 (9.61%) Infrastructure Engineering
11 26 (9.25%) Microservices
12 25 (8.90%) Infrastructure as Code
13 23 (8.19%) Release Management
14 21 (7.47%) OO
15 20 (7.12%) Project Planning
16 19 (6.76%) Server Management
17 17 (6.05%) Cybersecurity
17 17 (6.05%) Software Engineering
18 16 (5.69%) Machine Learning
Programming Languages
1 148 (52.67%) Python
2 88 (31.32%) Bash Shell
3 71 (25.27%) Java
4 59 (21.00%) Ruby
5 44 (15.66%) SQL
6 39 (13.88%) PHP
7 30 (10.68%) PowerShell
8 29 (10.32%) Go
9 28 (9.96%) Shell Script
10 21 (7.47%) Perl
11 18 (6.41%) C++
12 17 (6.05%) C
12 17 (6.05%) JavaScript
13 14 (4.98%) C#
14 12 (4.27%) Scala
15 9 (3.20%) Apple Swift
15 9 (3.20%) Clojure
16 8 (2.85%) Kotlin
17 7 (2.49%) T-SQL
18 2 (0.71%) TypeScript
Qualifications
1 20 (7.12%) Cisco Certification
2 17 (6.05%) Degree
3 14 (4.98%) CCNP
4 12 (4.27%) AWS Certification
5 10 (3.56%) CCDP
5 10 (3.56%) CCNA
6 9 (3.20%) Computer Science Degree
7 8 (2.85%) Security Cleared
8 7 (2.49%) RHCE
9 6 (2.14%) Oracle Certification
9 6 (2.14%) Sun Certification
10 4 (1.42%) ITIL Certification
10 4 (1.42%) Master's Degree
10 4 (1.42%) SC Cleared
11 3 (1.07%) DV Cleared
11 3 (1.07%) Linux+ Certification
11 3 (1.07%) MCSE
11 3 (1.07%) Microsoft Certification
11 3 (1.07%) VMware Certified Professional (VCP)
12 2 (0.71%) Network+ Certification
Quality Assurance & Compliance
1 17 (6.05%) QA
2 6 (2.14%) ISO/IEC 27001
3 4 (1.42%) PCI DSS
4 1 (0.36%) SLA
System Software
1 125 (44.48%) Docker
2 27 (9.61%) VMware Infrastructure
3 14 (4.98%) Active Directory
4 10 (3.56%) DRBD
4 10 (3.56%) GlusterFS
5 9 (3.20%) iptables
6 8 (2.85%) KVM
7 7 (2.49%) vSphere
8 6 (2.14%) Hyper-V
9 5 (1.78%) oVirt
10 4 (1.42%) OpenSSH
10 4 (1.42%) QEMU
11 3 (1.07%) Firmware
11 3 (1.07%) pfSense
11 3 (1.07%) Samba
11 3 (1.07%) Virtual Machines
11 3 (1.07%) VirtualBox
12 2 (0.71%) NFS
12 2 (0.71%) VMware NSX
12 2 (0.71%) Xen
Systems Management
1 116 (41.28%) Puppet
2 89 (31.67%) Ansible
3 73 (25.98%) Kubernetes
3 73 (25.98%) Opscode Chef
4 54 (19.22%) Terraform
5 35 (12.46%) Nagios
6 32 (11.39%) ZABBIX
7 20 (7.12%) Packer
8 18 (6.41%) Grafana
9 15 (5.34%) Docker Swarm
10 13 (4.63%) Kibana
10 13 (4.63%) logstash
11 12 (4.27%) Prometheus
12 10 (3.56%) Galera Cluster
13 9 (3.20%) Graphite
14 8 (2.85%) Rancher
15 7 (2.49%) Mesos
16 6 (2.14%) yum
17 4 (1.42%) StatsD
17 4 (1.42%) systemd
Vendors
1 141 (50.18%) Red Hat
2 37 (13.17%) VMware
3 34 (12.10%) Cisco
4 30 (10.68%) Oracle
5 29 (10.32%) Microsoft
6 22 (7.83%) Google
7 12 (4.27%) SaltStack
8 10 (3.56%) Atlassian
8 10 (3.56%) Extreme Networks
8 10 (3.56%) Percona
9 9 (3.20%) Dynatrace
10 7 (2.49%) SolarWinds
11 6 (2.14%) Splunk
12 5 (1.78%) Apple
12 5 (1.78%) Dell
13 4 (1.42%) Citrix
13 4 (1.42%) F5
13 4 (1.42%) HP
13 4 (1.42%) IBM
13 4 (1.42%) Zoho