Period
to 10 December 2018

The following table provides summary statistics for permanent job vacancies advertised in Central 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 10 December 2018 with a comparison to the same period in the previous 2 years.

CentOS Linux
London > Central London
6 months to
10 Dec 2018
Same period 2017 Same period 2016
Rank 292 282 321
Rank change year-on-year -10 +39 +18
Permanent jobs citing CentOS 93 107 63
As % of all permanent IT jobs advertised in Central London 0.68% 0.75% 0.46%
As % of the Operating Systems category 2.90% 3.20% 1.78%
Number of salaries quoted 88 96 56
Central London median annual salary £50,000 £65,000 £57,500
Median salary % change year-on-year -23.08% +13.04% +9.52%
10th Percentile £27,500 £40,125 £39,500
90th Percentile £93,750 £85,000 £69,375
London median annual salary £57,500 £60,000 £55,000
% change year-on-year -4.17% +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 Central London with a requirement for operating system skills.

All Operating Systems
Central London
Permanent vacancies with a requirement for operating system skills 3,205 3,348 3,531
As % of all permanent IT jobs advertised in Central London 23.59% 23.60% 25.61%
Number of salaries quoted 2,828 2,991 3,171
Central London median annual salary £57,500 £55,000 £55,000
Median salary % change year-on-year +4.55% - +4.76%
10th Percentile £28,250 £30,750 £29,750
90th Percentile £92,500 £86,250 £88,750
London median annual salary £60,000 £55,000 £55,000
% change year-on-year +9.09% - +4.76%

CentOS
Job Vacancy Trend in Central London

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

Job vacancy trend for CentOS in Central London

CentOS
Salary Trend in Central London

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

Salary trend for CentOS in Central London

CentOS
Salary Histogram in Central London

The salary distribution of IT jobs citing CentOS in Central London over the 6 months to 10 December 2018.

Salary histogram for CentOS in Central London

CentOS
Job Locations in Central London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the Central London region over the 6 months to 10 December 2018. 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
City of London -40 67 £50,000 -28.57% 15
City of Westminster +5 10 £61,250 +36.11%
Camden +10 5 £40,000 +2.56%
West End of London -7 4 £45,000 -10.00% 5
CentOS
London

For the 6 months to 10 December 2018, 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 Central London region with a requirement for CentOS.

1 93 (100.00%) Linux
2 64 (68.82%) Red Hat
3 43 (46.24%) Ansible
4 42 (45.16%) Configuration Management
5 40 (43.01%) DevOps
6 38 (40.86%) Amazon AWS
7 35 (37.63%) Opscode Chef
8 32 (34.41%) Windows
9 31 (33.33%) Puppet
10 30 (32.26%) Microsoft Azure
11 28 (30.11%) Bash Shell
12 27 (29.03%) Open Source
12 27 (29.03%) Python
13 26 (27.96%) Red Hat Enterprise Linux
14 23 (24.73%) SaaS
14 23 (24.73%) Cisco
14 23 (24.73%) Microsoft
15 22 (23.66%) Jenkins
16 21 (22.58%) Perl
17 20 (21.51%) Finance
17 20 (21.51%) Terraform
18 19 (20.43%) Kubernetes
18 19 (20.43%) Firewall
19 18 (19.35%) VMware
19 18 (19.35%) Git (software)
19 18 (19.35%) VMware Infrastructure
19 18 (19.35%) Ubuntu
19 18 (19.35%) Docker
20 17 (18.28%) Degree
21 16 (17.20%) HP

CentOS
Co-occurring IT Skills in Central 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 9 (9.68%) Apache
2 7 (7.53%) Elasticsearch
3 5 (5.38%) Tomcat
4 4 (4.30%) IIS
5 3 (3.23%) Apache Solr
6 2 (2.15%) CMS
6 2 (2.15%) Confluence
6 2 (2.15%) nginx
7 1 (1.08%) Apache Spark
7 1 (1.08%) OpenStack
Applications
1 1 (1.08%) HipChat
1 1 (1.08%) Spreadsheet
Cloud Services
1 38 (40.86%) Amazon AWS
2 30 (32.26%) Microsoft Azure
3 23 (24.73%) SaaS
4 7 (7.53%) Amazon EC2
5 5 (5.38%) Cloud Computing
6 4 (4.30%) Google Cloud Platform
7 2 (2.15%) Amazon S3
7 2 (2.15%) AWS CloudFormation
7 2 (2.15%) Azure Active Directory
7 2 (2.15%) GitHub
7 2 (2.15%) IBM Cloud
7 2 (2.15%) Office 365
7 2 (2.15%) SoftLayer
7 2 (2.15%) Virtual Private Cloud
8 1 (1.08%) AWS Lambda
8 1 (1.08%) CloudBees
8 1 (1.08%) Cloudflare
8 1 (1.08%) G Suite
8 1 (1.08%) NuGet
8 1 (1.08%) Serverless
Communications & Networking
1 19 (20.43%) Firewall
2 12 (12.90%) TCP/IP
2 12 (12.90%) WAN
3 9 (9.68%) LAN
4 8 (8.60%) DNS
5 7 (7.53%) Kerberos
5 7 (7.53%) VPN
6 5 (5.38%) Intrusion Detection
6 5 (5.38%) Network Security
6 5 (5.38%) SSH
6 5 (5.38%) SSL
7 4 (4.30%) Cisco ASA
7 4 (4.30%) VLAN
8 3 (3.23%) BGP
9 2 (2.15%) DHCP
9 2 (2.15%) DSL
9 2 (2.15%) FTP
9 2 (2.15%) IPsec
9 2 (2.15%) SAN
9 2 (2.15%) SMTP
Database & Business Intelligence
1 12 (12.90%) MySQL
2 7 (7.53%) SQL Server
3 5 (5.38%) Apache Cassandra
3 5 (5.38%) NoSQL
4 4 (4.30%) Apache Hive
4 4 (4.30%) HBase
4 4 (4.30%) MariaDB
4 4 (4.30%) Scylla
5 3 (3.23%) Relational Database
6 2 (2.15%) MongoDB
6 2 (2.15%) Redis
7 1 (1.08%) Big Data
7 1 (1.08%) Data Warehouse
7 1 (1.08%) InfluxDB
7 1 (1.08%) Oracle Database
7 1 (1.08%) RDBMS
Development Applications
1 22 (23.66%) Jenkins
2 18 (19.35%) Git (software)
3 12 (12.90%) Atlassian Bamboo
4 8 (8.60%) Subversion
5 7 (7.53%) Bitbucket
6 6 (6.45%) JIRA
6 6 (6.45%) Octopus Deploy
7 5 (5.38%) GitLab
7 5 (5.38%) Maven
7 5 (5.38%) Visual Studio Team System
8 3 (3.23%) TeamCity
9 1 (1.08%) CMake
9 1 (1.08%) FishEye
9 1 (1.08%) MSBuild
9 1 (1.08%) Vagrant
9 1 (1.08%) Visual Studio
General
1 20 (21.51%) Finance
2 10 (10.75%) Banking
3 7 (7.53%) Law
3 7 (7.53%) Legal
3 7 (7.53%) Telecoms
4 6 (6.45%) Financial Institution
5 5 (5.38%) Marketing
6 3 (3.23%) Advertising
7 2 (2.15%) Spanish Language
8 1 (1.08%) Back Office
8 1 (1.08%) Front Office
Job Titles
1 38 (40.86%) Systems Administrator
2 37 (39.78%) Administrator
3 27 (29.03%) DevOps Engineer
4 15 (16.13%) Junior
4 15 (16.13%) Linux Engineer
5 14 (15.05%) Junior Systems Administrator
6 12 (12.90%) Systems Engineer
7 11 (11.83%) Linux Administrator
7 11 (11.83%) Linux Systems Administrator
8 10 (10.75%) Linux Systems Engineer
9 8 (8.60%) AWS DevOps
9 8 (8.60%) Linux Scripter
10 7 (7.53%) AWS DevOps Engineer
10 7 (7.53%) AWS Engineer
10 7 (7.53%) Support Engineer
11 6 (6.45%) Developer
11 6 (6.45%) Linux/Unix DevOps
11 6 (6.45%) Senior DevOps
11 6 (6.45%) Senior DevOps Engineer
12 5 (5.38%) Cyber Intelligence Analyst
Libraries, Frameworks & Software Standards
1 13 (13.98%) Elastic Stack
2 7 (7.53%) LDAP
2 7 (7.53%) Web Services
3 6 (6.45%) Node.js
4 5 (5.38%) CSS
4 5 (5.38%) HTML
4 5 (5.38%) Kafka
4 5 (5.38%) LAMP
5 3 (3.23%) .NET
5 3 (3.23%) RESTful
6 2 (2.15%) Laravel
6 2 (2.15%) LEMP Stack
6 2 (2.15%) Software Packaging
7 1 (1.08%) React
Miscellaneous
1 11 (11.83%) Fintech
2 7 (7.53%) Management Information System
3 6 (6.45%) Self-Motivation
4 5 (5.38%) Cyber Kill Chain
5 4 (4.30%) Data Centre
5 4 (4.30%) Greenfield Project
5 4 (4.30%) Public Cloud
6 2 (2.15%) Analytical Skills
6 2 (2.15%) Clustering
6 2 (2.15%) Enterprise Software
6 2 (2.15%) Hedge funds
6 2 (2.15%) HP StoreVirtual
7 1 (1.08%) Enterprise Cloud
7 1 (1.08%) Internet of Things
7 1 (1.08%) Linux Command Line
7 1 (1.08%) Wiki
Operating Systems
1 93 (100.00%) Linux
2 32 (34.41%) Windows
3 26 (27.96%) Red Hat Enterprise Linux
4 18 (19.35%) Ubuntu
5 14 (15.05%) Unix
6 12 (12.90%) Windows Server
7 8 (8.60%) Windows Server 2008
7 8 (8.60%) Windows Server 2012
8 5 (5.38%) AIX
8 5 (5.38%) HPUX
8 5 (5.38%) Windows Server 2003
8 5 (5.38%) Windows XP
9 3 (3.23%) Debian
10 2 (2.15%) Fedora
10 2 (2.15%) Mac OS
10 2 (2.15%) Solaris
10 2 (2.15%) SUSE
11 1 (1.08%) Amazon Linux
11 1 (1.08%) Windows 10
11 1 (1.08%) Windows 7
Processes & Methodologies
1 42 (45.16%) Configuration Management
2 40 (43.01%) DevOps
3 27 (29.03%) Open Source
4 14 (15.05%) Algorithmic Trading
4 14 (15.05%) Continuous Integration
5 9 (9.68%) Agile Software Development
6 7 (7.53%) Change Control
6 7 (7.53%) Data Protection
6 7 (7.53%) Deployment Automation
6 7 (7.53%) Information Security
6 7 (7.53%) Infrastructure Engineering
7 6 (6.45%) Analytics
7 6 (6.45%) Microservices
8 5 (5.38%) Change Management
8 5 (5.38%) Digital Marketing
8 5 (5.38%) Forensic Analysis
8 5 (5.38%) Malware Analysis
8 5 (5.38%) Problem-Solving
8 5 (5.38%) Process Management
8 5 (5.38%) SIEM
Programming Languages
1 28 (30.11%) Bash Shell
2 27 (29.03%) Python
3 21 (22.58%) Perl
4 10 (10.75%) Ruby
4 10 (10.75%) SQL
5 9 (9.68%) PHP
6 6 (6.45%) Java
7 5 (5.38%) JavaScript
7 5 (5.38%) PowerShell
8 3 (3.23%) Shell Script
9 1 (1.08%) C
9 1 (1.08%) C++
9 1 (1.08%) Fortran
9 1 (1.08%) Go
9 1 (1.08%) Groovy
9 1 (1.08%) MATLAB
9 1 (1.08%) R
9 1 (1.08%) VBA
Qualifications
1 17 (18.28%) Degree
2 5 (5.38%) CISM
2 5 (5.38%) CISSP
3 3 (3.23%) RHCSA
4 2 (2.15%) AWS Certification
4 2 (2.15%) Computer Science Degree
4 2 (2.15%) Linux+ Certification
4 2 (2.15%) MCP
5 1 (1.08%) RHCE
5 1 (1.08%) Security Cleared
Quality Assurance & Compliance
1 4 (4.30%) QA
2 1 (1.08%) GDPR
System Software
1 18 (19.35%) Docker
1 18 (19.35%) VMware Infrastructure
2 7 (7.53%) Active Directory
3 4 (4.30%) HDFS
4 3 (3.23%) Apache ZooKeeper
4 3 (3.23%) VMware ESXi
5 2 (2.15%) GlusterFS
5 2 (2.15%) pfSense
5 2 (2.15%) Virtual Machines
5 2 (2.15%) VirtualBox
5 2 (2.15%) XenServer
6 1 (1.08%) Firmware
6 1 (1.08%) KVM
6 1 (1.08%) LXC
6 1 (1.08%) Samba
6 1 (1.08%) Snort
6 1 (1.08%) Xen
Systems Management
1 43 (46.24%) Ansible
2 35 (37.63%) Opscode Chef
3 31 (33.33%) Puppet
4 20 (21.51%) Terraform
5 19 (20.43%) Kubernetes
6 7 (7.53%) Kibana
6 7 (7.53%) Nagios
7 6 (6.45%) logstash
8 5 (5.38%) Prometheus
8 5 (5.38%) Salt
9 4 (4.30%) Docker Swarm
9 4 (4.30%) Icinga
9 4 (4.30%) Oozie
9 4 (4.30%) Packer
10 3 (3.23%) Consul
10 3 (3.23%) Grafana
10 3 (3.23%) LiteSpeed
10 3 (3.23%) vCenter Server
11 2 (2.15%) Backup Exec
11 2 (2.15%) ZABBIX
Vendors
1 64 (68.82%) Red Hat
2 23 (24.73%) Cisco
2 23 (24.73%) Microsoft
3 18 (19.35%) VMware
4 16 (17.20%) HP
5 7 (7.53%) SaltStack
6 6 (6.45%) Sun
7 5 (5.38%) Google
8 4 (4.30%) Hortonworks
8 4 (4.30%) Symantec
9 3 (3.23%) New Relic
9 3 (3.23%) Oracle
10 2 (2.15%) Atlassian
10 2 (2.15%) Brocade
10 2 (2.15%) Citrix
10 2 (2.15%) IBM
10 2 (2.15%) SolarWinds
10 2 (2.15%) Vyatta
11 1 (1.08%) Rackspace
11 1 (1.08%) Veeam