The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Xen skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Xen over the 3 months to 25 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
25 Mar 2017
Same period 2016 Same period 2015
Xen Project
London / City of London
Rank 220 253 282
Rank change year-on-year +33 +29  
Permanent jobs citing Xen 3 21 38
As % of all permanent IT jobs advertised in the City of London 0.059% 0.30% 0.37%
As % of the System Software category 0.49% 2.69% 2.86%
Number of salaries quoted 3 21 38
Median salary £62,500 £60,000 £52,500
Median salary % change year-on-year +4.16% +14.28%  
90% offered a salary of more than £54,500 £50,000 £35,000
10% offered a salary of more than £72,500 £85,000 £62,500
UK excluding London median salary £57,500 £42,500 £40,000
% change year-on-year +35.29% +6.25%  

Xen is in the system software skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the City of London with a requirement for system software skills.

System Software Skills
City of London
Permanent job vacancies with a requirement for system software skills 609 781 1328
As % of all permanent IT job vacancies advertised in the City of London 12.00% 11.02% 12.99%
Number of salaries quoted 567 682 1136
Median salary £52,500 £52,500 £47,500
Median salary % change year-on-year - +10.52%  
90% offered a salary of more than £28,500 £30,000 £31,500
10% offered a salary of more than £75,000 £67,500 £72,650
UK excluding London median salary £38,000 £38,000 £37,500
% change year-on-year - +1.33%  

Xen
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing Xen as a proportion of all permanent or contract IT jobs with a match in the System Software category.

Job vacancy trend for Xen in the City of London

Xen
Salary Trend in the City of London

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

Salary trend for Xen in the City of London

Xen
Salary Histogram in the City of London

The salary distribution of IT jobs citing Xen in the City of London over the 3 months to 25 March 2017.

Salary histogram for Xen in the City of London

Xen
Top 30 Related IT Skills in the City of London

For the 6 months to 25 March 2017, IT jobs citing Xen also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for Xen.

1 12 (80.00%) Amazon AWS
1 12 (80.00%) Puppet
1 12 (80.00%) Jenkins
1 12 (80.00%) Opscode Chef
2 11 (73.33%) DevOps
2 11 (73.33%) Salt
3 10 (66.67%) Ansible
3 10 (66.67%) Terraform
3 10 (66.67%) VMware
3 10 (66.67%) Linux
3 10 (66.67%) Python
4 9 (60.00%) Windows
4 9 (60.00%) Microsoft
4 9 (60.00%) Configuration Management
4 9 (60.00%) Bash Shell
4 9 (60.00%) Git (software)
5 8 (53.33%) Continuous Integration
6 7 (46.67%) VMware Infrastructure
6 7 (46.67%) Agile Software Development
6 7 (46.67%) Build Automation
7 6 (40.00%) CloudStack
7 6 (40.00%) OpenStack
7 6 (40.00%) LAMP
7 6 (40.00%) Ruby
7 6 (40.00%) WebSphere
7 6 (40.00%) Red Hat Enterprise Linux
7 6 (40.00%) Oracle
8 5 (33.33%) WebSphere Application Server
8 5 (33.33%) WebLogic
8 5 (33.33%) Perl

Xen
Top Related IT Skills in the City of 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 6 (40.00%) CloudStack
1 6 (40.00%) OpenStack
1 6 (40.00%) WebSphere
2 5 (33.33%) JBoss
2 5 (33.33%) WebLogic
2 5 (33.33%) WebSphere Application Server
3 3 (20.00%) MS Exchange
4 1 (6.67%) Apache
4 1 (6.67%) Cloud Foundry
4 1 (6.67%) IIS
4 1 (6.67%) Jetty
4 1 (6.67%) Mongrel
4 1 (6.67%) nginx
4 1 (6.67%) Tomcat
Applications
1 1 (6.67%) MS Excel
Cloud Services
1 12 (80.00%) Amazon AWS
2 1 (6.67%) AWS CloudFormation
2 1 (6.67%) DigitalOcean
2 1 (6.67%) Heroku
2 1 (6.67%) IaaS
2 1 (6.67%) Microsoft Azure
2 1 (6.67%) PaaS
Communications & Networking
1 5 (33.33%) Firewall
Database & Business Intelligence
1 5 (33.33%) MySQL
2 4 (26.67%) Redis
3 1 (6.67%) MongoDB
Development Applications
1 12 (80.00%) Jenkins
2 9 (60.00%) Git (software)
3 5 (33.33%) Subversion
3 5 (33.33%) TeamCity
4 4 (26.67%) JIRA
5 2 (13.33%) Buildbot
5 2 (13.33%) Gradle
5 2 (13.33%) Grunt
5 2 (13.33%) gulp
5 2 (13.33%) Hudson
6 1 (6.67%) GoCD
6 1 (6.67%) Travis CI
Job Titles
1 9 (60.00%) DevOps Engineer
2 3 (20.00%) Infrastructure Specialist
2 3 (20.00%) Linux DevOps Engineer
2 3 (20.00%) Linux Engineer
2 3 (20.00%) Linux/Unix DevOps
3 2 (13.33%) Developer
3 2 (13.33%) Lead DevOps
3 2 (13.33%) Lead DevOps Engineer
3 2 (13.33%) Senior DevOps
3 2 (13.33%) Senior DevOps Engineer
3 2 (13.33%) Web Developer
4 1 (6.67%) Administrator
4 1 (6.67%) AWS DevOps
4 1 (6.67%) AWS Engineer
4 1 (6.67%) Linux Administrator
4 1 (6.67%) Linux Scripter
4 1 (6.67%) Linux Systems Administrator
4 1 (6.67%) Systems Administrator
Libraries, Frameworks & Software Standards
1 6 (40.00%) LAMP
2 5 (33.33%) .NET
3 4 (26.67%) ActiveMQ
3 4 (26.67%) Kafka
3 4 (26.67%) RabbitMQ
4 2 (13.33%) CSS
4 2 (13.33%) HTML
4 2 (13.33%) jQuery
4 2 (13.33%) OOCSS
4 2 (13.33%) React
4 2 (13.33%) Twitter Bootstrap
5 1 (6.67%) LEMP Stack
Miscellaneous
1 2 (13.33%) Algorithms
1 2 (13.33%) Fintech
1 2 (13.33%) Mobile App
Operating Systems
1 10 (66.67%) Linux
2 9 (60.00%) Windows
3 6 (40.00%) Red Hat Enterprise Linux
4 5 (33.33%) Ubuntu
4 5 (33.33%) Unix
5 4 (26.67%) Debian
6 3 (20.00%) Windows Server
7 2 (13.33%) Android
7 2 (13.33%) Apple iOS
8 1 (6.67%) CentOS
Processes & Methodologies
1 11 (73.33%) DevOps
2 9 (60.00%) Configuration Management
3 8 (53.33%) Continuous Integration
4 7 (46.67%) Agile Software Development
4 7 (46.67%) Build Automation
5 5 (33.33%) Auto-Scaling
5 5 (33.33%) Disaster Recovery
5 5 (33.33%) DSDM
5 5 (33.33%) ITIL
5 5 (33.33%) OWASP
5 5 (33.33%) Performance Tuning
5 5 (33.33%) RUP
5 5 (33.33%) Scrum
6 4 (26.67%) Cybersecurity
7 3 (20.00%) Server Virtualisation
8 2 (13.33%) BEM - Block Element Modifier
8 2 (13.33%) Machine Learning
8 2 (13.33%) SMACSS
8 2 (13.33%) Web Development
9 1 (6.67%) User Stories
Programming Languages
1 10 (66.67%) Python
2 9 (60.00%) Bash Shell
3 6 (40.00%) Ruby
4 5 (33.33%) Perl
4 5 (33.33%) Shell Script
4 5 (33.33%) SQL
5 1 (6.67%) Go
5 1 (6.67%) PowerShell
System Software
1 7 (46.67%) VMware Infrastructure
2 5 (33.33%) vSphere
2 5 (33.33%) XenServer
3 4 (26.67%) KVM
3 4 (26.67%) Virtual Machines
4 1 (6.67%) Docker
Systems Management
1 12 (80.00%) Opscode Chef
1 12 (80.00%) Puppet
2 11 (73.33%) Salt
3 10 (66.67%) Ansible
3 10 (66.67%) Terraform
4 5 (33.33%) Cobbler
4 5 (33.33%) Tivoli
5 1 (6.67%) Packer
Vendors
1 10 (66.67%) VMware
2 9 (60.00%) Microsoft
3 6 (40.00%) Oracle
4 5 (33.33%) EnterpriseDB
4 5 (33.33%) Red Hat
5 3 (20.00%) Cisco
5 3 (20.00%) Citrix
5 3 (20.00%) Rackspace