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 26 June 2017 with a comparison to the same period in the previous 2 years.

Xen Project
London / City of London
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank 225 251 305
Rank change year-on-year +26 +54  
Permanent jobs citing Xen 9 9 7
As % of all permanent IT jobs advertised in the City of London 0.17% 0.14% 0.068%
As % of the System Software category 1.21% 1.12% 0.72%
Number of salaries quoted 8 9 6
Median salary £67,500 £67,500 £53,750
Median salary % change year-on-year - +25.58%  
90% offered a salary of more than £33,200 £50,000 £41,250
10% offered a salary of more than £75,000 £70,000 £57,500
UK excluding London median salary £57,500 £42,500 £42,500
% change year-on-year +35.29% -  

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 742 807 971
As % of all permanent IT job vacancies advertised in the City of London 14.17% 12.84% 9.40%
Number of salaries quoted 664 746 858
Median salary £50,000 £53,000 £50,000
Median salary % change year-on-year -5.66% +6.00%  
90% offered a salary of more than £29,000 £31,500 £31,000
10% offered a salary of more than £75,000 £65,000 £72,500
UK excluding London median salary £38,000 £39,000 £37,500
% change year-on-year -2.56% +4.00%  

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 26 June 2017.

Salary histogram for Xen in the City of London

For the 6 months to 26 June 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 9 (75.00%) Linux
2 8 (66.67%) Windows
3 7 (58.33%) VMware
3 7 (58.33%) Puppet
4 6 (50.00%) Opscode Chef
4 6 (50.00%) Amazon AWS
4 6 (50.00%) Python
4 6 (50.00%) Ansible
4 6 (50.00%) DevOps
5 5 (41.67%) MySQL
5 5 (41.67%) Microsoft
5 5 (41.67%) Jenkins
5 5 (41.67%) Bash Shell
6 4 (33.33%) OpenStack
6 4 (33.33%) XenServer
6 4 (33.33%) Ruby
6 4 (33.33%) Continuous Integration
6 4 (33.33%) VMware Infrastructure
6 4 (33.33%) Red Hat Enterprise Linux
6 4 (33.33%) Configuration Management
6 4 (33.33%) Agile Software Development
6 4 (33.33%) Firewall
6 4 (33.33%) LAMP
6 4 (33.33%) Oracle
6 4 (33.33%) Perl
6 4 (33.33%) Salt
6 4 (33.33%) Terraform
7 3 (25.00%) Windows Server
7 3 (25.00%) Docker
7 3 (25.00%) PHP

Xen
Co-occurring 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 4 (33.33%) OpenStack
2 3 (25.00%) CloudStack
2 3 (25.00%) WebSphere
3 2 (16.67%) Apache
3 2 (16.67%) IIS
3 2 (16.67%) JBoss
3 2 (16.67%) WebLogic
3 2 (16.67%) WebSphere Application Server
4 1 (8.33%) Cloud Foundry
4 1 (8.33%) Jetty
4 1 (8.33%) Mongrel
4 1 (8.33%) MS Exchange
4 1 (8.33%) nginx
4 1 (8.33%) Tomcat
Cloud Services
1 6 (50.00%) Amazon AWS
2 2 (16.67%) DigitalOcean
2 2 (16.67%) IaaS
3 1 (8.33%) AWS CloudFormation
3 1 (8.33%) Google Cloud Platform
3 1 (8.33%) Heroku
3 1 (8.33%) Loggly
3 1 (8.33%) Microsoft Azure
3 1 (8.33%) PaaS
3 1 (8.33%) Sumo Logic
Communications & Networking
1 4 (33.33%) Firewall
2 3 (25.00%) DNS
3 2 (16.67%) LAN
3 2 (16.67%) WAN
4 1 (8.33%) BGP
4 1 (8.33%) DHCP
4 1 (8.33%) HTTP
4 1 (8.33%) MPLS
4 1 (8.33%) MRTG
4 1 (8.33%) OSPF
4 1 (8.33%) VoIP
4 1 (8.33%) VPLS
4 1 (8.33%) VPN
Database & Business Intelligence
1 5 (41.67%) MySQL
2 2 (16.67%) MongoDB
2 2 (16.67%) Redis
3 1 (8.33%) Apache Cassandra
3 1 (8.33%) PostgreSQL
3 1 (8.33%) SQL Server
Development Applications
1 5 (41.67%) Jenkins
2 3 (25.00%) Git (software)
2 3 (25.00%) TeamCity
3 2 (16.67%) Subversion
3 2 (16.67%) Travis CI
4 1 (8.33%) GoCD
4 1 (8.33%) JIRA
4 1 (8.33%) Vagrant
General
1 2 (16.67%) Banking
1 2 (16.67%) Finance
2 1 (8.33%) Telecoms
Job Titles
1 6 (50.00%) DevOps Engineer
2 2 (16.67%) Applications Engineer
2 2 (16.67%) Applications Packager
2 2 (16.67%) SCCM Engineer
3 1 (8.33%) 2nd Line Support
3 1 (8.33%) Administrator
3 1 (8.33%) Infrastructure Specialist
3 1 (8.33%) Lead DevOps
3 1 (8.33%) Lead DevOps Engineer
3 1 (8.33%) Operations Engineer
3 1 (8.33%) Senior DevOps
3 1 (8.33%) Senior DevOps Engineer
3 1 (8.33%) Systems Administrator
3 1 (8.33%) Systems Engineer
Libraries, Frameworks & Software Standards
1 4 (33.33%) LAMP
2 3 (25.00%) .NET
3 1 (8.33%) ActiveMQ
3 1 (8.33%) ASP.NET
3 1 (8.33%) Elastic Stack
3 1 (8.33%) FFmpeg
3 1 (8.33%) Kafka
3 1 (8.33%) LEMP Stack
3 1 (8.33%) Node.js
3 1 (8.33%) RabbitMQ
3 1 (8.33%) Web Services
Miscellaneous
1 1 (8.33%) Data Centre
1 1 (8.33%) Linux Command Line
1 1 (8.33%) Public Cloud
1 1 (8.33%) Replication
1 1 (8.33%) Streaming Media
1 1 (8.33%) User Experience
Operating Systems
1 9 (75.00%) Linux
2 8 (66.67%) Windows
3 4 (33.33%) Red Hat Enterprise Linux
4 3 (25.00%) CentOS
4 3 (25.00%) Unix
4 3 (25.00%) Windows Server
5 2 (16.67%) Ubuntu
5 2 (16.67%) Windows 10
5 2 (16.67%) Windows 7
5 2 (16.67%) Windows Server 2008
5 2 (16.67%) Windows Server 2012
6 1 (8.33%) CoreOS
6 1 (8.33%) Debian
6 1 (8.33%) FreeBSD
6 1 (8.33%) Windows Server 2003
Processes & Methodologies
1 6 (50.00%) DevOps
2 4 (33.33%) Agile Software Development
2 4 (33.33%) Configuration Management
2 4 (33.33%) Continuous Integration
3 2 (16.67%) Analytics
3 2 (16.67%) Application Packaging
3 2 (16.67%) Auto-Scaling
3 2 (16.67%) Build Automation
3 2 (16.67%) Disaster Recovery
3 2 (16.67%) DSDM
3 2 (16.67%) ITIL
3 2 (16.67%) OWASP
3 2 (16.67%) Performance Tuning
3 2 (16.67%) RUP
3 2 (16.67%) Scrum
3 2 (16.67%) Software Engineering
4 1 (8.33%) Cybersecurity
4 1 (8.33%) Data Centre Operations
4 1 (8.33%) Server Virtualisation
4 1 (8.33%) User Stories
Programming Languages
1 6 (50.00%) Python
2 5 (41.67%) Bash Shell
3 4 (33.33%) Perl
3 4 (33.33%) Ruby
4 3 (25.00%) PHP
4 3 (25.00%) PowerShell
5 2 (16.67%) Go
5 2 (16.67%) Shell Script
5 2 (16.67%) SQL
5 2 (16.67%) VB
5 2 (16.67%) VBScript
6 1 (8.33%) C
6 1 (8.33%) C#
6 1 (8.33%) C++
6 1 (8.33%) Java
6 1 (8.33%) Scala
Qualifications
1 2 (16.67%) CCNA
1 2 (16.67%) Cisco Certification
2 1 (8.33%) CCNP
2 1 (8.33%) JNCIS
System Software
1 4 (33.33%) VMware Infrastructure
1 4 (33.33%) XenServer
2 3 (25.00%) Docker
2 3 (25.00%) KVM
2 3 (25.00%) vSphere
3 2 (16.67%) Microsoft App-V
3 2 (16.67%) XenApp
3 2 (16.67%) XenDesktop
4 1 (8.33%) Active Directory
4 1 (8.33%) oVirt
4 1 (8.33%) Postfix
4 1 (8.33%) PowerDNS
4 1 (8.33%) Virtual Machines
4 1 (8.33%) VirtualBox
4 1 (8.33%) VMware ESXi
Systems Management
1 7 (58.33%) Puppet
2 6 (50.00%) Ansible
2 6 (50.00%) Opscode Chef
3 4 (33.33%) Salt
3 4 (33.33%) Terraform
4 3 (25.00%) Nagios
5 2 (16.67%) Cobbler
5 2 (16.67%) SCCM
5 2 (16.67%) Tivoli
5 2 (16.67%) ZABBIX
6 1 (8.33%) Cacti
6 1 (8.33%) Kubernetes
6 1 (8.33%) Munin
6 1 (8.33%) Packer
6 1 (8.33%) Rancher
Vendors
1 7 (58.33%) VMware
2 5 (41.67%) Microsoft
3 4 (33.33%) Oracle
4 3 (25.00%) Citrix
4 3 (25.00%) Red Hat
5 2 (16.67%) Cisco
5 2 (16.67%) EnterpriseDB
5 2 (16.67%) Rackspace
6 1 (8.33%) Brocade
6 1 (8.33%) Dynatrace
6 1 (8.33%) Google
6 1 (8.33%) Juniper
6 1 (8.33%) New Relic
6 1 (8.33%) SaltStack
6 1 (8.33%) Splunk