The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Xen skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Xen over the 3 months to 30 March 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Xen Project
England / London
3 months to
30 Mar 2017
Same period 2016 Same period 2015
Rank 390 395 393
Rank change year-on-year +5 -2  
Contract jobs citing Xen 10 39 27
As % of all contract IT jobs advertised in London 0.051% 0.17% 0.13%
As % of the System Software category 0.46% 1.73% 1.36%
Number of daily rates quoted 9 29 17
Median daily rate £500 £475 £550
Median daily rate % change year-on-year +5.26% -13.63%  
90% offered a daily rate of more than £430 £330 £320
10% offered a daily rate of more than £580 £600 £625
UK excluding London median daily rate £543 £390 £320
% change year-on-year +39.29% +21.87%  
Number of hourly rates quoted 0 1 1
Median hourly rate - £22.50 £16.00
Median hourly rate % change year-on-year - +40.62%  
UK excluding London median hourly rate - £32.50 -

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

Contract System Software Skills
London
Contract job vacancies with a requirement for system software skills 2176 2248 1988
As % of all contract IT job vacancies advertised in London 11.04% 9.96% 9.28%
Number of daily rates quoted 1517 1556 1304
Median daily rate £450 £440 £413
Median daily rate % change year-on-year +2.27% +6.66%  
90% offered a daily rate of more than £225 £250 £195
10% offered a daily rate of more than £600 £550 £550
UK excluding London median daily rate £350 £370 £350
% change year-on-year -5.40% +5.71%  
Number of hourly rates quoted 51 93 136
Median hourly rate £23.00 £15.00 £17.50
Median hourly rate % change year-on-year +53.33% -14.28%  
90% offered a hourly rate of more than £14.42 £11.50 £12.50
10% offered a hourly rate of more than £50.00 £29.30 £28.75
UK excluding London median hourly rate £16.00 £16.50 £15.85
% change year-on-year -3.03% +4.10%  

Xen
Job Vacancy Trend in London

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

Job vacancy trend for Xen in London

Xen
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Xen in London.

Contractor daily rate trend for Xen in London

Xen
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Xen in London over the 3 months to 30 March 2017.

Contractor daily rate histogram for Xen in London

Xen
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Xen in London.

Contractor hourly rate trend for Xen in London

Xen
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Xen within the London region over the 3 months to 30 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London +6 3 £450 +28.57%
Xen
England

For the 6 months to 30 March 2017, IT contractor jobs citing Xen also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for Xen.

1 38 (90.48%) Linux
2 27 (64.29%) Apache
2 27 (64.29%) VMware
2 27 (64.29%) DevOps
3 25 (59.52%) VMware Infrastructure
4 23 (54.76%) Tomcat
5 22 (52.38%) Ubuntu
6 20 (47.62%) Windows
6 20 (47.62%) Bash Shell
7 19 (45.24%) Python
8 18 (42.86%) Agile Software Development
9 17 (40.48%) nginx
10 16 (38.10%) Firewall
11 15 (35.71%) PostgreSQL
11 15 (35.71%) Cisco
11 15 (35.71%) Jenkins
12 14 (33.33%) Microsoft
12 14 (33.33%) Citrix
12 14 (33.33%) MySQL
12 14 (33.33%) Jetty
13 13 (30.95%) Continuous Integration
13 13 (30.95%) Java
13 13 (30.95%) Ansible
14 12 (28.57%) IIS
14 12 (28.57%) HTTP
14 12 (28.57%) VPN
14 12 (28.57%) Red Hat
14 12 (28.57%) Google
14 12 (28.57%) WebSphere
15 11 (26.19%) PowerShell

Xen
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 27 (64.29%) Apache
2 23 (54.76%) Tomcat
3 17 (40.48%) nginx
4 14 (33.33%) Jetty
5 12 (28.57%) IIS
5 12 (28.57%) WebSphere
6 10 (23.81%) WildFly
7 8 (19.05%) Mule ESB
7 8 (19.05%) Oracle HTTP Server
8 7 (16.67%) DataSynapse
8 7 (16.67%) Oracle Coherence
9 4 (9.52%) Mongrel
10 2 (4.76%) Cloud Foundry
10 2 (4.76%) OpenStack
11 1 (2.38%) CloudStack
11 1 (2.38%) SharePoint
11 1 (2.38%) Skype for Business
11 1 (2.38%) WebLogic
Applications
1 6 (14.29%) MS Excel
Cloud Services
1 9 (21.43%) Amazon AWS
2 7 (16.67%) G Suite
3 4 (9.52%) Amazon EC2
3 4 (9.52%) Google App Engine
3 4 (9.52%) Google Cloud Platform
4 1 (2.38%) IaaS
4 1 (2.38%) Microsoft Azure
4 1 (2.38%) PaaS
Communications & Networking
1 16 (38.10%) Firewall
2 12 (28.57%) HTTP
2 12 (28.57%) VPN
3 11 (26.19%) WAN
4 10 (23.81%) LAN
5 9 (21.43%) FCoE
5 9 (21.43%) Fibre Channel
5 9 (21.43%) iSCSI
5 9 (21.43%) Multicast
5 9 (21.43%) NAS
5 9 (21.43%) SAN
6 8 (19.05%) Reverse Proxy
7 6 (14.29%) DMZ
7 6 (14.29%) Internet
7 6 (14.29%) IPsec
7 6 (14.29%) TCP/IP
8 4 (9.52%) DHCP
8 4 (9.52%) DNS
8 4 (9.52%) FTP
8 4 (9.52%) SSL
Database & Business Intelligence
1 15 (35.71%) PostgreSQL
2 14 (33.33%) MySQL
3 9 (21.43%) SQL Server
4 8 (19.05%) NoSQL
5 7 (16.67%) Hadoop
5 7 (16.67%) HBase
6 3 (7.14%) Apache Cassandra
7 2 (4.76%) Big Data
8 1 (2.38%) MongoDB
8 1 (2.38%) Oracle Database
8 1 (2.38%) Redis
8 1 (2.38%) Relational Database
Development Applications
1 15 (35.71%) Jenkins
2 11 (26.19%) Git (software)
3 9 (21.43%) Gerrit
3 9 (21.43%) GitLab
3 9 (21.43%) Mercurial
4 4 (9.52%) Travis CI
General
1 7 (16.67%) Banking
2 2 (4.76%) Finance
3 1 (2.38%) Investment Banking
3 1 (2.38%) Law
3 1 (2.38%) Retail
3 1 (2.38%) Retail Banking
Job Titles
1 15 (35.71%) DevOps Engineer
2 11 (26.19%) Architect
3 9 (21.43%) Infrastructure Architect
4 8 (19.05%) Design Engineer
5 4 (9.52%) Citrix Engineer
6 3 (7.14%) Administrator
6 3 (7.14%) Digital Architect
6 3 (7.14%) SCCM Engineer
6 3 (7.14%) Systems Administrator
6 3 (7.14%) Windows Engineer
7 2 (4.76%) DevOps Architect
7 2 (4.76%) DevOps Specialist
7 2 (4.76%) Infrastructure Solutions Architect
7 2 (4.76%) Lead Architect
7 2 (4.76%) Solutions Architect
8 1 (2.38%) Cisco Architect
8 1 (2.38%) Cisco Network Architect
8 1 (2.38%) Linux Engineer
8 1 (2.38%) Senior Network Support
8 1 (2.38%) Senior Network Support Engineer
Libraries, Frameworks & Software Standards
1 10 (23.81%) LAMP
1 10 (23.81%) LAPP Stack
1 10 (23.81%) LEMP Stack
2 8 (19.05%) HTML
2 8 (19.05%) Middleware
2 8 (19.05%) RabbitMQ
3 7 (16.67%) Rendezvous
3 7 (16.67%) XML
3 7 (16.67%) XSLT
4 4 (9.52%) .NET
4 4 (9.52%) Servlets
5 3 (7.14%) Elastic Stack
5 3 (7.14%) J2EE
6 2 (4.76%) Node.js
6 2 (4.76%) Web Services
6 2 (4.76%) YAML
7 1 (2.38%) ASP.NET Web API
7 1 (2.38%) REST
Miscellaneous
1 7 (16.67%) Cloud Native
2 4 (9.52%) Online Banking
3 1 (2.38%) Analytical Skills
3 1 (2.38%) Computer Science
3 1 (2.38%) Data Centre
3 1 (2.38%) Fintech
3 1 (2.38%) Private Cloud
Operating Systems
1 38 (90.48%) Linux
2 22 (52.38%) Ubuntu
3 20 (47.62%) Windows
4 10 (23.81%) CentOS
5 9 (21.43%) Solaris
6 8 (19.05%) Android
6 8 (19.05%) Apple iOS
6 8 (19.05%) Mac OS X
6 8 (19.05%) Windows 10
6 8 (19.05%) Windows 7
7 4 (9.52%) Debian
8 3 (7.14%) Windows Server
9 1 (2.38%) Red Hat Enterprise Linux
9 1 (2.38%) Unix
Processes & Methodologies
1 27 (64.29%) DevOps
2 18 (42.86%) Agile Software Development
3 13 (30.95%) Continuous Integration
4 9 (21.43%) Benchmarking
4 9 (21.43%) Performance Tuning
5 8 (19.05%) Infrastructure Management
5 8 (19.05%) ITIL
5 8 (19.05%) Scrum
5 8 (19.05%) Virtual Infrastructure
6 7 (16.67%) Continuous Delivery
6 7 (16.67%) Load Balancing
6 7 (16.67%) Patch Management
6 7 (16.67%) Software Distribution
6 7 (16.67%) Translating Business Requirements
6 7 (16.67%) Use Case
7 6 (14.29%) Configuration Management
8 5 (11.90%) Open Source
8 5 (11.90%) Software Delivery
9 2 (4.76%) Microservices
9 2 (4.76%) SDLC
Programming Languages
1 20 (47.62%) Bash Shell
2 19 (45.24%) Python
3 13 (30.95%) Java
4 11 (26.19%) Perl
4 11 (26.19%) PowerShell
5 10 (23.81%) SQL
6 7 (16.67%) JavaScript
7 2 (4.76%) Shell Script
8 1 (2.38%) C
8 1 (2.38%) C#
8 1 (2.38%) Ruby
Qualifications
1 5 (11.90%) Security Cleared
2 4 (9.52%) SC Cleared
3 2 (4.76%) Degree
4 1 (2.38%) ACMT
4 1 (2.38%) BPSS Clearance
4 1 (2.38%) CCA
4 1 (2.38%) CCNA
4 1 (2.38%) CCNP
4 1 (2.38%) Cisco Certification
4 1 (2.38%) Citrix Certification
4 1 (2.38%) MCSE
4 1 (2.38%) MCTS
4 1 (2.38%) Microsoft Certification
Quality Assurance & Compliance
1 1 (2.38%) PCI DSS
System Software
1 25 (59.52%) VMware Infrastructure
2 11 (26.19%) Hyper-V
2 11 (26.19%) KVM
3 10 (23.81%) Active Directory
3 10 (23.81%) Virtual Machines
4 9 (21.43%) Docker
4 9 (21.43%) NFS
4 9 (21.43%) SRDF
4 9 (21.43%) XenApp
4 9 (21.43%) XenDesktop
5 8 (19.05%) BitLocker
6 7 (16.67%) Oracle RAC
7 2 (4.76%) Postfix
8 1 (2.38%) iptables
8 1 (2.38%) Microsoft Virtual Server
8 1 (2.38%) Squid
8 1 (2.38%) Virtual Servers
8 1 (2.38%) vSphere
8 1 (2.38%) XenServer
Systems Management
1 13 (30.95%) Ansible
2 11 (26.19%) Kibana
2 11 (26.19%) logstash
3 10 (23.81%) HAProxy
4 9 (21.43%) Puppet
5 8 (19.05%) SCCM
5 8 (19.05%) WSUS
5 8 (19.05%) ZABBIX
6 3 (7.14%) Nagios
6 3 (7.14%) Opscode Chef
7 2 (4.76%) OpenAM
8 1 (2.38%) Jamf Pro
8 1 (2.38%) OpenNebula
8 1 (2.38%) PowerCLI
Vendors
1 27 (64.29%) VMware
2 15 (35.71%) Cisco
3 14 (33.33%) Citrix
3 14 (33.33%) Microsoft
4 12 (28.57%) Google
4 12 (28.57%) Red Hat
5 11 (26.19%) Dell
6 10 (23.81%) Oracle
7 9 (21.43%) EMC
7 9 (21.43%) Intel
7 9 (21.43%) NetApp
8 8 (19.05%) Apple
8 8 (19.05%) HP
8 8 (19.05%) IBM
8 8 (19.05%) Symantec
9 7 (16.67%) ServiceNow
9 7 (16.67%) Sybase
9 7 (16.67%) TIBCO
10 4 (9.52%) AppDynamics
11 3 (7.14%) MuleSoft