The table below looks at the prevalence of the term Inversion of Control in IT contracts advertised for the City of London region. Included is a guide to the average contractor rates offered in IT contracts that have cited Inversion of Control over the 3 months to 4 September 2015 with a comparison to the same period in the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

Location
3 months to
4 Sep 2015
Same period 2014 Same period 2013
Inversion of Control (IoC)
Rank 191 199 215
Rank change year-on-year
+8 +16
Contract jobs citing Inversion of Control 5 5 11
As % of all contract IT jobs located in the City of London 0.095% 0.086% 0.15%
As % of the Miscellaneous category 0.25% 0.24% 0.40%
Number of daily rates quoted 5 4 11
Average daily rate
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of your Daily Rate
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£350 £458 £351
Average daily rate % change year-on-year
-23.49% +30.52%
90% offered a daily rate of more than £343 £366 £350
10% offered a daily rate of more than £420 £593 £575
UK excluding London average daily rate £300 £350 £350
% change year-on-year
-14.28% -
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average hourly rate - - -
Inversion of Control
London

The following table is for comparison with the above and provides statistics for the entire Miscellaneous category in contract jobs advertised in the City of London region.

Miscellaneous Category
City of London
Contract IT job ads with a match in the
Miscellaneous category
1992 2095 2772
As % of all contract IT jobs located in the City of London 37.87% 36.07% 38.80%
Number of daily rates quoted 1585 1483 2029
Average daily rate £475 £475 £485
Average daily rate % change year-on-year
- -2.06%
90% offered a daily rate of more than £294 £300 £300
10% offered a daily rate of more than £650 £650 £625
UK excluding London average daily rate £375 £350 £350
% change year-on-year
+7.14% -
Number of hourly rates quoted 35 46 62
Average hourly rate £17.99 £18.75 £20.00
Average hourly rate % change year-on-year
-4.05% -6.25%
90% offered a hourly rate of more than £12.67 £12.50 £14.50
10% offered a hourly rate of more than £24.23 £36.50 £48.00
UK excluding London average hourly rate £21.50 £20.00 £17.50
% change year-on-year
+7.50% +14.28%

Inversion of Control
Jobs Demand Trend in the City of London

This chart provides a 3-month moving total of IT contractor jobs citing Inversion of Control across the City of London region as a proportion of the total demand within the Miscellaneous category.

Inversion of Control Jobs Demand Trend in the City of London

Inversion of Control
Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing Inversion of Control across the City of London region.

Inversion of Control Daily Rate Trend in the City of London

Inversion of Control
Daily Rate Histogram in the City of London

This chart provides a histogram of daily rates quoted in contract IT jobs citing Inversion of Control across the City of London region over the 3 months to 4 September 2015.

Inversion of Control Daily Rate Histogram in the City of London

Inversion of Control
Top 30 Related IT Skills in the City of London

For the 6 months to 4 September 2015, IT contractor jobs across the City of London region citing Inversion of Control also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited Inversion of Control.

1 9 (75.00%) .NET
1 9 (75.00%) SQL Server
1 9 (75.00%) TDD
2 7 (58.33%) C#
3 6 (50.00%) OO
3 6 (50.00%) NUnit
3 6 (50.00%) .NET Framework
4 5 (41.67%) Mentoring
4 5 (41.67%) Scrum
4 5 (41.67%) MVC
4 5 (41.67%) JavaScript
4 5 (41.67%) SQL
4 5 (41.67%) Visual Studio
4 5 (41.67%) SOA
5 4 (33.33%) T-SQL
5 4 (33.33%) HTML
5 4 (33.33%) ASP.NET
5 4 (33.33%) CSS
5 4 (33.33%) Agile Software Development
5 4 (33.33%) Unity DI Container
5 4 (33.33%) ASP.NET Web API
5 4 (33.33%) Entity Framework
5 4 (33.33%) SpecFlow
5 4 (33.33%) AngularJS
5 4 (33.33%) WCF
5 4 (33.33%) WPF
5 4 (33.33%) TeamCity
5 4 (33.33%) Git (software)
5 4 (33.33%) ASP.NET MVC
5 4 (33.33%) Dependency Injection

Inversion of Control
Top Related IT Skills in the City of London by Category

For the 6 months to 4 September 2015, IT contractor jobs across the City of London region citing Inversion of Control also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited Inversion of Control. Up to 20 skills are shown per category.

Application Platforms
1 2 (16.67%) IIS
1 2 (16.67%) SharePoint
1 2 (16.67%) NServiceBus
2 1 (8.33%) Elasticsearch
2 1 (8.33%) Apache Spark
2 1 (8.33%) BizTalk Server
2 1 (8.33%) Apache
2 1 (8.33%) Tomcat
Applications
1 1 (8.33%) MS Excel
1 1 (8.33%) MS Visio
Business Applications
1 1 (8.33%) Dynamics CRM
Communications & Networking
1 1 (8.33%) SMTP
1 1 (8.33%) Firewall
Database & Business Intelligence
1 9 (75.00%) SQL Server
2 3 (25.00%) MongoDB
2 3 (25.00%) SQL Server 2012
3 2 (16.67%) NoSQL
3 2 (16.67%) SQL Server Reporting Services
3 2 (16.67%) SQL Server Integration Services
3 2 (16.67%) SQL Server 2008
4 1 (8.33%) Hadoop
4 1 (8.33%) Mahout
4 1 (8.33%) MarkLogic
4 1 (8.33%) Triplestore
Development Applications
1 6 (50.00%) NUnit
2 5 (41.67%) Visual Studio
3 4 (33.33%) TeamCity
3 4 (33.33%) Git (software)
3 4 (33.33%) SpecFlow
4 3 (25.00%) Moq
4 3 (25.00%) Team Foundation Server
4 3 (25.00%) MSBuild
5 2 (16.67%) MSTest
5 2 (16.67%) ProC
5 2 (16.67%) Log4Net
5 2 (16.67%) ReSharper
5 2 (16.67%) Jasmine
5 2 (16.67%) Karma Test Runner
6 1 (8.33%) SQL Server Management Studio (SSMS)
6 1 (8.33%) NCrunch
6 1 (8.33%) Octopus Deploy
6 1 (8.33%) Fiddler
6 1 (8.33%) Mockito
6 1 (8.33%) SoapUI
General
1 1 (8.33%) Advertising
1 1 (8.33%) Banking
Job Titles
1 8 (66.67%) Developer
2 3 (25.00%) Senior Developer
3 2 (16.67%) Senior Software Engineer
3 2 (16.67%) Technical Leader
3 2 (16.67%) Java Developer
3 2 (16.67%) .NET Developer
3 2 (16.67%) Software Engineer
4 1 (8.33%) C# Developer
4 1 (8.33%) Lead Java Developer
4 1 (8.33%) Java Web Developer
4 1 (8.33%) Lead Web Developer
4 1 (8.33%) CRM Developer
4 1 (8.33%) Semantic Web Developer
4 1 (8.33%) Lead Developer
4 1 (8.33%) Web Developer
Libraries, Frameworks & Software Standards
1 9 (75.00%) .NET
2 6 (50.00%) .NET Framework
3 4 (33.33%) WCF
3 4 (33.33%) WPF
3 4 (33.33%) ASP.NET
3 4 (33.33%) CSS
3 4 (33.33%) HTML
3 4 (33.33%) ASP.NET MVC
3 4 (33.33%) Entity Framework
3 4 (33.33%) AngularJS
3 4 (33.33%) Unity DI Container
3 4 (33.33%) ASP.NET Web API
4 3 (25.00%) jQuery
5 2 (16.67%) RESTful
5 2 (16.67%) RabbitMQ
5 2 (16.67%) Twitter Bootstrap
5 2 (16.67%) Task Parallel Library
5 2 (16.67%) Castle Windsor
5 2 (16.67%) Ninject
5 2 (16.67%) Spring
Miscellaneous
1 1 (8.33%) N-Tier
1 1 (8.33%) Derivative
1 1 (8.33%) Equity Derivative
1 1 (8.33%) Semantic Web
1 1 (8.33%) Mobile App
1 1 (8.33%) Analytical Skills
Processes & Methodologies
1 9 (75.00%) TDD
2 6 (50.00%) OO
3 5 (41.67%) SOA
3 5 (41.67%) MVC
3 5 (41.67%) Scrum
3 5 (41.67%) Mentoring
4 4 (33.33%) Agile Software Development
4 4 (33.33%) Continuous Integration
4 4 (33.33%) Dependency Injection
4 4 (33.33%) BDD
5 3 (25.00%) Pair Programming
5 3 (25.00%) Refactoring
6 2 (16.67%) Release Management
6 2 (16.67%) Unit Testing
6 2 (16.67%) Software Engineering
6 2 (16.67%) OOP
6 2 (16.67%) Memory Management
6 2 (16.67%) DevOps
7 1 (8.33%) Line Management
7 1 (8.33%) Microservices
Programming Languages
1 7 (58.33%) C#
2 5 (41.67%) JavaScript
2 5 (41.67%) SQL
3 4 (33.33%) T-SQL
4 3 (25.00%) Java
5 2 (16.67%) PowerShell
6 1 (8.33%) SPARQL
6 1 (8.33%) XAML
Qualifications
1 1 (8.33%) Degree
Vendors
1 3 (25.00%) Microsoft
2 2 (16.67%) Infragistics
2 2 (16.67%) Twitter
3 1 (8.33%) Google