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 27 February 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
27 Feb 2015
Same period 2014 Same period 2013
Inversion of Control (IoC)
Rank 179 191 184
Rank change year-on-year
+12 -7
Contract jobs citing Inversion of Control 5 9 10
As % of all contract IT jobs located in the City of London 0.097% 0.16% 0.17%
As % of the Miscellaneous category 0.26% 0.41% 0.46%
Number of daily rates quoted 5 5 10
Average daily rate
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of your Daily Rate
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£435 £425 £500
Average daily rate % change year-on-year
+2.30% -15.00%
90% offered a daily rate of more than £400 £416 £468
10% offered a daily rate of more than £506 £620 £503
UK excluding London average daily rate £400 £375 £300
% change year-on-year
+6.66% +25.00%
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
1947 2221 2157
As % of all contract IT jobs located in the City of London 37.91% 38.29% 37.72%
Number of daily rates quoted 1507 1599 1662
Average daily rate £465 £500 £475
Average daily rate % change year-on-year
-7.10% +5.26%
90% offered a daily rate of more than £300 £275 £300
10% offered a daily rate of more than £625 £650 £625
UK excluding London average daily rate £375 £350 £335
% change year-on-year
+7.14% +4.47%
Number of hourly rates quoted 29 43 49
Average hourly rate £17.87 £22.50 £21.13
Average hourly rate % change year-on-year
-20.60% +6.50%
90% offered a hourly rate of more than £13.25 £16.00 £13.80
10% offered a hourly rate of more than £23.50 £42.50 £135.00
UK excluding London average hourly rate £18.50 £18.50 £20.00
% change year-on-year
- -7.50%

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
Top 30 Related IT Skills in the City of London

For the 6 months to 27 February 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 15 (83.33%) TDD
2 11 (61.11%) MVC
2 11 (61.11%) .NET
2 11 (61.11%) .NET Framework
2 11 (61.11%) WCF
3 10 (55.56%) C#
3 10 (55.56%) SQL Server
4 9 (50.00%) SQL
4 9 (50.00%) Unity DI Container
5 8 (44.44%) Web Services
5 8 (44.44%) WPF
6 7 (38.89%) ASP.NET MVC
6 7 (38.89%) Agile Software Development
6 7 (38.89%) ASP.NET
7 6 (33.33%) Oracle
7 6 (33.33%) SOA
7 6 (33.33%) Microsoft
7 6 (33.33%) Finance
7 6 (33.33%) Team Foundation Server
7 6 (33.33%) ADO.NET Entity Framework
8 5 (27.78%) jQuery
8 5 (27.78%) Continuous Integration
8 5 (27.78%) Derivative
8 5 (27.78%) NUnit
8 5 (27.78%) Banking
8 5 (27.78%) Scrum
8 5 (27.78%) OO
8 5 (27.78%) CSS
8 5 (27.78%) HTML
8 5 (27.78%) Java

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

For the 6 months to 27 February 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 (11.11%) Apache
1 2 (11.11%) Tomcat
2 1 (5.56%) SharePoint
Applications
1 2 (11.11%) MS Excel
Cloud Services
1 1 (5.56%) Amazon EC2
Database & Business Intelligence
1 10 (55.56%) SQL Server
2 3 (16.67%) Relational Database
3 1 (5.56%) RDBMS
3 1 (5.56%) SQL Server 2008
Development Applications
1 6 (33.33%) Team Foundation Server
2 5 (27.78%) NUnit
3 4 (22.22%) Maven
3 4 (22.22%) Ant
3 4 (22.22%) TeamCity
4 3 (16.67%) Subversion
4 3 (16.67%) MSTest
4 3 (16.67%) JIRA
4 3 (16.67%) Visual Studio Team System
5 2 (11.11%) CruiseControl
5 2 (11.11%) Visual Studio
5 2 (11.11%) IntelliJ
5 2 (11.11%) ProC
5 2 (11.11%) Mockito
5 2 (11.11%) MSBuild
5 2 (11.11%) SpecFlow
5 2 (11.11%) Git (software)
6 1 (5.56%) SQL Server Management Studio (SSMS)
General
1 6 (33.33%) Finance
2 5 (27.78%) Banking
3 2 (11.11%) Investment Banking
3 2 (11.11%) Financial Institution
4 1 (5.56%) Marketing
Job Titles
1 13 (72.22%) Developer
2 8 (44.44%) .NET Developer
3 4 (22.22%) Senior Developer
3 4 (22.22%) Architect
4 2 (11.11%) Technical Architect
4 2 (11.11%) Development Manager
4 2 (11.11%) Senior .NET Developer
4 2 (11.11%) .NET Architect
4 2 (11.11%) Front-End Developer
5 1 (5.56%) Android Developer
5 1 (5.56%) C# .NET Developer
5 1 (5.56%) Software Developer
5 1 (5.56%) C# Developer
5 1 (5.56%) Senior Software Developer
Libraries, Frameworks & Software Standards
1 11 (61.11%) .NET
1 11 (61.11%) WCF
1 11 (61.11%) .NET Framework
2 9 (50.00%) Unity DI Container
3 8 (44.44%) WPF
3 8 (44.44%) Web Services
4 7 (38.89%) ASP.NET
4 7 (38.89%) ASP.NET MVC
5 6 (33.33%) ADO.NET Entity Framework
6 5 (27.78%) HTML
6 5 (27.78%) jQuery
6 5 (27.78%) CSS
7 4 (22.22%) Spring
7 4 (22.22%) RESTful
7 4 (22.22%) Castle Windsor
7 4 (22.22%) Task Parallel Library
7 4 (22.22%) ASP.NET MVC 4
7 4 (22.22%) ASP.NET Web API
8 3 (16.67%) Ninject
8 3 (16.67%) Ajax
Miscellaneous
1 5 (27.78%) Derivative
2 3 (16.67%) Equity Derivative
3 2 (11.11%) N-Tier
3 2 (11.11%) Mobile App
4 1 (5.56%) Enterprise Software
4 1 (5.56%) Foreign Exchange (FX)
4 1 (5.56%) Equities
4 1 (5.56%) Tandem
4 1 (5.56%) Computer Science
4 1 (5.56%) Hedge funds
Operating Systems
1 4 (22.22%) Windows
2 2 (11.11%) UNIX
3 1 (5.56%) Android
Processes & Methodologies
1 15 (83.33%) TDD
2 11 (61.11%) MVC
3 7 (38.89%) Agile Software Development
4 6 (33.33%) SOA
5 5 (27.78%) OO
5 5 (27.78%) Scrum
5 5 (27.78%) Continuous Integration
6 4 (22.22%) Release Management
7 3 (16.67%) Memory Management
7 3 (16.67%) Dependency Injection
7 3 (16.67%) OOP
7 3 (16.67%) Software Engineering
7 3 (16.67%) Technical Architecture
8 2 (11.11%) Business Analysis
8 2 (11.11%) Risk Management
8 2 (11.11%) MVVM
8 2 (11.11%) BDD
8 2 (11.11%) Unit Testing
8 2 (11.11%) Domain-Driven Design
9 1 (5.56%) Parallel Programming
Programming Languages
1 10 (55.56%) C#
2 9 (50.00%) SQL
3 5 (27.78%) Java
3 5 (27.78%) JavaScript
4 3 (16.67%) PL/SQL
5 2 (11.11%) T-SQL
5 2 (11.11%) Shell Script
5 2 (11.11%) Groovy
5 2 (11.11%) Scala
6 1 (5.56%) XAML
6 1 (5.56%) VBA
Qualifications
1 1 (5.56%) Degree
1 1 (5.56%) SC Cleared
1 1 (5.56%) CTC Cleared
1 1 (5.56%) Security Cleared
Vendors
1 6 (33.33%) Oracle
1 6 (33.33%) Microsoft
2 3 (16.67%) Infragistics
2 3 (16.67%) Red Gate
3 2 (11.11%) Telerik
3 2 (11.11%) Google
3 2 (11.11%) Reuters
4 1 (5.56%) Bloomberg