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 contractor rates offered in IT contracts that have cited Inversion of Control over the 3 months to 31 August 2016 with a comparison to the same period over 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.

3 months to
31 Aug 2016
Same period 2015 Same period 2014
Inversion of Control (IoC)
Rank 174 197 203
Rank change year-on-year
+23 +6
Contract jobs citing Inversion of Control 4 5 6
As % of all contract IT jobs located in the City of London 0.12% 0.093% 0.10%
As % of the Miscellaneous category 0.29% 0.24% 0.28%
Number of daily rates quoted 2 5 5
Median daily rate £425 £350 £490
Median daily rate % change year-on-year
+21.42% -28.57%
90% offered a daily rate of more than £385 £343 £374
10% offered a daily rate of more than £465 £420 £587
UK excluding London median daily rate £365 £313 £350
% change year-on-year
+16.80% -10.71%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median 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
1368 2095 2147
As % of all contract IT jobs located in the City of London 39.33% 38.97% 36.91%
Number of daily rates quoted 1075 1651 1513
Median daily rate £475 £475 £475
90% offered a daily rate of more than £323 £300 £300
10% offered a daily rate of more than £650 £650 £650
UK excluding London median daily rate £375 £375 £350
% change year-on-year
- +7.14%
Number of hourly rates quoted 13 39 45
Median hourly rate £17.25 £20.50 £18.75
Median hourly rate % change year-on-year
-15.85% +9.33%
90% offered a hourly rate of more than £12.50 £12.60 £12.50
10% offered a hourly rate of more than £29.48 £39.05 £36.50
UK excluding London median hourly rate £22.25 £20.00 £19.00
% change year-on-year
+11.25% +5.26%

Inversion of Control
Jobs Demand Trend in the City of London

The demand trend of contract jobs across the City of London region citing Inversion of Control as a proportion of all IT contracts with a match in 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 31 August 2016, IT contractor jobs citing Inversion of Control 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 City of London region with a requirement for Inversion of Control.

1 10 (100.00%) .NET
2 9 (90.00%) Agile Software Development
3 8 (80.00%) .NET Framework
3 8 (80.00%) SQL Server
3 8 (80.00%) C#
3 8 (80.00%) SDLC
4 7 (70.00%) SQL Server Reporting Services
5 6 (60.00%) TDD
5 6 (60.00%) ASP.NET
5 6 (60.00%) MVC
6 5 (50.00%) Finance
6 5 (50.00%) SQL
6 5 (50.00%) Banking
6 5 (50.00%) WPF
6 5 (50.00%) Continuous Integration
6 5 (50.00%) ASP.NET MVC
7 4 (40.00%) Waterfall
7 4 (40.00%) BDD
7 4 (40.00%) Entity Framework
7 4 (40.00%) Software Testing
7 4 (40.00%) Scrum
7 4 (40.00%) Subversion
7 4 (40.00%) OO
7 4 (40.00%) OOD
7 4 (40.00%) Web Development
7 4 (40.00%) SpecFlow
8 3 (30.00%) Business Intelligence
8 3 (30.00%) RUP
8 3 (30.00%) DSDM
8 3 (30.00%) Data Warehouse

Inversion of Control
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:

Database & Business Intelligence
1 8 (80.00%) SQL Server
2 7 (70.00%) SQL Server Reporting Services
3 3 (30.00%) Data Warehouse
3 3 (30.00%) SQL Server Analysis Services
3 3 (30.00%) SQL Server Integration Services
4 2 (20.00%) MOLAP
Development Applications
1 4 (40.00%) SpecFlow
1 4 (40.00%) Subversion
2 1 (10.00%) CruiseControl
2 1 (10.00%) FitNesse
2 1 (10.00%) MSBuild
2 1 (10.00%) NUnit
2 1 (10.00%) Team Foundation Server
General
1 5 (50.00%) Banking
1 5 (50.00%) Finance
2 1 (10.00%) Back Office
2 1 (10.00%) Front Office
2 1 (10.00%) Investment Banking
Job Titles
1 9 (90.00%) Developer
2 5 (50.00%) .NET Developer
2 5 (50.00%) C# Developer
3 4 (40.00%) .NET Web Developer
3 4 (40.00%) ASP.NET Developer
3 4 (40.00%) C# .NET Developer
3 4 (40.00%) C# ASP.NET Developer
3 4 (40.00%) C# Web Developer
3 4 (40.00%) Web Developer
4 3 (30.00%) Business Intelligence Lead
5 2 (20.00%) Business Intelligence Developer
5 2 (20.00%) Lead Developer
6 1 (10.00%) Front Office Developer
6 1 (10.00%) Senior C# Developer
6 1 (10.00%) Senior Developer
6 1 (10.00%) SOA Developer
Libraries, Frameworks & Software Standards
1 10 (100.00%) .NET
2 8 (80.00%) .NET Framework
3 6 (60.00%) ASP.NET
4 5 (50.00%) ASP.NET MVC
4 5 (50.00%) WPF
5 4 (40.00%) Entity Framework
6 1 (10.00%) AngularJS
6 1 (10.00%) Autofac
6 1 (10.00%) AutoMapper
6 1 (10.00%) jQuery
6 1 (10.00%) LINQ
6 1 (10.00%) Struts
6 1 (10.00%) WCF
6 1 (10.00%) Web Services
6 1 (10.00%) WF
6 1 (10.00%) XML
6 1 (10.00%) XML Messaging
Operating Systems
1 2 (20.00%) Windows
Processes & Methodologies
1 9 (90.00%) Agile Software Development
2 8 (80.00%) SDLC
3 6 (60.00%) MVC
3 6 (60.00%) TDD
4 5 (50.00%) Continuous Integration
5 4 (40.00%) BDD
5 4 (40.00%) OO
5 4 (40.00%) OOD
5 4 (40.00%) Scrum
5 4 (40.00%) Software Testing
5 4 (40.00%) Waterfall
5 4 (40.00%) Web Development
6 3 (30.00%) Business Intelligence
6 3 (30.00%) DSDM
6 3 (30.00%) RUP
6 3 (30.00%) Unit Testing
7 2 (20.00%) ETL
8 1 (10.00%) RAD
8 1 (10.00%) SOA
8 1 (10.00%) Workflow
Programming Languages
1 8 (80.00%) C#
2 5 (50.00%) SQL
3 3 (30.00%) T-SQL
4 1 (10.00%) C++
4 1 (10.00%) Java
Vendors
1 2 (20.00%) Microsoft
2 1 (10.00%) Twitter