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 27 June 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
27 Jun 2016
Same period 2015 Same period 2014
Inversion of Control (IoC)
Rank 156 189 200
Rank change year-on-year
+33 +11
Contract jobs citing Inversion of Control 5 7 6
As % of all contract IT jobs located in the City of London 0.15% 0.12% 0.10%
As % of the Miscellaneous category 0.38% 0.32% 0.27%
Number of daily rates quoted 5 7 5
Median daily rate £375 £425 £450
Median daily rate % change year-on-year
-11.76% -5.55%
90% offered a daily rate of more than £250 £375 £375
10% offered a daily rate of more than £580 £501 £587
UK excluding London median daily rate £350 £325 £325
% change year-on-year
+7.69% -
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
1330 2188 2253
As % of all contract IT jobs located in the City of London 39.28% 38.13% 38.04%
Number of daily rates quoted 1097 1739 1677
Median daily rate £475 £475 £475
90% offered a daily rate of more than £300 £295 £285
10% offered a daily rate of more than £650 £650 £650
UK excluding London median daily rate £390 £375 £350
% change year-on-year
+4.00% +7.14%
Number of hourly rates quoted 17 40 28
Median hourly rate £17.50 £22.83 £20.50
Median hourly rate % change year-on-year
-23.34% +11.36%
90% offered a hourly rate of more than £12.50 £14.50 £13.40
10% offered a hourly rate of more than £53.00 £54.00 £36.00
UK excluding London median hourly rate £23.00 £18.47 £21.00
% change year-on-year
+24.52% -12.04%

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
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 27 June 2016.

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 27 June 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 16 (100.00%) .NET
2 14 (87.50%) C#
2 14 (87.50%) .NET Framework
3 13 (81.25%) Agile Software Development
3 13 (81.25%) TDD
4 12 (75.00%) SQL Server
4 12 (75.00%) Continuous Integration
5 11 (68.75%) OO
6 10 (62.50%) OOD
6 10 (62.50%) Finance
6 10 (62.50%) Banking
6 10 (62.50%) BDD
6 10 (62.50%) SDLC
7 9 (56.25%) SpecFlow
7 9 (56.25%) Subversion
7 9 (56.25%) MVC
7 9 (56.25%) Software Testing
8 7 (43.75%) ASP.NET
9 6 (37.50%) SQL Server Reporting Services
9 6 (37.50%) WPF
9 6 (37.50%) ASP.NET MVC
10 5 (31.25%) NancyFx
10 5 (31.25%) SQL
11 4 (25.00%) Microsoft
11 4 (25.00%) jQuery
11 4 (25.00%) Web Development
12 3 (18.75%) Investment Banking
12 3 (18.75%) CSS
12 3 (18.75%) Dependency Injection
12 3 (18.75%) Entity Framework

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:

Application Platforms
1 2 (12.50%) Elasticsearch
2 1 (6.25%) IIS
Applications
1 1 (6.25%) MS Excel
Cloud Services
1 2 (12.50%) GitHub
Database & Business Intelligence
1 12 (75.00%) SQL Server
2 6 (37.50%) SQL Server Reporting Services
3 2 (12.50%) Crystal Reports
Development Applications
1 9 (56.25%) SpecFlow
1 9 (56.25%) Subversion
2 2 (12.50%) Atlassian Bamboo
2 2 (12.50%) Bitbucket
2 2 (12.50%) Jenkins
3 1 (6.25%) CruiseControl
3 1 (6.25%) FitNesse
3 1 (6.25%) MSBuild
3 1 (6.25%) NUnit
3 1 (6.25%) Team Foundation Server
General
1 10 (62.50%) Banking
1 10 (62.50%) Finance
2 3 (18.75%) Investment Banking
3 1 (6.25%) Back Office
3 1 (6.25%) Front Office
Job Titles
1 16 (100.00%) Developer
2 12 (75.00%) C# Developer
3 10 (62.50%) .NET Developer
4 8 (50.00%) C# .NET Developer
5 5 (31.25%) ASP.NET Developer
5 5 (31.25%) C# ASP.NET Developer
6 4 (25.00%) .NET Web Developer
6 4 (25.00%) C# Web Developer
6 4 (25.00%) Web Developer
7 2 (12.50%) C# Developer - Investment Banking
7 2 (12.50%) C# Software Developer
7 2 (12.50%) Senior Developer
7 2 (12.50%) Software Developer
8 1 (6.25%) Agile Developer
8 1 (6.25%) ASP.NET MVC Developer
8 1 (6.25%) C# WCF Developer
8 1 (6.25%) Senior Sitecore Developer
8 1 (6.25%) Sitecore Developer
8 1 (6.25%) SOA Developer
8 1 (6.25%) WCF Developer
Libraries, Frameworks & Software Standards
1 16 (100.00%) .NET
2 14 (87.50%) .NET Framework
3 7 (43.75%) ASP.NET
4 6 (37.50%) ASP.NET MVC
4 6 (37.50%) WPF
5 5 (31.25%) NancyFx
6 4 (25.00%) jQuery
7 3 (18.75%) CSS
7 3 (18.75%) Entity Framework
8 2 (12.50%) ASP.NET Web Forms
8 2 (12.50%) Unity DI Container
8 2 (12.50%) WCF
8 2 (12.50%) Web Services
9 1 (6.25%) Ajax
9 1 (6.25%) HTML
9 1 (6.25%) Middleware
9 1 (6.25%) Rendezvous
9 1 (6.25%) Struts
9 1 (6.25%) XML
9 1 (6.25%) XML Messaging
Miscellaneous
1 2 (12.50%) NHS
2 1 (6.25%) Analytical Skills
2 1 (6.25%) Foreign Exchange (FX)
Operating Systems
1 2 (12.50%) Windows
2 1 (6.25%) Windows Server
Processes & Methodologies
1 13 (81.25%) Agile Software Development
1 13 (81.25%) TDD
2 12 (75.00%) Continuous Integration
3 11 (68.75%) OO
4 10 (62.50%) BDD
4 10 (62.50%) OOD
4 10 (62.50%) SDLC
5 9 (56.25%) MVC
5 9 (56.25%) Software Testing
6 4 (25.00%) Web Development
7 3 (18.75%) Dependency Injection
8 2 (12.50%) Business Intelligence
8 2 (12.50%) MVVM
8 2 (12.50%) Scrum
9 1 (6.25%) Electronic Trading
9 1 (6.25%) Multithreading
9 1 (6.25%) RAD
9 1 (6.25%) SOA
9 1 (6.25%) Software Engineering
9 1 (6.25%) Workflow
Programming Languages
1 14 (87.50%) C#
2 5 (31.25%) SQL
3 1 (6.25%) C++
3 1 (6.25%) Java
3 1 (6.25%) JavaScript
3 1 (6.25%) T-SQL
Vendors
1 4 (25.00%) Microsoft
2 1 (6.25%) Sitecore
2 1 (6.25%) TIBCO
2 1 (6.25%) Twitter