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 2 December 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
2 Dec 2016
Same period 2015 Same period 2014
Inversion of Control (IoC)
Rank 155 152 197
Rank change year-on-year
-3 +45
Contract jobs citing Inversion of Control 8 5 11
As % of all contract IT jobs located in the City of London 0.25% 0.14% 0.19%
As % of the Miscellaneous category 0.61% 0.36% 0.50%
Number of daily rates quoted 8 3 7
Median daily rate £538 £355 £475
Median daily rate % change year-on-year
+51.40% -25.26%
90% offered a daily rate of more than £507 £343 £380
10% offered a daily rate of more than £550 £367 £581
UK excluding London median daily rate £349 £325 £350
% change year-on-year
+7.38% -7.14%
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
1314 1407 2221
As % of all contract IT jobs located in the City of London 40.71% 40.06% 37.84%
Number of daily rates quoted 992 1088 1725
Median daily rate £510 £500 £450
Median daily rate % change year-on-year
+2.00% +11.11%
90% offered a daily rate of more than £338 £300 £275
10% offered a daily rate of more than £650 £650 £650
UK excluding London median daily rate £375 £385 £363
% change year-on-year
-2.59% +6.20%
Number of hourly rates quoted 19 21 40
Median hourly rate £19.00 £20.00 £16.00
Median hourly rate % change year-on-year
-5.00% +25.00%
90% offered a hourly rate of more than £13.70 £13.00 £11.70
10% offered a hourly rate of more than £55.00 £28.00 £23.15
UK excluding London median hourly rate £18.50 £19.50 £16.75
% change year-on-year
-5.12% +16.41%

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 2 December 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 (83.33%) .NET
2 9 (75.00%) Web Services
2 9 (75.00%) C#
3 8 (66.67%) Java
3 8 (66.67%) J2EE
3 8 (66.67%) JSP
3 8 (66.67%) MVC
3 8 (66.67%) Finance
3 8 (66.67%) Hibernate
3 8 (66.67%) TIBCO
3 8 (66.67%) TDD
3 8 (66.67%) CruiseControl
3 8 (66.67%) Spring
3 8 (66.67%) TIBCO EMS
3 8 (66.67%) JSON
3 8 (66.67%) Continuous Integration
3 8 (66.67%) JPA
3 8 (66.67%) Build Forge
3 8 (66.67%) Dependency Injection
3 8 (66.67%) Hudson
3 8 (66.67%) REST
3 8 (66.67%) Jenkins
4 6 (50.00%) Agile Software Development
5 5 (41.67%) Banking
5 5 (41.67%) .NET Framework
5 5 (41.67%) Spring Boot
6 4 (33.33%) Low Latency
7 3 (25.00%) Scrum
7 3 (25.00%) Front Office
7 3 (25.00%) Business Intelligence

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 3 (25.00%) Apache Spark
Database & Business Intelligence
1 3 (25.00%) Data Warehouse
1 3 (25.00%) Hadoop
1 3 (25.00%) SQL Server
1 3 (25.00%) SQL Server Analysis Services
1 3 (25.00%) SQL Server Integration Services
1 3 (25.00%) SQL Server Reporting Services
2 2 (16.67%) MOLAP
Development Applications
1 8 (66.67%) Build Forge
1 8 (66.67%) CruiseControl
1 8 (66.67%) Hudson
1 8 (66.67%) Jenkins
General
1 8 (66.67%) Finance
2 5 (41.67%) Banking
3 3 (25.00%) Front Office
4 1 (8.33%) Back Office
Job Titles
1 11 (91.67%) Developer
2 8 (66.67%) Java Developer
3 5 (41.67%) Core Java Developer
3 5 (41.67%) Senior Developer
3 5 (41.67%) Senior Java Developer
4 4 (33.33%) .NET Developer
5 3 (25.00%) Business Intelligence Lead
5 3 (25.00%) C# .NET Developer
5 3 (25.00%) C# Developer
5 3 (25.00%) Senior .NET Developer
5 3 (25.00%) Senior C# .NET Developer
5 3 (25.00%) Senior C# Developer
6 2 (16.67%) Business Intelligence Developer
6 2 (16.67%) Front Office Developer
6 2 (16.67%) Lead Developer
6 2 (16.67%) Low Latency Java Developer
7 1 (8.33%) J2EE Developer
7 1 (8.33%) Java/J2EE Developer
7 1 (8.33%) Senior J2EE Developer
7 1 (8.33%) Senior Java/J2EE Developer
Libraries, Frameworks & Software Standards
1 10 (83.33%) .NET
2 9 (75.00%) Web Services
3 8 (66.67%) Hibernate
3 8 (66.67%) J2EE
3 8 (66.67%) JPA
3 8 (66.67%) JSON
3 8 (66.67%) JSP
3 8 (66.67%) REST
3 8 (66.67%) Spring
3 8 (66.67%) TIBCO EMS
4 5 (41.67%) .NET Framework
4 5 (41.67%) Spring Boot
5 3 (25.00%) Entity Framework
5 3 (25.00%) WPF
6 1 (8.33%) WF
6 1 (8.33%) XML
6 1 (8.33%) XML Messaging
Miscellaneous
1 3 (25.00%) Computer Science
1 3 (25.00%) Derivative
Operating Systems
1 1 (8.33%) Windows
Processes & Methodologies
1 8 (66.67%) Continuous Integration
1 8 (66.67%) Dependency Injection
1 8 (66.67%) MVC
1 8 (66.67%) TDD
2 6 (50.00%) Agile Software Development
3 4 (33.33%) Low Latency
4 3 (25.00%) Business Intelligence
4 3 (25.00%) DSDM
4 3 (25.00%) Multithreading
4 3 (25.00%) RUP
4 3 (25.00%) Scrum
4 3 (25.00%) SDLC
4 3 (25.00%) Unit Testing
4 3 (25.00%) Waterfall
5 2 (16.67%) ETL
6 1 (8.33%) Integration Testing
6 1 (8.33%) SOA
6 1 (8.33%) Software Engineering
6 1 (8.33%) User Acceptance Testing
6 1 (8.33%) Workflow
Programming Languages
1 9 (75.00%) C#
2 8 (66.67%) Java
3 3 (25.00%) Bash Shell
3 3 (25.00%) C
3 3 (25.00%) PowerShell
3 3 (25.00%) Python
3 3 (25.00%) VBA
4 2 (16.67%) T-SQL
Qualifications
1 3 (25.00%) Degree
Vendors
1 8 (66.67%) TIBCO
2 1 (8.33%) Microsoft