The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Inversion of Control skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Inversion of Control over the 3 months to 28 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Inversion of Control (IoC)
London / City of London
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 155 160 198
Rank change year-on-year +5 +38  
Contract jobs citing Inversion of Control 11 5 7
As % of all contract IT jobs advertised in the City of London 0.34% 0.15% 0.12%
As % of the Processes & Methodologies category 0.38% 0.17% 0.15%
Number of daily rates quoted 10 5 7
Median daily rate £575 £375 £425
Median daily rate % change year-on-year +53.33% -11.76%  
90% offered a daily rate of more than £365 £250 £358
10% offered a daily rate of more than £638 £605 £511
UK excluding London median daily rate £345 £355 £325
% change year-on-year -2.81% +9.23%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Inversion of Control is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for process and methodology skills.

Contract Process & Methodology Skills
City of London
Contract job vacancies with a requirement for process and methodology skills 2879 2886 4657
As % of all contract IT job vacancies advertised in the City of London 88.23% 85.71% 81.12%
Number of daily rates quoted 8879 9203 12866
Median daily rate £500 £475 £465
Median daily rate % change year-on-year +5.26% +2.15%  
90% offered a daily rate of more than £340 £319 £313
10% offered a daily rate of more than £675 £656 £650
UK excluding London median daily rate £415 £400 £380
% change year-on-year +3.75% +5.26%  
Number of hourly rates quoted 55 90 126
Median hourly rate £20.00 £19.00 £24.50
Median hourly rate % change year-on-year +5.26% -22.44%  
90% offered a hourly rate of more than £14.00 £11.25 £14.71
10% offered a hourly rate of more than £43.00 £34.53 £55.75
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

Inversion of Control
Job Vacancy Trend in the City of London

Job postings citing Inversion of Control as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Inversion of Control in the City of London

Inversion of Control
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Inversion of Control in the City of London

Inversion of Control
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Inversion of Control in the City of London over the 3 months to 28 June 2017.

Contractor daily rate histogram for Inversion of Control in the City of London

For the 6 months to 28 June 2017, 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 13 (86.67%) TDD
2 12 (80.00%) C#
3 11 (73.33%) JavaScript
3 11 (73.33%) WCF
4 10 (66.67%) MVC
4 10 (66.67%) SQL
5 9 (60.00%) .NET
5 9 (60.00%) CSS
6 8 (53.33%) Foreign Exchange (FX)
6 8 (53.33%) WPF
7 7 (46.67%) Web Development
7 7 (46.67%) Banking
7 7 (46.67%) Finance
7 7 (46.67%) OO
7 7 (46.67%) Front Office
8 6 (40.00%) Unit Testing
8 6 (40.00%) Dependency Injection
8 6 (40.00%) MVVM
9 5 (33.33%) Multithreading
9 5 (33.33%) Hedge funds
9 5 (33.33%) Task Parallel Library
9 5 (33.33%) Unity DI Container
9 5 (33.33%) Performance Optimisation
9 5 (33.33%) Multithreaded Programming
9 5 (33.33%) Scrum
9 5 (33.33%) Agile Software Development
9 5 (33.33%) SQL Server Integration Services
10 4 (26.67%) NHibernate
10 4 (26.67%) SQL Server
10 4 (26.67%) ASP.NET

Inversion of Control
Co-occurring 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 (13.33%) IIS
2 1 (6.67%) Elasticsearch
Cloud Services
1 3 (20.00%) Microsoft Azure
2 1 (6.67%) Amazon AWS
2 1 (6.67%) GitHub
Communications & Networking
1 2 (13.33%) HTTP
Database & Business Intelligence
1 5 (33.33%) SQL Server Integration Services
2 4 (26.67%) SQL Server
3 2 (13.33%) SQL Server 2008
4 1 (6.67%) RDBMS
4 1 (6.67%) Redis
4 1 (6.67%) Relational Database
Development Applications
1 3 (20.00%) Moq
1 3 (20.00%) NUnit
1 3 (20.00%) Selenium
1 3 (20.00%) Visual Studio
2 2 (13.33%) Cucumber
2 2 (13.33%) Git (software)
2 2 (13.33%) NMock
2 2 (13.33%) ReSharper
2 2 (13.33%) Rhino Mocks
2 2 (13.33%) Team Foundation Server
2 2 (13.33%) TeamCity
3 1 (6.67%) dotTrace
3 1 (6.67%) Jenkins
3 1 (6.67%) LINQPad
General
1 7 (46.67%) Banking
1 7 (46.67%) Finance
1 7 (46.67%) Front Office
2 1 (6.67%) Games
2 1 (6.67%) Retail
Job Titles
1 13 (86.67%) Developer
2 8 (53.33%) C# Developer
3 5 (33.33%) Senior C# Developer
3 5 (33.33%) Senior Developer
4 3 (20.00%) .NET Developer
4 3 (20.00%) Full Stack Developer
5 2 (13.33%) Architect
5 2 (13.33%) Web Developer
6 1 (6.67%) .NET Architect
6 1 (6.67%) Azure Architect
6 1 (6.67%) C# .NET Developer
6 1 (6.67%) Elasticsearch Developer
6 1 (6.67%) Front Office Developer
6 1 (6.67%) Full Stack Web Developer
6 1 (6.67%) Java Developer
6 1 (6.67%) Solutions Architect
Libraries, Frameworks & Software Standards
1 11 (73.33%) WCF
2 9 (60.00%) .NET
2 9 (60.00%) CSS
3 8 (53.33%) WPF
4 5 (33.33%) Task Parallel Library
4 5 (33.33%) Unity DI Container
5 4 (26.67%) ASP.NET
5 4 (26.67%) HTML
5 4 (26.67%) NHibernate
6 3 (20.00%) .NET Framework
6 3 (20.00%) ASP.NET MVC
6 3 (20.00%) jQuery
7 2 (13.33%) ASP.NET Web API
7 2 (13.33%) JSON
7 2 (13.33%) LINQ
7 2 (13.33%) REST
7 2 (13.33%) SOAP
7 2 (13.33%) XML
7 2 (13.33%) XSD
8 1 (6.67%) Rendezvous
Miscellaneous
1 8 (53.33%) Foreign Exchange (FX)
2 5 (33.33%) Hedge funds
3 3 (20.00%) Analytical Skills
4 2 (13.33%) Equities
4 2 (13.33%) Fixed Income
4 2 (13.33%) Market Risk
Operating Systems
1 2 (13.33%) Windows
Processes & Methodologies
1 13 (86.67%) TDD
2 10 (66.67%) MVC
3 7 (46.67%) OO
3 7 (46.67%) Web Development
4 6 (40.00%) Dependency Injection
4 6 (40.00%) MVVM
4 6 (40.00%) Unit Testing
5 5 (33.33%) Agile Software Development
5 5 (33.33%) Multithreaded Programming
5 5 (33.33%) Multithreading
5 5 (33.33%) Performance Optimisation
5 5 (33.33%) Scrum
6 4 (26.67%) BDD
7 2 (13.33%) Asynchronous Programming
7 2 (13.33%) Mentoring
7 2 (13.33%) SOLID
8 1 (6.67%) Electronic Trading
8 1 (6.67%) Functional Programming
8 1 (6.67%) Microservices
8 1 (6.67%) Software Architecture
Programming Languages
1 12 (80.00%) C#
2 11 (73.33%) JavaScript
3 10 (66.67%) SQL
4 3 (20.00%) T-SQL
5 1 (6.67%) Java
5 1 (6.67%) Python
5 1 (6.67%) VB
5 1 (6.67%) VB.NET
Quality Assurance & Compliance
1 2 (13.33%) QA
System Software
1 1 (6.67%) Docker
Vendors
1 2 (13.33%) Microsoft
1 2 (13.33%) Telerik
2 1 (6.67%) TIBCO
City, London
Haysfm
Rate: £550.00 - £650.00 per day
Posted: 6 days ago