Period
to 19 November 2017

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 6 months to 19 November 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)
Central London > City of London
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 229 241 259
Rank change year-on-year +12 +18 +30
Contract jobs citing Inversion of Control 11 12 12
As % of all contract IT jobs advertised in the City of London 0.16% 0.18% 0.13%
As % of the Processes & Methodologies category 0.18% 0.21% 0.16%
Number of daily rates quoted 9 10 10
City of London median daily rate £525 £525 £363
Median daily rate % change year-on-year - +44.83% -25.26%
10th Percentile £478 £448 £335
90th Percentile £628 £563 £447
Central London median daily rate £519 £525 £363
% change year-on-year -1.19% +44.83% -23.68%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Inversion of Control is in the Processes and Methodologies category. The following 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 or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 6210 5816 7704
As % of all contract IT jobs advertised in the City of London 88.39% 87.43% 83.88%
Number of daily rates quoted 4932 4656 6127
City of London median daily rate £513 £475 £463
Median daily rate % change year-on-year +7.89% +2.70% +2.78%
10th Percentile £325 £313 £288
90th Percentile £688 £664 £650
Central London median daily rate £500 £475 £451
% change year-on-year +5.26% +5.44% +0.67%
Number of hourly rates quoted 59 53 73
City of London median hourly rate £20.00 £20.00 £21.00
Median hourly rate % change year-on-year - -4.76% +10.53%
10th Percentile £13.34 £13.75 £10.87
90th Percentile £30.90 £54.03 £40.00
Central London median hourly rate £20.25 £19.46 £20.50
% change year-on-year +4.06% -5.07% +13.92%

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 6 months to 19 November 2017.

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

For the 6 months to 19 November 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 10 (90.91%) .NET
2 8 (72.73%) C#
2 8 (72.73%) TDD
3 6 (54.55%) JavaScript
3 6 (54.55%) SQL
3 6 (54.55%) MVC
3 6 (54.55%) .NET Framework
3 6 (54.55%) WCF
3 6 (54.55%) Microsoft Azure
3 6 (54.55%) .NET Core
4 5 (45.45%) ASP.NET Web API
4 5 (45.45%) Agile Software Development
4 5 (45.45%) ASP.NET MVC
4 5 (45.45%) WPF
4 5 (45.45%) ASP.NET
4 5 (45.45%) Scrum
4 5 (45.45%) Foreign Exchange (FX)
5 4 (36.36%) Visual Studio
5 4 (36.36%) Front Office
5 4 (36.36%) Web Services
5 4 (36.36%) RESTful
6 3 (27.27%) Amazon AWS
6 3 (27.27%) Team Foundation Server
6 3 (27.27%) Dependency Injection
6 3 (27.27%) BDD
6 3 (27.27%) LINQ
6 3 (27.27%) Market Risk
6 3 (27.27%) Unit Testing
6 3 (27.27%) NHibernate
6 3 (27.27%) Pair Programming

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 3 (27.27%) Elasticsearch
Cloud Services
1 6 (54.55%) Microsoft Azure
2 3 (27.27%) Amazon AWS
3 1 (9.09%) SaaS
Database & Business Intelligence
1 3 (27.27%) MongoDB
1 3 (27.27%) NoSQL
2 1 (9.09%) SQL Server
2 1 (9.09%) SQL Server Integration Services
Development Applications
1 4 (36.36%) Visual Studio
2 3 (27.27%) Team Foundation Server
3 1 (9.09%) dotCover
3 1 (9.09%) NDepend
3 1 (9.09%) Octopus Deploy
3 1 (9.09%) TeamCity
General
1 4 (36.36%) Front Office
2 2 (18.18%) Finance
3 1 (9.09%) Banking
3 1 (9.09%) Law
Job Titles
1 10 (90.91%) Developer
2 7 (63.64%) .NET Developer
3 5 (45.45%) C# Developer
4 2 (18.18%) ASP.NET Developer
4 2 (18.18%) ASP.NET MVC Developer
4 2 (18.18%) Azure Developer
4 2 (18.18%) C# .NET Developer
4 2 (18.18%) Front Office Developer
5 1 (9.09%) C# WPF Developer
5 1 (9.09%) DevOps Engineer
5 1 (9.09%) Full Stack Developer
5 1 (9.09%) Senior C# Developer
5 1 (9.09%) Senior Developer
5 1 (9.09%) WPF Developer
Libraries, Frameworks & Software Standards
1 10 (90.91%) .NET
2 6 (54.55%) .NET Core
2 6 (54.55%) .NET Framework
2 6 (54.55%) WCF
3 5 (45.45%) ASP.NET
3 5 (45.45%) ASP.NET MVC
3 5 (45.45%) ASP.NET Web API
3 5 (45.45%) WPF
4 4 (36.36%) RESTful
4 4 (36.36%) Web Services
5 3 (27.27%) CSS
5 3 (27.27%) Entity Framework
5 3 (27.27%) LINQ
5 3 (27.27%) NHibernate
5 3 (27.27%) REST
6 2 (18.18%) AngularJS
6 2 (18.18%) CSS3
6 2 (18.18%) HTML
6 2 (18.18%) HTML5
6 2 (18.18%) WF
Miscellaneous
1 5 (45.45%) Foreign Exchange (FX)
2 3 (27.27%) Equities
2 3 (27.27%) Fixed Income
2 3 (27.27%) Market Risk
3 1 (9.09%) Analytical Skills
3 1 (9.09%) Hedge funds
Operating Systems
1 3 (27.27%) Windows
Processes & Methodologies
1 8 (72.73%) TDD
2 6 (54.55%) MVC
3 5 (45.45%) Agile Software Development
3 5 (45.45%) Scrum
4 3 (27.27%) BDD
4 3 (27.27%) Dependency Injection
4 3 (27.27%) Extreme Programming
4 3 (27.27%) Microservices
4 3 (27.27%) Pair Programming
4 3 (27.27%) SOA
4 3 (27.27%) Unit Testing
5 2 (18.18%) Front End Development
5 2 (18.18%) MVVM
5 2 (18.18%) OO
5 2 (18.18%) Test Automation
6 1 (9.09%) Configuration Management
6 1 (9.09%) Continuous Integration
6 1 (9.09%) Document Management
6 1 (9.09%) Multithreading
6 1 (9.09%) OOD
Programming Languages
1 8 (72.73%) C#
2 6 (54.55%) JavaScript
2 6 (54.55%) SQL
3 3 (27.27%) T-SQL
4 2 (18.18%) PowerShell
5 1 (9.09%) Bash Shell
5 1 (9.09%) Python
Systems Management
1 1 (9.09%) Ansible
1 1 (9.09%) Opscode Chef
1 1 (9.09%) Puppet
1 1 (9.09%) Terraform
Vendors
1 2 (18.18%) Microsoft
2 1 (9.09%) TIBCO