The following table provides summary statistics for contract job vacancies advertised in England 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 March 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)
UK / England
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 532 559 551
Rank change year-on-year +27 -8  
Contract jobs citing Inversion of Control 51 55 54
As % of all contract IT jobs advertised in England 0.12% 0.11% 0.11%
As % of the Processes & Methodologies category 0.15% 0.13% 0.14%
Number of daily rates quoted 37 43 39
Median daily rate £360 £400 £415
Median daily rate % change year-on-year -10.00% -3.61%  
90% offered a daily rate of more than £320 £252 £298
10% offered a daily rate of more than £506 £525 £500
UK excluding London median daily rate £381 £363 £404
% change year-on-year +5.17% -10.21%  
Number of hourly rates quoted 1 0 0
Median hourly rate £40.50 - -
UK excluding London median hourly rate £40.50 - -

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 England with a requirement for process and methodology skills.

Contract Process & Methodology Skills
England
Contract job vacancies with a requirement for process and methodology skills 34656 40979 39244
As % of all contract IT job vacancies advertised in England 83.30% 82.95% 79.99%
Number of daily rates quoted 23008 27240 24713
Median daily rate £450 £438 £425
Median daily rate % change year-on-year +2.85% +2.94%  
90% offered a daily rate of more than £300 £300 £280
10% offered a daily rate of more than £600 £600 £585
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 862 1004 1153
Median hourly rate £36.00 £36.50 £27.50
Median hourly rate % change year-on-year -1.36% +32.72%  
90% offered a hourly rate of more than £13.00 £13.00 £12.00
10% offered a hourly rate of more than £52.50 £52.50 £48.82
UK excluding London median hourly rate £36.00 £38.50 £30.20
% change year-on-year -6.49% +27.48%  

Inversion of Control
Job Vacancy Trend in England

The job posting trend of jobs advertised in England citing Inversion of Control as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for Inversion of Control in England

Inversion of Control
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for Inversion of Control in England

Inversion of Control
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing Inversion of Control in England over the 3 months to 28 March 2017.

Contractor daily rate histogram for Inversion of Control in England

Inversion of Control
Contractor Hourly Rate Trend in England

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Inversion of Control in England.

Contractor hourly rate trend for Inversion of Control in England

Inversion of Control
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Inversion of Control within the England region over the 3 months to 28 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London +17 29 £360 -15.29% 11
West Midlands +15 5 £515 +11.35% 3
Yorkshire +20 4 £348 -0.57% 1
South East +6 3 £400 +6.66% 7
East Midlands - 3 £320 -
North East - 3 £385 -
North West +29 2 £340 +4.61% 6
East of England 0 2 £425 +13.33% 4
Inversion of Control
UK

For the 6 months to 28 March 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 England region with a requirement for Inversion of Control.

1 73 (66.97%) C#
2 72 (66.06%) Agile Software Development
3 71 (65.14%) .NET
4 55 (50.46%) SQL
5 53 (48.62%) MVC
5 53 (48.62%) TDD
6 44 (40.37%) Dependency Injection
7 42 (38.53%) Git (software)
7 42 (38.53%) SQL Server
8 37 (33.94%) T-SQL
8 37 (33.94%) Team Foundation Server
9 36 (33.03%) Microsoft Azure
9 36 (33.03%) Finance
10 33 (30.28%) REST
11 32 (29.36%) JavaScript
12 31 (28.44%) Java
12 31 (28.44%) Spring
13 30 (27.52%) Microsoft
14 29 (26.61%) PowerShell
15 28 (25.69%) WCF
16 27 (24.77%) ASP.NET
17 26 (23.85%) Web Services
17 26 (23.85%) BDD
18 25 (22.94%) jQuery
19 24 (22.02%) Continuous Integration
19 24 (22.02%) Visual Studio
20 23 (21.10%) Entity Framework
21 22 (20.18%) ASP.NET Web API
21 22 (20.18%) Linux
22 21 (19.27%) Windows

Inversion of Control
Co-occurring IT Skills in England 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 13 (11.93%) Tomcat
2 7 (6.42%) IIS
2 7 (6.42%) JBoss
2 7 (6.42%) Jetty
2 7 (6.42%) WebLogic
3 6 (5.50%) WebSphere
4 5 (4.59%) Apache
5 4 (3.67%) Apache Spark
5 4 (3.67%) NServiceBus
6 3 (2.75%) GlassFish
6 3 (2.75%) MS Project Server
6 3 (2.75%) Oracle SOA Suite
6 3 (2.75%) SharePoint
6 3 (2.75%) SharePoint 2010
6 3 (2.75%) SharePoint 2013
6 3 (2.75%) WebLogic Integration
6 3 (2.75%) WebLogic Portal
6 3 (2.75%) WebSphere Application Server
6 3 (2.75%) WebSphere Process Server
7 2 (1.83%) Elasticsearch
Applications
1 11 (10.09%) MS Excel
2 3 (2.75%) MS Project
3 2 (1.83%) Spreadsheet
Business Applications
1 3 (2.75%) Oracle BPM
2 1 (0.92%) Unit4 Business World
Cloud Services
1 36 (33.03%) Microsoft Azure
2 10 (9.17%) Amazon AWS
3 6 (5.50%) Amazon EC2
3 6 (5.50%) Amazon S3
3 6 (5.50%) AWS CloudFormation
4 4 (3.67%) PaaS
5 1 (0.92%) Asana
5 1 (0.92%) AWS Lambda
5 1 (0.92%) G Suite
5 1 (0.92%) GitHub
5 1 (0.92%) Google App Engine
5 1 (0.92%) Google Cloud Platform
5 1 (0.92%) IaaS
5 1 (0.92%) OpenShift
Communications & Networking
1 2 (1.83%) DNS
1 2 (1.83%) HTTP
1 2 (1.83%) Kerberos
2 1 (0.92%) Internet
2 1 (0.92%) Intranet
2 1 (0.92%) SSL
Database & Business Intelligence
1 42 (38.53%) SQL Server
2 15 (13.76%) NoSQL
3 13 (11.93%) SQL Server Integration Services
3 13 (11.93%) SQL Server Reporting Services
4 11 (10.09%) SQL Server Analysis Services
5 9 (8.26%) MongoDB
6 8 (7.34%) SQL Server 2012
7 6 (5.50%) SQL Server 2008
8 5 (4.59%) Hadoop
8 5 (4.59%) MySQL
8 5 (4.59%) RDBMS
8 5 (4.59%) Relational Database
9 4 (3.67%) Azure SQL Database
9 4 (3.67%) PostgreSQL
9 4 (3.67%) SQLite
10 3 (2.75%) DB2
10 3 (2.75%) Oracle Database
10 3 (2.75%) SQL Server 2016
11 2 (1.83%) SQL Server 2014
12 1 (0.92%) DocumentDB
Development Applications
1 42 (38.53%) Git (software)
2 37 (33.94%) Team Foundation Server
3 24 (22.02%) Visual Studio
4 20 (18.35%) Jenkins
5 17 (15.60%) NUnit
6 16 (14.68%) Maven
7 12 (11.01%) Hudson
8 11 (10.09%) CruiseControl
8 11 (10.09%) JUnit
9 10 (9.17%) Moq
10 9 (8.26%) Build Forge
10 9 (8.26%) MSBuild
11 7 (6.42%) Gradle
11 7 (6.42%) SpecFlow
12 5 (4.59%) Ant
12 5 (4.59%) MSTest
12 5 (4.59%) ReSharper
13 4 (3.67%) Jasmine
13 4 (3.67%) Selenium
13 4 (3.67%) TestNG
General
1 36 (33.03%) Finance
2 10 (9.17%) Banking
3 4 (3.67%) Front Office
4 2 (1.83%) Games
4 2 (1.83%) Investment Banking
4 2 (1.83%) Prime Brokerage
5 1 (0.92%) Multimedia
5 1 (0.92%) Retail
Job Titles
1 88 (80.73%) Developer
2 36 (33.03%) C# Developer
3 35 (32.11%) .NET Developer
4 28 (25.69%) Java Developer
5 19 (17.43%) Senior Developer
5 19 (17.43%) SQL Developer
6 18 (16.51%) C# .NET Developer
7 17 (15.60%) Software Engineer
8 11 (10.09%) Architect
8 11 (10.09%) C# Software Developer
8 11 (10.09%) Senior .NET Developer
9 10 (9.17%) C# Software Engineer
9 10 (9.17%) Developer/Software Engineer
9 10 (9.17%) Monitoring Engineer
9 10 (9.17%) Programmer
9 10 (9.17%) Senior Java Developer
9 10 (9.17%) Software Developer
9 10 (9.17%) SQL Server Developer
10 9 (8.26%) C# Programmer
10 9 (8.26%) Software Programmer
Libraries, Frameworks & Software Standards
1 71 (65.14%) .NET
2 33 (30.28%) REST
3 31 (28.44%) Spring
4 28 (25.69%) WCF
5 27 (24.77%) ASP.NET
6 26 (23.85%) Web Services
7 25 (22.94%) jQuery
8 23 (21.10%) Entity Framework
9 22 (20.18%) ASP.NET Web API
10 21 (19.27%) .NET Framework
11 20 (18.35%) Hibernate
11 20 (18.35%) J2EE
12 19 (17.43%) AngularJS
12 19 (17.43%) JPA
12 19 (17.43%) RESTful
13 16 (14.68%) ASP.NET MVC
13 16 (14.68%) HTML
14 15 (13.76%) Elastic Stack
14 15 (13.76%) JSON
15 14 (12.84%) Spring Boot
Miscellaneous
1 20 (18.35%) Analytical Skills
2 10 (9.17%) Mobile App
3 9 (8.26%) Computer Science
4 7 (6.42%) Derivative
5 3 (2.75%) DataPower
5 3 (2.75%) Enterprise Software
5 3 (2.75%) User Experience
6 2 (1.83%) Clustering
7 1 (0.92%) Animation
7 1 (0.92%) Data Centre
7 1 (0.92%) Equity Derivative
7 1 (0.92%) Fintech
7 1 (0.92%) Foreign Exchange (FX)
7 1 (0.92%) N-Tier
7 1 (0.92%) W3C
Operating Systems
1 22 (20.18%) Linux
2 21 (19.27%) Windows
3 15 (13.76%) Ubuntu
4 7 (6.42%) Unix
5 2 (1.83%) Android
5 2 (1.83%) Apple iOS
5 2 (1.83%) Windows Server
Processes & Methodologies
1 72 (66.06%) Agile Software Development
2 53 (48.62%) MVC
2 53 (48.62%) TDD
3 44 (40.37%) Dependency Injection
4 26 (23.85%) BDD
5 24 (22.02%) Continuous Integration
6 21 (19.27%) Software Engineering
7 20 (18.35%) SOLID
8 19 (17.43%) Scrum
9 15 (13.76%) Load Balancing
10 14 (12.84%) OO
11 13 (11.93%) SDLC
12 12 (11.01%) Web Development
13 11 (10.09%) DevOps
13 11 (10.09%) Unit Testing
14 10 (9.17%) Test Automation
15 8 (7.34%) Continuous Improvement
15 8 (7.34%) Migration
15 8 (7.34%) OOD
16 7 (6.42%) Mentoring
Programming Languages
1 73 (66.97%) C#
2 55 (50.46%) SQL
3 37 (33.94%) T-SQL
4 32 (29.36%) JavaScript
5 31 (28.44%) Java
6 29 (26.61%) PowerShell
7 11 (10.09%) VBA
8 9 (8.26%) TypeScript
9 7 (6.42%) VB
10 5 (4.59%) Bash Shell
10 5 (4.59%) VB.NET
11 4 (3.67%) C
11 4 (3.67%) Python
11 4 (3.67%) VB6
12 3 (2.75%) Perl
12 3 (2.75%) PL/SQL
13 1 (0.92%) C++
13 1 (0.92%) MATLAB
13 1 (0.92%) Objective-C
13 1 (0.92%) Ruby
Qualifications
1 11 (10.09%) Degree
2 1 (0.92%) SC Cleared
2 1 (0.92%) Security Cleared
Quality Assurance & Compliance
1 6 (5.50%) QA
2 1 (0.92%) Dodd-Frank
2 1 (0.92%) EMIR
System Software
1 5 (4.59%) Docker
2 1 (0.92%) Virtual Machines
Systems Management
1 3 (2.75%) Opscode Chef
1 3 (2.75%) Puppet
2 2 (1.83%) Kubernetes
3 1 (0.92%) Ansible
3 1 (0.92%) Marathon
3 1 (0.92%) Mesos
Vendors
1 30 (27.52%) Microsoft
2 10 (9.17%) Oracle
2 10 (9.17%) TIBCO
3 4 (3.67%) IBM
4 3 (2.75%) Google
4 3 (2.75%) Kony
4 3 (2.75%) Sybase
4 3 (2.75%) Telerik
5 2 (1.83%) DevExpress
5 2 (1.83%) Xamarin
5 2 (1.83%) Yahoo!
6 1 (0.92%) Apigee
6 1 (0.92%) Apple
6 1 (0.92%) CA
6 1 (0.92%) Twitter
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Fruition IT Resources Limited
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