The following table provides summary statistics for contract job vacancies 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 25 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)
UK
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 525 595 568
Rank change year-on-year +70 -27  
Contract jobs citing Inversion of Control 62 57 68
As % of all contract IT jobs advertised in the UK 0.13% 0.11% 0.12%
As % of the Processes & Methodologies category 0.16% 0.13% 0.15%
Number of daily rates quoted 56 41 58
Median daily rate £500 £425 £375
Median daily rate % change year-on-year +17.64% +13.33%  
90% offered a daily rate of more than £345 £350 £293
10% offered a daily rate of more than £600 £613 £530
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 with a requirement for process and methodology skills.

Contract Process & Methodology Skills
UK
Contract job vacancies with a requirement for process and methodology skills 39103 44215 45229
As % of all contract IT job vacancies advertised in the UK 84.49% 83.33% 80.71%
Number of daily rates quoted 25496 29340 29026
Median daily rate £450 £438 £413
Median daily rate % change year-on-year +2.85% +6.06%  
90% offered a daily rate of more than £313 £300 £285
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £415 £400 £380
% change year-on-year +3.75% +5.26%  
Number of hourly rates quoted 1041 1070 1262
Median hourly rate £32.50 £27.50 £27.50
Median hourly rate % change year-on-year +18.18% -  
90% offered a hourly rate of more than £13.00 £12.58 £12.35
10% offered a hourly rate of more than £53.00 £48.70 £50.00
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

The job posting trend of jobs advertised 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 the UK

Inversion of Control
Contractor Daily Rate Trend

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

Contractor daily rate trend for Inversion of Control in the UK

Inversion of Control
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing Inversion of Control over the 3 months to 25 June 2017.

Contractor daily rate histogram for Inversion of Control in the UK

Inversion of Control
Contractor Hourly Rate Trend

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

Contractor hourly rate trend for Inversion of Control in the UK

Inversion of Control
Top 29 Contract Locations

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 UK over the 3 months to 25 June 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
England +53 61 £500 +17.64% 35
London +12 46 £550 +29.41% 15
City of London +9 11 £575 +53.33% 4
North West +25 5 £345 -4.16% 3
Manchester +12 4 £345 -4.16% 1
Canary Wharf - 4 £588 -
Yorkshire +19 3 £348 -4.00% 3
West Sussex - 3 £400 -
South East - 3 £400 - 3
Sheffield +7 2 £348 -10.19%
South Yorkshire +4 2 £348 -10.19%
East Grinstead - 2 £389 -
West Yorkshire +20 1 £310 -11.42%
Bury +2 1 - -
East of England -7 1 £338 +48.35% 6
Northern Ireland - 1 £338 -
Cambridgeshire - 1 £338 - 2
County Antrim - 1 £338 -
Peterborough - 1 £338 -
Belfast - 1 £338 -
Northamptonshire - 1 - -
Tyne and Wear - 1 £300 -
Cheshire - 1 £340 - 1
Worthing - 1 £400 -
South West - 1 - - 1
Bristol - 1 - - 1
Newcastle upon Tyne - 1 £300 -
East Midlands - 1 - -
North East - 1 £300 -

For the 6 months to 25 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 with a requirement for Inversion of Control.

1 90 (73.17%) .NET
2 87 (70.73%) C#
3 82 (66.67%) Agile Software Development
4 77 (62.60%) TDD
4 77 (62.60%) SQL
5 71 (57.72%) MVC
6 55 (44.72%) Dependency Injection
7 52 (42.28%) SQL Server
8 44 (35.77%) JavaScript
8 44 (35.77%) ASP.NET
9 41 (33.33%) T-SQL
9 41 (33.33%) Team Foundation Server
10 40 (32.52%) Git (software)
11 38 (30.89%) BDD
12 36 (29.27%) WCF
13 35 (28.46%) Microsoft
13 35 (28.46%) ASP.NET Web API
14 34 (27.64%) jQuery
15 33 (26.83%) Microsoft Azure
15 33 (26.83%) Scrum
15 33 (26.83%) Visual Studio
16 32 (26.02%) Finance
17 31 (25.20%) ASP.NET MVC
18 30 (24.39%) Continuous Integration
18 30 (24.39%) .NET Framework
19 28 (22.76%) CSS
20 27 (21.95%) Entity Framework
20 27 (21.95%) SOLID
21 26 (21.14%) Software Engineering
21 26 (21.14%) WPF

Inversion of Control
Co-occurring IT Skills 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 9 (7.32%) JBoss
1 9 (7.32%) WebLogic
2 8 (6.50%) Tomcat
3 6 (4.88%) IIS
3 6 (4.88%) SharePoint
3 6 (4.88%) WebSphere
4 5 (4.07%) Elasticsearch
5 4 (3.25%) Apache
5 4 (3.25%) NServiceBus
6 3 (2.44%) CMS
6 3 (2.44%) GlassFish
6 3 (2.44%) MS Project Server
6 3 (2.44%) SharePoint 2010
6 3 (2.44%) SharePoint 2013
6 3 (2.44%) WebLogic Integration
6 3 (2.44%) WebLogic Portal
6 3 (2.44%) WebSphere Application Server
6 3 (2.44%) WebSphere Process Server
7 2 (1.63%) Oracle SOA Suite
8 1 (0.81%) EPiServer
Applications
1 5 (4.07%) Microsoft Excel
2 3 (2.44%) Microsoft Project
3 2 (1.63%) Spreadsheet
Business Applications
1 3 (2.44%) Oracle BPM
2 1 (0.81%) Unit4 Business World
Cloud Services
1 33 (26.83%) Microsoft Azure
2 8 (6.50%) PaaS
3 6 (4.88%) Amazon AWS
4 4 (3.25%) OpenShift
5 1 (0.81%) Amazon EC2
5 1 (0.81%) Amazon S3
5 1 (0.81%) AWS CloudFormation
5 1 (0.81%) AWS Lambda
5 1 (0.81%) G Suite
5 1 (0.81%) GitHub
5 1 (0.81%) Google App Engine
5 1 (0.81%) Google Cloud Platform
5 1 (0.81%) IaaS
5 1 (0.81%) SaaS
Communications & Networking
1 2 (1.63%) DNS
1 2 (1.63%) HTTP
1 2 (1.63%) Kerberos
2 1 (0.81%) Internet
2 1 (0.81%) Intranet
Database & Business Intelligence
1 52 (42.28%) SQL Server
2 18 (14.63%) SQL Server Integration Services
3 13 (10.57%) SQL Server Analysis Services
3 13 (10.57%) SQL Server Reporting Services
4 11 (8.94%) SQL Server 2008
5 10 (8.13%) NoSQL
5 10 (8.13%) Relational Database
6 8 (6.50%) SQL Server 2012
7 7 (5.69%) RDBMS
8 6 (4.88%) Oracle Database
9 5 (4.07%) Azure SQL Database
10 3 (2.44%) Data Warehouse
10 3 (2.44%) DB2
10 3 (2.44%) MOLAP
10 3 (2.44%) Oracle Database 12c
10 3 (2.44%) Redis
10 3 (2.44%) SQL Server 2016
10 3 (2.44%) SSDT
11 2 (1.63%) MongoDB
11 2 (1.63%) SQL Server 2014
Development Applications
1 41 (33.33%) Team Foundation Server
2 40 (32.52%) Git (software)
3 33 (26.83%) Visual Studio
4 24 (19.51%) NUnit
5 12 (9.76%) TeamCity
6 11 (8.94%) Jenkins
7 10 (8.13%) MSBuild
7 10 (8.13%) Selenium
8 9 (7.32%) SpecFlow
9 8 (6.50%) Cucumber
9 8 (6.50%) JUnit
9 8 (6.50%) Maven
9 8 (6.50%) Moq
9 8 (6.50%) MSTest
9 8 (6.50%) ReSharper
10 7 (5.69%) Octopus Deploy
11 5 (4.07%) Gradle
11 5 (4.07%) Jasmine
11 5 (4.07%) Sonatype Nexus
12 4 (3.25%) NuGet
General
1 32 (26.02%) Finance
2 20 (16.26%) Banking
3 15 (12.20%) Front Office
4 6 (4.88%) Investment Banking
5 3 (2.44%) Advertising
5 3 (2.44%) Retail
6 2 (1.63%) Back Office
6 2 (1.63%) Prime Brokerage
7 1 (0.81%) Games
7 1 (0.81%) Marketing
7 1 (0.81%) Multimedia
Job Titles
1 101 (82.11%) Developer
2 50 (40.65%) .NET Developer
3 46 (37.40%) C# Developer
4 23 (18.70%) C# .NET Developer
5 19 (15.45%) Software Engineer
6 18 (14.63%) Senior Developer
7 16 (13.01%) SQL Developer
8 13 (10.57%) Java Developer
9 10 (8.13%) ASP.NET Developer
9 10 (8.13%) C# Software Engineer
9 10 (8.13%) Developer/Software Engineer
9 10 (8.13%) Monitoring Engineer
9 10 (8.13%) Programmer
9 10 (8.13%) Senior .NET Developer
9 10 (8.13%) Software Developer
10 9 (7.32%) C# ASP.NET Developer
10 9 (7.32%) C# Programmer
10 9 (7.32%) Monitoring Developer
10 9 (7.32%) Senior C# Developer
10 9 (7.32%) Software Programmer
Libraries, Frameworks & Software Standards
1 90 (73.17%) .NET
2 44 (35.77%) ASP.NET
3 36 (29.27%) WCF
4 35 (28.46%) ASP.NET Web API
5 34 (27.64%) jQuery
6 31 (25.20%) ASP.NET MVC
7 30 (24.39%) .NET Framework
8 28 (22.76%) CSS
9 27 (21.95%) Entity Framework
10 26 (21.14%) WPF
11 25 (20.33%) Web Services
12 24 (19.51%) REST
13 23 (18.70%) AngularJS
14 22 (17.89%) HTML
14 22 (17.89%) XML
15 20 (16.26%) RESTful
16 16 (13.01%) Hibernate
16 16 (13.01%) Spring
16 16 (13.01%) Unity DI Container
17 15 (12.20%) Elastic Stack
Miscellaneous
1 20 (16.26%) Greenfield Project
2 19 (15.45%) Analytical Skills
3 12 (9.76%) Foreign Exchange (FX)
4 6 (4.88%) Equities
5 5 (4.07%) Enterprise Software
5 5 (4.07%) Fixed Income
5 5 (4.07%) Hedge funds
5 5 (4.07%) Market Risk
6 4 (3.25%) Derivative
6 4 (3.25%) Mobile App
6 4 (3.25%) User Experience
7 3 (2.44%) Client/Server
7 3 (2.44%) DataPower
7 3 (2.44%) Linked Data
8 2 (1.63%) Clustering
9 1 (0.81%) Data Centre
9 1 (0.81%) Equity Derivative
9 1 (0.81%) Fintech
9 1 (0.81%) N-Tier
Operating Systems
1 18 (14.63%) Linux
2 15 (12.20%) Ubuntu
2 15 (12.20%) Windows
3 2 (1.63%) Unix
4 1 (0.81%) Android
4 1 (0.81%) Apple iOS
4 1 (0.81%) Windows Server
Processes & Methodologies
1 82 (66.67%) Agile Software Development
2 77 (62.60%) TDD
3 71 (57.72%) MVC
4 55 (44.72%) Dependency Injection
5 38 (30.89%) BDD
6 33 (26.83%) Scrum
7 30 (24.39%) Continuous Integration
8 27 (21.95%) SOLID
9 26 (21.14%) Software Engineering
10 25 (20.33%) Unit Testing
11 23 (18.70%) Web Development
12 22 (17.89%) Test Automation
13 19 (15.45%) MVVM
14 16 (13.01%) OO
15 15 (12.20%) Break/Fix
15 15 (12.20%) Load Balancing
16 14 (11.38%) Kanban
16 14 (11.38%) SDLC
17 13 (10.57%) DevOps
17 13 (10.57%) Multithreading
Programming Languages
1 87 (70.73%) C#
2 77 (62.60%) SQL
3 44 (35.77%) JavaScript
4 41 (33.33%) T-SQL
5 23 (18.70%) Java
6 21 (17.07%) PowerShell
7 11 (8.94%) TypeScript
8 7 (5.69%) PL/SQL
9 5 (4.07%) C++
9 5 (4.07%) VBA
10 4 (3.25%) Perl
11 3 (2.44%) VB
12 2 (1.63%) Python
13 1 (0.81%) Bash Shell
13 1 (0.81%) Google Apps Script
13 1 (0.81%) Groovy
13 1 (0.81%) Scala
13 1 (0.81%) Shell Script
13 1 (0.81%) VB.NET
Qualifications
1 3 (2.44%) Degree
2 2 (1.63%) Numerate Degree
3 1 (0.81%) Microsoft Certification
3 1 (0.81%) SC Cleared
3 1 (0.81%) Security Cleared
Quality Assurance & Compliance
1 8 (6.50%) QA
2 1 (0.81%) Dodd-Frank
2 1 (0.81%) EMIR
System Software
1 2 (1.63%) Docker
Systems Management
1 3 (2.44%) Opscode Chef
1 3 (2.44%) Puppet
2 1 (0.81%) Kubernetes
2 1 (0.81%) yum
Vendors
1 35 (28.46%) Microsoft
2 10 (8.13%) Oracle
3 4 (3.25%) IBM
3 4 (3.25%) Sybase
4 3 (2.44%) Google
4 3 (2.44%) Kony
4 3 (2.44%) MuleSoft
4 3 (2.44%) Red Hat
4 3 (2.44%) Telerik
5 2 (1.63%) DevExpress
5 2 (1.63%) Sitecore
5 2 (1.63%) TIBCO
5 2 (1.63%) Virgin Media
5 2 (1.63%) Yahoo!
6 1 (0.81%) Barracuda Networks
6 1 (0.81%) Bloomberg
6 1 (0.81%) CA
6 1 (0.81%) FXall
6 1 (0.81%) GigaSpaces
6 1 (0.81%) Reuters
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