The following table provides summary statistics for contract job vacancies advertised in Solihull with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD 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.

Test-Driven Development (TDD)
West Midlands / Solihull
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 19 - -
Rank change year-on-year - 0  
Contract jobs citing TDD 1 0 0
As % of all contract IT jobs advertised in Solihull 0.88% - -
As % of the Processes & Methodologies category 1.54% - -
Number of daily rates quoted 1 0 0
Median daily rate £325 - -
UK excluding London median daily rate £405 £400 £375
% change year-on-year +1.12% +6.66%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £39.00 £45.75 £36.00
% change year-on-year -14.75% +27.08%  

TDD 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 Solihull with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Solihull
Contract job vacancies with a requirement for process and methodology skills 65 104 58
As % of all contract IT job vacancies advertised in Solihull 57.02% 88.89% 78.38%
Number of daily rates quoted 29 48 26
Median daily rate £338 £400 £375
Median daily rate % change year-on-year -15.62% +6.66%  
90% offered a daily rate of more than £238 £245 £200
10% offered a daily rate of more than £500 £650 £415
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 0 0 3
Median hourly rate - - £30.00
UK excluding London median hourly rate £36.00 £38.50 £30.20
% change year-on-year -6.49% +27.48%  

TDD
Job Vacancy Trend in Solihull

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

Job vacancy trend for TDD in Solihull

TDD
Contractor Daily Rate Trend in Solihull

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Solihull.

Contractor daily rate trend for TDD in Solihull

TDD
Top 30 Co-occurring IT Skills in Solihull

For the 6 months to 28 March 2017, IT contractor jobs citing TDD 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 Solihull region with a requirement for TDD.

1 4 (100.00%) C#
1 4 (100.00%) Visual Studio
1 4 (100.00%) .NET
1 4 (100.00%) Agile Software Development
2 3 (75.00%) WPF
2 3 (75.00%) Silverlight
2 3 (75.00%) Continuous Integration
2 3 (75.00%) Domain-Driven Design
2 3 (75.00%) VB.NET
2 3 (75.00%) XAML
2 3 (75.00%) Dependency Injection
2 3 (75.00%) MVVM
2 3 (75.00%) OOP
2 3 (75.00%) SOA
2 3 (75.00%) ETL
2 3 (75.00%) Microsoft
2 3 (75.00%) SOLID
3 2 (50.00%) WCF
3 2 (50.00%) SQL
4 1 (25.00%) T-SQL
4 1 (25.00%) JavaScript
4 1 (25.00%) ASP.NET
4 1 (25.00%) Web Services
4 1 (25.00%) XML
4 1 (25.00%) MVC
4 1 (25.00%) SQL Server
4 1 (25.00%) Entity Framework
4 1 (25.00%) Maven
4 1 (25.00%) Software Engineering
4 1 (25.00%) NHibernate

TDD
Co-occurring IT Skills in Solihull 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:

Database & Business Intelligence
1 1 (25.00%) SQL Server
Development Applications
1 4 (100.00%) Visual Studio
2 1 (25.00%) Maven
Job Titles
1 4 (100.00%) .NET Developer
1 4 (100.00%) Developer
2 2 (50.00%) WPF Developer
3 1 (25.00%) .NET Software Developer
3 1 (25.00%) Agile .NET Developer
3 1 (25.00%) Agile C# Developer
3 1 (25.00%) Agile Developer
3 1 (25.00%) C# .NET Developer
3 1 (25.00%) C# Developer
3 1 (25.00%) Software Developer
3 1 (25.00%) SQL Developer
3 1 (25.00%) SQL Server Developer
Libraries, Frameworks & Software Standards
1 4 (100.00%) .NET
2 3 (75.00%) Silverlight
2 3 (75.00%) WPF
3 2 (50.00%) WCF
4 1 (25.00%) .NET Framework
4 1 (25.00%) AngularJS
4 1 (25.00%) ASP.NET
4 1 (25.00%) ASP.NET Web API
4 1 (25.00%) Breeze.js
4 1 (25.00%) Durandal
4 1 (25.00%) Entity Framework
4 1 (25.00%) KnockoutJS
4 1 (25.00%) NHibernate
4 1 (25.00%) Twitter Bootstrap
4 1 (25.00%) Web Services
4 1 (25.00%) XML
Processes & Methodologies
1 4 (100.00%) Agile Software Development
2 3 (75.00%) Continuous Integration
2 3 (75.00%) Dependency Injection
2 3 (75.00%) Domain-Driven Design
2 3 (75.00%) ETL
2 3 (75.00%) MVVM
2 3 (75.00%) OOP
2 3 (75.00%) SOA
2 3 (75.00%) SOLID
3 1 (25.00%) MVC
3 1 (25.00%) Software Engineering
Programming Languages
1 4 (100.00%) C#
2 3 (75.00%) VB.NET
2 3 (75.00%) XAML
3 2 (50.00%) SQL
4 1 (25.00%) JavaScript
4 1 (25.00%) T-SQL
Vendors
1 3 (75.00%) Microsoft