The following table provides summary statistics for contract job vacancies advertised in Stoke-on-Trent 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 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.

Test-Driven Development (TDD)
Staffordshire / Stoke-on-Trent
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 4 - 11
Rank change year-on-year - 0  
Contract jobs citing TDD 14 0 1
As % of all contract IT jobs advertised in Stoke-on-Trent 29.17% - 3.03%
As % of the Processes & Methodologies category 43.75% - 3.57%
Number of daily rates quoted 11 0 1
Median daily rate £335 - £340
UK excluding London median daily rate £420 £413 £375
% change year-on-year +1.81% +10.00%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £41.50 £40.00 £43.75
% change year-on-year +3.75% -8.57%  

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 Stoke-on-Trent with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Stoke-on-Trent
Contract job vacancies with a requirement for process and methodology skills 32 56 28
As % of all contract IT job vacancies advertised in Stoke-on-Trent 66.67% 78.87% 84.85%
Number of daily rates quoted 27 40 19
Median daily rate £335 £400 £325
Median daily rate % change year-on-year -16.25% +23.07%  
90% offered a daily rate of more than £232 £200 £275
10% offered a daily rate of more than £415 £575 £475
UK excluding London median daily rate £415 £400 £380
% change year-on-year +3.75% +5.26%  
Number of hourly rates quoted 0 0 2
Median hourly rate - - £17.25
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

TDD
Job Vacancy Trend in Stoke-on-Trent

The job posting trend of jobs advertised in Stoke-on-Trent 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 Stoke-on-Trent

TDD
Contractor Daily Rate Trend in Stoke-on-Trent

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

Contractor daily rate trend for TDD in Stoke-on-Trent

For the 6 months to 25 June 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 Stoke-on-Trent region with a requirement for TDD.

1 16 (100.00%) C#
2 15 (93.75%) HTML
3 14 (87.50%) .NET
3 14 (87.50%) SQL Server
3 14 (87.50%) CSS
4 12 (75.00%) HTML5
5 11 (68.75%) SOLID
6 10 (62.50%) Agile Software Development
7 9 (56.25%) WPF
7 9 (56.25%) SQL Server 2008
7 9 (56.25%) MySQL
7 9 (56.25%) Line Management
7 9 (56.25%) Mentoring
7 9 (56.25%) Microservices
7 9 (56.25%) AngularJS
8 7 (43.75%) Angular 2
9 5 (31.25%) MVC
9 5 (31.25%) jQuery
10 3 (18.75%) Unit Testing
10 3 (18.75%) OOA/OOD
10 3 (18.75%) SQL
10 3 (18.75%) Dependency Injection
10 3 (18.75%) SpecFlow
10 3 (18.75%) Responsive Web Design
10 3 (18.75%) Sass
10 3 (18.75%) BDD
10 3 (18.75%) TypeScript
10 3 (18.75%) ASP.NET Web Forms
10 3 (18.75%) ASP.NET Web API
11 2 (12.50%) React

TDD
Co-occurring IT Skills in Stoke-on-Trent 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 14 (87.50%) SQL Server
2 9 (56.25%) MySQL
2 9 (56.25%) SQL Server 2008
Development Applications
1 3 (18.75%) SpecFlow
2 2 (12.50%) Git (software)
2 2 (12.50%) Jenkins
2 2 (12.50%) Selenium
2 2 (12.50%) Subversion
2 2 (12.50%) TeamCity
Job Titles
1 16 (100.00%) C# Developer
1 16 (100.00%) Developer
2 11 (68.75%) Full Stack Developer
2 11 (68.75%) HTML CSS Developer
2 11 (68.75%) HTML Developer
3 6 (37.50%) Angular Developer
3 6 (37.50%) C# WPF Developer
3 6 (37.50%) WPF Developer
4 5 (31.25%) .NET Developer
4 5 (31.25%) C# .NET Developer
5 3 (18.75%) .NET Software Developer
5 3 (18.75%) ASP.NET MVC Developer
5 3 (18.75%) C# Software Developer
5 3 (18.75%) Software Developer
6 2 (12.50%) ASP.NET Developer
6 2 (12.50%) C# ASP.NET Developer
7 1 (6.25%) SQL Developer
Libraries, Frameworks & Software Standards
1 15 (93.75%) HTML
2 14 (87.50%) .NET
2 14 (87.50%) CSS
3 12 (75.00%) HTML5
4 9 (56.25%) AngularJS
4 9 (56.25%) WPF
5 7 (43.75%) Angular 2
6 5 (31.25%) jQuery
7 3 (18.75%) ASP.NET Web API
7 3 (18.75%) ASP.NET Web Forms
7 3 (18.75%) Sass
8 2 (12.50%) ASP.NET
8 2 (12.50%) ASP.NET MVC
8 2 (12.50%) React
8 2 (12.50%) WCF
8 2 (12.50%) XML
Processes & Methodologies
1 11 (68.75%) SOLID
2 10 (62.50%) Agile Software Development
3 9 (56.25%) Line Management
3 9 (56.25%) Mentoring
3 9 (56.25%) Microservices
4 5 (31.25%) MVC
5 3 (18.75%) BDD
5 3 (18.75%) Dependency Injection
5 3 (18.75%) OOA/OOD
5 3 (18.75%) Responsive Web Design
5 3 (18.75%) Unit Testing
6 2 (12.50%) Continuous Delivery
6 2 (12.50%) Continuous Integration
6 2 (12.50%) Front End Development
6 2 (12.50%) OO
6 2 (12.50%) Scrum
6 2 (12.50%) SDLC
6 2 (12.50%) SOA
Programming Languages
1 16 (100.00%) C#
2 3 (18.75%) SQL
2 3 (18.75%) TypeScript
3 2 (12.50%) JavaScript
3 2 (12.50%) PowerShell
3 2 (12.50%) T-SQL
4 1 (6.25%) VB.NET