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 29 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)
Staffordshire / Stoke-on-Trent
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 11 - 7
Rank change year-on-year - 0  
Contract jobs citing TDD 2 0 5
As % of all contract IT jobs advertised in Stoke-on-Trent 3.70% - 15.63%
As % of the Processes & Methodologies category 5.56% - 18.52%
Number of daily rates quoted 2 0 3
Median daily rate £351 - £325
UK excluding London median daily rate £400 £400 £375
% change year-on-year - +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 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 36 49 27
As % of all contract IT job vacancies advertised in Stoke-on-Trent 66.67% 81.67% 84.38%
Number of daily rates quoted 26 25 20
Median daily rate £338 £370 £375
Median daily rate % change year-on-year -8.78% -1.33%  
90% offered a daily rate of more than £225 £300 £275
10% offered a daily rate of more than £425 £490 £475
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 0 1 1
Median hourly rate - £10.65 £17.50
Median hourly rate % change year-on-year - -39.14%  
UK excluding London median hourly rate £35.75 £38.50 £30.00
% change year-on-year -7.14% +28.33%  

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 29 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 Stoke-on-Trent region with a requirement for TDD.

1 6 (100.00%) Agile Software Development
2 5 (83.33%) HTML
2 5 (83.33%) HTML5
3 4 (66.67%) AngularJS
3 4 (66.67%) C#
3 4 (66.67%) Scrum
4 3 (50.00%) CSS
4 3 (50.00%) OO
4 3 (50.00%) JavaScript
4 3 (50.00%) .NET
4 3 (50.00%) SQL Server
4 3 (50.00%) React
4 3 (50.00%) SOLID
5 2 (33.33%) Angular 2
5 2 (33.33%) Continuous Delivery
5 2 (33.33%) SDLC
5 2 (33.33%) Jenkins
5 2 (33.33%) ASP.NET Web Forms
5 2 (33.33%) ASP.NET
5 2 (33.33%) SQL
5 2 (33.33%) T-SQL
5 2 (33.33%) SOA
5 2 (33.33%) XML
5 2 (33.33%) MVC
5 2 (33.33%) Subversion
5 2 (33.33%) jQuery
5 2 (33.33%) Continuous Integration
5 2 (33.33%) Selenium
5 2 (33.33%) WCF
5 2 (33.33%) PowerShell

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:

Cloud Services
1 1 (16.67%) SaaS
Database & Business Intelligence
1 3 (50.00%) SQL Server
2 1 (16.67%) MySQL
2 1 (16.67%) SQL Server 2008
Development Applications
1 2 (33.33%) Git (software)
1 2 (33.33%) Jenkins
1 2 (33.33%) Selenium
1 2 (33.33%) Subversion
1 2 (33.33%) TeamCity
2 1 (16.67%) Grunt
2 1 (16.67%) gulp
General
1 1 (16.67%) Games
Job Titles
1 6 (100.00%) Developer
2 4 (66.67%) C# Developer
3 2 (33.33%) .NET Developer
3 2 (33.33%) ASP.NET Developer
3 2 (33.33%) C# .NET Developer
3 2 (33.33%) C# ASP.NET Developer
4 1 (16.67%) Angular Developer
4 1 (16.67%) C# WPF Developer
4 1 (16.67%) Front End Developer (Client-Side Developer)
4 1 (16.67%) Full Stack Developer
4 1 (16.67%) UX Developer
4 1 (16.67%) WPF Developer
Libraries, Frameworks & Software Standards
1 5 (83.33%) HTML
1 5 (83.33%) HTML5
2 4 (66.67%) AngularJS
3 3 (50.00%) .NET
3 3 (50.00%) CSS
3 3 (50.00%) React
4 2 (33.33%) Angular 2
4 2 (33.33%) ASP.NET
4 2 (33.33%) ASP.NET MVC
4 2 (33.33%) ASP.NET Web Forms
4 2 (33.33%) jQuery
4 2 (33.33%) WCF
4 2 (33.33%) XML
5 1 (16.67%) CSS3
5 1 (16.67%) Node.js
5 1 (16.67%) WPF
Miscellaneous
1 1 (16.67%) User Experience
Processes & Methodologies
1 6 (100.00%) Agile Software Development
2 4 (66.67%) Scrum
3 3 (50.00%) OO
3 3 (50.00%) SOLID
4 2 (33.33%) Continuous Delivery
4 2 (33.33%) Continuous Integration
4 2 (33.33%) MVC
4 2 (33.33%) SDLC
4 2 (33.33%) SOA
5 1 (16.67%) Front End Development
5 1 (16.67%) Kanban
5 1 (16.67%) Microservices
5 1 (16.67%) Responsive Web Design
5 1 (16.67%) Software Engineering
Programming Languages
1 4 (66.67%) C#
2 3 (50.00%) JavaScript
3 2 (33.33%) PowerShell
3 2 (33.33%) SQL
3 2 (33.33%) T-SQL
4 1 (16.67%) ES6
4 1 (16.67%) Java