The following table provides summary statistics for contract job vacancies advertised in Portsmouth 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 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)
Hampshire / Portsmouth
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 32 28 -
Rank change year-on-year -4 -  
Contract jobs citing TDD 1 1 0
As % of all contract IT jobs advertised in Portsmouth 0.61% 0.68% -
As % of the Processes & Methodologies category 0.73% 0.88% -
Number of daily rates quoted 1 1 0
Median daily rate £275 £350 -
Median daily rate % change year-on-year -21.42% -  
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 Portsmouth with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Portsmouth
Contract job vacancies with a requirement for process and methodology skills 137 113 75
As % of all contract IT job vacancies advertised in Portsmouth 83.03% 76.35% 83.33%
Number of daily rates quoted 266 288 206
Median daily rate £425 £463 £350
Median daily rate % change year-on-year -8.10% +32.14%  
90% offered a daily rate of more than £263 £281 £275
10% offered a daily rate of more than £600 £1,000 £443
UK excluding London median daily rate £415 £400 £380
% change year-on-year +3.75% +5.26%  
Number of hourly rates quoted 82 74 34
Median hourly rate £45.00 £45.00 £42.25
Median hourly rate % change year-on-year - +6.50%  
90% offered a hourly rate of more than £41.25 £29.48 £13.13
10% offered a hourly rate of more than £61.69 £53.75 £47.83
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 Portsmouth

Job postings citing TDD as a percentage of all IT jobs advertised in Portsmouth.

Job vacancy trend for TDD in Portsmouth

TDD
Contractor Daily Rate Trend in Portsmouth

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

Contractor daily rate trend for TDD in Portsmouth

TDD
Contractor Hourly Rate Trend in Portsmouth

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Portsmouth.

Contractor hourly rate trend for TDD in Portsmouth

For the 6 months to 28 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 Portsmouth region with a requirement for TDD.

1 2 (100.00%) MVC
1 2 (100.00%) JavaScript
2 1 (50.00%) PHP
2 1 (50.00%) .NET
2 1 (50.00%) MySQL
2 1 (50.00%) SQL Server
2 1 (50.00%) Visual Studio
2 1 (50.00%) ASP.NET
2 1 (50.00%) CSS
2 1 (50.00%) SOAP
2 1 (50.00%) Web Services
2 1 (50.00%) OOA/OOD
2 1 (50.00%) Microsoft
2 1 (50.00%) Configuration Management
2 1 (50.00%) C#
2 1 (50.00%) HTML
2 1 (50.00%) Scrum
2 1 (50.00%) WinForms
2 1 (50.00%) Agile Software Development
2 1 (50.00%) WCF
2 1 (50.00%) WPF
2 1 (50.00%) jQuery
2 1 (50.00%) Unit Testing
2 1 (50.00%) Continuous Integration
2 1 (50.00%) Team Foundation Server
2 1 (50.00%) RESTful
2 1 (50.00%) ASP.NET MVC
2 1 (50.00%) PHPUnit
2 1 (50.00%) REST
2 1 (50.00%) Laravel

TDD
Co-occurring IT Skills in Portsmouth 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 (50.00%) MySQL
1 1 (50.00%) SQL Server
Development Applications
1 1 (50.00%) PHPUnit
1 1 (50.00%) Team Foundation Server
1 1 (50.00%) Visual Studio
Job Titles
1 2 (100.00%) Developer
2 1 (50.00%) .NET Developer
2 1 (50.00%) ASP.NET Developer
2 1 (50.00%) ASP.NET MVC Developer
2 1 (50.00%) C# .NET Developer
2 1 (50.00%) C# ASP.NET Developer
2 1 (50.00%) C# Developer
2 1 (50.00%) C# WPF Developer
2 1 (50.00%) PHP Developer
2 1 (50.00%) PHP Laravel Developer
2 1 (50.00%) WPF Developer
Libraries, Frameworks & Software Standards
1 1 (50.00%) .NET
1 1 (50.00%) AngularJS
1 1 (50.00%) ASP.NET
1 1 (50.00%) ASP.NET MVC
1 1 (50.00%) ASP.NET Web API
1 1 (50.00%) CSS
1 1 (50.00%) HTML
1 1 (50.00%) jQuery
1 1 (50.00%) Laravel
1 1 (50.00%) REST
1 1 (50.00%) RESTful
1 1 (50.00%) SOAP
1 1 (50.00%) WCF
1 1 (50.00%) Web Services
1 1 (50.00%) WinForms
1 1 (50.00%) WPF
Miscellaneous
1 1 (50.00%) Mobile App
1 1 (50.00%) User Experience
Processes & Methodologies
1 2 (100.00%) MVC
2 1 (50.00%) Agile Software Development
2 1 (50.00%) Configuration Management
2 1 (50.00%) Continuous Integration
2 1 (50.00%) Mobile Application Development
2 1 (50.00%) OOA/OOD
2 1 (50.00%) Scrum
2 1 (50.00%) Unit Testing
Programming Languages
1 2 (100.00%) JavaScript
2 1 (50.00%) C#
2 1 (50.00%) PHP
Vendors
1 1 (50.00%) Microsoft