Period
to 19 November 2017

The following table provides summary statistics for contract job vacancies advertised in Staffordshire with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 19 November 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 > Staffordshire
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 24 32 29
Rank change year-on-year +8 -3 +3
Contract jobs citing TDD 11 13 12
As % of all contract IT jobs advertised in Staffordshire 4.31% 3.07% 3.95%
As % of the Processes & Methodologies category 5.26% 3.71% 4.78%
Number of daily rates quoted 2 8 9
Staffordshire median daily rate £368 £350 £338
Median daily rate % change year-on-year +5.00% +3.70% +5.47%
10th Percentile £342 £285 £290
90th Percentile £387 £413 £404
West Midlands median daily rate £400 £401 £375
% change year-on-year -0.12% +6.80% -
Number of hourly rates quoted 0 0 0
Staffordshire median hourly rate - - -
West Midlands median hourly rate £33.00 - -

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Staffordshire with a requirement for process or methodology skills.

All Process and Methodology Skills
Staffordshire
Contract vacancies with a requirement for process or methodology skills 209 350 251
As % of all contract IT jobs advertised in Staffordshire 81.96% 82.74% 82.57%
Number of daily rates quoted 141 224 162
Staffordshire median daily rate £365 £350 £363
Median daily rate % change year-on-year +4.29% -3.45% +11.54%
10th Percentile £250 £204 £263
90th Percentile £475 £500 £438
West Midlands median daily rate £400 £400 £375
% change year-on-year - +6.67% +6.99%
Number of hourly rates quoted 9 10 14
Staffordshire median hourly rate £14.50 £25.00 £14.70
Median hourly rate % change year-on-year -42.00% +70.07% +17.60%
10th Percentile £12.22 £23.55 £8.94
90th Percentile £48.00 £46.60 £20.00
West Midlands median hourly rate £25.00 £17.75 £20.00
% change year-on-year +40.85% -11.25% -

TDD
Job Vacancy Trend in Staffordshire

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

Job vacancy trend for TDD in Staffordshire

TDD
Contractor Daily Rate Trend in Staffordshire

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

Contractor daily rate trend for TDD in Staffordshire

TDD
Contract Job Locations in Staffordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Staffordshire region over the 6 months to 19 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Stoke-on-Trent +9 9 - -
TDD
West Midlands

For the 6 months to 19 November 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 Staffordshire region with a requirement for TDD.

1 10 (90.91%) MVC
1 10 (90.91%) .NET
1 10 (90.91%) C#
1 10 (90.91%) HTML
1 10 (90.91%) SQL Server
1 10 (90.91%) CSS
1 10 (90.91%) BDD
1 10 (90.91%) SpecFlow
1 10 (90.91%) TypeScript
2 9 (81.82%) Dependency Injection
3 7 (63.64%) Unit Testing
3 7 (63.64%) ASP.NET Web Forms
4 6 (54.55%) jQuery
4 6 (54.55%) Responsive Web Design
4 6 (54.55%) Sass
4 6 (54.55%) HTML5
5 5 (45.45%) Web Development
5 5 (45.45%) OOA/OOD
6 4 (36.36%) Internet
6 4 (36.36%) .NET Framework
6 4 (36.36%) Castle Windsor
6 4 (36.36%) Continuous Integration
7 3 (27.27%) SQL
7 3 (27.27%) VB.NET
8 2 (18.18%) Front End Development
9 1 (9.09%) Agile Software Development
9 1 (9.09%) NUnit
9 1 (9.09%) Kanban
9 1 (9.09%) Test Automation
9 1 (9.09%) PHP

TDD
Co-occurring IT Skills in Staffordshire 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:

Communications & Networking
1 4 (36.36%) Internet
Database & Business Intelligence
1 10 (90.91%) SQL Server
2 1 (9.09%) MySQL
Development Applications
1 10 (90.91%) SpecFlow
2 1 (9.09%) NUnit
Job Titles
1 11 (100.00%) Developer
2 9 (81.82%) C# Developer
3 7 (63.64%) C# Software Developer
3 7 (63.64%) Software Developer
4 4 (36.36%) .NET Developer
5 3 (27.27%) .NET Software Developer
5 3 (27.27%) ASP.NET MVC Developer
5 3 (27.27%) C# .NET Developer
5 3 (27.27%) C# Web Developer
5 3 (27.27%) SQL Developer
5 3 (27.27%) Web Developer
6 2 (18.18%) HTML CSS Developer
6 2 (18.18%) HTML Developer
7 1 (9.09%) PHP Developer
Libraries, Frameworks & Software Standards
1 10 (90.91%) .NET
1 10 (90.91%) CSS
1 10 (90.91%) HTML
2 7 (63.64%) ASP.NET Web Forms
3 6 (54.55%) HTML5
3 6 (54.55%) jQuery
3 6 (54.55%) Sass
4 4 (36.36%) .NET Framework
4 4 (36.36%) Castle Windsor
5 1 (9.09%) AngularJS
5 1 (9.09%) LAMP
Miscellaneous
1 1 (9.09%) Greenfield Project
Processes & Methodologies
1 10 (90.91%) BDD
1 10 (90.91%) MVC
2 9 (81.82%) Dependency Injection
3 7 (63.64%) Unit Testing
4 6 (54.55%) Responsive Web Design
5 5 (45.45%) OOA/OOD
5 5 (45.45%) Web Development
6 4 (36.36%) Continuous Integration
7 2 (18.18%) Front End Development
8 1 (9.09%) Agile Software Development
8 1 (9.09%) Kanban
8 1 (9.09%) OO
8 1 (9.09%) Scrum
8 1 (9.09%) SDLC
8 1 (9.09%) Test Automation
Programming Languages
1 10 (90.91%) C#
1 10 (90.91%) TypeScript
2 3 (27.27%) SQL
2 3 (27.27%) VB.NET
3 1 (9.09%) PHP
3 1 (9.09%) PHP 7
Vendors
1 1 (9.09%) Oracle