Period
to 21 January 2018

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 21 January 2018 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
21 Jan 2018
Same period 2017 Same period 2016
Rank 28 27 34
Rank change year-on-year -1 +7 -4
Contract jobs citing TDD 8 19 8
As % of all contract IT jobs advertised in Staffordshire 3.04% 4.87% 2.73%
As % of the Processes & Methodologies category 3.72% 6.03% 3.33%
Number of daily rates quoted 1 13 6
Staffordshire median daily rate £375 £350 £319
Median daily rate % change year-on-year +7.14% +9.80% -0.39%
10th Percentile £363 £285 £275
90th Percentile £388 £406 £416
West Midlands median daily rate £400 £400 £380
% change year-on-year - +5.26% +1.33%
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 215 315 240
As % of all contract IT jobs advertised in Staffordshire 81.75% 80.77% 81.91%
Number of daily rates quoted 148 213 169
Staffordshire median daily rate £375 £350 £370
Median daily rate % change year-on-year +7.14% -5.41% +13.85%
10th Percentile £263 £217 £263
90th Percentile £471 £488 £475
West Midlands median daily rate £400 £400 £375
% change year-on-year - +6.67% +4.17%
Number of hourly rates quoted 9 16 11
Staffordshire median hourly rate £14.50 £25.00 £12.35
Median hourly rate % change year-on-year -42.00% +102.43% -6.79%
10th Percentile £11.12 £20.75 £8.45
90th Percentile £48.00 £77.50 £20.00
West Midlands median hourly rate £24.98 £21.26 £20.00
% change year-on-year +17.50% +6.30% -11.11%

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 21 January 2018. 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 +1 7 - - 3
TDD
West Midlands

For the 6 months to 21 January 2018, 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 7 (87.50%) MVC
1 7 (87.50%) .NET
1 7 (87.50%) C#
1 7 (87.50%) HTML
1 7 (87.50%) SQL Server
1 7 (87.50%) CSS
1 7 (87.50%) Dependency Injection
1 7 (87.50%) BDD
1 7 (87.50%) SpecFlow
1 7 (87.50%) TypeScript
1 7 (87.50%) ASP.NET Web Forms
2 6 (75.00%) Web Development
3 5 (62.50%) .NET Framework
3 5 (62.50%) Continuous Integration
3 5 (62.50%) Castle Windsor
3 5 (62.50%) Internet
4 3 (37.50%) Unit Testing
5 2 (25.00%) jQuery
5 2 (25.00%) HTML5
5 2 (25.00%) Responsive Web Design
5 2 (25.00%) Sass
5 2 (25.00%) OOA/OOD
5 2 (25.00%) SQL
5 2 (25.00%) VB.NET
6 1 (12.50%) PHP
6 1 (12.50%) OO
6 1 (12.50%) LAMP
6 1 (12.50%) MySQL
6 1 (12.50%) Oracle
6 1 (12.50%) AngularJS

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 5 (62.50%) Internet
Database & Business Intelligence
1 7 (87.50%) SQL Server
2 1 (12.50%) MySQL
Development Applications
1 7 (87.50%) SpecFlow
Job Titles
1 8 (100.00%) Developer
2 7 (87.50%) C# Developer
3 5 (62.50%) C# Software Developer
3 5 (62.50%) Software Developer
4 3 (37.50%) C# Web Developer
4 3 (37.50%) Web Developer
5 2 (25.00%) SQL Developer
6 1 (12.50%) PHP Developer
Libraries, Frameworks & Software Standards
1 7 (87.50%) .NET
1 7 (87.50%) ASP.NET Web Forms
1 7 (87.50%) CSS
1 7 (87.50%) HTML
2 5 (62.50%) .NET Framework
2 5 (62.50%) Castle Windsor
3 2 (25.00%) HTML5
3 2 (25.00%) jQuery
3 2 (25.00%) Sass
4 1 (12.50%) AngularJS
4 1 (12.50%) LAMP
Processes & Methodologies
1 7 (87.50%) BDD
1 7 (87.50%) Dependency Injection
1 7 (87.50%) MVC
2 6 (75.00%) Web Development
3 5 (62.50%) Continuous Integration
4 3 (37.50%) Unit Testing
5 2 (25.00%) OOA/OOD
5 2 (25.00%) Responsive Web Design
6 1 (12.50%) OO
6 1 (12.50%) SDLC
6 1 (12.50%) Test Automation
Programming Languages
1 7 (87.50%) C#
1 7 (87.50%) TypeScript
2 2 (25.00%) SQL
2 2 (25.00%) VB.NET
3 1 (12.50%) PHP
3 1 (12.50%) PHP 7
Vendors
1 1 (12.50%) Oracle