The following table provides summary statistics for contract job vacancies advertised in Crawley 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 April 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 Sussex / Crawley
3 months to
29 Apr 2017
Same period 2016 Same period 2015
Rank 28 16 20
Rank change year-on-year -12 +4  
Contract jobs citing TDD 1 18 2
As % of all contract IT jobs advertised in Crawley 0.71% 8.04% 1.45%
As % of the Processes & Methodologies category 0.82% 9.00% 1.71%
Number of daily rates quoted 1 12 2
Median daily rate £350 £388 £345
Median daily rate % change year-on-year -9.67% +12.31%  
UK excluding London median daily rate £400 £400 £380
% change year-on-year - +5.26%  
Number of hourly rates quoted 0 2 0
Median hourly rate - £45.75 -
UK excluding London median hourly rate £41.50 £42.75 £42.50
% change year-on-year -2.92% +0.58%  

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 Crawley with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Crawley
Contract job vacancies with a requirement for process and methodology skills 122 200 117
As % of all contract IT job vacancies advertised in Crawley 87.14% 89.29% 84.78%
Number of daily rates quoted 83 151 81
Median daily rate £400 £425 £375
Median daily rate % change year-on-year -5.88% +13.33%  
90% offered a daily rate of more than £300 £308 £300
10% offered a daily rate of more than £500 £510 £550
UK excluding London median daily rate £415 £400 £390
% change year-on-year +3.75% +2.56%  
Number of hourly rates quoted 1 2 1
Median hourly rate £52.50 £43.00 £15.50
Median hourly rate % change year-on-year +22.09% +177.41%  
UK excluding London median hourly rate £37.00 £36.00 £30.50
% change year-on-year +2.77% +18.03%  

TDD
Job Vacancy Trend in Crawley

The job posting trend of jobs advertised in Crawley 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 Crawley

TDD
Contractor Daily Rate Trend in Crawley

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

Contractor daily rate trend for TDD in Crawley

TDD
Contractor Hourly Rate Trend in Crawley

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

Contractor hourly rate trend for TDD in Crawley

For the 6 months to 29 April 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 Crawley region with a requirement for TDD.

1 6 (100.00%) Agile Software Development
2 5 (83.33%) Continuous Integration
3 3 (50.00%) Microsoft
3 3 (50.00%) Security Cleared
3 3 (50.00%) Stakeholder Engagement
3 3 (50.00%) DevOps
4 2 (33.33%) Coaching
4 2 (33.33%) Continuous Improvement
4 2 (33.33%) Test Automation
4 2 (33.33%) Project Management
4 2 (33.33%) Kanban
4 2 (33.33%) Scrum
4 2 (33.33%) Pair Programming
5 1 (16.67%) Ruby
5 1 (16.67%) Degree
5 1 (16.67%) Physics
5 1 (16.67%) Computer Science
5 1 (16.67%) WCF
5 1 (16.67%) MVC
5 1 (16.67%) C#
5 1 (16.67%) .NET
5 1 (16.67%) SQL Server
5 1 (16.67%) ASP.NET
5 1 (16.67%) OO
5 1 (16.67%) RESTful
5 1 (16.67%) ASP.NET MVC
5 1 (16.67%) Git (software)
5 1 (16.67%) BDD
5 1 (16.67%) NoSQL
5 1 (16.67%) Node.js

TDD
Co-occurring IT Skills in Crawley 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 (16.67%) NoSQL
1 1 (16.67%) SQL Server
1 1 (16.67%) SQL Server 2014
Development Applications
1 1 (16.67%) Git (software)
Job Titles
1 3 (50.00%) Consultant
1 3 (50.00%) DevOps Consultant
2 2 (33.33%) Agile Coach
3 1 (16.67%) .NET Developer
3 1 (16.67%) Developer
Libraries, Frameworks & Software Standards
1 1 (16.67%) .NET
1 1 (16.67%) ASP.NET
1 1 (16.67%) ASP.NET MVC
1 1 (16.67%) ASP.NET MVC 5
1 1 (16.67%) ASP.NET Web API
1 1 (16.67%) Node.js
1 1 (16.67%) RESTful
1 1 (16.67%) WCF
Miscellaneous
1 1 (16.67%) Computer Science
1 1 (16.67%) Greenfield Project
Processes & Methodologies
1 6 (100.00%) Agile Software Development
2 5 (83.33%) Continuous Integration
3 3 (50.00%) DevOps
3 3 (50.00%) Stakeholder Engagement
4 2 (33.33%) Coaching
4 2 (33.33%) Continuous Improvement
4 2 (33.33%) Kanban
4 2 (33.33%) Pair Programming
4 2 (33.33%) Project Management
4 2 (33.33%) Scrum
4 2 (33.33%) Test Automation
5 1 (16.67%) BDD
5 1 (16.67%) MVC
5 1 (16.67%) OO
5 1 (16.67%) Physics
5 1 (16.67%) Web Application Development
Programming Languages
1 1 (16.67%) C#
1 1 (16.67%) Ruby
Qualifications
1 3 (50.00%) Security Cleared
2 1 (16.67%) Degree
Vendors
1 3 (50.00%) Microsoft