The following table provides summary statistics for contract job vacancies advertised in Bradford 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 24 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 Yorkshire / Bradford
3 months to
24 Apr 2017
Same period 2016 Same period 2015
Rank 17 9 40
Rank change year-on-year -8 +31  
Contract jobs citing TDD 6 17 3
As % of all contract IT jobs advertised in Bradford 4.96% 12.59% 1.15%
As % of the Processes & Methodologies category 5.66% 15.74% 1.30%
Number of daily rates quoted 3 14 3
Median daily rate £575 £450 £350
Median daily rate % change year-on-year +27.77% +28.57%  
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 £39.25 £44.00 £39.25
% change year-on-year -10.79% +12.10%  

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 Bradford with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Bradford
Contract job vacancies with a requirement for process and methodology skills 106 108 231
As % of all contract IT job vacancies advertised in Bradford 87.60% 80.00% 88.85%
Number of daily rates quoted 53 76 103
Median daily rate £450 £400 £350
Median daily rate % change year-on-year +12.50% +14.28%  
90% offered a daily rate of more than £300 £275 £250
10% offered a daily rate of more than £580 £475 £450
UK excluding London median daily rate £413 £400 £393
% change year-on-year +3.12% +1.91%  
Number of hourly rates quoted 3 4 11
Median hourly rate £27.31 £23.00 £16.72
Median hourly rate % change year-on-year +18.73% +37.55%  
90% offered a hourly rate of more than £12.50 £18.65 £10.05
10% offered a hourly rate of more than £34.24 £35.00 £17.42
UK excluding London median hourly rate £36.00 £37.50 £30.35
% change year-on-year -4.00% +23.55%  

TDD
Job Vacancy Trend in Bradford

The job posting trend of jobs advertised in Bradford 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 Bradford

TDD
Contractor Daily Rate Trend in Bradford

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

Contractor daily rate trend for TDD in Bradford

For the 6 months to 24 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 Bradford region with a requirement for TDD.

1 7 (100.00%) Java
1 7 (100.00%) Agile Software Development
1 7 (100.00%) RESTful
2 6 (85.71%) JSON
2 6 (85.71%) JIRA
2 6 (85.71%) Kanban
2 6 (85.71%) NoSQL
2 6 (85.71%) Open Source
2 6 (85.71%) BDD
2 6 (85.71%) Jenkins
2 6 (85.71%) Retail
2 6 (85.71%) Scrum
2 6 (85.71%) Continuous Delivery
2 6 (85.71%) Translating Business Requirements
2 6 (85.71%) Docker
2 6 (85.71%) Microservices
2 6 (85.71%) Greenfield Project
3 1 (14.29%) Hibernate
3 1 (14.29%) Spring
3 1 (14.29%) JavaScript
3 1 (14.29%) SQL Server
3 1 (14.29%) CSS
3 1 (14.29%) Struts
3 1 (14.29%) Web Services
3 1 (14.29%) Windows
3 1 (14.29%) ECMAScript
3 1 (14.29%) CouchDB
3 1 (14.29%) JPA
3 1 (14.29%) Mobile App
3 1 (14.29%) MongoDB

TDD
Co-occurring IT Skills in Bradford 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 6 (85.71%) NoSQL
2 1 (14.29%) CouchDB
2 1 (14.29%) MongoDB
2 1 (14.29%) SQL Server
Development Applications
1 6 (85.71%) Jenkins
1 6 (85.71%) JIRA
General
1 6 (85.71%) Retail
Job Titles
1 6 (85.71%) Architect
2 5 (71.43%) Java Architect
3 4 (57.14%) Java Technical Architect
3 4 (57.14%) Technical Architect
4 1 (14.29%) Agile Developer
4 1 (14.29%) Agile Java Developer
4 1 (14.29%) Developer
4 1 (14.29%) Java Developer
4 1 (14.29%) Solutions Architect
Libraries, Frameworks & Software Standards
1 7 (100.00%) RESTful
2 6 (85.71%) JSON
3 1 (14.29%) AngularJS
3 1 (14.29%) CSS
3 1 (14.29%) Ember.js
3 1 (14.29%) Hibernate
3 1 (14.29%) JPA
3 1 (14.29%) LESS
3 1 (14.29%) Node.js
3 1 (14.29%) RabbitMQ
3 1 (14.29%) React
3 1 (14.29%) Spring
3 1 (14.29%) Struts
3 1 (14.29%) Web Services
Miscellaneous
1 6 (85.71%) Greenfield Project
2 1 (14.29%) Mobile App
Operating Systems
1 1 (14.29%) Windows
Processes & Methodologies
1 7 (100.00%) Agile Software Development
2 6 (85.71%) BDD
2 6 (85.71%) Continuous Delivery
2 6 (85.71%) Kanban
2 6 (85.71%) Microservices
2 6 (85.71%) Open Source
2 6 (85.71%) Scrum
2 6 (85.71%) Translating Business Requirements
Programming Languages
1 7 (100.00%) Java
2 1 (14.29%) ECMAScript
2 1 (14.29%) ES6
2 1 (14.29%) JavaScript
System Software
1 6 (85.71%) Docker