The following table provides summary statistics for contract job vacancies advertised in Swindon 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 25 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)
Wiltshire / Swindon
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 27 40 33
Rank change year-on-year +13 -7  
Contract jobs citing TDD 15 4 8
As % of all contract IT jobs advertised in Swindon 4.50% 1.18% 2.20%
As % of the Processes & Methodologies category 5.26% 1.59% 2.75%
Number of daily rates quoted 14 3 8
Median daily rate £394 £320 £356
Median daily rate % change year-on-year +23.04% -10.17%  
90% offered a daily rate of more than £350 £244 £325
10% offered a daily rate of more than £424 £444 £416
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 Swindon with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Swindon
Contract job vacancies with a requirement for process and methodology skills 285 252 291
As % of all contract IT job vacancies advertised in Swindon 85.59% 74.34% 79.95%
Number of daily rates quoted 179 175 224
Median daily rate £400 £400 £412
Median daily rate % change year-on-year - -2.79%  
90% offered a daily rate of more than £323 £300 £325
10% offered a daily rate of more than £550 £563 £561
UK excluding London median daily rate £415 £400 £380
% change year-on-year +3.75% +5.26%  
Number of hourly rates quoted 1 3 15
Median hourly rate £13.86 £38.50 £16.00
Median hourly rate % change year-on-year -64.00% +140.62%  
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 Swindon

The job posting trend of jobs advertised in Swindon 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 Swindon

TDD
Contractor Daily Rate Trend in Swindon

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

Contractor daily rate trend for TDD in Swindon

For the 6 months to 25 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 Swindon region with a requirement for TDD.

1 26 (89.66%) BDD
2 24 (82.76%) JavaScript
3 22 (75.86%) Agile Software Development
3 22 (75.86%) Cucumber
4 19 (65.52%) MVC
5 18 (62.07%) Scrum
5 18 (62.07%) Selenium
5 18 (62.07%) AngularJS
6 17 (58.62%) CSS
6 17 (58.62%) HTML
7 15 (51.72%) MVVM
7 15 (51.72%) Ext JS
7 15 (51.72%) Sencha
7 15 (51.72%) Gherkin
7 15 (51.72%) Jasmine
8 13 (44.83%) HTML5
8 13 (44.83%) jQuery
9 10 (34.48%) .NET
9 10 (34.48%) C#
9 10 (34.48%) SpecFlow
9 10 (34.48%) Twitter Bootstrap
10 8 (27.59%) Java
10 8 (27.59%) Finance
11 7 (24.14%) OO
12 6 (20.69%) Spring
12 6 (20.69%) Kanban
13 5 (17.24%) Continuous Integration
13 5 (17.24%) Git (software)
13 5 (17.24%) CSS3
13 5 (17.24%) REST

TDD
Co-occurring IT Skills in Swindon 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:

Application Platforms
1 2 (6.90%) Apache
2 1 (3.45%) Liferay
2 1 (3.45%) Tomcat
Cloud Services
1 2 (6.90%) Amazon AWS
2 1 (3.45%) GitHub
Communications & Networking
1 2 (6.90%) LDAP
Database & Business Intelligence
1 1 (3.45%) Hadoop
Development Applications
1 22 (75.86%) Cucumber
2 18 (62.07%) Selenium
3 15 (51.72%) Jasmine
4 10 (34.48%) SpecFlow
5 5 (17.24%) Git (software)
6 4 (13.79%) Bitbucket
6 4 (13.79%) Jenkins
7 3 (10.34%) Mockito
8 2 (6.90%) Maven
8 2 (6.90%) SoapUI
8 2 (6.90%) WebDriver
9 1 (3.45%) Ant
9 1 (3.45%) Atlassian Bamboo
9 1 (3.45%) GitLab
9 1 (3.45%) JIRA
9 1 (3.45%) JMeter
9 1 (3.45%) JUnit
9 1 (3.45%) Robot Framework
General
1 8 (27.59%) Finance
2 2 (6.90%) Banking
Job Titles
1 24 (82.76%) Developer
2 9 (31.03%) UI Developer
3 6 (20.69%) Web Developer
4 5 (17.24%) Java Developer
5 4 (13.79%) JavaScript Developer
5 4 (13.79%) Sencha Developer
5 4 (13.79%) Web UI Developer
6 1 (3.45%) Automation Test Analyst
6 1 (3.45%) Automation Test Lead
6 1 (3.45%) Front End Developer (Client-Side Developer)
6 1 (3.45%) Full Stack Developer
6 1 (3.45%) iOS Developer
6 1 (3.45%) Java Applications Developer
6 1 (3.45%) Java Web Applications Developer
6 1 (3.45%) Lead Java Developer
6 1 (3.45%) QA Engineer
6 1 (3.45%) Senior Full Stack Developer
6 1 (3.45%) Senior QA Engineer
6 1 (3.45%) Test Leader
6 1 (3.45%) Web Applications Developer
Libraries, Frameworks & Software Standards
1 18 (62.07%) AngularJS
2 17 (58.62%) CSS
2 17 (58.62%) HTML
3 15 (51.72%) Ext JS
3 15 (51.72%) Gherkin
4 13 (44.83%) HTML5
4 13 (44.83%) jQuery
5 10 (34.48%) .NET
5 10 (34.48%) Twitter Bootstrap
6 6 (20.69%) Spring
7 5 (17.24%) .NET Framework
7 5 (17.24%) CSS3
7 5 (17.24%) REST
7 5 (17.24%) Sass
7 5 (17.24%) SOAP
7 5 (17.24%) Web Services
8 4 (13.79%) Hibernate
8 4 (13.79%) Spring MVC
9 3 (10.34%) React
10 2 (6.90%) LESS
Miscellaneous
1 1 (3.45%) Greenfield Project
1 1 (3.45%) Linux Command Line
Operating Systems
1 2 (6.90%) Linux
2 1 (3.45%) Apple iOS
2 1 (3.45%) Unix
2 1 (3.45%) Windows
Processes & Methodologies
1 26 (89.66%) BDD
2 22 (75.86%) Agile Software Development
3 19 (65.52%) MVC
4 18 (62.07%) Scrum
5 15 (51.72%) MVVM
6 7 (24.14%) OO
7 6 (20.69%) Kanban
8 5 (17.24%) Continuous Integration
9 4 (13.79%) Test Automation
10 3 (10.34%) Continuous Improvement
10 3 (10.34%) Web Development
11 2 (6.90%) DevOps
11 2 (6.90%) E-Commerce
11 2 (6.90%) Open Source
11 2 (6.90%) Regression Testing
11 2 (6.90%) SOA
11 2 (6.90%) Software Engineering
11 2 (6.90%) User Stories
12 1 (3.45%) iOS Development
12 1 (3.45%) Mobile Development
Programming Languages
1 24 (82.76%) JavaScript
2 10 (34.48%) C#
3 8 (27.59%) Java
4 2 (6.90%) Python
5 1 (3.45%) ES6
5 1 (3.45%) Objective-C
5 1 (3.45%) Shell Script
Qualifications
1 2 (6.90%) Degree
2 1 (3.45%) ISEB
2 1 (3.45%) ISTQB
2 1 (3.45%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 2 (6.90%) QA
System Software
1 1 (3.45%) Docker
1 1 (3.45%) Varnish
Vendors
1 15 (51.72%) Sencha