The following table provides summary statistics for contract job vacancies advertised in South Wales 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 28 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)
Wales / South Wales
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 40 19 17
Rank change year-on-year -21 -2  
Contract jobs citing TDD 15 37 63
As % of all contract IT jobs advertised in South Wales 2.82% 7.82% 10.94%
As % of the Processes & Methodologies category 3.27% 9.89% 13.02%
Number of daily rates quoted 11 33 54
Median daily rate £388 £400 £400
Median daily rate % change year-on-year -3.12% -  
90% offered a daily rate of more than £350 £290 £333
10% offered a daily rate of more than £525 £500 £450
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 South Wales with a requirement for process and methodology skills.

Contract Process & Methodology Skills
South Wales
Contract job vacancies with a requirement for process and methodology skills 459 374 484
As % of all contract IT job vacancies advertised in South Wales 86.44% 79.07% 84.03%
Number of daily rates quoted 324 267 373
Median daily rate £375 £390 £350
Median daily rate % change year-on-year -3.84% +11.42%  
90% offered a daily rate of more than £280 £275 £265
10% offered a daily rate of more than £525 £500 £450
UK excluding London median daily rate £415 £400 £385
% change year-on-year +3.75% +3.89%  
Number of hourly rates quoted 34 17 18
Median hourly rate £36.50 £35.00 £15.25
Median hourly rate % change year-on-year +4.28% +129.50%  
90% offered a hourly rate of more than £13.00 £12.70 £11.30
10% offered a hourly rate of more than £57.50 £72.50 £16.94
UK excluding London median hourly rate £34.75 £28.50 £30.00
% change year-on-year +21.92% -5.00%  

TDD
Job Vacancy Trend in South Wales

The job posting trend of jobs advertised in South Wales 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 South Wales

TDD
Contractor Daily Rate Trend in South Wales

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

Contractor daily rate trend for TDD in South Wales

TDD
Contractor Daily Rate Histogram in South Wales

The daily rate distribution of IT jobs citing TDD in South Wales over the 3 months to 28 June 2017.

Contractor daily rate histogram for TDD in South Wales

TDD
Contractor Hourly Rate Trend in South Wales

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

Contractor hourly rate trend for TDD in South Wales

TDD
Contract Job Locations in South Wales

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the South Wales region over the 3 months to 28 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Cardiff -18 8 £363 -7.93% 1
Newport +3 6 £525 +5.00% 1
TDD
Wales

For the 6 months to 28 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 South Wales region with a requirement for TDD.

1 32 (82.05%) Agile Software Development
2 23 (58.97%) BDD
3 17 (43.59%) Java
4 14 (35.90%) Scrum
5 13 (33.33%) JavaScript
6 10 (25.64%) HTML
6 10 (25.64%) CSS
6 10 (25.64%) Python
6 10 (25.64%) RESTful
6 10 (25.64%) AngularJS
7 8 (20.51%) Test Automation
7 8 (20.51%) Kanban
7 8 (20.51%) NoSQL
7 8 (20.51%) OO
8 7 (17.95%) HTML5
8 7 (17.95%) Jenkins
9 6 (15.38%) CSS3
9 6 (15.38%) DevOps
9 6 (15.38%) Analytical Skills
9 6 (15.38%) Hadoop
9 6 (15.38%) Software Engineering
10 5 (12.82%) PHP
10 5 (12.82%) Oracle
10 5 (12.82%) Continuous Integration
10 5 (12.82%) Open Source
10 5 (12.82%) Unit Testing
10 5 (12.82%) Apache Spark
10 5 (12.82%) Front End Development
10 5 (12.82%) Big Data
10 5 (12.82%) Greenfield Project

TDD
Co-occurring IT Skills in South Wales 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 5 (12.82%) Apache Spark
2 4 (10.26%) Elasticsearch
3 1 (2.56%) Apache
3 1 (2.56%) Apache Airflow
3 1 (2.56%) Confluence
Applications
1 1 (2.56%) Photoshop
Cloud Services
1 3 (7.69%) GitHub
1 3 (7.69%) PaaS
2 2 (5.13%) Amazon AWS
3 1 (2.56%) Microsoft Azure
Database & Business Intelligence
1 8 (20.51%) NoSQL
2 6 (15.38%) Hadoop
3 5 (12.82%) Big Data
4 4 (10.26%) MongoDB
4 4 (10.26%) Relational Database
5 3 (7.69%) Apache Cassandra
5 3 (7.69%) MySQL
6 1 (2.56%) Apache Hive
6 1 (2.56%) Couchbase
6 1 (2.56%) HBase
6 1 (2.56%) Oracle Database
6 1 (2.56%) SQL Server
6 1 (2.56%) SQL Server 2008
6 1 (2.56%) SQL Server 2012
Development Applications
1 7 (17.95%) Jenkins
2 3 (7.69%) Cucumber
2 3 (7.69%) Git (software)
3 2 (5.13%) Jasmine
3 2 (5.13%) Selenium
4 1 (2.56%) Atlassian Bamboo
4 1 (2.56%) Babel
4 1 (2.56%) gulp
4 1 (2.56%) MbUnit
4 1 (2.56%) Mercurial
4 1 (2.56%) Mocha
4 1 (2.56%) MSTest
4 1 (2.56%) NUnit
4 1 (2.56%) Protractor
4 1 (2.56%) SpecFlow
4 1 (2.56%) TeamCity
4 1 (2.56%) Visual Studio
4 1 (2.56%) WebDriver
4 1 (2.56%) webpack
4 1 (2.56%) Xcode
General
1 2 (5.13%) Banking
2 1 (2.56%) Finance
2 1 (2.56%) Investment Banking
2 1 (2.56%) Legal
2 1 (2.56%) Marketing
Job Titles
1 27 (69.23%) Developer
2 7 (17.95%) Java Developer
3 5 (12.82%) Front End Developer (Client-Side Developer)
3 5 (12.82%) Java Engineer
3 5 (12.82%) Senior Developer
4 4 (10.26%) PHP Developer
4 4 (10.26%) Scala Developer
5 3 (7.69%) Agile Developer
5 3 (7.69%) Agile Java Developer
5 3 (7.69%) Architect
5 3 (7.69%) Java Software Engineer
5 3 (7.69%) Senior Java Developer
5 3 (7.69%) Software Engineer
5 3 (7.69%) Technical Architect
6 2 (5.13%) .NET Developer
6 2 (5.13%) Java Architect
6 2 (5.13%) Java Technical Architect
6 2 (5.13%) PHP Zend Developer
6 2 (5.13%) Python Developer
6 2 (5.13%) Senior Front-End Developer
Libraries, Frameworks & Software Standards
1 10 (25.64%) AngularJS
1 10 (25.64%) CSS
1 10 (25.64%) HTML
1 10 (25.64%) RESTful
2 7 (17.95%) HTML5
3 6 (15.38%) CSS3
4 4 (10.26%) Kafka
4 4 (10.26%) Node.js
4 4 (10.26%) REST
4 4 (10.26%) Web Services
5 3 (7.69%) Gherkin
5 3 (7.69%) JSON
5 3 (7.69%) KnockoutJS
5 3 (7.69%) RabbitMQ
5 3 (7.69%) React
5 3 (7.69%) Swagger
6 2 (5.13%) .NET
6 2 (5.13%) jQuery
6 2 (5.13%) Sass
6 2 (5.13%) Symfony
Miscellaneous
1 6 (15.38%) Analytical Skills
2 5 (12.82%) Greenfield Project
3 4 (10.26%) Algorithms
4 1 (2.56%) Computer Science
4 1 (2.56%) Cyberthreat
4 1 (2.56%) Enterprise Software
4 1 (2.56%) User Experience
4 1 (2.56%) W3C
Operating Systems
1 1 (2.56%) Android
1 1 (2.56%) Apple iOS
1 1 (2.56%) Linux
Processes & Methodologies
1 32 (82.05%) Agile Software Development
2 23 (58.97%) BDD
3 14 (35.90%) Scrum
4 8 (20.51%) Kanban
4 8 (20.51%) OO
4 8 (20.51%) Test Automation
5 6 (15.38%) DevOps
5 6 (15.38%) Software Engineering
6 5 (12.82%) Continuous Integration
6 5 (12.82%) Front End Development
6 5 (12.82%) Open Source
6 5 (12.82%) Unit Testing
7 4 (10.26%) Analytics
7 4 (10.26%) Business Analytics
7 4 (10.26%) Business Intelligence
7 4 (10.26%) Mentoring
7 4 (10.26%) Microservices
7 4 (10.26%) Mobile First
8 3 (7.69%) Event-Driven Architecture
8 3 (7.69%) High Availability
Programming Languages
1 17 (43.59%) Java
2 13 (33.33%) JavaScript
3 10 (25.64%) Python
4 5 (12.82%) PHP
5 3 (7.69%) SQL
6 2 (5.13%) Scala
7 1 (2.56%) Apple Swift
7 1 (2.56%) C#
7 1 (2.56%) Objective-C
7 1 (2.56%) TypeScript
Qualifications
1 1 (2.56%) SC Cleared
1 1 (2.56%) Security Cleared
Quality Assurance & Compliance
1 1 (2.56%) QA
1 1 (2.56%) WAI
1 1 (2.56%) WCAG
System Software
1 1 (2.56%) Docker
Vendors
1 5 (12.82%) Oracle
2 4 (10.26%) Cloudera
2 4 (10.26%) SAP
2 4 (10.26%) Teradata
3 2 (5.13%) Zend
4 1 (2.56%) Apple
4 1 (2.56%) CA Agile Central