Period
to 19 November 2017

The following table provides summary statistics for contract job vacancies advertised in 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 6 months to 19 November 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)
UK > Wales
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 53 12 21
Rank change year-on-year -41 +9 -3
Contract jobs citing TDD 37 141 136
As % of all contract IT jobs advertised in Wales 3.14% 10.04% 8.18%
As % of the Processes & Methodologies category 3.76% 11.99% 10.19%
Number of daily rates quoted 29 108 113
Wales median daily rate £425 £475 £400
Median daily rate % change year-on-year -10.53% +18.75% -3.03%
10th Percentile £325 £375 £300
90th Percentile £482 £558 £526
UK median daily rate £488 £450 £438
% change year-on-year +8.33% +2.86% +2.94%
Number of hourly rates quoted 0 0 2
Wales median hourly rate - - £43.50
UK median hourly rate £45.00 £42.50 £40.00
% change year-on-year +5.88% +6.25% -

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 Wales with a requirement for process or methodology skills.

All Process and Methodology Skills
Wales
Contract vacancies with a requirement for process or methodology skills 985 1176 1334
As % of all contract IT jobs advertised in Wales 83.55% 83.76% 80.22%
Number of daily rates quoted 655 829 967
Wales median daily rate £388 £400 £356
Median daily rate % change year-on-year -3.13% +12.36% -2.47%
10th Percentile £177 £213 £235
90th Percentile £556 £575 £488
UK median daily rate £450 £425 £413
% change year-on-year +5.88% +3.03% +3.13%
Number of hourly rates quoted 39 52 52
Wales median hourly rate £19.00 £18.00 £15.75
Median hourly rate % change year-on-year +5.56% +14.29% -1.56%
10th Percentile £13.00 £10.53 £10.28
90th Percentile £50.98 £61.25 £41.13
UK median hourly rate £23.32 £24.00 £22.50
% change year-on-year -2.83% +6.67% +18.42%

TDD
Job Vacancy Trend in Wales

Job postings citing TDD as a percentage of all IT jobs advertised in Wales.

Job vacancy trend for TDD in Wales

TDD
Contractor Daily Rate Trend in Wales

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

Contractor daily rate trend for TDD in Wales

TDD
Contractor Daily Rate Histogram in Wales

The daily rate distribution of IT jobs citing TDD in Wales over the 6 months to 19 November 2017.

Contractor daily rate histogram for TDD in Wales

TDD
Contractor Hourly Rate Trend in Wales

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

Contractor hourly rate trend for TDD in Wales

TDD
Contract Job Locations in 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 Wales region over the 6 months to 19 November 2017. 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
South Wales -34 32 £425 -10.53% 9
North Wales -2 3 £450 +32.35% 3
West Wales -5 2 £375 -25.00% 3
TDD
UK

For the 6 months to 19 November 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 Wales region with a requirement for TDD.

1 25 (67.57%) Agile Software Development
2 23 (62.16%) JavaScript
3 21 (56.76%) Test Automation
4 18 (48.65%) BDD
4 18 (48.65%) JSON
4 18 (48.65%) HTML
4 18 (48.65%) CSS
5 17 (45.95%) Unit Testing
5 17 (45.95%) HTML5
6 16 (43.24%) Node.js
6 16 (43.24%) CSS3
6 16 (43.24%) Scrum
7 15 (40.54%) Finance
7 15 (40.54%) Git (software)
8 14 (37.84%) Ajax
9 13 (35.14%) Java
10 12 (32.43%) Continuous Integration
10 12 (32.43%) Responsive Web Design
10 12 (32.43%) Grunt
10 12 (32.43%) gulp
11 11 (29.73%) SonarQube
11 11 (29.73%) npm
12 10 (27.03%) Performance Optimisation
12 10 (27.03%) React
12 10 (27.03%) Perforce
13 9 (24.32%) AngularJS
14 8 (21.62%) SQL
15 7 (18.92%) XML
15 7 (18.92%) OO
15 7 (18.92%) Banking

TDD
Co-occurring IT Skills in 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 3 (8.11%) Apache Solr
1 3 (8.11%) Elasticsearch
1 3 (8.11%) Tomcat
2 1 (2.70%) IIS
Cloud Services
1 11 (29.73%) npm
2 5 (13.51%) Amazon AWS
3 4 (10.81%) Amazon EC2
4 3 (8.11%) Amazon S3
5 1 (2.70%) Amazon CloudWatch
5 1 (2.70%) PaaS
5 1 (2.70%) Serverless
Communications & Networking
1 3 (8.11%) AMQP
2 1 (2.70%) SMS
Database & Business Intelligence
1 4 (10.81%) SQL Server
2 3 (8.11%) Oracle Database
2 3 (8.11%) Oracle Database 12c
2 3 (8.11%) RDBMS
2 3 (8.11%) Relational Database
3 1 (2.70%) Amazon DynamoDB
3 1 (2.70%) NoSQL
3 1 (2.70%) PostgreSQL
3 1 (2.70%) SQL Server 2012
Development Applications
1 15 (40.54%) Git (software)
2 12 (32.43%) Grunt
2 12 (32.43%) gulp
3 11 (29.73%) SonarQube
4 6 (16.22%) JUnit
5 5 (13.51%) Cucumber
5 5 (13.51%) Jenkins
6 4 (10.81%) JIRA
6 4 (10.81%) Subversion
7 3 (8.11%) Ant
7 3 (8.11%) Eclipse
7 3 (8.11%) Gradle
7 3 (8.11%) IntelliJ
7 3 (8.11%) JProfiler
7 3 (8.11%) Maven
7 3 (8.11%) Mockito
8 2 (5.41%) NUnit
8 2 (5.41%) Selenium
8 2 (5.41%) webpack
9 1 (2.70%) Xcode
General
1 15 (40.54%) Finance
2 7 (18.92%) Banking
3 3 (8.11%) Legal
4 2 (5.41%) Retail
5 1 (2.70%) Retail Banking
5 1 (2.70%) Telecoms
Job Titles
1 27 (72.97%) Developer
2 9 (24.32%) UI Developer
3 6 (16.22%) Front End Developer (Client-Side Developer)
3 6 (16.22%) Java Developer
4 4 (10.81%) Full Stack Developer
4 4 (10.81%) JavaScript Developer
5 3 (8.11%) .NET Developer
5 3 (8.11%) Android Developer
5 3 (8.11%) Scrum Master
6 2 (5.41%) C# .NET Developer
6 2 (5.41%) C# Developer
6 2 (5.41%) HTML CSS Developer
6 2 (5.41%) HTML Developer
6 2 (5.41%) Senior Developer
7 1 (2.70%) Agile Scrum Master
7 1 (2.70%) Agile Test Manager
7 1 (2.70%) Angular Developer
7 1 (2.70%) AWS Engineer
7 1 (2.70%) AWS Software Engineer
7 1 (2.70%) Senior Android Developer
Libraries, Frameworks & Software Standards
1 18 (48.65%) CSS
1 18 (48.65%) HTML
1 18 (48.65%) JSON
2 17 (45.95%) HTML5
3 16 (43.24%) CSS3
3 16 (43.24%) Node.js
4 14 (37.84%) Ajax
5 10 (27.03%) React
6 9 (24.32%) AngularJS
7 7 (18.92%) XML
8 6 (16.22%) Hibernate
8 6 (16.22%) JPA
8 6 (16.22%) jQuery
8 6 (16.22%) RESTful
8 6 (16.22%) Spring
8 6 (16.22%) Web Services
9 3 (8.11%) PowerMock
9 3 (8.11%) RabbitMQ
9 3 (8.11%) REST
9 3 (8.11%) Spring Integration
Miscellaneous
1 2 (5.41%) Computer Science
1 2 (5.41%) User Experience
2 1 (2.70%) Analytical Skills
2 1 (2.70%) Greenfield Project
Operating Systems
1 3 (8.11%) Android
1 3 (8.11%) Linux
2 1 (2.70%) Apple iOS
Processes & Methodologies
1 25 (67.57%) Agile Software Development
2 21 (56.76%) Test Automation
3 18 (48.65%) BDD
4 17 (45.95%) Unit Testing
5 16 (43.24%) Scrum
6 12 (32.43%) Continuous Integration
6 12 (32.43%) Responsive Web Design
7 10 (27.03%) Performance Optimisation
8 7 (18.92%) OO
9 6 (16.22%) Front End Development
10 4 (10.81%) Data Protection
10 4 (10.81%) Mobile Development
10 4 (10.81%) MVC
10 4 (10.81%) Software Delivery
10 4 (10.81%) Software Engineering
11 3 (8.11%) Data Security
11 3 (8.11%) Domain-Driven Design
11 3 (8.11%) Integration Testing
11 3 (8.11%) Project Planning
11 3 (8.11%) Workflow
Programming Languages
1 23 (62.16%) JavaScript
2 13 (35.14%) Java
3 8 (21.62%) SQL
4 3 (8.11%) C#
4 3 (8.11%) PL/SQL
4 3 (8.11%) XPath
5 2 (5.41%) ES6
6 1 (2.70%) Apple Swift
6 1 (2.70%) Kotlin
6 1 (2.70%) Objective-C
6 1 (2.70%) Python
Qualifications
1 1 (2.70%) BPSS Clearance
1 1 (2.70%) Computer Science Degree
1 1 (2.70%) Degree
1 1 (2.70%) SC Cleared
1 1 (2.70%) Security Cleared
Quality Assurance & Compliance
1 1 (2.70%) QA
1 1 (2.70%) WCAG
Systems Management
1 1 (2.70%) Business Desktop Deployment
Vendors
1 10 (27.03%) Perforce
2 6 (16.22%) Oracle
3 1 (2.70%) Apple