Period
to 24 November 2020

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 6 months to 24 November 2020 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
6 months to
24 Nov 2020
Same period 2019 Same period 2018
Rank 37 64 29
Rank change year-on-year +27 -35 +20
Contract jobs citing TDD 7 10 85
As % of all contract jobs advertised in South Wales 1.75% 1.02% 6.08%
As % of the Processes & Methodologies category 2.25% 1.26% 6.92%
Number of daily rates quoted 7 8 80
Median daily rate £375 £425 £425
Median daily rate % change year-on-year -11.76% - -
10th Percentile £198 £359 £324
90th Percentile £440 £475 £500
Wales median daily rate £369 £425 £425
% change year-on-year -13.24% - -
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
Wales median hourly rate - - -

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 South Wales with a requirement for process or methodology skills.

All Process and Methodology Skills
South Wales
Contract vacancies with a requirement for process or methodology skills 311 794 1,229
As % of all contract IT jobs advertised in South Wales 77.75% 81.35% 87.91%
Number of daily rates quoted 185 552 892
Median daily rate £425 £425 £413
Median daily rate % change year-on-year - +3.03% +10.00%
10th Percentile £197 £263 £300
90th Percentile £550 £575 £575
Wales median daily rate £450 £425 £418
% change year-on-year +5.88% +1.80% +7.05%
Number of hourly rates quoted 36 51 40
Median hourly rate £21.83 £20.50 £15.32
Median hourly rate % change year-on-year +6.49% +33.86% -18.32%
10th Percentile £15.00 £13.35 £10.75
90th Percentile £35.00 £42.00 £42.00
Median hourly rate £20.00 £22.34 £15.00
% change year-on-year -10.45% +48.90% -20.00%

TDD
Job Vacancy Trend in South Wales

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

Job vacancy trend for TDD in South Wales

TDD
Contractor Daily Rate Trend in South Wales

3-month moving average daily rate quoted in jobs citing TDD in South Wales.

Daily rate trend for TDD in South Wales

TDD
Daily Rate Histogram in South Wales

Daily rate distribution for jobs citing TDD in South Wales over the 6 months to 24 November 2020.

Daily rate histogram for TDD in South Wales

TDD
Contractor Hourly Rate Trend in South Wales

3-month moving average hourly rates quoted in jobs citing TDD in South Wales.

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 6 months to 24 November 2020. 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
Cardiff +29 4 £300 -29.41% 15
Newport +10 2 £309 -22.81%
Caerphilly - 1 £418 -
TDD
Wales

For the 6 months to 24 November 2020, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the South Wales region with a requirement for TDD.

1 5 (71.43%) Agile Software Development
1 5 (71.43%) BDD
2 4 (57.14%) Git (software)
2 4 (57.14%) Scrum
2 4 (57.14%) SQL
2 4 (57.14%) Greenfield Project
3 3 (42.86%) OOP
3 3 (42.86%) OO
3 3 (42.86%) Python
3 3 (42.86%) Finance
3 3 (42.86%) Test Automation
3 3 (42.86%) Continuous Integration
3 3 (42.86%) Jenkins
4 2 (28.57%) DevOps
4 2 (28.57%) Mentoring
4 2 (28.57%) MongoDB
4 2 (28.57%) NoSQL
4 2 (28.57%) Continuous Improvement
4 2 (28.57%) SpecFlow
4 2 (28.57%) Gherkin
4 2 (28.57%) ATDD
4 2 (28.57%) SQL Server 2012
4 2 (28.57%) Couchbase
4 2 (28.57%) SQL Server Reporting Services
4 2 (28.57%) Selenium
4 2 (28.57%) Mercurial
4 2 (28.57%) MSTest
4 2 (28.57%) MbUnit
4 2 (28.57%) Team Foundation Server
4 2 (28.57%) SQL Server 2008

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 1 (14.29%) Apache Spark
Database & Business Intelligence
1 2 (28.57%) Couchbase
1 2 (28.57%) Data Warehouse
1 2 (28.57%) MongoDB
1 2 (28.57%) NoSQL
1 2 (28.57%) SQL Server
1 2 (28.57%) SQL Server 2008
1 2 (28.57%) SQL Server 2012
1 2 (28.57%) SQL Server Integration Services
1 2 (28.57%) SQL Server Reporting Services
2 1 (14.29%) MySQL
Development Applications
1 4 (57.14%) Git (software)
2 3 (42.86%) Jenkins
3 2 (28.57%) MbUnit
3 2 (28.57%) Mercurial
3 2 (28.57%) MSTest
3 2 (28.57%) NUnit
3 2 (28.57%) Selenium
3 2 (28.57%) SpecFlow
3 2 (28.57%) Team Foundation Server
3 2 (28.57%) TeamCity
3 2 (28.57%) Visual Studio
4 1 (14.29%) GitLab
4 1 (14.29%) Maven
4 1 (14.29%) Rational Team Concert
4 1 (14.29%) Subversion
General
1 3 (42.86%) Finance
2 2 (28.57%) Law
Job Titles
1 5 (71.43%) Developer
2 2 (28.57%) Agile Developer
2 2 (28.57%) Business Intelligence Developer
2 2 (28.57%) Java Developer
2 2 (28.57%) SSIS Developer
2 2 (28.57%) SSRS Developer
3 1 (14.29%) Applications Developer
3 1 (14.29%) C# Application Developer
3 1 (14.29%) C# Developer
3 1 (14.29%) C# Software Developer
3 1 (14.29%) Data Scientist
3 1 (14.29%) Software Developer
3 1 (14.29%) Software Engineer
Libraries, Frameworks & Software Standards
1 2 (28.57%) Gherkin
2 1 (14.29%) .NET
2 1 (14.29%) .NET Core
2 1 (14.29%) AngularJS
2 1 (14.29%) Aurelia
2 1 (14.29%) J2EE
2 1 (14.29%) WCF
2 1 (14.29%) WPF
Miscellaneous
1 4 (57.14%) Greenfield Project
2 1 (14.29%) Algorithms
Operating Systems
1 1 (14.29%) Windows
Processes & Methodologies
1 5 (71.43%) Agile Software Development
1 5 (71.43%) BDD
2 4 (57.14%) Scrum
3 3 (42.86%) Continuous Integration
3 3 (42.86%) OO
3 3 (42.86%) OOP
3 3 (42.86%) Test Automation
4 2 (28.57%) ATDD
4 2 (28.57%) Business Intelligence
4 2 (28.57%) Continuous Improvement
4 2 (28.57%) Decision-Making
4 2 (28.57%) DevOps
4 2 (28.57%) Mentoring
4 2 (28.57%) Problem-Solving
4 2 (28.57%) Test-First Development
4 2 (28.57%) Unit Testing
5 1 (14.29%) Backlog Refinement
5 1 (14.29%) Product Backlog
5 1 (14.29%) Sprint Backlog
5 1 (14.29%) Sprint Planning
Programming Languages
1 4 (57.14%) SQL
2 3 (42.86%) Python
3 2 (28.57%) C#
3 2 (28.57%) C++
3 2 (28.57%) Java
3 2 (28.57%) Java 8
4 1 (14.29%) TypeScript
Qualifications
1 1 (14.29%) Postgraduate
1 1 (14.29%) SC Cleared
1 1 (14.29%) Security Cleared
Vendors
1 2 (28.57%) Microsoft
2 1 (14.29%) IBM