Period
to 29 October 2020

The following table provides summary statistics for permanent job vacancies advertised in Wales with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 6 months to 29 October 2020 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > Wales
6 months to
29 Oct 2020
Same period 2019 Same period 2018
Rank 59 45 27
Rank change year-on-year -14 -18 +15
Permanent jobs citing TDD 20 94 156
As % of all permanent jobs advertised in Wales 2.72% 4.97% 7.65%
As % of the Processes & Methodologies category 3.06% 5.53% 8.52%
Number of salaries quoted 21 83 140
Median annual salary £50,000 £47,500 £45,000
Median salary % change year-on-year +5.26% +5.56% +12.50%
10th Percentile £38,000 £31,500 £33,000
90th Percentile £67,500 £65,000 £59,125
UK median annual salary £60,000 £57,500 £55,000
% change year-on-year +4.35% +4.55% +4.76%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Wales with a requirement for process or methodology skills.

All Process and Methodology Skills
Wales
Permanent vacancies with a requirement for process or methodology skills 653 1,700 1,832
As % of all permanent IT jobs advertised in Wales 88.96% 89.85% 89.89%
Number of salaries quoted 590 1,432 1,481
Median annual salary £45,000 £42,500 £40,000
Median salary % change year-on-year +5.88% +6.25% -
10th Percentile £28,748 £27,000 £25,000
90th Percentile £57,500 £65,000 £62,500
UK median annual salary £55,000 £52,500 £50,000
% change year-on-year +4.76% +5.00% -

TDD
Job Vacancy Trend in Wales

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

Job vacancy trend for TDD in Wales

TDD
Salary Trend in Wales

3-month moving average salary quoted in jobs citing TDD in Wales.

Salary trend for TDD in Wales

TDD
Salary Histogram in Wales

Salary distribution for jobs citing TDD in Wales over the 6 months to 29 October 2020.

Salary histogram for TDD in Wales

TDD
Job Locations in Wales

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the Wales region over the 6 months to 29 October 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
South Wales -12 16 £50,000 +5.26% 17
West Wales +4 3 £39,000 +4.00% 1
TDD
UK

For the 6 months to 29 October 2020, IT 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 permanent job ads across the Wales region with a requirement for TDD.

1 12 (60.00%) C#
1 12 (60.00%) .NET
2 11 (55.00%) SQL
3 10 (50.00%) JavaScript
3 10 (50.00%) Agile Software Development
3 10 (50.00%) BDD
4 9 (45.00%) NoSQL
5 7 (35.00%) SOLID
6 6 (30.00%) DevOps
6 6 (30.00%) Scrum
7 5 (25.00%) Mentoring
8 4 (20.00%) Git (software)
8 4 (20.00%) Test Automation
8 4 (20.00%) Software Engineering
8 4 (20.00%) Azure
9 3 (15.00%) AWS
9 3 (15.00%) Continuous Integration
9 3 (15.00%) Unit Testing
9 3 (15.00%) HTML
9 3 (15.00%) Java
9 3 (15.00%) SQL Server
9 3 (15.00%) CSS
9 3 (15.00%) Web Services
9 3 (15.00%) MongoDB
9 3 (15.00%) Node.js
9 3 (15.00%) React
10 2 (10.00%) Continuous Delivery
10 2 (10.00%) TypeScript
10 2 (10.00%) Docker
10 2 (10.00%) ASP.NET

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 1 (5.00%) Confluence
1 1 (5.00%) Drupal
Cloud Services
1 4 (20.00%) Azure
2 3 (15.00%) AWS
3 1 (5.00%) Serverless
Database & Business Intelligence
1 9 (45.00%) NoSQL
2 3 (15.00%) MongoDB
2 3 (15.00%) SQL Server
3 2 (10.00%) Data Warehouse
4 1 (5.00%) Amazon DynamoDB
4 1 (5.00%) Couchbase
4 1 (5.00%) MySQL
4 1 (5.00%) PostgreSQL
4 1 (5.00%) SQL Server 2008
4 1 (5.00%) SQL Server 2012
4 1 (5.00%) SQL Server Integration Services
4 1 (5.00%) SQL Server Reporting Services
Development Applications
1 4 (20.00%) Git (software)
2 2 (10.00%) Cucumber
2 2 (10.00%) Selenium
3 1 (5.00%) Jenkins
3 1 (5.00%) JIRA
3 1 (5.00%) JUnit
3 1 (5.00%) Maven
3 1 (5.00%) MbUnit
3 1 (5.00%) Mercurial
3 1 (5.00%) MSTest
3 1 (5.00%) NUnit
3 1 (5.00%) SpecFlow
3 1 (5.00%) Team Foundation Server
3 1 (5.00%) TeamCity
3 1 (5.00%) WebDriver
Job Titles
1 17 (85.00%) Developer
2 10 (50.00%) .NET Developer
3 9 (45.00%) Full Stack Developer
4 2 (10.00%) React Developer
5 1 (5.00%) Angular Developer
5 1 (5.00%) Automation Test Lead
5 1 (5.00%) AWS Developer
5 1 (5.00%) Business Intelligence Developer
5 1 (5.00%) Drupal Developer
5 1 (5.00%) Front End Developer (Client-Side Developer)
5 1 (5.00%) Java Developer
5 1 (5.00%) Java Engineer
5 1 (5.00%) Java Software Developer
5 1 (5.00%) Lead Developer
5 1 (5.00%) Ruby Engineer
5 1 (5.00%) Senior Business Intelligence Developer
5 1 (5.00%) Senior Developer
5 1 (5.00%) Test Automation Engineer
5 1 (5.00%) Test Engineer
5 1 (5.00%) Test Leader
Libraries, Frameworks & Software Standards
1 12 (60.00%) .NET
2 3 (15.00%) CSS
2 3 (15.00%) HTML
2 3 (15.00%) Node.js
2 3 (15.00%) React
2 3 (15.00%) Web Services
3 2 (10.00%) ASP.NET
3 2 (10.00%) Gherkin
3 2 (10.00%) Vue.js
4 1 (5.00%) .NET Core
4 1 (5.00%) AngularJS
4 1 (5.00%) ASP.NET Core
4 1 (5.00%) React Native
4 1 (5.00%) Spring
4 1 (5.00%) Spring Boot
4 1 (5.00%) Swagger
Miscellaneous
1 1 (5.00%) Greenfield Project
1 1 (5.00%) Public Cloud
1 1 (5.00%) User Experience
Operating Systems
1 1 (5.00%) Android
1 1 (5.00%) Apple iOS
Processes & Methodologies
1 10 (50.00%) Agile Software Development
1 10 (50.00%) BDD
2 7 (35.00%) SOLID
3 6 (30.00%) DevOps
3 6 (30.00%) Scrum
4 5 (25.00%) Mentoring
5 4 (20.00%) Software Engineering
5 4 (20.00%) Test Automation
6 3 (15.00%) Continuous Integration
6 3 (15.00%) Unit Testing
7 2 (10.00%) Continuous Delivery
7 2 (10.00%) Fintech
8 1 (5.00%) Acceptance Criteria
8 1 (5.00%) Decision-Making
8 1 (5.00%) Mobile Development
8 1 (5.00%) Problem-Solving
8 1 (5.00%) Project Delivery
8 1 (5.00%) Robotic Process Automation
8 1 (5.00%) Smoke Testing
8 1 (5.00%) Software Delivery
Programming Languages
1 12 (60.00%) C#
2 11 (55.00%) SQL
3 10 (50.00%) JavaScript
4 3 (15.00%) Java
5 2 (10.00%) TypeScript
6 1 (5.00%) C
6 1 (5.00%) C++
6 1 (5.00%) Go
6 1 (5.00%) Perl
6 1 (5.00%) PHP
6 1 (5.00%) Ruby
Qualifications
1 1 (5.00%) Degree
1 1 (5.00%) ISTQB
1 1 (5.00%) ISTQB Advanced Certification
System Software
1 2 (10.00%) Docker
Systems Management
1 2 (10.00%) Kubernetes
2 1 (5.00%) MIIS
Vendors
1 1 (5.00%) Microsoft