Period
to 20 January 2021

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 20 January 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > Wales
6 months to
20 Jan 2021
Same period 2020 Same period 2019
Rank 60 52 35
Rank change year-on-year -8 -17 -10
Permanent jobs citing TDD 26 90 106
As % of all permanent jobs advertised in Wales 2.73% 4.82% 5.60%
As % of the Processes & Methodologies category 3.02% 5.27% 6.26%
Number of salaries quoted 29 79 92
Median annual salary £50,000 £50,000 £45,000
Median salary % change year-on-year - +11.11% +12.50%
10th Percentile £37,900 £35,000 £32,500
90th Percentile £64,000 £65,000 £63,750
UK median annual salary £60,000 £58,000 £55,000
% change year-on-year +3.45% +5.45% +10.00%

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 860 1,709 1,692
As % of all permanent IT jobs advertised in Wales 90.34% 91.54% 89.33%
Number of salaries quoted 707 1,446 1,400
Median annual salary £45,000 £42,500 £40,000
Median salary % change year-on-year +5.88% +6.25% -
10th Percentile £29,900 £26,250 £26,250
90th Percentile £62,500 £63,750 £62,500
UK median annual salary £55,000 £52,500 £52,500
% 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 20 January 2021.

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 20 January 2021. 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 -10 16 £50,000 - 13
West Wales +16 8 £38,000 +1.33% 5
TDD
UK

For the 6 months to 20 January 2021, 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 16 (61.54%) JavaScript
1 16 (61.54%) Agile Software Development
2 13 (50.00%) Git (software)
3 11 (42.31%) Azure
3 11 (42.31%) C#
3 11 (42.31%) .NET
4 9 (34.62%) Scrum
4 9 (34.62%) React
5 8 (30.77%) BDD
5 8 (30.77%) CSS
5 8 (30.77%) HTML
6 7 (26.92%) Microsoft
7 6 (23.08%) SQL
7 6 (23.08%) SQL Server
7 6 (23.08%) NoSQL
7 6 (23.08%) TypeScript
8 5 (19.23%) DevOps
8 5 (19.23%) Robotic Process Automation
8 5 (19.23%) MongoDB
8 5 (19.23%) Node.js
8 5 (19.23%) AWS
8 5 (19.23%) Java
8 5 (19.23%) Python
8 5 (19.23%) Artificial Intelligence
8 5 (19.23%) Software Engineering
8 5 (19.23%) ASP.NET
8 5 (19.23%) Unit Testing
8 5 (19.23%) SOLID
9 4 (15.38%) Redux
9 4 (15.38%) JIRA

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 4 (15.38%) Confluence
2 1 (3.85%) Drupal
2 1 (3.85%) WebSphere
Business Applications
1 2 (7.69%) NetSuite
Cloud Services
1 11 (42.31%) Azure
2 5 (19.23%) AWS
3 3 (11.54%) Serverless
4 2 (7.69%) AWS Lambda
Database & Business Intelligence
1 6 (23.08%) NoSQL
1 6 (23.08%) SQL Server
2 5 (19.23%) MongoDB
3 1 (3.85%) Amazon DynamoDB
3 1 (3.85%) Data Warehouse
3 1 (3.85%) MySQL
3 1 (3.85%) PostgreSQL
Development Applications
1 13 (50.00%) Git (software)
2 4 (15.38%) JIRA
3 3 (11.54%) Selenium
4 2 (7.69%) Cucumber
4 2 (7.69%) JUnit
5 1 (3.85%) Bitbucket
5 1 (3.85%) Cypress.io
5 1 (3.85%) Jenkins
5 1 (3.85%) Maven
5 1 (3.85%) Mockito
5 1 (3.85%) WebDriver
Job Titles
1 23 (88.46%) Developer
2 10 (38.46%) .NET Developer
3 7 (26.92%) Full Stack Developer
4 5 (19.23%) React Developer
5 3 (11.54%) Front End Developer (Client-Side Developer)
5 3 (11.54%) Python Developer
5 3 (11.54%) Senior Developer
6 2 (7.69%) Java Engineer
6 2 (7.69%) Senior Python Developer
7 1 (3.85%) AWS Developer
7 1 (3.85%) Azure Developer
7 1 (3.85%) Azure Engineer
7 1 (3.85%) C# .NET Developer
7 1 (3.85%) DevOps Engineer
7 1 (3.85%) Java Developer
7 1 (3.85%) Lead .NET Developer
7 1 (3.85%) Lead Developer
7 1 (3.85%) Ruby Engineer
7 1 (3.85%) Test Automation Engineer
7 1 (3.85%) Test Leader
Libraries, Frameworks & Software Standards
1 11 (42.31%) .NET
2 9 (34.62%) React
3 8 (30.77%) CSS
3 8 (30.77%) HTML
4 5 (19.23%) ASP.NET
4 5 (19.23%) Node.js
5 4 (15.38%) AngularJS
5 4 (15.38%) Redux
5 4 (15.38%) RESTful
6 3 (11.54%) .NET Core
6 3 (11.54%) CSS3
6 3 (11.54%) Sass
7 2 (7.69%) Django
7 2 (7.69%) HTML5
7 2 (7.69%) Pyramid
7 2 (7.69%) Spring
7 2 (7.69%) Vue.js
8 1 (3.85%) ASP.NET Web API
8 1 (3.85%) Spring Boot
8 1 (3.85%) Twitter Bootstrap
Miscellaneous
1 3 (11.54%) Mobile App
1 3 (11.54%) User Experience
2 1 (3.85%) Greenfield Project
2 1 (3.85%) Self-Motivation
Operating Systems
1 3 (11.54%) Android
1 3 (11.54%) Apple iOS
2 2 (7.69%) Linux
Processes & Methodologies
1 16 (61.54%) Agile Software Development
2 9 (34.62%) Scrum
3 8 (30.77%) BDD
4 5 (19.23%) Artificial Intelligence
4 5 (19.23%) DevOps
4 5 (19.23%) Robotic Process Automation
4 5 (19.23%) Software Engineering
4 5 (19.23%) SOLID
4 5 (19.23%) Unit Testing
5 3 (11.54%) Front End Development
5 3 (11.54%) Kanban
5 3 (11.54%) Mentoring
5 3 (11.54%) Microservices
5 3 (11.54%) Test Automation
6 2 (7.69%) Android Development
6 2 (7.69%) Continuous Integration
6 2 (7.69%) iOS Development
6 2 (7.69%) Migration
6 2 (7.69%) Mobile Application Development
6 2 (7.69%) Open Source
Programming Languages
1 16 (61.54%) JavaScript
2 11 (42.31%) C#
3 6 (23.08%) SQL
3 6 (23.08%) TypeScript
4 5 (19.23%) Java
4 5 (19.23%) Python
5 1 (3.85%) Apple Swift
5 1 (3.85%) C
5 1 (3.85%) C++
5 1 (3.85%) Dart
5 1 (3.85%) Kotlin
5 1 (3.85%) PHP
5 1 (3.85%) Ruby
Qualifications
1 1 (3.85%) Degree
1 1 (3.85%) ISTQB
1 1 (3.85%) ISTQB Advanced Certification
1 1 (3.85%) SC Cleared
1 1 (3.85%) Security Cleared
System Software
1 3 (11.54%) Docker
Systems Management
1 3 (11.54%) Kubernetes
1 3 (11.54%) MIIS
2 2 (7.69%) Ansible
2 2 (7.69%) Terraform
Vendors
1 7 (26.92%) Microsoft