Period
to 13 June 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 13 June 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > Wales
6 months to
13 Jun 2021
Same period 2020 Same period 2019
Rank 67 44 53
Rank change year-on-year -23 +9 -29
Permanent jobs citing TDD 40 69 69
As % of all permanent jobs advertised in Wales 2.95% 5.01% 4.08%
As % of the Processes & Methodologies category 3.24% 5.59% 4.46%
Number of salaries quoted 32 60 61
10th Percentile £35,745 £37,500 £31,250
25th Percentile £37,375 £40,000 £33,750
Median annual salary (50th Percentile) £42,500 £45,000 £42,500
Median % change year-on-year -5.56% +5.88% +6.25%
75th Percentile £57,500 £50,000 £55,000
90th Percentile £62,500 £65,000 £63,750
UK median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +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 1,233 1,234 1,548
As % of all permanent IT jobs advertised in Wales 91.06% 89.62% 91.60%
Number of salaries quoted 835 1,063 1,327
10th Percentile £28,450 £26,250 £26,750
25th Percentile £33,438 £32,688 £31,250
Median annual salary (50th Percentile) £44,318 £42,500 £40,000
Median % change year-on-year +4.28% +6.25% -
75th Percentile £53,593 £52,500 £50,000
90th Percentile £62,500 £62,500 £58,300
UK median annual salary £55,000 £55,000 £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 13 June 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 13 June 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 -19 24 £50,000 +11.11% 21
West Wales +2 14 £38,000 - 4
North Wales -4 1 - - 4
TDD
UK

For the 6 months to 13 June 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 29 (72.50%) Agile Software Development
2 22 (55.00%) BDD
3 19 (47.50%) Scrum
4 16 (40.00%) Azure
4 16 (40.00%) Microservices
5 15 (37.50%) Docker
5 15 (37.50%) Java
5 15 (37.50%) JavaScript
5 15 (37.50%) .NET
6 14 (35.00%) Microsoft
6 14 (35.00%) Git (software)
7 13 (32.50%) C#
8 12 (30.00%) Spring
8 12 (30.00%) Jenkins
9 11 (27.50%) DevOps
10 10 (25.00%) RESTful
11 9 (22.50%) Continuous Improvement
11 9 (22.50%) Coaching
11 9 (22.50%) Kubernetes
12 8 (20.00%) Mentoring
12 8 (20.00%) Kanban
12 8 (20.00%) Artificial Intelligence
12 8 (20.00%) Problem-Solving
13 7 (17.50%) Terraform
13 7 (17.50%) Software Engineering
13 7 (17.50%) Continuous Integration
13 7 (17.50%) HTML
13 7 (17.50%) CSS
13 7 (17.50%) Open Source
14 6 (15.00%) Data Analytics

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 2 (5.00%) Confluence
1 2 (5.00%) Elasticsearch
2 1 (2.50%) OnBase
Applications
1 1 (2.50%) Microsoft Office
Business Applications
1 2 (5.00%) NetSuite
Cloud Services
1 16 (40.00%) Azure
2 6 (15.00%) GitHub
2 6 (15.00%) OpenShift
2 6 (15.00%) Serverless
3 2 (5.00%) AWS
4 1 (2.50%) npm
4 1 (2.50%) PaaS
4 1 (2.50%) Yarn
Database & Business Intelligence
1 6 (15.00%) Big Data
2 5 (12.50%) SQL Server
3 2 (5.00%) MySQL
3 2 (5.00%) PostgreSQL
4 1 (2.50%) MongoDB
Development Applications
1 14 (35.00%) Git (software)
2 12 (30.00%) Jenkins
3 4 (10.00%) Selenium
3 4 (10.00%) Visual Studio
4 2 (5.00%) Cucumber
4 2 (5.00%) Cypress.io
4 2 (5.00%) JIRA
5 1 (2.50%) SpecFlow
General
1 6 (15.00%) Advertising
1 6 (15.00%) Social Skills
2 1 (2.50%) Analytical Skills
2 1 (2.50%) Finance
Job Titles
1 30 (75.00%) Developer
2 11 (27.50%) Java Developer
2 11 (27.50%) Senior Developer
3 7 (17.50%) .NET Developer
4 4 (10.00%) Software Engineer
5 3 (7.50%) Applications Developer
5 3 (7.50%) React Developer
5 3 (7.50%) Senior Applications Developer
5 3 (7.50%) Senior Java Developer
6 2 (5.00%) Azure DevOps
6 2 (5.00%) Azure DevOps Engineer
6 2 (5.00%) Azure Engineer
6 2 (5.00%) DevOps Engineer
6 2 (5.00%) Front End Developer (Client-Side Developer)
6 2 (5.00%) Full Stack Developer
6 2 (5.00%) Lead .NET Developer
6 2 (5.00%) Lead Developer
6 2 (5.00%) Python Developer
6 2 (5.00%) Senior Python Developer
6 2 (5.00%) Software Developer
Libraries, Frameworks & Software Standards
1 15 (37.50%) .NET
2 12 (30.00%) Spring
3 10 (25.00%) RESTful
4 7 (17.50%) CSS
4 7 (17.50%) HTML
5 6 (15.00%) CGI
5 6 (15.00%) GraphQL
5 6 (15.00%) Hibernate
5 6 (15.00%) JavaBeans
5 6 (15.00%) Middleware
5 6 (15.00%) React
5 6 (15.00%) REST
5 6 (15.00%) Spring Boot
5 6 (15.00%) Web Services
6 5 (12.50%) .NET Core
6 5 (12.50%) ASP.NET
7 4 (10.00%) Redux
8 3 (7.50%) Flutter
8 3 (7.50%) Node.js
9 2 (5.00%) CSS3
Miscellaneous
1 3 (7.50%) Mobile App
1 3 (7.50%) User Experience
2 1 (2.50%) Greenfield Project
2 1 (2.50%) NHS
2 1 (2.50%) Self-Motivation
2 1 (2.50%) Virtual Team
Operating Systems
1 4 (10.00%) Android
1 4 (10.00%) Apple iOS
2 2 (5.00%) Linux
Processes & Methodologies
1 29 (72.50%) Agile Software Development
2 22 (55.00%) BDD
3 19 (47.50%) Scrum
4 16 (40.00%) Microservices
5 11 (27.50%) DevOps
6 9 (22.50%) Coaching
6 9 (22.50%) Continuous Improvement
7 8 (20.00%) Artificial Intelligence
7 8 (20.00%) Kanban
7 8 (20.00%) Mentoring
7 8 (20.00%) Problem-Solving
8 7 (17.50%) Continuous Integration
8 7 (17.50%) Open Source
8 7 (17.50%) Software Engineering
9 6 (15.00%) Analytics
9 6 (15.00%) Big Data Analytics
9 6 (15.00%) Data Analytics
9 6 (15.00%) Robotic Process Automation
9 6 (15.00%) SOA
10 5 (12.50%) SOLID
Programming Languages
1 15 (37.50%) Java
1 15 (37.50%) JavaScript
2 13 (32.50%) C#
3 6 (15.00%) Java 8
4 5 (12.50%) Python
5 4 (10.00%) TypeScript
6 3 (7.50%) Apple Swift
6 3 (7.50%) Dart
6 3 (7.50%) Kotlin
7 1 (2.50%) PHP
7 1 (2.50%) SQL
Qualifications
1 6 (15.00%) SC Cleared
1 6 (15.00%) Security Cleared
2 4 (10.00%) Degree
3 2 (5.00%) ISEB
3 2 (5.00%) ISTQB
3 2 (5.00%) ISTQB Foundation Certification
4 1 (2.50%) SAFe Agilist
Quality Assurance & Compliance
1 1 (2.50%) GDPR
1 1 (2.50%) PMO
1 1 (2.50%) QA
System Software
1 15 (37.50%) Docker
Systems Management
1 9 (22.50%) Kubernetes
2 7 (17.50%) Terraform
3 4 (10.00%) MIIS
4 2 (5.00%) Ansible
Vendors
1 14 (35.00%) Microsoft
2 1 (2.50%) Guidewire
2 1 (2.50%) Hyland
2 1 (2.50%) Xamarin