Period
to 31 May 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 31 May 2020 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > Wales
6 months to
31 May 2020
Same period 2019 Same period 2018
Rank 48 54 23
Rank change year-on-year +6 -31 +8
Permanent jobs citing TDD 73 67 161
As % of all permanent jobs advertised in Wales 4.95% 3.93% 8.86%
As % of the Processes & Methodologies category 5.51% 4.26% 9.39%
Number of salaries quoted 64 62 151
Median annual salary £45,000 £42,500 £40,000
Median salary % change year-on-year +5.88% +6.25% -5.88%
10th Percentile £37,500 £31,250 £30,750
90th Percentile £65,000 £63,625 £52,500
UK median annual salary £60,000 £55,000 £50,000
% change year-on-year +9.09% +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 1,324 1,572 1,714
As % of all permanent IT jobs advertised in Wales 89.82% 92.15% 94.28%
Number of salaries quoted 1,138 1,332 1,401
Median annual salary £42,500 £40,000 £40,000
Median salary % change year-on-year +6.25% - -
10th Percentile £26,250 £26,749 £25,000
90th Percentile £62,500 £58,750 £57,500
UK median annual salary £55,000 £52,500 £50,000
% change year-on-year +4.76% +5.00% +5.26%

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 31 May 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 31 May 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 +1 67 £45,000 +5.88% 5
North Wales - 5 - - 2
West Wales - 1 - - 2
TDD
UK

For the 6 months to 31 May 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 47 (64.38%) BDD
2 41 (56.16%) Agile Software Development
3 38 (52.05%) .NET
4 37 (50.68%) SQL
5 35 (47.95%) C#
6 32 (43.84%) JavaScript
7 24 (32.88%) SOLID
8 23 (31.51%) NoSQL
9 22 (30.14%) DevOps
10 20 (27.40%) Mentoring
11 18 (24.66%) Continuous Integration
11 18 (24.66%) Java
11 18 (24.66%) Scrum
12 17 (23.29%) Git (software)
13 16 (21.92%) Test Automation
13 16 (21.92%) Software Engineering
14 14 (19.18%) Azure
15 12 (16.44%) Kanban
15 12 (16.44%) SDLC
16 11 (15.07%) Microservices
16 11 (15.07%) AngularJS
16 11 (15.07%) Retail
17 10 (13.70%) Banking
18 9 (12.33%) QA
18 9 (12.33%) PHP
18 9 (12.33%) Web Services
18 9 (12.33%) Fintech
19 8 (10.96%) React Native
19 8 (10.96%) Jenkins
19 8 (10.96%) User Stories

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 (2.74%) Apache
1 2 (2.74%) lighttpd
2 1 (1.37%) CMS
2 1 (1.37%) Confluence
2 1 (1.37%) Elasticsearch
2 1 (1.37%) SharePoint
2 1 (1.37%) Umbraco
Business Applications
1 1 (1.37%) Dynamics CRM
Cloud Services
1 14 (19.18%) Azure
2 8 (10.96%) AWS
3 6 (8.22%) Serverless
4 5 (6.85%) Azure Functions
4 5 (6.85%) PaaS
5 4 (5.48%) GCP
6 2 (2.74%) AWS IoT
6 2 (2.74%) Firebase
6 2 (2.74%) GitHub
7 1 (1.37%) AWS CodeDeploy
7 1 (1.37%) BrowserStack
Communications & Networking
1 2 (2.74%) HTTP
2 1 (1.37%) Skype
Database & Business Intelligence
1 23 (31.51%) NoSQL
2 7 (9.59%) MongoDB
3 6 (8.22%) Apache Cassandra
3 6 (8.22%) SQL Server
4 5 (6.85%) Cosmos DB
4 5 (6.85%) Data Warehouse
5 4 (5.48%) Neo4j
6 2 (2.74%) MySQL
6 2 (2.74%) SQLite
7 1 (1.37%) Relational Database
Development Applications
1 17 (23.29%) Git (software)
2 8 (10.96%) Jenkins
3 6 (8.22%) Cucumber
4 5 (6.85%) JIRA
5 4 (5.48%) Maven
6 3 (4.11%) Subversion
7 2 (2.74%) Bitbucket
7 2 (2.74%) Jasmine
7 2 (2.74%) Karma Test Runner
8 1 (1.37%) CircleCI
8 1 (1.37%) Gatling
8 1 (1.37%) JMeter
8 1 (1.37%) RSpec
8 1 (1.37%) Selenium
8 1 (1.37%) SpecFlow
8 1 (1.37%) Visual Studio Team System
8 1 (1.37%) webpack
General
1 11 (15.07%) Retail
2 10 (13.70%) Banking
3 8 (10.96%) Finance
4 3 (4.11%) Games
Job Titles
1 54 (73.97%) Developer
2 33 (45.21%) .NET Developer
3 15 (20.55%) Full Stack Developer
4 10 (13.70%) Java Engineer
4 10 (13.70%) Java Software Engineer
4 10 (13.70%) Software Developer
4 10 (13.70%) Software Engineer
5 9 (12.33%) Java Developer
6 7 (9.59%) Java Software Developer
7 6 (8.22%) .NET Software Developer
7 6 (8.22%) .NET Software Engineer
7 6 (8.22%) Developer/Software Engineer
7 6 (8.22%) Front End Developer (Client-Side Developer)
7 6 (8.22%) React Developer
8 5 (6.85%) Integration Developer
8 5 (6.85%) Test Engineer
9 4 (5.48%) C++ Developer
10 3 (4.11%) C# Developer
10 3 (4.11%) Head of Development
11 2 (2.74%) Scrum Master
Libraries, Frameworks & Software Standards
1 38 (52.05%) .NET
2 11 (15.07%) AngularJS
3 9 (12.33%) Web Services
4 8 (10.96%) React
4 8 (10.96%) React Native
4 8 (10.96%) RESTful
5 7 (9.59%) Node.js
5 7 (9.59%) Redux
6 6 (8.22%) .NET Core
6 6 (8.22%) Spring
6 6 (8.22%) Spring Boot
7 5 (6.85%) RabbitMQ
8 4 (5.48%) Dropwizard
8 4 (5.48%) Java EE
8 4 (5.48%) JMX
8 4 (5.48%) JPA
8 4 (5.48%) JSF
8 4 (5.48%) JSON
9 3 (4.11%) .NET Framework
9 3 (4.11%) LAMP
Miscellaneous
1 6 (8.22%) Greenfield Project
2 4 (5.48%) Mobile App
3 3 (4.11%) User Experience
4 2 (2.74%) Cloud Native
4 2 (2.74%) Linux Command Line
4 2 (2.74%) Public Cloud
5 1 (1.37%) Social Media
Operating Systems
1 6 (8.22%) Linux
2 5 (6.85%) Apple iOS
3 4 (5.48%) Unix
4 3 (4.11%) Android
Processes & Methodologies
1 47 (64.38%) BDD
2 41 (56.16%) Agile Software Development
3 24 (32.88%) SOLID
4 22 (30.14%) DevOps
5 20 (27.40%) Mentoring
6 18 (24.66%) Continuous Integration
6 18 (24.66%) Scrum
7 16 (21.92%) Software Engineering
7 16 (21.92%) Test Automation
8 12 (16.44%) Kanban
8 12 (16.44%) SDLC
9 11 (15.07%) Microservices
10 9 (12.33%) Fintech
11 8 (10.96%) User Stories
12 7 (9.59%) Software Delivery
13 6 (8.22%) Acceptance Criteria
13 6 (8.22%) E-Commerce
13 6 (8.22%) Front End Development
13 6 (8.22%) Problem-Solving
13 6 (8.22%) Project Management
Programming Languages
1 37 (50.68%) SQL
2 35 (47.95%) C#
3 32 (43.84%) JavaScript
4 18 (24.66%) Java
5 9 (12.33%) PHP
6 7 (9.59%) Python
7 5 (6.85%) C++
8 4 (5.48%) PL/SQL
9 3 (4.11%) Perl
10 2 (2.74%) Bash Shell
10 2 (2.74%) Go
10 2 (2.74%) Java 8
10 2 (2.74%) Objective-C
10 2 (2.74%) Ruby
11 1 (1.37%) Scala
11 1 (1.37%) TypeScript
Qualifications
1 4 (5.48%) Sun Certification
2 2 (2.74%) ISTQB
3 1 (1.37%) AWS Certification
3 1 (1.37%) Degree
3 1 (1.37%) ISEB
3 1 (1.37%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 9 (12.33%) QA
System Software
1 5 (6.85%) Docker
Systems Management
1 5 (6.85%) Kubernetes
1 5 (6.85%) Opscode Chef
2 1 (1.37%) Terraform
Vendors
1 5 (6.85%) Microsoft
1 5 (6.85%) Oracle
2 4 (5.48%) Perforce
3 2 (2.74%) Google
3 2 (2.74%) SAP