Period
to 8 August 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 8 August 2020 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > Wales
6 months to
8 Aug 2020
Same period 2019 Same period 2018
Rank 43 49 25
Rank change year-on-year +6 -24 +10
Permanent jobs citing TDD 49 77 164
As % of all permanent jobs advertised in Wales 4.77% 4.26% 8.59%
As % of the Processes & Methodologies category 5.39% 4.66% 9.30%
Number of salaries quoted 41 71 149
Median annual salary £45,000 £45,000 £42,500
Median salary % change year-on-year - +5.88% +3.03%
10th Percentile £37,500 £32,500 £32,500
90th Percentile £65,000 £65,000 £56,250
UK median annual salary £60,000 £55,000 £52,500
% change year-on-year +9.09% +4.76% +5.00%

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 909 1,651 1,764
As % of all permanent IT jobs advertised in Wales 88.42% 91.32% 92.36%
Number of salaries quoted 776 1,422 1,418
Median annual salary £42,500 £40,000 £40,000
Median salary % change year-on-year +6.25% - -
10th Percentile £28,250 £26,250 £25,000
90th Percentile £61,875 £60,000 £60,000
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 8 August 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 8 August 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 +2 42 £45,000 - 8
North Wales +4 5 - - 2
West Wales - 2 £40,000 - 3
TDD
UK

For the 6 months to 8 August 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 32 (65.31%) BDD
2 29 (59.18%) Agile Software Development
3 27 (55.10%) SQL
4 24 (48.98%) .NET
4 24 (48.98%) C#
5 21 (42.86%) JavaScript
6 17 (34.69%) SOLID
7 16 (32.65%) NoSQL
7 16 (32.65%) Mentoring
8 15 (30.61%) Git (software)
9 14 (28.57%) DevOps
10 12 (24.49%) Scrum
11 11 (22.45%) Azure
12 10 (20.41%) Test Automation
12 10 (20.41%) AngularJS
12 10 (20.41%) Java
13 9 (18.37%) Microservices
14 8 (16.33%) Continuous Integration
14 8 (16.33%) MongoDB
15 7 (14.29%) User Stories
15 7 (14.29%) Software Engineering
15 7 (14.29%) QA
15 7 (14.29%) Fintech
15 7 (14.29%) Redux
15 7 (14.29%) .NET Core
15 7 (14.29%) React Native
16 6 (12.24%) Front End Development
16 6 (12.24%) Software Delivery
16 6 (12.24%) Greenfield Project
16 6 (12.24%) Acceptance Criteria

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 (2.04%) Confluence
Business Applications
1 1 (2.04%) Dynamics CRM
Cloud Services
1 11 (22.45%) Azure
2 5 (10.20%) Azure Functions
2 5 (10.20%) PaaS
2 5 (10.20%) Serverless
3 4 (8.16%) AWS
4 2 (4.08%) AWS IoT
4 2 (4.08%) Firebase
4 2 (4.08%) GCP
5 1 (2.04%) BrowserStack
Communications & Networking
1 1 (2.04%) Skype
Database & Business Intelligence
1 16 (32.65%) NoSQL
2 8 (16.33%) MongoDB
3 5 (10.20%) Cosmos DB
4 4 (8.16%) Apache Cassandra
4 4 (8.16%) Neo4j
5 2 (4.08%) SQL Server
6 1 (2.04%) Couchbase
6 1 (2.04%) Data Warehouse
6 1 (2.04%) Relational Database
6 1 (2.04%) SQL Server 2008
6 1 (2.04%) SQL Server 2012
6 1 (2.04%) SQL Server Integration Services
6 1 (2.04%) SQL Server Reporting Services
Development Applications
1 15 (30.61%) Git (software)
2 4 (8.16%) Jenkins
2 4 (8.16%) Maven
3 3 (6.12%) JIRA
4 2 (4.08%) Jasmine
4 2 (4.08%) Karma Test Runner
4 2 (4.08%) Selenium
4 2 (4.08%) SpecFlow
4 2 (4.08%) Subversion
5 1 (2.04%) Cucumber
5 1 (2.04%) JMeter
5 1 (2.04%) MbUnit
5 1 (2.04%) Mercurial
5 1 (2.04%) MSTest
5 1 (2.04%) NUnit
5 1 (2.04%) RSpec
5 1 (2.04%) Team Foundation Server
5 1 (2.04%) TeamCity
5 1 (2.04%) Visual Studio Team System
5 1 (2.04%) webpack
General
1 5 (10.20%) Retail
2 4 (8.16%) Banking
3 3 (6.12%) Games
Job Titles
1 35 (71.43%) Developer
2 21 (42.86%) .NET Developer
3 10 (20.41%) Full Stack Developer
4 6 (12.24%) Front End Developer (Client-Side Developer)
4 6 (12.24%) React Developer
5 5 (10.20%) Integration Developer
5 5 (10.20%) Test Engineer
6 4 (8.16%) Java Engineer
6 4 (8.16%) Java Software Engineer
6 4 (8.16%) Software Engineer
7 3 (6.12%) C# Developer
7 3 (6.12%) Java Developer
8 2 (4.08%) .NET Programmer
8 2 (4.08%) Angular Developer
8 2 (4.08%) C# .NET Developer
8 2 (4.08%) C# Programmer
8 2 (4.08%) MongoDB Developer
8 2 (4.08%) Programmer
8 2 (4.08%) Scrum Master
8 2 (4.08%) Senior Developer
Libraries, Frameworks & Software Standards
1 24 (48.98%) .NET
2 10 (20.41%) AngularJS
3 7 (14.29%) .NET Core
3 7 (14.29%) React Native
3 7 (14.29%) Redux
4 6 (12.24%) Node.js
4 6 (12.24%) React
4 6 (12.24%) RESTful
4 6 (12.24%) Web Services
5 5 (10.20%) RabbitMQ
5 5 (10.20%) Spring
5 5 (10.20%) Spring Boot
6 4 (8.16%) Dropwizard
6 4 (8.16%) Java EE
6 4 (8.16%) JMX
6 4 (8.16%) JPA
6 4 (8.16%) JSF
7 3 (6.12%) .NET Framework
8 2 (4.08%) JSON
8 2 (4.08%) SOAP
Miscellaneous
1 6 (12.24%) Greenfield Project
2 3 (6.12%) User Experience
3 2 (4.08%) Cloud Native
3 2 (4.08%) Mobile App
3 2 (4.08%) Public Cloud
Operating Systems
1 3 (6.12%) Apple iOS
2 1 (2.04%) Android
Processes & Methodologies
1 32 (65.31%) BDD
2 29 (59.18%) Agile Software Development
3 17 (34.69%) SOLID
4 16 (32.65%) Mentoring
5 14 (28.57%) DevOps
6 12 (24.49%) Scrum
7 10 (20.41%) Test Automation
8 9 (18.37%) Microservices
9 8 (16.33%) Continuous Integration
10 7 (14.29%) Fintech
10 7 (14.29%) Software Engineering
10 7 (14.29%) User Stories
11 6 (12.24%) Acceptance Criteria
11 6 (12.24%) Front End Development
11 6 (12.24%) Software Delivery
12 5 (10.20%) API Testing
12 5 (10.20%) Continuous Delivery
12 5 (10.20%) Observability
12 5 (10.20%) Sprint Review
12 5 (10.20%) Web Application Development
Programming Languages
1 27 (55.10%) SQL
2 24 (48.98%) C#
3 21 (42.86%) JavaScript
4 10 (20.41%) Java
5 4 (8.16%) PL/SQL
5 4 (8.16%) Python
6 1 (2.04%) Go
6 1 (2.04%) Java 8
6 1 (2.04%) Perl
6 1 (2.04%) PHP
6 1 (2.04%) Ruby
6 1 (2.04%) TypeScript
Qualifications
1 4 (8.16%) Sun Certification
2 2 (4.08%) ISTQB
3 1 (2.04%) AWS Certification
3 1 (2.04%) Degree
3 1 (2.04%) ISEB
3 1 (2.04%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 7 (14.29%) QA
System Software
1 3 (6.12%) Docker
Systems Management
1 5 (10.20%) Opscode Chef
2 3 (6.12%) Kubernetes
3 1 (2.04%) Terraform
Vendors
1 5 (10.20%) Oracle
2 4 (8.16%) Perforce
3 2 (4.08%) Microsoft
3 2 (4.08%) SAP