Period
to 19 January 2019

The following table provides summary statistics for permanent job vacancies advertised in Cardiff 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 19 January 2019 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
South Wales > Cardiff
6 months to
19 Jan 2019
Same period 2018 Same period 2017
Rank 34 25 22
Rank change year-on-year -9 -3 +23
Permanent jobs citing TDD 57 61 101
As % of all permanent IT jobs advertised in Cardiff 5.40% 7.85% 8.20%
As % of the Processes & Methodologies category 6.26% 8.30% 8.79%
Number of salaries quoted 46 60 105
Cardiff median annual salary £45,000 £42,500 £35,000
Median salary % change year-on-year +5.88% +21.43% -6.67%
10th Percentile £32,500 £21,250 £24,250
90th Percentile £63,125 £51,375 £85,000
South Wales median annual salary £45,000 £40,000 £35,000
% change year-on-year +12.50% +14.29% -6.67%

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 Cardiff with a requirement for process or methodology skills.

All Process and Methodology Skills
Cardiff
Permanent vacancies with a requirement for process or methodology skills 911 735 1,149
As % of all permanent IT jobs advertised in Cardiff 86.27% 94.59% 93.26%
Number of salaries quoted 753 648 1,062
Cardiff median annual salary £40,000 £37,500 £36,500
Median salary % change year-on-year +6.67% +2.74% +4.29%
10th Percentile £25,550 £24,175 £22,525
90th Percentile £62,500 £54,825 £57,500
South Wales median annual salary £40,000 £38,500 £37,500
% change year-on-year +3.90% +2.67% +1.96%

TDD
Job Vacancy Trend in Cardiff

Job postings citing TDD as a percentage of all IT jobs advertised in Cardiff.

Job vacancy trend for TDD in Cardiff

TDD
Salary Trend in Cardiff

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD in Cardiff.

Salary trend for TDD in Cardiff

TDD
Salary Histogram in Cardiff

The salary distribution of IT jobs citing TDD in Cardiff over the 6 months to 19 January 2019.

Salary histogram for TDD in Cardiff

For the 6 months to 19 January 2019, 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 Cardiff region with a requirement for TDD.

1 47 (82.46%) Agile Software Development
2 33 (57.89%) Scrum
3 26 (45.61%) C#
3 26 (45.61%) Test Automation
4 24 (42.11%) Selenium
4 24 (42.11%) Unit Testing
5 23 (40.35%) BDD
6 22 (38.60%) Java
7 21 (36.84%) Continuous Integration
8 20 (35.09%) .NET
9 16 (28.07%) SOLID
10 15 (26.32%) NoSQL
11 14 (24.56%) Amazon AWS
11 14 (24.56%) QA
11 14 (24.56%) JavaScript
12 13 (22.81%) MVC
12 13 (22.81%) Microservices
13 12 (21.05%) Analytical Skills
13 12 (21.05%) REST
13 12 (21.05%) AngularJS
13 12 (21.05%) Web Services
13 12 (21.05%) .NET Framework
13 12 (21.05%) Cucumber
14 11 (19.30%) Python
14 11 (19.30%) OOD
14 11 (19.30%) PHP
14 11 (19.30%) JMeter
14 11 (19.30%) Analytical Mindset
14 11 (19.30%) Self-Motivation
15 10 (17.54%) React

TDD
Co-occurring IT Skills in Cardiff 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 3 (5.26%) Confluence
2 2 (3.51%) Apache
2 2 (3.51%) nginx
3 1 (1.75%) Elasticsearch
3 1 (1.75%) SharePoint
Cloud Services
1 14 (24.56%) Amazon AWS
2 6 (10.53%) Microsoft Azure
3 2 (3.51%) Cloud Computing
4 1 (1.75%) Dynamics 365
4 1 (1.75%) GitHub
4 1 (1.75%) Google Cloud Platform
4 1 (1.75%) SaaS
4 1 (1.75%) Slack
4 1 (1.75%) Trello
Communications & Networking
1 3 (5.26%) Internet
2 1 (1.75%) Hyperconnected
Database & Business Intelligence
1 15 (26.32%) NoSQL
2 8 (14.04%) SQL Server
3 6 (10.53%) MongoDB
3 6 (10.53%) Relational Database
4 5 (8.77%) SQL Server 2012
4 5 (8.77%) SQL Server 2016
5 4 (7.02%) Redis
6 3 (5.26%) Amazon DynamoDB
6 3 (5.26%) MySQL
6 3 (5.26%) PostgreSQL
7 2 (3.51%) Couchbase
7 2 (3.51%) Data Warehouse
7 2 (3.51%) SQL Server 2008
Development Applications
1 24 (42.11%) Selenium
2 12 (21.05%) Cucumber
3 11 (19.30%) JMeter
4 9 (15.79%) Git (software)
4 9 (15.79%) SoapUI
5 6 (10.53%) JUnit
6 5 (8.77%) Protractor
6 5 (8.77%) Visual Studio
6 5 (8.77%) WebDriver
7 3 (5.26%) JIRA
7 3 (5.26%) Pylint
7 3 (5.26%) Team Foundation Server
7 3 (5.26%) Visual Studio Team System
8 2 (3.51%) Jenkins
8 2 (3.51%) MbUnit
8 2 (3.51%) Mercurial
8 2 (3.51%) MSTest
8 2 (3.51%) NUnit
8 2 (3.51%) PHPUnit
8 2 (3.51%) TeamCity
General
1 6 (10.53%) Finance
2 3 (5.26%) Retail
3 2 (3.51%) Retail Finance
Job Titles
1 39 (68.42%) Developer
2 14 (24.56%) .NET Developer
3 12 (21.05%) Software Developer
4 11 (19.30%) C# .NET Developer
4 11 (19.30%) C# Developer
5 9 (15.79%) Python Developer
6 8 (14.04%) .NET Software Developer
6 8 (14.04%) C# Software Developer
6 8 (14.04%) Java Engineer
6 8 (14.04%) QA Engineer
6 8 (14.04%) Senior Developer
7 6 (10.53%) PHP Developer
8 5 (8.77%) ASP.NET MVC Developer
8 5 (8.77%) Automation Engineer
8 5 (8.77%) Principal Developer
8 5 (8.77%) QA Automation Engineer
9 4 (7.02%) Tester
10 3 (5.26%) QA Leader
10 3 (5.26%) Senior Python Developer
10 3 (5.26%) WCF Developer
Libraries, Frameworks & Software Standards
1 20 (35.09%) .NET
2 12 (21.05%) .NET Framework
2 12 (21.05%) AngularJS
2 12 (21.05%) REST
2 12 (21.05%) Web Services
3 10 (17.54%) React
4 8 (14.04%) KnockoutJS
5 7 (12.28%) ASP.NET Web API
5 7 (12.28%) CSS
5 7 (12.28%) HTML
6 5 (8.77%) jQuery
6 5 (8.77%) Swagger
6 5 (8.77%) WCF
7 4 (7.02%) Django
7 4 (7.02%) Laravel
7 4 (7.02%) Spring
7 4 (7.02%) Spring Boot
8 3 (5.26%) SOAP
8 3 (5.26%) XML
8 3 (5.26%) XSLT
Miscellaneous
1 12 (21.05%) Analytical Skills
2 11 (19.30%) Analytical Mindset
2 11 (19.30%) Self-Motivation
3 8 (14.04%) Fintech
4 3 (5.26%) Greenfield Project
5 1 (1.75%) Cloud Native
5 1 (1.75%) Enterprise Software
5 1 (1.75%) Mobile App
5 1 (1.75%) Social Media
Operating Systems
1 6 (10.53%) Linux
2 3 (5.26%) Android
3 1 (1.75%) Apple iOS
3 1 (1.75%) Unix
Processes & Methodologies
1 47 (82.46%) Agile Software Development
2 33 (57.89%) Scrum
3 26 (45.61%) Test Automation
4 24 (42.11%) Unit Testing
5 23 (40.35%) BDD
6 21 (36.84%) Continuous Integration
7 16 (28.07%) SOLID
8 13 (22.81%) Microservices
8 13 (22.81%) MVC
9 11 (19.30%) OOD
10 9 (15.79%) Continuous Delivery
10 9 (15.79%) DevOps
10 9 (15.79%) Mentoring
10 9 (15.79%) Non-Functional Testing
10 9 (15.79%) Problem-Solving
10 9 (15.79%) SDET
11 8 (14.04%) Continuous Deployment
11 8 (14.04%) Decision-Making
11 8 (14.04%) OO
11 8 (14.04%) QA Automation
Programming Languages
1 26 (45.61%) C#
2 22 (38.60%) Java
3 14 (24.56%) JavaScript
4 11 (19.30%) PHP
4 11 (19.30%) Python
5 8 (14.04%) Go
6 6 (10.53%) SQL
7 3 (5.26%) C++
7 3 (5.26%) XPath
8 2 (3.51%) PHP 5
8 2 (3.51%) Ruby
8 2 (3.51%) TypeScript
9 1 (1.75%) C
9 1 (1.75%) VBA
Qualifications
1 3 (5.26%) Degree
2 1 (1.75%) SC Cleared
2 1 (1.75%) Security Cleared
Quality Assurance & Compliance
1 14 (24.56%) QA
System Software
1 5 (8.77%) Docker
2 2 (3.51%) Varnish
Systems Management
1 1 (1.75%) Kubernetes
Vendors
1 10 (17.54%) Microsoft
2 1 (1.75%) Google