Period
to 11 December 2018

The following table provides summary statistics for contract job vacancies advertised in Wales with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 11 December 2018 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
UK > Wales
6 months to
11 Dec 2018
Same period 2017 Same period 2016
Rank 38 60 11
Rank change year-on-year +22 -49 +11
Contract jobs citing TDD 89 37 154
As % of all contract IT jobs advertised in Wales 5.11% 3.03% 10.95%
As % of the Processes & Methodologies category 5.84% 3.65% 12.76%
Number of daily rates quoted 79 27 119
Wales median daily rate £425 £425 £475
Median daily rate % change year-on-year - -10.53% +26.67%
10th Percentile £322 £345 £356
90th Percentile £503 £483 £575
UK median daily rate £500 £488 £450
% change year-on-year +2.56% +8.33% +2.27%
Number of hourly rates quoted 0 0 0
Wales median hourly rate - - -
UK median hourly rate £42.50 £45.00 £42.50
% change year-on-year -5.56% +5.88% +9.68%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Wales with a requirement for process or methodology skills.

All Process and Methodology Skills
Wales
Contract vacancies with a requirement for process or methodology skills 1,523 1,015 1,207
As % of all contract IT jobs advertised in Wales 87.53% 83.06% 85.79%
Number of daily rates quoted 1,050 684 855
Wales median daily rate £425 £390 £400
Median daily rate % change year-on-year +8.97% -2.50% +14.29%
10th Percentile £288 £175 £211
90th Percentile £588 £550 £562
UK median daily rate £463 £450 £425
% change year-on-year +2.78% +5.88% +2.41%
Number of hourly rates quoted 51 35 50
Wales median hourly rate £15.00 £18.50 £18.00
Median hourly rate % change year-on-year -18.92% +2.78% +12.50%
10th Percentile £10.75 £13.00 £10.73
90th Percentile £37.50 £45.70 £62.65
UK median hourly rate £22.00 £24.00 £22.50
% change year-on-year -8.33% +6.67% +2.27%

TDD
Job Vacancy Trend in Wales

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

Job vacancy trend for TDD in Wales

TDD
Contractor Daily Rate Trend in Wales

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Wales.

Contractor daily rate trend for TDD in Wales

TDD
Contractor Daily Rate Histogram in Wales

The daily rate distribution of IT jobs citing TDD in Wales over the 6 months to 11 December 2018.

Contractor daily rate histogram for TDD in Wales

TDD
Contractor Hourly Rate Trend in Wales

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Wales.

Contractor hourly rate trend for TDD in Wales

TDD
Contract Job Locations in Wales

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Wales region over the 6 months to 11 December 2018. 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
South Wales +18 85 £425 - 24
West Wales +2 2 £388 +3.33% 2
TDD
UK

For the 6 months to 11 December 2018, IT contractor 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 contract job ads across the Wales region with a requirement for TDD.

1 71 (79.78%) Agile Software Development
2 66 (74.16%) Test Automation
3 59 (66.29%) Scrum
4 41 (46.07%) Continuous Integration
5 36 (40.45%) BDD
6 30 (33.71%) Software Engineering
6 30 (33.71%) C#
7 28 (31.46%) Web Services
8 27 (30.34%) SOA
8 27 (30.34%) PHP
8 27 (30.34%) Project Management
8 27 (30.34%) Kanban
8 27 (30.34%) Technical Leadership
9 26 (29.21%) Jenkins
9 26 (29.21%) .NET
9 26 (29.21%) Data Warehouse
10 25 (28.09%) Finance
11 22 (24.72%) Zend
11 22 (24.72%) Java
11 22 (24.72%) Relational Database
12 20 (22.47%) Customer-Centric Approach
12 20 (22.47%) Customer-Centricity
13 19 (21.35%) Selenium
14 17 (19.10%) Cucumber
15 16 (17.98%) SQL
16 15 (16.85%) Confluence
16 15 (16.85%) Performance Testing
16 15 (16.85%) JIRA
16 15 (16.85%) API Testing
16 15 (16.85%) REST

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 15 (16.85%) Confluence
2 2 (2.25%) Apache ServiceMix
2 2 (2.25%) BizTalk Server
2 2 (2.25%) JBoss
2 2 (2.25%) Mule
2 2 (2.25%) Mule ESB
3 1 (1.12%) Anypoint
3 1 (1.12%) IIS
Cloud Services
1 13 (14.61%) Amazon AWS
2 7 (7.87%) Microsoft Azure
3 1 (1.12%) GitHub
Communications & Networking
1 12 (13.48%) VPN
2 2 (2.25%) HTTP
Database & Business Intelligence
1 26 (29.21%) Data Warehouse
2 22 (24.72%) Relational Database
3 12 (13.48%) PostgreSQL
4 10 (11.24%) SQL Server
5 6 (6.74%) Big Data
5 6 (6.74%) HPCC
6 5 (5.62%) SQL Server 2012
7 2 (2.25%) NoSQL
8 1 (1.12%) Azure SQL Database
8 1 (1.12%) Couchbase
8 1 (1.12%) MongoDB
8 1 (1.12%) SQL Server 2008
Development Applications
1 26 (29.21%) Jenkins
2 19 (21.35%) Selenium
3 17 (19.10%) Cucumber
4 15 (16.85%) JIRA
5 14 (15.73%) Git (software)
5 14 (15.73%) Visual Studio
6 13 (14.61%) SoapUI
6 13 (14.61%) WebDriver
7 8 (8.99%) Team Foundation Server
8 7 (7.87%) Mercurial
8 7 (7.87%) TeamCity
9 3 (3.37%) JUnit
9 3 (3.37%) MbUnit
9 3 (3.37%) MSTest
9 3 (3.37%) NCrunch
9 3 (3.37%) NUnit
9 3 (3.37%) ReSharper
9 3 (3.37%) TestNG
10 2 (2.25%) Appium
10 2 (2.25%) SpecFlow
General
1 25 (28.09%) Finance
2 7 (7.87%) Publishing
3 5 (5.62%) Banking
4 4 (4.49%) Games
5 1 (1.12%) Back Office
5 1 (1.12%) Legal
Job Titles
1 58 (65.17%) Developer
2 24 (26.97%) PHP Developer
3 16 (17.98%) .NET Developer
3 16 (17.98%) Software Engineer
4 15 (16.85%) Test Engineer
5 14 (15.73%) PHP Software Engineer
6 13 (14.61%) Agile Developer
6 13 (14.61%) Test Automation Engineer
7 12 (13.48%) C# Developer
7 12 (13.48%) Software Developer
8 11 (12.36%) Developer/Software Engineer
8 11 (12.36%) PHP Zend Developer
9 8 (8.99%) C# .NET Developer
10 6 (6.74%) Scrum Master
10 6 (6.74%) Senior Developer
11 4 (4.49%) ASP.NET Developer
11 4 (4.49%) C# ASP.NET Developer
11 4 (4.49%) Developer in Test
11 4 (4.49%) Java Developer
12 3 (3.37%) ASP.NET MVC Developer
Libraries, Frameworks & Software Standards
1 28 (31.46%) Web Services
2 26 (29.21%) .NET
3 15 (16.85%) REST
4 13 (14.61%) ASP.NET
5 12 (13.48%) .NET Framework
5 12 (13.48%) SOAP
6 11 (12.36%) Laravel
7 10 (11.24%) RESTful
8 9 (10.11%) AngularJS
8 9 (10.11%) ASP.NET Web API
9 6 (6.74%) HTML
9 6 (6.74%) React
9 6 (6.74%) WCF
10 5 (5.62%) JSON
11 4 (4.49%) CSS
11 4 (4.49%) Entity Framework
11 4 (4.49%) Symfony
11 4 (4.49%) Velocity
12 3 (3.37%) Castle Windsor
12 3 (3.37%) Razor View Engine
Miscellaneous
1 11 (12.36%) Greenfield Project
2 3 (3.37%) Self-Motivation
2 3 (3.37%) User Experience
3 2 (2.25%) Fintech
3 2 (2.25%) Linux Command Line
4 1 (1.12%) Management Information System
4 1 (1.12%) Mobile App
Operating Systems
1 2 (2.25%) Unix
2 1 (1.12%) Android
Processes & Methodologies
1 71 (79.78%) Agile Software Development
2 66 (74.16%) Test Automation
3 59 (66.29%) Scrum
4 41 (46.07%) Continuous Integration
5 36 (40.45%) BDD
6 30 (33.71%) Software Engineering
7 27 (30.34%) Kanban
7 27 (30.34%) Project Management
7 27 (30.34%) SOA
7 27 (30.34%) Technical Leadership
8 20 (22.47%) Customer-Centric Approach
8 20 (22.47%) Customer-Centricity
9 15 (16.85%) API Testing
9 15 (16.85%) Performance Testing
10 14 (15.73%) Continuous Delivery
10 14 (15.73%) MVC
10 14 (15.73%) OO
11 12 (13.48%) ATDD
12 9 (10.11%) Unit Testing
13 8 (8.99%) Functional Testing
Programming Languages
1 30 (33.71%) C#
2 27 (30.34%) PHP
3 22 (24.72%) Java
4 16 (17.98%) SQL
5 14 (15.73%) Ruby
6 12 (13.48%) Groovy
6 12 (13.48%) JavaScript
7 2 (2.25%) Java 8
7 2 (2.25%) Perl
7 2 (2.25%) TypeScript
8 1 (1.12%) ES6
8 1 (1.12%) Java 9
Qualifications
1 2 (2.25%) ISEB
1 2 (2.25%) ISTQB Foundation Certification
1 2 (2.25%) Security Cleared
2 1 (1.12%) BPSS Clearance
2 1 (1.12%) DBS Check
2 1 (1.12%) Degree
2 1 (1.12%) ISTQB
2 1 (1.12%) Master's Degree
2 1 (1.12%) SC Cleared
Quality Assurance & Compliance
1 4 (4.49%) QA
2 3 (3.37%) SLA
3 1 (1.12%) Disclosure Scotland
System Software
1 14 (15.73%) Docker
Systems Management
1 2 (2.25%) Kubernetes
2 1 (1.12%) Ansible
2 1 (1.12%) Puppet
2 1 (1.12%) Terraform
Vendors
1 22 (24.72%) Zend
2 7 (7.87%) Microsoft
3 2 (2.25%) Micro Focus
3 2 (2.25%) MuleSoft
4 1 (1.12%) Twitter