The following table provides summary statistics for permanent job vacancies advertised in Hammersmith with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 3 months to 28 March 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
London / Hammersmith
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 8 13 17
Rank change year-on-year +5 +4  
Permanent jobs citing TDD 36 11 5
As % of all permanent IT jobs advertised in Hammersmith 23.08% 13.25% 5.32%
As % of the Processes & Methodologies category 24.49% 15.07% 5.88%
Number of salaries quoted 36 11 4
Median salary £70,000 £52,500 £57,500
Median salary % change year-on-year +33.33% -8.69%  
90% offered a salary of more than £42,500 £44,000 £44,500
10% offered a salary of more than £80,000 £55,000 £60,000
UK excluding London median salary £45,000 £45,000 £40,500
% change year-on-year - +11.11%  

TDD is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Hammersmith with a requirement for process and methodology skills.

Process & Methodology Skills
Hammersmith
Permanent job vacancies with a requirement for process and methodology skills 147 73 85
As % of all permanent IT job vacancies advertised in Hammersmith 94.23% 87.95% 90.43%
Number of salaries quoted 135 56 58
Median salary £60,000 £55,000 £57,500
Median salary % change year-on-year +9.09% -4.34%  
90% offered a salary of more than £37,500 £40,000 £37,500
10% offered a salary of more than £80,000 £105,000 £65,000
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in Hammersmith

The job posting trend of jobs advertised in Hammersmith citing TDD as a proportion of all permanent or contract IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for TDD in Hammersmith

TDD
Salary Trend in Hammersmith

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

Salary trend for TDD in Hammersmith

TDD
Salary Histogram in Hammersmith

The salary distribution of IT jobs citing TDD in Hammersmith over the 3 months to 28 March 2017.

Salary histogram for TDD in Hammersmith

For the 6 months to 28 March 2017, IT jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Hammersmith region with a requirement for TDD.

1 42 (87.50%) Agile Software Development
2 26 (54.17%) Google
2 26 (54.17%) Android
2 26 (54.17%) Open Source
3 25 (52.08%) Apple iOS
3 25 (52.08%) Mobile App
3 25 (52.08%) Mobile Application Development
3 25 (52.08%) RxJava
4 17 (35.42%) Scrum
4 17 (35.42%) BDD
5 15 (31.25%) JavaScript
6 14 (29.17%) HTML
7 13 (27.08%) CSS
8 12 (25.00%) HTML5
8 12 (25.00%) RESTful
9 11 (22.92%) CSS3
9 11 (22.92%) Mentoring
10 10 (20.83%) API Development
10 10 (20.83%) Domain-Driven Design
11 9 (18.75%) Git (software)
11 9 (18.75%) jQuery
11 9 (18.75%) ASP.NET
11 9 (18.75%) C#
11 9 (18.75%) .NET
12 8 (16.67%) MySQL
12 8 (16.67%) IIS
12 8 (16.67%) ASP.NET Web API
13 7 (14.58%) Web Development
13 7 (14.58%) PHP
13 7 (14.58%) Continuous Integration

TDD
Co-occurring IT Skills in Hammersmith 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 8 (16.67%) IIS
2 4 (8.33%) CMS
2 4 (8.33%) Umbraco
2 4 (8.33%) WebSphere
3 2 (4.17%) WordPress
Applications
1 4 (8.33%) MS Excel
Cloud Services
1 2 (4.17%) Amazon AWS
1 2 (4.17%) SaaS
2 1 (2.08%) Google Play
Database & Business Intelligence
1 8 (16.67%) MySQL
2 4 (8.33%) Relational Database
2 4 (8.33%) SQL Server
2 4 (8.33%) SQL Server 2005
2 4 (8.33%) SQL Server Integration Services
Development Applications
1 9 (18.75%) Git (software)
2 7 (14.58%) PHPUnit
3 6 (12.50%) Jasmine
4 4 (8.33%) Mercurial
4 4 (8.33%) TeamCity
4 4 (8.33%) Visual Studio
5 3 (6.25%) Grunt
6 2 (4.17%) gulp
6 2 (4.17%) Team Foundation Server
6 2 (4.17%) Visual Studio Team System
7 1 (2.08%) Bower
7 1 (2.08%) FindBugs
7 1 (2.08%) Gradle
7 1 (2.08%) JUnit
7 1 (2.08%) Maven
7 1 (2.08%) Vagrant
General
1 1 (2.08%) Advertising
1 1 (2.08%) Pharmaceutical
1 1 (2.08%) Publishing
Job Titles
1 22 (45.83%) Developer
2 19 (39.58%) Team Leader
3 8 (16.67%) C# Developer
3 8 (16.67%) Senior Developer
4 6 (12.50%) Head of Mobile
4 6 (12.50%) PHP Developer
4 6 (12.50%) Senior C# Developer
5 5 (10.42%) .NET Developer
5 5 (10.42%) Senior .NET Developer
6 4 (8.33%) C# .NET Developer
6 4 (8.33%) Senior C# .NET Developer
7 3 (6.25%) UI Developer
8 2 (4.17%) C# WCF Developer
8 2 (4.17%) Java Developer
8 2 (4.17%) Lead C# Developer
8 2 (4.17%) Lead Developer
8 2 (4.17%) WCF Developer
9 1 (2.08%) Digital Business Analyst
9 1 (2.08%) Digital Developer
9 1 (2.08%) Senior Scala Developer
Libraries, Frameworks & Software Standards
1 25 (52.08%) RxJava
2 14 (29.17%) HTML
3 13 (27.08%) CSS
4 12 (25.00%) HTML5
4 12 (25.00%) RESTful
5 11 (22.92%) CSS3
6 9 (18.75%) .NET
6 9 (18.75%) ASP.NET
6 9 (18.75%) jQuery
7 8 (16.67%) ASP.NET Web API
8 6 (12.50%) AngularJS
8 6 (12.50%) Web Services
9 5 (10.42%) .NET Framework
9 5 (10.42%) ASP.NET MVC
9 5 (10.42%) ASP.NET MVC 5
9 5 (10.42%) Entity Framework
9 5 (10.42%) JSON
9 5 (10.42%) REST
10 4 (8.33%) .NET Core
10 4 (8.33%) ASP.NET Web Forms
Miscellaneous
1 25 (52.08%) Mobile App
2 4 (8.33%) Clustering
3 2 (4.17%) Computer Science
4 1 (2.08%) Analytical Skills
4 1 (2.08%) Enterprise Software
4 1 (2.08%) User Experience
Operating Systems
1 26 (54.17%) Android
2 25 (52.08%) Apple iOS
3 1 (2.08%) Linux
3 1 (2.08%) Windows
Processes & Methodologies
1 42 (87.50%) Agile Software Development
2 26 (54.17%) Open Source
3 25 (52.08%) Mobile Application Development
4 17 (35.42%) BDD
4 17 (35.42%) Scrum
5 11 (22.92%) Mentoring
6 10 (20.83%) API Development
6 10 (20.83%) Domain-Driven Design
7 7 (14.58%) Continuous Integration
7 7 (14.58%) Dependency Injection
7 7 (14.58%) Web Development
8 6 (12.50%) Mobile First
8 6 (12.50%) MVC
9 5 (10.42%) E-Commerce
9 5 (10.42%) Multithreading
9 5 (10.42%) OOP
10 4 (8.33%) Agile Project Management
10 4 (8.33%) Inversion of Control
10 4 (8.33%) OO
10 4 (8.33%) Progressive Enhancement
Programming Languages
1 15 (31.25%) JavaScript
2 9 (18.75%) C#
3 7 (14.58%) PHP
4 6 (12.50%) SQL
5 4 (8.33%) ECMAScript
6 2 (4.17%) Java
7 1 (2.08%) Bash Shell
7 1 (2.08%) C
7 1 (2.08%) C++
7 1 (2.08%) ES6
7 1 (2.08%) Python
7 1 (2.08%) Scala
Qualifications
1 2 (4.17%) Degree
Quality Assurance & Compliance
1 2 (4.17%) QA
2 1 (2.08%) Data Quality
System Software
1 1 (2.08%) Docker
Systems Management
1 1 (2.08%) Puppet
Vendors
1 26 (54.17%) Google
2 6 (12.50%) Microsoft
3 4 (8.33%) IBM
4 1 (2.08%) Facebook