The following table provides summary statistics for permanent job vacancies advertised in Brentwood 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 29 March 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Essex / Brentwood
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 21 38 42
Rank change year-on-year +17 +4  
Permanent jobs citing TDD 3 1 1
As % of all permanent IT jobs advertised in Brentwood 4.23% 0.49% 0.42%
As % of the Processes & Methodologies category 5.17% 0.54% 0.45%
Number of salaries quoted 2 0 0
Median salary £51,250 - -
UK excluding London median salary £45,000 £45,000 £41,500
% change year-on-year - +8.43%  

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 Brentwood with a requirement for process and methodology skills.

Process & Methodology Skills
Brentwood
Permanent job vacancies with a requirement for process and methodology skills 58 184 224
As % of all permanent IT job vacancies advertised in Brentwood 81.69% 90.20% 94.51%
Number of salaries quoted 32 94 135
Median salary £70,000 £82,500 £50,000
Median salary % change year-on-year -15.15% +65.00%  
90% offered a salary of more than £42,500 £32,500 £35,000
10% offered a salary of more than £85,000 £82,500 £100,000
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in Brentwood

The job posting trend of jobs advertised in Brentwood 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 Brentwood

TDD
Salary Trend in Brentwood

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

Salary trend for TDD in Brentwood

For the 6 months to 29 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 Brentwood region with a requirement for TDD.

1 7 (100.00%) Agile Software Development
2 6 (85.71%) MVC
2 6 (85.71%) HTML
2 6 (85.71%) JavaScript
2 6 (85.71%) RESTful
3 4 (57.14%) Core Animation
3 4 (57.14%) Animation
3 4 (57.14%) JSON
3 4 (57.14%) Android
3 4 (57.14%) iPhone
3 4 (57.14%) iPhone SDK
3 4 (57.14%) Progressive Enhancement
3 4 (57.14%) Apple iOS
3 4 (57.14%) Responsive Web Design
3 4 (57.14%) GitHub
3 4 (57.14%) iOS Development
3 4 (57.14%) iOS SDK
3 4 (57.14%) PHP
3 4 (57.14%) MySQL
3 4 (57.14%) C++
3 4 (57.14%) XML
3 4 (57.14%) Unix
3 4 (57.14%) OOA/OOD
3 4 (57.14%) OOD
3 4 (57.14%) Cocoa
3 4 (57.14%) Xcode
3 4 (57.14%) Objective-C
3 4 (57.14%) Pair Programming
3 4 (57.14%) Apple Swift
3 4 (57.14%) Translating Business Requirements

TDD
Co-occurring IT Skills in Brentwood 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:

Cloud Services
1 4 (57.14%) GitHub
2 2 (28.57%) Amazon AWS
2 2 (28.57%) Cloud Computing
2 2 (28.57%) Microsoft Azure
Database & Business Intelligence
1 4 (57.14%) MySQL
2 2 (28.57%) SQL Server
3 1 (14.29%) Data Warehouse
3 1 (14.29%) SQL Server Integration Services
3 1 (14.29%) SQL Server Reporting Services
Development Applications
1 4 (57.14%) Xcode
2 3 (42.86%) Team Foundation Server
3 2 (28.57%) Git (software)
4 1 (14.29%) Subversion
General
1 1 (14.29%) Finance
Job Titles
1 7 (100.00%) Developer
2 4 (57.14%) iOS Developer
3 2 (28.57%) .NET Developer
3 2 (28.57%) Agile .NET Developer
3 2 (28.57%) Agile Developer
3 2 (28.57%) Senior Developer
4 1 (14.29%) Senior .NET Developer
4 1 (14.29%) Senior Agile Developer
4 1 (14.29%) Senior SQL Developer
4 1 (14.29%) SQL Developer
Libraries, Frameworks & Software Standards
1 6 (85.71%) HTML
1 6 (85.71%) RESTful
2 4 (57.14%) Cocoa
2 4 (57.14%) Core Animation
2 4 (57.14%) Core Data
2 4 (57.14%) iOS SDK
2 4 (57.14%) iPhone SDK
2 4 (57.14%) JSON
2 4 (57.14%) XML
3 3 (42.86%) .NET
3 3 (42.86%) .NET Framework
4 2 (28.57%) AngularJS
4 2 (28.57%) ASP.NET
4 2 (28.57%) ASP.NET MVC
4 2 (28.57%) ASP.NET Web API
4 2 (28.57%) CSS
4 2 (28.57%) Entity Framework
4 2 (28.57%) NHibernate
4 2 (28.57%) Node.js
4 2 (28.57%) Twitter Bootstrap
Miscellaneous
1 4 (57.14%) Animation
1 4 (57.14%) iPhone
2 1 (14.29%) Analytical Skills
Operating Systems
1 4 (57.14%) Android
1 4 (57.14%) Apple iOS
1 4 (57.14%) Unix
Processes & Methodologies
1 7 (100.00%) Agile Software Development
2 6 (85.71%) MVC
3 4 (57.14%) iOS Development
3 4 (57.14%) OOA/OOD
3 4 (57.14%) OOD
3 4 (57.14%) Pair Programming
3 4 (57.14%) Progressive Enhancement
3 4 (57.14%) Push Notifications
3 4 (57.14%) Responsive Web Design
3 4 (57.14%) Translating Business Requirements
4 2 (28.57%) Business Development
4 2 (28.57%) Continuous Integration
4 2 (28.57%) DevOps
4 2 (28.57%) Don't repeat yourself (DRY)
4 2 (28.57%) Kanban
4 2 (28.57%) Machine Learning
4 2 (28.57%) OO
4 2 (28.57%) OOP
4 2 (28.57%) Scrum
4 2 (28.57%) SOLID
Programming Languages
1 6 (85.71%) JavaScript
2 4 (57.14%) Apple Swift
2 4 (57.14%) C++
2 4 (57.14%) Objective-C
2 4 (57.14%) PHP
3 3 (42.86%) C#
4 1 (14.29%) SQL
4 1 (14.29%) T-SQL
4 1 (14.29%) VB.NET
Qualifications
1 1 (14.29%) Degree