Period
to 22 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Surbiton 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 22 November 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 23 19 8
Rank change year-on-year -4 -11 +6
Permanent jobs citing TDD 6 4 20
As % of all permanent IT jobs advertised in Surbiton 6.45% 4.76% 19.05%
As % of the Processes & Methodologies category 6.98% 5.00% 24.69%
Number of salaries quoted 6 3 20
Surbiton median annual salary £58,750 £40,000 £47,500
Median salary % change year-on-year +46.88% -15.79% -13.64%
10th Percentile £40,000 £37,500 £33,000
90th Percentile £71,250 £62,500 £51,475
Kingston Upon Thames median annual salary £50,000 £52,500 £48,500
% change year-on-year -4.76% +8.25% -3.00%

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 Surbiton with a requirement for process or methodology skills.

All Process and Methodology Skills
Surbiton
Permanent vacancies with a requirement for process or methodology skills 86 80 81
As % of all permanent IT jobs advertised in Surbiton 92.47% 95.24% 77.14%
Number of salaries quoted 78 68 79
Surbiton median annual salary £40,000 £50,000 £46,500
Median salary % change year-on-year -20.00% +7.53% +3.33%
10th Percentile £27,125 £32,500 £25,750
90th Percentile £60,000 £58,750 £61,500
Kingston Upon Thames median annual salary £45,000 £50,000 £47,500
% change year-on-year -10.00% +5.26% +5.56%

TDD
Job Vacancy Trend in Surbiton

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

Job vacancy trend for TDD in Surbiton

TDD
Salary Trend in Surbiton

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

Salary trend for TDD in Surbiton

TDD
Salary Histogram in Surbiton

The salary distribution of IT jobs citing TDD in Surbiton over the 6 months to 22 November 2017.

Salary histogram for TDD in Surbiton

For the 6 months to 22 November 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 Surbiton region with a requirement for TDD.

1 6 (100.00%) Agile Software Development
2 5 (83.33%) .NET
2 5 (83.33%) C#
3 4 (66.67%) Banking
4 3 (50.00%) SQL
4 3 (50.00%) Telecoms
4 3 (50.00%) Finance
4 3 (50.00%) SQL Server
4 3 (50.00%) E-Commerce
4 3 (50.00%) Client/Server
4 3 (50.00%) MongoDB
4 3 (50.00%) AngularJS
4 3 (50.00%) ASP.NET Web API
5 2 (33.33%) Microservices
5 2 (33.33%) NoSQL
5 2 (33.33%) RESTful
5 2 (33.33%) Microsoft Azure
5 2 (33.33%) WCF
5 2 (33.33%) RabbitMQ
5 2 (33.33%) Node.js
5 2 (33.33%) ASP.NET
5 2 (33.33%) Law
5 2 (33.33%) MVC
5 2 (33.33%) JavaScript
5 2 (33.33%) Software Engineering
5 2 (33.33%) .NET Framework
5 2 (33.33%) Continuous Integration
5 2 (33.33%) Greenfield Project
6 1 (16.67%) Retrofit
6 1 (16.67%) Dagger

TDD
Co-occurring IT Skills in Surbiton 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 2 (33.33%) Microsoft Azure
2 1 (16.67%) Amazon AWS
Database & Business Intelligence
1 3 (50.00%) MongoDB
1 3 (50.00%) SQL Server
2 2 (33.33%) NoSQL
3 1 (16.67%) Redis
3 1 (16.67%) SQL Server 2012
3 1 (16.67%) SQL Server 2014
3 1 (16.67%) SQL Server 2016
Development Applications
1 1 (16.67%) Git (software)
1 1 (16.67%) Jenkins
1 1 (16.67%) Selenium
1 1 (16.67%) SpecFlow
1 1 (16.67%) TeamCity
General
1 4 (66.67%) Banking
2 3 (50.00%) Finance
2 3 (50.00%) Telecoms
3 2 (33.33%) Law
Job Titles
1 5 (83.33%) Developer
2 4 (66.67%) .NET Developer
3 3 (50.00%) C# .NET Developer
3 3 (50.00%) C# Developer
4 2 (33.33%) ASP.NET Developer
4 2 (33.33%) C# ASP.NET Developer
4 2 (33.33%) SQL Developer
5 1 (16.67%) Android Developer
5 1 (16.67%) ASP.NET MVC Developer
5 1 (16.67%) Azure Developer
5 1 (16.67%) Mobile Developer
5 1 (16.67%) Senior .NET Developer
5 1 (16.67%) Senior C# .NET Developer
5 1 (16.67%) Senior C# Developer
5 1 (16.67%) Senior Developer
5 1 (16.67%) Senior SQL Developer
Libraries, Frameworks & Software Standards
1 5 (83.33%) .NET
2 3 (50.00%) AngularJS
2 3 (50.00%) ASP.NET Web API
3 2 (33.33%) .NET Framework
3 2 (33.33%) ASP.NET
3 2 (33.33%) Node.js
3 2 (33.33%) RabbitMQ
3 2 (33.33%) RESTful
3 2 (33.33%) WCF
4 1 (16.67%) ASP.NET MVC
4 1 (16.67%) ASP.NET MVC 5
4 1 (16.67%) Code First Entity Framework
4 1 (16.67%) Dagger
4 1 (16.67%) Entity Framework
4 1 (16.67%) JSON
4 1 (16.67%) React
4 1 (16.67%) REST
4 1 (16.67%) Retrofit
4 1 (16.67%) RxJava
4 1 (16.67%) Web Services
Miscellaneous
1 3 (50.00%) Client/Server
2 2 (33.33%) Greenfield Project
3 1 (16.67%) Algorithms
3 1 (16.67%) Computer Science
3 1 (16.67%) Enterprise Software
3 1 (16.67%) Fintech
Operating Systems
1 1 (16.67%) Android
1 1 (16.67%) Apple iOS
1 1 (16.67%) Linux
1 1 (16.67%) Windows
Processes & Methodologies
1 6 (100.00%) Agile Software Development
2 3 (50.00%) E-Commerce
3 2 (33.33%) Continuous Integration
3 2 (33.33%) Microservices
3 2 (33.33%) MVC
3 2 (33.33%) Software Engineering
4 1 (16.67%) Android Development
4 1 (16.67%) API Testing
4 1 (16.67%) BDD
4 1 (16.67%) Continuous Delivery
4 1 (16.67%) DevOps
4 1 (16.67%) Mobile Development
4 1 (16.67%) OO
4 1 (16.67%) OOD
4 1 (16.67%) Pair Programming
4 1 (16.67%) SOA
4 1 (16.67%) Test Automation
4 1 (16.67%) Unit Testing
4 1 (16.67%) Web Application Development
Programming Languages
1 5 (83.33%) C#
2 3 (50.00%) SQL
3 2 (33.33%) JavaScript
4 1 (16.67%) F#
4 1 (16.67%) Ruby
Qualifications
1 1 (16.67%) Degree
Quality Assurance & Compliance
1 1 (16.67%) QA
System Software
1 1 (16.67%) Docker
Vendors
1 1 (16.67%) Microsoft