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

Test-Driven Development (TDD)
London > Ealing
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 8 6 2
Rank change year-on-year -2 -4  
Permanent jobs citing TDD 2 25 47
As % of all permanent IT jobs advertised in Ealing 7.41% 45.45% 50.00%
As % of the Processes & Methodologies category 8.70% 46.30% 50.54%
Number of salaries quoted 2 25 38
Ealing median annual salary £87,500 £67,500 £55,000
Median salary % change year-on-year +29.62% +22.72%  
10th Percentile £66,750 £52,500 £39,250
90th Percentile £110,250 £73,750 £70,000
London median annual salary £62,500 £60,000 £55,000
% change year-on-year +4.16% +9.09%  

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 Ealing with a requirement for process and methodology skills.

Process & Methodology Skills
Ealing
Permanent job vacancies with a requirement for process and methodology skills 23 54 93
As % of all permanent IT job vacancies advertised in Ealing 85.19% 98.18% 98.94%
Number of salaries quoted 140 294 382
Ealing median annual salary £40,000 £67,500 £55,000
Median salary % change year-on-year -40.74% +22.72%  
10th Percentile £36,250 £52,500 £40,000
90th Percentile £67,500 £70,000 £85,000
London median annual salary £60,500 £60,000 £57,500
% change year-on-year +0.83% +4.34%  

TDD
Job Vacancy Trend in Ealing

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

Job vacancy trend for TDD in Ealing

TDD
Salary Trend in Ealing

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

Salary trend for TDD in Ealing

TDD
Salary Histogram in Ealing

The salary distribution of IT jobs citing TDD in Ealing over the 3 months to 29 June 2017.

Salary histogram for TDD in Ealing

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

1 2 (100.00%) BDD
2 1 (50.00%) NoSQL
2 1 (50.00%) RabbitMQ
2 1 (50.00%) Node.js
2 1 (50.00%) REST
2 1 (50.00%) CSS3
2 1 (50.00%) Redis
2 1 (50.00%) ATDD
2 1 (50.00%) Responsive Web Design
2 1 (50.00%) AngularJS
2 1 (50.00%) NancyFx
2 1 (50.00%) Grunt
2 1 (50.00%) Sinon.JS
2 1 (50.00%) TypeScript
2 1 (50.00%) Relational Database
2 1 (50.00%) Docker
2 1 (50.00%) React
2 1 (50.00%) Continuous Delivery
2 1 (50.00%) webpack
2 1 (50.00%) gulp
2 1 (50.00%) React Native
2 1 (50.00%) ES6
2 1 (50.00%) Front End Development
2 1 (50.00%) Angular 2
2 1 (50.00%) Chai
2 1 (50.00%) Redux
2 1 (50.00%) C#
2 1 (50.00%) HTML
2 1 (50.00%) Java
2 1 (50.00%) SQL

TDD
Co-occurring IT Skills in Ealing 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 1 (50.00%) Amazon AWS
1 1 (50.00%) Microsoft Azure
Database & Business Intelligence
1 1 (50.00%) NoSQL
1 1 (50.00%) RDBMS
1 1 (50.00%) Redis
1 1 (50.00%) Relational Database
1 1 (50.00%) SQL Server
Development Applications
1 1 (50.00%) Grunt
1 1 (50.00%) gulp
1 1 (50.00%) Mocha
1 1 (50.00%) Sinon.JS
1 1 (50.00%) webpack
Job Titles
1 1 (50.00%) Architect
1 1 (50.00%) Developer
1 1 (50.00%) Senior Developer
1 1 (50.00%) Senior Web Developer
1 1 (50.00%) Solutions Architect
1 1 (50.00%) Web Developer
Libraries, Frameworks & Software Standards
1 1 (50.00%) Angular 2
1 1 (50.00%) AngularJS
1 1 (50.00%) Chai
1 1 (50.00%) CSS
1 1 (50.00%) CSS3
1 1 (50.00%) GWT
1 1 (50.00%) Hibernate
1 1 (50.00%) HTML
1 1 (50.00%) HTML5
1 1 (50.00%) NancyFx
1 1 (50.00%) Node.js
1 1 (50.00%) RabbitMQ
1 1 (50.00%) React
1 1 (50.00%) React Native
1 1 (50.00%) Redux
1 1 (50.00%) REST
1 1 (50.00%) SOAP
Miscellaneous
1 1 (50.00%) Computer Science
Processes & Methodologies
1 2 (100.00%) BDD
2 1 (50.00%) Agile Software Development
2 1 (50.00%) ATDD
2 1 (50.00%) Business Performance Management
2 1 (50.00%) Continuous Delivery
2 1 (50.00%) Continuous Integration
2 1 (50.00%) Enterprise Architecture
2 1 (50.00%) Front End Development
2 1 (50.00%) Kanban
2 1 (50.00%) Mathematics
2 1 (50.00%) OO
2 1 (50.00%) Performance Management
2 1 (50.00%) Physics
2 1 (50.00%) Responsive Web Design
2 1 (50.00%) Scrum
2 1 (50.00%) Test Automation
2 1 (50.00%) Web Development
Programming Languages
1 1 (50.00%) C#
1 1 (50.00%) ES6
1 1 (50.00%) Java
1 1 (50.00%) Python
1 1 (50.00%) SQL
1 1 (50.00%) TypeScript
Qualifications
1 1 (50.00%) Degree
System Software
1 1 (50.00%) Docker
Vendors
1 1 (50.00%) Oracle