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

Test-Driven Development (TDD)
London / Chiswick
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 19 14 -
Rank change year-on-year -5 -  
Permanent jobs citing TDD 5 2 0
As % of all permanent IT jobs advertised in Chiswick 7.14% 5.00% -
As % of the Processes & Methodologies category 7.81% 5.26% -
Number of salaries quoted 5 1 0
Median salary £55,000 £80,000 -
Median salary % change year-on-year -31.25% -  
UK excluding London median salary £45,000 £44,000 £42,500
% change year-on-year +2.27% +3.52%  

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 Chiswick with a requirement for process and methodology skills.

Process & Methodology Skills
Chiswick
Permanent job vacancies with a requirement for process and methodology skills 64 38 59
As % of all permanent IT job vacancies advertised in Chiswick 91.43% 95.00% 95.16%
Number of salaries quoted 283 174 340
Median salary £55,000 £55,000 £55,000
90% offered a salary of more than £43,750 £47,000 £36,250
10% offered a salary of more than £72,500 £65,000 £77,500
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in Chiswick

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

Job vacancy trend for TDD in Chiswick

TDD
Salary Trend in Chiswick

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

Salary trend for TDD in Chiswick

For the 6 months to 28 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 Chiswick region with a requirement for TDD.

1 6 (100.00%) Scrum
1 6 (100.00%) Agile Software Development
1 6 (100.00%) JIRA
1 6 (100.00%) Test Automation
2 5 (83.33%) ATDD
2 5 (83.33%) Velocity
2 5 (83.33%) Continuous Integration
2 5 (83.33%) Kanban
3 1 (16.67%) Selenium
3 1 (16.67%) QA
3 1 (16.67%) ISTQB
3 1 (16.67%) Java
3 1 (16.67%) SQL
3 1 (16.67%) ISEB
3 1 (16.67%) Electronics
3 1 (16.67%) Jenkins
3 1 (16.67%) eggPlant
3 1 (16.67%) QA Automation
3 1 (16.67%) Cucumber
3 1 (16.67%) Gherkin

TDD
Co-occurring IT Skills in Chiswick 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:

Development Applications
1 6 (100.00%) JIRA
2 1 (16.67%) Cucumber
2 1 (16.67%) eggPlant
2 1 (16.67%) Jenkins
2 1 (16.67%) Selenium
General
1 1 (16.67%) Electronics
Job Titles
1 5 (83.33%) Agile Scrum Master
1 5 (83.33%) Scrum Master
2 1 (16.67%) QA Automation Engineer
2 1 (16.67%) QA Engineer
2 1 (16.67%) QA Test Engineer
2 1 (16.67%) Senior QA Engineer
2 1 (16.67%) Senior Test Automation Engineer
2 1 (16.67%) Senior Test Engineer
2 1 (16.67%) Test Automation Engineer
2 1 (16.67%) Test Engineer
Libraries, Frameworks & Software Standards
1 5 (83.33%) Velocity
2 1 (16.67%) Gherkin
Processes & Methodologies
1 6 (100.00%) Agile Software Development
1 6 (100.00%) Scrum
1 6 (100.00%) Test Automation
2 5 (83.33%) ATDD
2 5 (83.33%) Continuous Integration
2 5 (83.33%) Kanban
3 1 (16.67%) QA Automation
Programming Languages
1 1 (16.67%) Java
1 1 (16.67%) SQL
Qualifications
1 1 (16.67%) ISEB
1 1 (16.67%) ISTQB
Quality Assurance & Compliance
1 1 (16.67%) QA