The following table provides summary statistics for permanent job vacancies advertised in Rickmansworth 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 23 April 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Hertfordshire / Rickmansworth
3 months to
23 Apr 2017
Same period 2016 Same period 2015
Rank 15 8 22
Rank change year-on-year -7 +14  
Permanent jobs citing TDD 4 13 2
As % of all permanent IT jobs advertised in Rickmansworth 8.33% 19.12% 2.47%
As % of the Processes & Methodologies category 9.09% 19.40% 2.78%
Number of salaries quoted 4 13 2
Median salary £67,500 £42,500 £68,500
Median salary % change year-on-year +58.82% -37.95%  
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 Rickmansworth with a requirement for process and methodology skills.

Process & Methodology Skills
Rickmansworth
Permanent job vacancies with a requirement for process and methodology skills 44 67 72
As % of all permanent IT job vacancies advertised in Rickmansworth 91.67% 98.53% 88.89%
Number of salaries quoted 43 65 66
Median salary £60,000 £60,000 £60,000
90% offered a salary of more than £40,000 £42,500 £33,000
10% offered a salary of more than £75,000 £68,500 £70,000
UK excluding London median salary £45,000 £45,000 £44,000
% change year-on-year - +2.27%  

TDD
Job Vacancy Trend in Rickmansworth

The job posting trend of jobs advertised in Rickmansworth 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 Rickmansworth

TDD
Salary Trend in Rickmansworth

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

Salary trend for TDD in Rickmansworth

TDD
Salary Histogram in Rickmansworth

The salary distribution of IT jobs citing TDD in Rickmansworth over the 3 months to 23 April 2017.

Salary histogram for TDD in Rickmansworth

For the 6 months to 23 April 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 Rickmansworth region with a requirement for TDD.

1 13 (100.00%) Agile Software Development
2 10 (76.92%) Java
3 7 (53.85%) Erlang
3 7 (53.85%) Scrum
4 6 (46.15%) Finance
5 5 (38.46%) Spring
5 5 (38.46%) BDD
6 3 (23.08%) Unit Testing
6 3 (23.08%) JIRA
6 3 (23.08%) QA
6 3 (23.08%) Team Foundation Server
6 3 (23.08%) SDLC
6 3 (23.08%) JSF
6 3 (23.08%) Business Analysis
6 3 (23.08%) Ajax
6 3 (23.08%) Hibernate
6 3 (23.08%) Subversion
6 3 (23.08%) Microsoft
6 3 (23.08%) PL/SQL
6 3 (23.08%) SQL
6 3 (23.08%) J2EE
6 3 (23.08%) Oracle
6 3 (23.08%) SQL Server
6 3 (23.08%) Microsoft Office
7 2 (15.38%) CSS
7 2 (15.38%) XML
7 2 (15.38%) OOP
7 2 (15.38%) Python
7 2 (15.38%) OOD
7 2 (15.38%) IBM

TDD
Co-occurring IT Skills in Rickmansworth 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:

Applications
1 3 (23.08%) Microsoft Office
Database & Business Intelligence
1 3 (23.08%) SQL Server
Development Applications
1 3 (23.08%) JIRA
1 3 (23.08%) Subversion
1 3 (23.08%) Team Foundation Server
General
1 6 (46.15%) Finance
Job Titles
1 8 (61.54%) Developer
1 8 (61.54%) Java Developer
2 5 (38.46%) Erlang Developer
3 3 (23.08%) Analyst
3 3 (23.08%) Business Analyst
3 3 (23.08%) Finance Business Analyst
3 3 (23.08%) Financial Analyst
3 3 (23.08%) Financial Business Analyst
3 3 (23.08%) Senior Developer
3 3 (23.08%) Senior Java Developer
4 2 (15.38%) Technical Leader
5 1 (7.69%) Agile Business Analyst
5 1 (7.69%) Lead Developer
5 1 (7.69%) Lead Java Developer
Libraries, Frameworks & Software Standards
1 5 (38.46%) Spring
2 3 (23.08%) Ajax
2 3 (23.08%) Hibernate
2 3 (23.08%) J2EE
2 3 (23.08%) JSF
3 2 (15.38%) Apache Camel
3 2 (15.38%) CSS
3 2 (15.38%) HTML
3 2 (15.38%) Java EE
3 2 (15.38%) Java SE
3 2 (15.38%) jQuery
3 2 (15.38%) Middleware
3 2 (15.38%) RabbitMQ
3 2 (15.38%) XML
Processes & Methodologies
1 13 (100.00%) Agile Software Development
2 7 (53.85%) Scrum
3 5 (38.46%) BDD
4 3 (23.08%) Business Analysis
4 3 (23.08%) SDLC
4 3 (23.08%) Unit Testing
5 2 (15.38%) Continuous Integration
5 2 (15.38%) Enterprise Architecture
5 2 (15.38%) Functional Programming
5 2 (15.38%) High Availability
5 2 (15.38%) OOD
5 2 (15.38%) OOP
6 1 (7.69%) Line Management
Programming Languages
1 10 (76.92%) Java
2 7 (53.85%) Erlang
3 3 (23.08%) PL/SQL
3 3 (23.08%) SQL
4 2 (15.38%) JavaScript
4 2 (15.38%) Perl
4 2 (15.38%) Python
Quality Assurance & Compliance
1 3 (23.08%) QA
Vendors
1 3 (23.08%) Microsoft
1 3 (23.08%) Oracle
2 2 (15.38%) IBM