Period
to 20 July 2017

The following table provides summary statistics for permanent job vacancies advertised in Gatwick 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 20 July 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
West Sussex > Gatwick
6 months to
20 Jul 2017
Same period 2016 Same period 2015
Rank 31 37 33
Rank change year-on-year +6 -4 -10
Permanent jobs citing TDD 17 10 3
As % of all permanent IT jobs advertised in Gatwick 7.00% 3.25% 1.32%
As % of the Processes & Methodologies category 8.17% 3.73% 1.59%
Number of salaries quoted 17 15 3
Gatwick median annual salary £50,500 £45,000 £55,000
Median salary % change year-on-year +12.22% -18.18% -
West Sussex median annual salary £42,500 £42,500 £47,500
% change year-on-year - -10.53% -5.00%

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 Gatwick with a requirement for process and methodology skills.

Process & Methodology Skills
Gatwick
Permanent job vacancies with a requirement for process and methodology skills 208 268 189
As % of all permanent IT job vacancies advertised in Gatwick 85.60% 87.01% 82.89%
Number of salaries quoted 197 247 151
Gatwick median annual salary £47,500 £45,000 £42,500
Median salary % change year-on-year +5.56% +5.88% -10.53%
10th Percentile £25,950 £30,000 £29,750
90th Percentile £62,500 £61,150 £52,500
West Sussex median annual salary £43,875 £43,000 £42,500
% change year-on-year +2.03% +1.18% -

TDD
Job Vacancy Trend in Gatwick

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

Job vacancy trend for TDD in Gatwick

TDD
Salary Trend in Gatwick

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

Salary trend for TDD in Gatwick

For the 6 months to 20 July 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 Gatwick region with a requirement for TDD.

1 17 (100.00%) Agile Software Development
2 15 (88.24%) Scrum
3 10 (58.82%) C#
3 10 (58.82%) C++
3 10 (58.82%) OO
4 9 (52.94%) SOA
5 8 (47.06%) Line Management
5 8 (47.06%) Mentoring
6 7 (41.18%) React
6 7 (41.18%) SDLC
6 7 (41.18%) JSON Schema
6 7 (41.18%) Cross-Browser Compatibility
6 7 (41.18%) Ajax
6 7 (41.18%) JSON
6 7 (41.18%) Dojo
6 7 (41.18%) YUI
6 7 (41.18%) jQuery
6 7 (41.18%) Unit Testing
6 7 (41.18%) Ext JS
6 7 (41.18%) Git (software)
6 7 (41.18%) RESTful
6 7 (41.18%) HTML5
6 7 (41.18%) Waterfall
6 7 (41.18%) Hudson
6 7 (41.18%) REST
6 7 (41.18%) CSS3
6 7 (41.18%) KnockoutJS
6 7 (41.18%) Sass
6 7 (41.18%) AngularJS
6 7 (41.18%) Jenkins

TDD
Co-occurring IT Skills in Gatwick 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 7 (41.18%) Git (software)
1 7 (41.18%) Hudson
1 7 (41.18%) Jenkins
1 7 (41.18%) Subversion
Job Titles
1 8 (47.06%) C++ Team Leader
1 8 (47.06%) Team Leader
2 7 (41.18%) Developer
2 7 (41.18%) JavaScript Developer
3 2 (11.76%) C# Software Engineer
3 2 (11.76%) C++ Software Engineer
3 2 (11.76%) Software Engineer
Libraries, Frameworks & Software Standards
1 7 (41.18%) Ajax
1 7 (41.18%) AngularJS
1 7 (41.18%) CSS
1 7 (41.18%) CSS3
1 7 (41.18%) Dojo
1 7 (41.18%) Ext JS
1 7 (41.18%) HTML
1 7 (41.18%) HTML5
1 7 (41.18%) jQuery
1 7 (41.18%) JSON
1 7 (41.18%) JSON Schema
1 7 (41.18%) KnockoutJS
1 7 (41.18%) React
1 7 (41.18%) REST
1 7 (41.18%) RESTful
1 7 (41.18%) Sass
1 7 (41.18%) XHTML
1 7 (41.18%) XML
1 7 (41.18%) XSLT
1 7 (41.18%) YUI
Operating Systems
1 2 (11.76%) Windows
1 2 (11.76%) Windows 7
Processes & Methodologies
1 17 (100.00%) Agile Software Development
2 15 (88.24%) Scrum
3 10 (58.82%) OO
4 9 (52.94%) SOA
5 8 (47.06%) Line Management
5 8 (47.06%) Mentoring
6 7 (41.18%) Cross-Browser Compatibility
6 7 (41.18%) Data Transformation
6 7 (41.18%) SDLC
6 7 (41.18%) Unit Testing
6 7 (41.18%) Waterfall
7 2 (11.76%) Software Engineering
Programming Languages
1 10 (58.82%) C#
1 10 (58.82%) C++
2 7 (41.18%) Java
2 7 (41.18%) JavaScript