Period
to 21 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Preston 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 21 November 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Lancashire > Preston
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 15 27 16
Rank change year-on-year +12 -11 +30
Permanent jobs citing TDD 38 16 26
As % of all permanent IT jobs advertised in Preston 15.14% 7.14% 13.07%
As % of the Processes & Methodologies category 16.81% 8.74% 14.69%
Number of salaries quoted 36 16 24
Preston median annual salary £35,000 £30,000 £40,000
Median salary % change year-on-year +16.67% -25.00% -33.33%
10th Percentile £31,250 £24,000 £35,000
90th Percentile £45,000 £41,250 £45,000
Lancashire median annual salary £35,000 £35,000 £40,000
% change year-on-year - -12.50% -

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 Preston with a requirement for process or methodology skills.

All Process and Methodology Skills
Preston
Permanent vacancies with a requirement for process or methodology skills 226 183 177
As % of all permanent IT jobs advertised in Preston 90.04% 81.70% 88.94%
Number of salaries quoted 180 173 158
Preston median annual salary £35,000 £36,500 £37,500
Median salary % change year-on-year -4.11% -2.67% +11.94%
10th Percentile £23,750 £22,771 £22,375
90th Percentile £50,125 £53,750 £51,250
Lancashire median annual salary £35,000 £37,500 £35,000
% change year-on-year -6.67% +7.14% -

TDD
Job Vacancy Trend in Preston

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

Job vacancy trend for TDD in Preston

TDD
Salary Trend in Preston

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

Salary trend for TDD in Preston

TDD
Salary Histogram in Preston

The salary distribution of IT jobs citing TDD in Preston over the 6 months to 21 November 2017.

Salary histogram for TDD in Preston

For the 6 months to 21 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 Preston region with a requirement for TDD.

1 38 (100.00%) C#
2 36 (94.74%) .NET
2 36 (94.74%) ASP.NET
2 36 (94.74%) MVC
2 36 (94.74%) ASP.NET MVC
3 35 (92.11%) .NET Framework
3 35 (92.11%) SQL Server
3 35 (92.11%) Entity Framework
4 21 (55.26%) BDD
5 20 (52.63%) JavaScript
5 20 (52.63%) Agile Software Development
6 19 (50.00%) NoSQL
6 19 (50.00%) RESTful
6 19 (50.00%) Git (software)
6 19 (50.00%) WCF
6 19 (50.00%) Ruby
6 19 (50.00%) Games
6 19 (50.00%) Node.js
6 19 (50.00%) KnockoutJS
6 19 (50.00%) Web Application Development
6 19 (50.00%) AngularJS
6 19 (50.00%) Twitter Bootstrap
6 19 (50.00%) ASP.NET Web API
6 19 (50.00%) SQL Server 2016
6 19 (50.00%) ASP.NET MVC 5
6 19 (50.00%) Code First Entity Framework
7 16 (42.11%) Workflow
7 16 (42.11%) SQL
7 16 (42.11%) Windows
7 16 (42.11%) Unit Testing

TDD
Co-occurring IT Skills in Preston 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:

Application Platforms
1 1 (2.63%) IIS
Database & Business Intelligence
1 35 (92.11%) SQL Server
2 19 (50.00%) NoSQL
2 19 (50.00%) SQL Server 2016
3 1 (2.63%) Oracle Database
Development Applications
1 19 (50.00%) Git (software)
2 2 (5.26%) Selenium
3 1 (2.63%) Team Foundation Server
3 1 (2.63%) Visual Studio
General
1 19 (50.00%) Games
2 1 (2.63%) Manufacturing
Job Titles
1 36 (94.74%) .NET Developer
1 36 (94.74%) Developer
2 17 (44.74%) ASP.NET Developer
2 17 (44.74%) C# .NET Developer
2 17 (44.74%) C# ASP.NET Developer
2 17 (44.74%) C# Developer
3 16 (42.11%) ASP.NET MVC Developer
4 2 (5.26%) Analyst
4 2 (5.26%) Automation Test Analyst
4 2 (5.26%) Test Analyst
Libraries, Frameworks & Software Standards
1 36 (94.74%) .NET
1 36 (94.74%) ASP.NET
1 36 (94.74%) ASP.NET MVC
2 35 (92.11%) .NET Framework
2 35 (92.11%) Entity Framework
3 19 (50.00%) AngularJS
3 19 (50.00%) ASP.NET MVC 5
3 19 (50.00%) ASP.NET Web API
3 19 (50.00%) Code First Entity Framework
3 19 (50.00%) KnockoutJS
3 19 (50.00%) Node.js
3 19 (50.00%) RESTful
3 19 (50.00%) Twitter Bootstrap
3 19 (50.00%) WCF
4 16 (42.11%) ASP.NET Web Forms
4 16 (42.11%) LINQ
Miscellaneous
1 1 (2.63%) Analytical Skills
Operating Systems
1 16 (42.11%) Windows
Processes & Methodologies
1 36 (94.74%) MVC
2 21 (55.26%) BDD
3 20 (52.63%) Agile Software Development
4 19 (50.00%) Web Application Development
5 16 (42.11%) Unit Testing
5 16 (42.11%) Web Development
5 16 (42.11%) Workflow
6 2 (5.26%) Test Automation
7 1 (2.63%) Data Analysis
7 1 (2.63%) Logistics
Programming Languages
1 38 (100.00%) C#
2 20 (52.63%) JavaScript
3 19 (50.00%) Ruby
4 16 (42.11%) SQL
Vendors
1 1 (2.63%) Oracle