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

3 months to
23 Mar 2017
Same period 2016 Same period 2015
Test-Driven Development (TDD)
Hertfordshire / Letchworth
Rank 7 - 11
Rank change year-on-year - 0  
Permanent jobs citing TDD 25 0 3
As % of all permanent IT jobs advertised in Letchworth 28.09% - 9.38%
As % of the Processes & Methodologies category 32.05% - 12.50%
Number of salaries quoted 22 0 0
Median salary £40,000 - -
UK excluding London median salary £45,000 £45,000 £40,000
% change year-on-year - +12.50%  

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 Letchworth with a requirement for process and methodology skills.

Process & Methodology Skills
Letchworth
Permanent job vacancies with a requirement for process and methodology skills 78 37 24
As % of all permanent IT job vacancies advertised in Letchworth 87.64% 84.09% 75.00%
Number of salaries quoted 66 36 21
Median salary £40,000 £50,000 £62,500
Median salary % change year-on-year -20.00% -20.00%  
90% offered a salary of more than £34,100 £32,000 £37,100
10% offered a salary of more than £45,000 £90,000 £65,000
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in Letchworth

The job posting trend of jobs advertised in Letchworth 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 Letchworth

TDD
Salary Trend in Letchworth

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

Salary trend for TDD in Letchworth

TDD
Salary Histogram in Letchworth

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

Salary histogram for TDD in Letchworth

TDD
Top 30 Related IT Skills in Letchworth

For the 6 months to 23 March 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 Letchworth region with a requirement for TDD.

1 40 (100.00%) C#
1 40 (100.00%) ASP.NET
1 40 (100.00%) .NET
1 40 (100.00%) Scrum
1 40 (100.00%) MVC
1 40 (100.00%) Agile Software Development
1 40 (100.00%) Unit Testing
1 40 (100.00%) ASP.NET MVC
1 40 (100.00%) Team Foundation Server
1 40 (100.00%) AngularJS
2 39 (97.50%) SQL Server
2 39 (97.50%) SQL
3 38 (95.00%) ASP.NET Web API
4 32 (80.00%) Continuous Integration
5 31 (77.50%) MSTest
5 31 (77.50%) NUnit
5 31 (77.50%) JavaScript
6 23 (57.50%) MS Excel
7 19 (47.50%) ATDD
8 8 (20.00%) Entity Framework
8 8 (20.00%) SQL Server 2012
8 8 (20.00%) Protractor
8 8 (20.00%) Legal
8 8 (20.00%) .NET Framework
8 8 (20.00%) Visual Studio
9 6 (15.00%) Finance
9 6 (15.00%) Data Mapping
9 6 (15.00%) Jasmine
10 5 (12.50%) Microsoft
11 4 (10.00%) Web Development

TDD
Top Related IT Skills in Letchworth 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 23 (57.50%) MS Excel
2 3 (7.50%) MS Office
Database & Business Intelligence
1 39 (97.50%) SQL Server
2 8 (20.00%) SQL Server 2012
3 3 (7.50%) Relational Database
Development Applications
1 40 (100.00%) Team Foundation Server
2 31 (77.50%) MSTest
2 31 (77.50%) NUnit
3 8 (20.00%) Protractor
3 8 (20.00%) Visual Studio
4 6 (15.00%) Jasmine
General
1 8 (20.00%) Legal
2 6 (15.00%) Finance
Job Titles
1 40 (100.00%) Developer
2 36 (90.00%) .NET Developer
3 34 (85.00%) C# Developer
4 33 (82.50%) C# .NET Developer
5 31 (77.50%) ASP.NET MVC Developer
6 27 (67.50%) ASP.NET Developer
7 26 (65.00%) C# ASP.NET Developer
8 11 (27.50%) Agile .NET Developer
8 11 (27.50%) Agile C# Developer
8 11 (27.50%) Agile Developer
9 3 (7.50%) .NET Software Developer
9 3 (7.50%) Angular Developer
9 3 (7.50%) C# Software Developer
9 3 (7.50%) Software Developer
9 3 (7.50%) SQL Developer
10 2 (5.00%) Senior .NET Developer
10 2 (5.00%) Senior ASP.NET Developer
10 2 (5.00%) Senior C# ASP.NET Developer
10 2 (5.00%) Senior C# Developer
10 2 (5.00%) Senior Developer
Libraries, Frameworks & Software Standards
1 40 (100.00%) .NET
1 40 (100.00%) AngularJS
1 40 (100.00%) ASP.NET
1 40 (100.00%) ASP.NET MVC
2 38 (95.00%) ASP.NET Web API
3 8 (20.00%) .NET Framework
3 8 (20.00%) Entity Framework
Processes & Methodologies
1 40 (100.00%) Agile Software Development
1 40 (100.00%) MVC
1 40 (100.00%) Scrum
1 40 (100.00%) Unit Testing
2 32 (80.00%) Continuous Integration
3 19 (47.50%) ATDD
4 6 (15.00%) Data Mapping
5 4 (10.00%) Web Development
6 3 (7.50%) OWASP
7 1 (2.50%) ITIL
7 1 (2.50%) PRINCE2
Programming Languages
1 40 (100.00%) C#
2 39 (97.50%) SQL
3 31 (77.50%) JavaScript
4 3 (7.50%) VBA
Qualifications
1 1 (2.50%) Degree
1 1 (2.50%) ISEB
1 1 (2.50%) Microsoft Certification
Vendors
1 5 (12.50%) Microsoft
2 1 (2.50%) Snow
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