Period
to 17 July 2018

The following table provides summary statistics for permanent job vacancies advertised in Welwyn Garden City 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 17 July 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Hertfordshire > Welwyn Garden City
6 months to
17 Jul 2018
Same period 2017 Same period 2016
Rank 62 27 31
Rank change year-on-year -35 +4 +4
Permanent jobs citing TDD 7 8 4
As % of all permanent IT jobs advertised in Welwyn Garden City 1.58% 3.86% 2.47%
As % of the Processes & Methodologies category 1.62% 4.42% 2.61%
Number of salaries quoted 1 1 3
Welwyn Garden City median annual salary £50,000 £72,500 £95,000
Median salary % change year-on-year -31.03% -23.68% +137.50%
Hertfordshire median annual salary £50,000 £47,500 £52,500
% change year-on-year +5.26% -9.52% +5.00%

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 Welwyn Garden City with a requirement for process or methodology skills.

All Process and Methodology Skills
Welwyn Garden City
Permanent vacancies with a requirement for process or methodology skills 432 181 153
As % of all permanent IT jobs advertised in Welwyn Garden City 97.30% 87.44% 94.44%
Number of salaries quoted 128 126 131
Welwyn Garden City median annual salary £52,500 £45,000 £50,000
Median salary % change year-on-year +16.67% -10.00% +5.26%
10th Percentile £25,000 £28,250 £30,000
90th Percentile £78,250 £72,500 £70,000
Hertfordshire median annual salary £50,000 £47,500 £46,500
% change year-on-year +5.26% +2.15% +3.33%

TDD
Job Vacancy Trend in Welwyn Garden City

Job postings citing TDD as a percentage of all IT jobs advertised in Welwyn Garden City.

Job vacancy trend for TDD in Welwyn Garden City

TDD
Salary Trend in Welwyn Garden City

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

Salary trend for TDD in Welwyn Garden City

For the 6 months to 17 July 2018, IT jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the Welwyn Garden City region with a requirement for TDD.

1 7 (100.00%) SQL
1 7 (100.00%) .NET
1 7 (100.00%) MVC
1 7 (100.00%) C#
1 7 (100.00%) ASP.NET Web API
2 6 (85.71%) Docker
2 6 (85.71%) DevOps
2 6 (85.71%) AppDynamics
2 6 (85.71%) AWS CloudTrail
2 6 (85.71%) High Availability
2 6 (85.71%) Splunk
2 6 (85.71%) .NET Core
2 6 (85.71%) Push Notifications
2 6 (85.71%) Customer-Centricity
2 6 (85.71%) Runscope
2 6 (85.71%) Node.js
2 6 (85.71%) BDD
2 6 (85.71%) NoSQL
2 6 (85.71%) Amazon AWS
2 6 (85.71%) Linux
2 6 (85.71%) E-Commerce
2 6 (85.71%) Retail
3 1 (14.29%) Marketing
3 1 (14.29%) .NET Framework
3 1 (14.29%) Continuous Integration
3 1 (14.29%) RESTful
3 1 (14.29%) Microsoft Azure
3 1 (14.29%) ASP.NET
3 1 (14.29%) CSS
3 1 (14.29%) Web Services

TDD
Co-occurring IT Skills in Welwyn Garden City 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:

Cloud Services
1 6 (85.71%) Amazon AWS
1 6 (85.71%) AWS CloudTrail
1 6 (85.71%) Runscope
2 1 (14.29%) Microsoft Azure
Database & Business Intelligence
1 6 (85.71%) NoSQL
General
1 6 (85.71%) Retail
2 1 (14.29%) Marketing
Job Titles
1 6 (85.71%) Development Engineer
1 6 (85.71%) Software Development Engineer
1 6 (85.71%) Software Engineer
2 1 (14.29%) .NET Developer
2 1 (14.29%) Angular Developer
2 1 (14.29%) ASP.NET MVC Developer
2 1 (14.29%) C# .NET Developer
2 1 (14.29%) C# Developer
2 1 (14.29%) Developer
2 1 (14.29%) HTML CSS Developer
2 1 (14.29%) HTML Developer
2 1 (14.29%) JavaScript Developer
Libraries, Frameworks & Software Standards
1 7 (100.00%) .NET
1 7 (100.00%) ASP.NET Web API
2 6 (85.71%) .NET Core
2 6 (85.71%) Node.js
3 1 (14.29%) .NET Framework
3 1 (14.29%) AngularJS
3 1 (14.29%) ASP.NET
3 1 (14.29%) ASP.NET MVC
3 1 (14.29%) CSS
3 1 (14.29%) CSS3
3 1 (14.29%) Entity Framework
3 1 (14.29%) HTML
3 1 (14.29%) HTML5
3 1 (14.29%) RabbitMQ
3 1 (14.29%) REST
3 1 (14.29%) RESTful
3 1 (14.29%) Twitter Bootstrap
3 1 (14.29%) Web Services
Operating Systems
1 6 (85.71%) Linux
Processes & Methodologies
1 7 (100.00%) MVC
2 6 (85.71%) BDD
2 6 (85.71%) Customer-Centricity
2 6 (85.71%) DevOps
2 6 (85.71%) E-Commerce
2 6 (85.71%) High Availability
2 6 (85.71%) Push Notifications
3 1 (14.29%) Continuous Integration
Programming Languages
1 7 (100.00%) C#
1 7 (100.00%) SQL
2 1 (14.29%) JavaScript
System Software
1 6 (85.71%) Docker
Vendors
1 6 (85.71%) AppDynamics
1 6 (85.71%) Splunk