Period
to 20 January 2019

The following table provides summary statistics for permanent job vacancies advertised in Hemel Hempstead 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 January 2019 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Hertfordshire > Hemel Hempstead
6 months to
20 Jan 2019
Same period 2018 Same period 2017
Rank 24 15 46
Rank change year-on-year -9 +31 +1
Permanent jobs citing TDD 21 76 18
As % of all permanent IT jobs advertised in Hemel Hempstead 7.89% 18.36% 4.03%
As % of the Processes & Methodologies category 9.63% 21.59% 4.86%
Number of salaries quoted 21 66 18
Hemel Hempstead median annual salary £45,000 £52,500 £37,500
Median salary % change year-on-year -14.29% +40.00% -26.83%
10th Percentile £40,000 £28,750 £23,750
90th Percentile £51,250 £58,750 £46,250
Hertfordshire median annual salary £52,500 £50,000 £45,000
% change year-on-year +5.00% +11.11% -14.29%

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 Hemel Hempstead with a requirement for process or methodology skills.

All Process and Methodology Skills
Hemel Hempstead
Permanent vacancies with a requirement for process or methodology skills 218 352 370
As % of all permanent IT jobs advertised in Hemel Hempstead 81.95% 85.02% 82.77%
Number of salaries quoted 186 310 343
Hemel Hempstead median annual salary £42,500 £50,000 £42,500
Median salary % change year-on-year -15.00% +17.65% -5.56%
10th Percentile £25,625 £22,000 £25,650
90th Percentile £60,000 £65,000 £70,000
Hertfordshire median annual salary £50,000 £50,000 £50,000

TDD
Job Vacancy Trend in Hemel Hempstead

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

Job vacancy trend for TDD in Hemel Hempstead

TDD
Salary Trend in Hemel Hempstead

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

Salary trend for TDD in Hemel Hempstead

For the 6 months to 20 January 2019, 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 Hemel Hempstead region with a requirement for TDD.

1 20 (95.24%) Agile Software Development
1 20 (95.24%) C#
1 20 (95.24%) .NET
2 19 (90.48%) JavaScript
2 19 (90.48%) Visual Studio
3 18 (85.71%) CSS
3 18 (85.71%) Web Services
3 18 (85.71%) HTML
3 18 (85.71%) WCF
3 18 (85.71%) MVC
3 18 (85.71%) .NET Framework
3 18 (85.71%) Scrum
4 17 (80.95%) ASP.NET MVC
4 17 (80.95%) StyleCop
4 17 (80.95%) jQuery
4 17 (80.95%) Entity Framework
4 17 (80.95%) LINQ
4 17 (80.95%) NUnit
4 17 (80.95%) ASP.NET
5 2 (9.52%) Unit Testing
5 2 (9.52%) BDD
6 1 (4.76%) MSTest
6 1 (4.76%) HTML5
6 1 (4.76%) Inversion of Control
6 1 (4.76%) SOLID
6 1 (4.76%) .NET Core
6 1 (4.76%) Digital Transformation Programme
6 1 (4.76%) Self-Motivation
6 1 (4.76%) Continuous Integration
6 1 (4.76%) Team Foundation Server

TDD
Co-occurring IT Skills in Hemel Hempstead 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:

Communications & Networking
1 1 (4.76%) Internet
1 1 (4.76%) Wi-Fi
Database & Business Intelligence
1 1 (4.76%) Big Data
1 1 (4.76%) SQL Server
Development Applications
1 19 (90.48%) Visual Studio
2 17 (80.95%) NUnit
2 17 (80.95%) StyleCop
3 1 (4.76%) JIRA
3 1 (4.76%) MSTest
3 1 (4.76%) Selenium
3 1 (4.76%) SpecFlow
3 1 (4.76%) Team Foundation Server
3 1 (4.76%) WebDriver
General
1 1 (4.76%) Finance
Job Titles
1 21 (100.00%) Developer
2 20 (95.24%) .NET Developer
3 18 (85.71%) C# .NET Developer
3 18 (85.71%) C# Developer
4 17 (80.95%) ASP.NET Developer
4 17 (80.95%) C# ASP.NET Developer
5 1 (4.76%) .NET Software Developer
5 1 (4.76%) .NET Web Developer
5 1 (4.76%) C# Software Developer
5 1 (4.76%) C# Web Developer
5 1 (4.76%) Full Stack Developer
5 1 (4.76%) Software Developer
5 1 (4.76%) Test Automation Developer
5 1 (4.76%) Web Developer
Libraries, Frameworks & Software Standards
1 20 (95.24%) .NET
2 18 (85.71%) .NET Framework
2 18 (85.71%) CSS
2 18 (85.71%) HTML
2 18 (85.71%) WCF
2 18 (85.71%) Web Services
3 17 (80.95%) ASP.NET
3 17 (80.95%) ASP.NET MVC
3 17 (80.95%) Entity Framework
3 17 (80.95%) jQuery
3 17 (80.95%) LINQ
4 1 (4.76%) .NET Core
4 1 (4.76%) AngularJS
4 1 (4.76%) ASP.NET Web API
4 1 (4.76%) CSS3
4 1 (4.76%) HTML5
4 1 (4.76%) SOAP
Miscellaneous
1 1 (4.76%) Internet of Things
1 1 (4.76%) Self-Motivation
Operating Systems
1 1 (4.76%) Linux
Processes & Methodologies
1 20 (95.24%) Agile Software Development
2 18 (85.71%) MVC
2 18 (85.71%) Scrum
3 2 (9.52%) BDD
3 2 (9.52%) Unit Testing
4 1 (4.76%) API Development
4 1 (4.76%) Artificial Intelligence
4 1 (4.76%) Continuous Integration
4 1 (4.76%) CQRS
4 1 (4.76%) Digital Transformation Programme
4 1 (4.76%) Domain-Driven Design
4 1 (4.76%) Enterprise Architecture
4 1 (4.76%) Inversion of Control
4 1 (4.76%) OO
4 1 (4.76%) OOA/OOD
4 1 (4.76%) SOLID
4 1 (4.76%) Test Automation
Programming Languages
1 20 (95.24%) C#
2 19 (90.48%) JavaScript
3 1 (4.76%) Java
3 1 (4.76%) PHP
3 1 (4.76%) SQL
3 1 (4.76%) T-SQL
3 1 (4.76%) TypeScript
Vendors
1 1 (4.76%) Atlassian
1 1 (4.76%) Microsoft