The following table provides summary statistics for permanent job vacancies advertised in Hertford 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 29 March 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Hertfordshire / Hertford
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 17 8 10
Rank change year-on-year -9 +2  
Permanent jobs citing TDD 2 7 1
As % of all permanent IT jobs advertised in Hertford 3.70% 22.58% 2.78%
As % of the Processes & Methodologies category 4.88% 28.00% 3.33%
Number of salaries quoted 2 7 1
Median salary £70,000 £45,000 £40,000
Median salary % change year-on-year +55.55% +12.50%  
UK excluding London median salary £45,000 £45,000 £41,500
% change year-on-year - +8.43%  

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 Hertford with a requirement for process and methodology skills.

Process & Methodology Skills
Hertford
Permanent job vacancies with a requirement for process and methodology skills 41 25 30
As % of all permanent IT job vacancies advertised in Hertford 75.93% 80.65% 83.33%
Number of salaries quoted 41 24 22
Median salary £32,500 £52,500 £52,500
Median salary % change year-on-year -38.09% -  
90% offered a salary of more than £27,000 £32,000 £30,000
10% offered a salary of more than £70,000 £70,000 £67,500
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in Hertford

The job posting trend of jobs advertised in Hertford 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 Hertford

TDD
Salary Trend in Hertford

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

Salary trend for TDD in Hertford

For the 6 months to 29 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 Hertford region with a requirement for TDD.

1 2 (100.00%) Java
1 2 (100.00%) Web Services
1 2 (100.00%) SOA
1 2 (100.00%) Scrum
1 2 (100.00%) Agile Software Development
1 2 (100.00%) Continuous Integration
1 2 (100.00%) Amazon AWS
1 2 (100.00%) BDD
1 2 (100.00%) Jenkins
1 2 (100.00%) Line Management
2 1 (50.00%) SaaS

TDD
Co-occurring IT Skills in Hertford 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 2 (100.00%) Amazon AWS
2 1 (50.00%) SaaS
Development Applications
1 2 (100.00%) Jenkins
Job Titles
1 1 (50.00%) Development Team Leader
1 1 (50.00%) Java Development Team Leader
1 1 (50.00%) Java Team Leader
1 1 (50.00%) Team Leader
Libraries, Frameworks & Software Standards
1 2 (100.00%) Web Services
Processes & Methodologies
1 2 (100.00%) Agile Software Development
1 2 (100.00%) BDD
1 2 (100.00%) Continuous Integration
1 2 (100.00%) Line Management
1 2 (100.00%) Scrum
1 2 (100.00%) SOA
Programming Languages
1 2 (100.00%) Java