Period
to 20 November 2017

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

Test-Driven Development (TDD)
Hertfordshire > Stevenage
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 19 35 27
Rank change year-on-year +16 -8 +12
Permanent jobs citing TDD 24 6 13
As % of all permanent IT jobs advertised in Stevenage 10.96% 2.87% 5.94%
As % of the Processes & Methodologies category 13.79% 3.66% 6.60%
Number of salaries quoted 24 6 13
Stevenage median annual salary £45,000 £47,500 £37,500
Median salary % change year-on-year -5.26% +26.67% +25.00%
10th Percentile £35,075 £37,500 £28,000
90th Percentile £53,750 £57,500 £41,250
Hertfordshire median annual salary £47,500 £50,000 £50,000
% change year-on-year -5.00% - +5.26%

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 Stevenage with a requirement for process or methodology skills.

All Process and Methodology Skills
Stevenage
Permanent vacancies with a requirement for process or methodology skills 174 164 197
As % of all permanent IT jobs advertised in Stevenage 79.45% 78.47% 89.95%
Number of salaries quoted 108 140 163
Stevenage median annual salary £37,250 £45,000 £40,000
Median salary % change year-on-year -17.22% +12.50% +6.67%
10th Percentile £25,000 £21,238 £26,250
90th Percentile £51,250 £57,500 £55,000
Hertfordshire median annual salary £47,500 £50,000 £47,500
% change year-on-year -5.00% +5.26% +0.53%

TDD
Job Vacancy Trend in Stevenage

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

Job vacancy trend for TDD in Stevenage

TDD
Salary Trend in Stevenage

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

Salary trend for TDD in Stevenage

TDD
Salary Histogram in Stevenage

The salary distribution of IT jobs citing TDD in Stevenage over the 6 months to 20 November 2017.

Salary histogram for TDD in Stevenage

For the 6 months to 20 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 Stevenage region with a requirement for TDD.

1 23 (95.83%) C#
1 23 (95.83%) HTML
1 23 (95.83%) JavaScript
1 23 (95.83%) CSS
2 22 (91.67%) Agile Software Development
3 13 (54.17%) Extreme Programming
3 13 (54.17%) OO
3 13 (54.17%) XHTML
4 12 (50.00%) .NET
5 11 (45.83%) JSON
6 10 (41.67%) RESTful
6 10 (41.67%) BDD
6 10 (41.67%) Analytical Skills
7 9 (37.50%) SDLC
7 9 (37.50%) HTML5
7 9 (37.50%) SQL Server
7 9 (37.50%) XML
8 8 (33.33%) SOA
8 8 (33.33%) VB
8 8 (33.33%) VB.NET
8 8 (33.33%) Git (software)
8 8 (33.33%) Product Management
8 8 (33.33%) QA
8 8 (33.33%) VB6
9 7 (29.17%) Creative Thinking
10 6 (25.00%) Computer Science
10 6 (25.00%) HND
11 5 (20.83%) Scrum
11 5 (20.83%) Kindle
12 4 (16.67%) MVC

TDD
Co-occurring IT Skills in Stevenage 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 (4.17%) IIS
Cloud Services
1 1 (4.17%) Amazon AWS
1 1 (4.17%) Microsoft Azure
Database & Business Intelligence
1 9 (37.50%) SQL Server
2 1 (4.17%) MongoDB
2 1 (4.17%) MySQL
2 1 (4.17%) SQL Server Integration Services
2 1 (4.17%) SQL Server Reporting Services
Development Applications
1 8 (33.33%) Git (software)
2 1 (4.17%) Team Foundation Server
General
1 1 (4.17%) Finance
Job Titles
1 24 (100.00%) Developer
2 15 (62.50%) C# Developer
3 12 (50.00%) Senior Developer
3 12 (50.00%) Software Developer
4 7 (29.17%) Senior C# Developer
5 6 (25.00%) .NET Developer
5 6 (25.00%) C# Software Developer
6 5 (20.83%) Senior Software Developer
7 3 (12.50%) .NET Software Developer
7 3 (12.50%) C# .NET Developer
8 2 (8.33%) C# VB.NET Developer
8 2 (8.33%) VB.NET Developer
9 1 (4.17%) Full Stack Developer
9 1 (4.17%) HTML Developer
9 1 (4.17%) Lead Developer
9 1 (4.17%) PowerShell Developer
9 1 (4.17%) Scrum Master
9 1 (4.17%) SQL Developer
9 1 (4.17%) SQL Server Developer
9 1 (4.17%) Web Developer
Libraries, Frameworks & Software Standards
1 23 (95.83%) CSS
1 23 (95.83%) HTML
2 13 (54.17%) XHTML
3 12 (50.00%) .NET
4 11 (45.83%) JSON
5 10 (41.67%) RESTful
6 9 (37.50%) HTML5
6 9 (37.50%) XML
7 3 (12.50%) ASP.NET
8 2 (8.33%) ASP.NET MVC
8 2 (8.33%) ASP.NET Web API
9 1 (4.17%) ASP.NET Web Forms
9 1 (4.17%) CSS3
9 1 (4.17%) WCF
9 1 (4.17%) WPF
Miscellaneous
1 10 (41.67%) Analytical Skills
2 6 (25.00%) Computer Science
3 5 (20.83%) Kindle
4 1 (4.17%) Enterprise Software
Operating Systems
1 1 (4.17%) Linux
1 1 (4.17%) Windows
Processes & Methodologies
1 22 (91.67%) Agile Software Development
2 13 (54.17%) Extreme Programming
2 13 (54.17%) OO
3 10 (41.67%) BDD
4 9 (37.50%) SDLC
5 8 (33.33%) Product Management
5 8 (33.33%) SOA
6 7 (29.17%) Creative Thinking
7 5 (20.83%) Scrum
8 4 (16.67%) MVC
9 2 (8.33%) Mentoring
10 1 (4.17%) Performance Tuning
10 1 (4.17%) SOLID
10 1 (4.17%) Web Development
Programming Languages
1 23 (95.83%) C#
1 23 (95.83%) JavaScript
2 8 (33.33%) VB
2 8 (33.33%) VB.NET
2 8 (33.33%) VB6
3 2 (8.33%) PowerShell
3 2 (8.33%) SQL
4 1 (4.17%) Ruby
Qualifications
1 6 (25.00%) HND
Quality Assurance & Compliance
1 8 (33.33%) QA
Vendors
1 1 (4.17%) Microsoft