The following table provides summary statistics for permanent job vacancies advertised in St Albans 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 28 March 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Hertfordshire / St Albans
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 14 10 9
Rank change year-on-year -4 -1  
Permanent jobs citing TDD 35 27 53
As % of all permanent IT jobs advertised in St Albans 19.89% 28.13% 34.64%
As % of the Processes & Methodologies category 21.88% 32.53% 39.85%
Number of salaries quoted 35 27 53
Median salary £50,000 £60,000 £60,000
Median salary % change year-on-year -16.66% -  
90% offered a salary of more than £40,000 £35,000 £35,000
10% offered a salary of more than £65,000 £65,000 £65,000
UK excluding London median salary £45,000 £45,000 £40,500
% change year-on-year - +11.11%  

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 St Albans with a requirement for process and methodology skills.

Process & Methodology Skills
St Albans
Permanent job vacancies with a requirement for process and methodology skills 160 83 133
As % of all permanent IT job vacancies advertised in St Albans 90.91% 86.46% 86.93%
Number of salaries quoted 144 76 127
Median salary £47,500 £50,000 £55,000
Median salary % change year-on-year -5.00% -9.09%  
90% offered a salary of more than £35,000 £27,650 £35,000
10% offered a salary of more than £65,000 £65,000 £65,000
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in St Albans

The job posting trend of jobs advertised in St Albans 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 St Albans

TDD
Salary Trend in St Albans

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

Salary trend for TDD in St Albans

TDD
Salary Histogram in St Albans

The salary distribution of IT jobs citing TDD in St Albans over the 3 months to 28 March 2017.

Salary histogram for TDD in St Albans

For the 6 months to 28 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 St Albans region with a requirement for TDD.

1 62 (100.00%) C#
1 62 (100.00%) .NET
1 62 (100.00%) Agile Software Development
2 61 (98.39%) MVC
2 61 (98.39%) ASP.NET
3 52 (83.87%) SQL Server
4 49 (79.03%) ASP.NET MVC
5 41 (66.13%) OO
6 36 (58.06%) BDD
6 36 (58.06%) ASP.NET Web API
7 35 (56.45%) WCF
8 34 (54.84%) RESTful
9 33 (53.23%) ASP.NET MVC 5
10 32 (51.61%) SQL Server 2014
10 32 (51.61%) NoSQL
10 32 (51.61%) Git (software)
10 32 (51.61%) Node.js
10 32 (51.61%) Web Application Development
10 32 (51.61%) Ruby
11 29 (46.77%) .NET Framework
11 29 (46.77%) JavaScript
11 29 (46.77%) Scrum
11 29 (46.77%) AngularJS
12 27 (43.55%) Entity Framework
12 27 (43.55%) Facebook
12 27 (43.55%) Social Media
12 27 (43.55%) Sony
12 27 (43.55%) BBC
12 27 (43.55%) Apple
12 27 (43.55%) Yahoo!

TDD
Co-occurring IT Skills in St Albans 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 2 (3.23%) IIS
Applications
1 1 (1.61%) MS Excel
Cloud Services
1 11 (17.74%) Microsoft Azure
Communications & Networking
1 2 (3.23%) Wireshark
Database & Business Intelligence
1 52 (83.87%) SQL Server
2 32 (51.61%) NoSQL
2 32 (51.61%) SQL Server 2014
3 12 (19.35%) SQL Server Integration Services
3 12 (19.35%) SQL Server Reporting Services
4 4 (6.45%) Data Warehouse
5 3 (4.84%) Relational Database
5 3 (4.84%) SQL Server 2016
6 1 (1.61%) Apache Cassandra
6 1 (1.61%) Redis
Development Applications
1 32 (51.61%) Git (software)
2 11 (17.74%) Octopus Deploy
2 11 (17.74%) TeamCity
3 8 (12.90%) ReSharper
4 3 (4.84%) NUnit
5 2 (3.23%) Atlassian Bamboo
5 2 (3.23%) Fiddler
5 2 (3.23%) Jenkins
5 2 (3.23%) Subversion
General
1 2 (3.23%) Marketing
Job Titles
1 62 (100.00%) Developer
2 49 (79.03%) .NET Developer
3 27 (43.55%) Social Media Developer
4 20 (32.26%) Senior Developer
5 15 (24.19%) C# Developer
6 14 (22.58%) ASP.NET MVC Developer
7 12 (19.35%) Software Developer
8 11 (17.74%) C# .NET Developer
9 10 (16.13%) ASP.NET Developer
9 10 (16.13%) C# ASP.NET Developer
10 9 (14.52%) Senior .NET Developer
11 8 (12.90%) Senior Software Developer
12 7 (11.29%) Angular Developer
12 7 (11.29%) Junior
12 7 (11.29%) Junior C# Developer
12 7 (11.29%) Junior Developer
13 6 (9.68%) Azure Developer
13 6 (9.68%) Graduate C# Developer
13 6 (9.68%) Junior ASP.NET MVC Developer
13 6 (9.68%) Junior C# ASP.NET Developer
Libraries, Frameworks & Software Standards
1 62 (100.00%) .NET
2 61 (98.39%) ASP.NET
3 49 (79.03%) ASP.NET MVC
4 36 (58.06%) ASP.NET Web API
5 35 (56.45%) WCF
6 34 (54.84%) RESTful
7 33 (53.23%) ASP.NET MVC 5
8 32 (51.61%) Node.js
9 29 (46.77%) .NET Framework
9 29 (46.77%) AngularJS
10 27 (43.55%) Entity Framework
11 5 (8.06%) Code First Entity Framework
12 4 (6.45%) CSS
12 4 (6.45%) HTML
13 3 (4.84%) Ajax
13 3 (4.84%) HTML5
13 3 (4.84%) jQuery
13 3 (4.84%) React
13 3 (4.84%) Twitter Bootstrap
14 2 (3.23%) Sass
Miscellaneous
1 27 (43.55%) BBC
1 27 (43.55%) Social Media
2 5 (8.06%) Enterprise Software
3 1 (1.61%) Computer Science
Operating Systems
1 12 (19.35%) Windows
Processes & Methodologies
1 62 (100.00%) Agile Software Development
2 61 (98.39%) MVC
3 41 (66.13%) OO
4 36 (58.06%) BDD
5 32 (51.61%) Web Application Development
6 29 (46.77%) Scrum
7 13 (20.97%) OOP
8 10 (16.13%) Web Design
9 9 (14.52%) SOLID
10 3 (4.84%) Data Analysis
10 3 (4.84%) Multithreading
10 3 (4.84%) SDLC
11 2 (3.23%) API Design
11 2 (3.23%) Continuous Integration
11 2 (3.23%) Dependency Injection
11 2 (3.23%) DevOps
11 2 (3.23%) Responsive Web Design
11 2 (3.23%) Software Engineering
11 2 (3.23%) Unit Testing
12 1 (1.61%) Mathematics
Programming Languages
1 62 (100.00%) C#
2 32 (51.61%) Ruby
3 29 (46.77%) JavaScript
4 23 (37.10%) SQL
4 23 (37.10%) T-SQL
5 2 (3.23%) PowerShell
5 2 (3.23%) TypeScript
Qualifications
1 8 (12.90%) Degree
Quality Assurance & Compliance
1 2 (3.23%) QA
Vendors
1 27 (43.55%) Apple
1 27 (43.55%) Facebook
1 27 (43.55%) Google
1 27 (43.55%) Sony
1 27 (43.55%) Yahoo!
2 3 (4.84%) Microsoft
St. Albans, Hertfordshire
Dawson & Walsh
Salary: £40000 - £80000 per annum + Bonus + Pension + Benefits
Posted: Yesterday
St. Albans, Hertfordshire
Dawson & Walsh
Salary: £30000 - £40000 per annum + Bonus + Pension + Benefits
Posted: Yesterday