Period
to 20 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Bolton 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)
Manchester > Bolton
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 8 8 8
Rank change year-on-year 0 0 +3
Permanent jobs citing TDD 58 52 57
As % of all permanent IT jobs advertised in Bolton 30.85% 18.51% 27.27%
As % of the Processes & Methodologies category 33.53% 20.39% 31.67%
Number of salaries quoted 56 51 55
Bolton median annual salary £37,500 £45,000 £42,500
Median salary % change year-on-year -16.67% +5.88% -
10th Percentile £33,750 £38,750 £33,750
90th Percentile £57,500 £47,500 £48,750
Manchester median annual salary £45,000 £45,000 £42,500
% change year-on-year - +5.88% +6.25%

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 Bolton with a requirement for process or methodology skills.

All Process and Methodology Skills
Bolton
Permanent vacancies with a requirement for process or methodology skills 173 255 180
As % of all permanent IT jobs advertised in Bolton 92.02% 90.75% 86.12%
Number of salaries quoted 153 211 171
Bolton median annual salary £37,500 £40,000 £37,500
Median salary % change year-on-year -6.25% +6.67% -6.25%
10th Percentile £27,500 £26,250 £23,750
90th Percentile £50,000 £52,500 £48,750
Manchester median annual salary £44,500 £42,500 £40,000
% change year-on-year +4.71% +6.25% +3.23%

TDD
Job Vacancy Trend in Bolton

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

Job vacancy trend for TDD in Bolton

TDD
Salary Trend in Bolton

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

Salary trend for TDD in Bolton

TDD
Salary Histogram in Bolton

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

Salary histogram for TDD in Bolton

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 Bolton region with a requirement for TDD.

1 54 (93.10%) MVC
2 52 (89.66%) .NET
3 48 (82.76%) C#
4 47 (81.03%) ASP.NET
5 44 (75.86%) Agile Software Development
6 43 (74.14%) ASP.NET MVC
7 42 (72.41%) SQL Server
8 40 (68.97%) ASP.NET Web API
9 39 (67.24%) BDD
10 38 (65.52%) RESTful
10 38 (65.52%) Web Application Development
10 38 (65.52%) SQL Server 2016
10 38 (65.52%) ASP.NET MVC 5
11 35 (60.34%) Continuous Integration
11 35 (60.34%) Scrum
12 34 (58.62%) Marketing
13 32 (55.17%) Dependency Injection
13 32 (55.17%) Advertising
13 32 (55.17%) Facebook
14 14 (24.14%) OOP
14 14 (24.14%) .NET Framework
15 13 (22.41%) Entity Framework
15 13 (22.41%) JavaScript
16 12 (20.69%) AngularJS
17 11 (18.97%) Web Development
18 10 (17.24%) Git (software)
19 9 (15.52%) KnockoutJS
20 8 (13.79%) OO
20 8 (13.79%) SOLID
21 7 (12.07%) Mentoring

TDD
Co-occurring IT Skills in Bolton 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 6 (10.34%) Internet
Database & Business Intelligence
1 42 (72.41%) SQL Server
2 38 (65.52%) SQL Server 2016
3 6 (10.34%) NoSQL
4 4 (6.90%) MySQL
5 1 (1.72%) Relational Database
Development Applications
1 10 (17.24%) Git (software)
General
1 34 (58.62%) Marketing
2 32 (55.17%) Advertising
Job Titles
1 50 (86.21%) Developer
2 39 (67.24%) .NET Developer
3 18 (31.03%) Senior Developer
4 7 (12.07%) Senior .NET Developer
5 6 (10.34%) .NET Development Manager
5 6 (10.34%) Development Manager
5 6 (10.34%) PHP Developer
5 6 (10.34%) Senior PHP Developer
6 5 (8.62%) C# Developer
6 5 (8.62%) Senior C# Developer
7 4 (6.90%) C# Web Developer
7 4 (6.90%) Senior Web Developer
7 4 (6.90%) Web Developer
8 2 (3.45%) Development Team Leader
8 2 (3.45%) Software Development Team Leader
8 2 (3.45%) Software Team Leader
8 2 (3.45%) Team Leader
9 1 (1.72%) Senior C# .NET Developer
9 1 (1.72%) Senior SQL Developer
9 1 (1.72%) SQL Developer
Libraries, Frameworks & Software Standards
1 52 (89.66%) .NET
2 47 (81.03%) ASP.NET
3 43 (74.14%) ASP.NET MVC
4 40 (68.97%) ASP.NET Web API
5 38 (65.52%) ASP.NET MVC 5
5 38 (65.52%) RESTful
6 14 (24.14%) .NET Framework
7 13 (22.41%) Entity Framework
8 12 (20.69%) AngularJS
9 9 (15.52%) KnockoutJS
10 7 (12.07%) NHibernate
11 6 (10.34%) Code First Entity Framework
11 6 (10.34%) HTML
11 6 (10.34%) Laravel
11 6 (10.34%) Node.js
11 6 (10.34%) Symfony
11 6 (10.34%) Twitter Bootstrap
11 6 (10.34%) WCF
12 4 (6.90%) ASP.NET Web Forms
12 4 (6.90%) CSS
Miscellaneous
1 2 (3.45%) Computer Science
2 1 (1.72%) Greenfield Project
2 1 (1.72%) User Experience
Processes & Methodologies
1 54 (93.10%) MVC
2 44 (75.86%) Agile Software Development
3 39 (67.24%) BDD
4 38 (65.52%) Web Application Development
5 35 (60.34%) Continuous Integration
5 35 (60.34%) Scrum
6 32 (55.17%) Dependency Injection
7 14 (24.14%) OOP
8 11 (18.97%) Web Development
9 8 (13.79%) OO
9 8 (13.79%) SOLID
10 7 (12.07%) Mentoring
11 6 (10.34%) Logistics
11 6 (10.34%) Refactoring
12 4 (6.90%) Coaching
12 4 (6.90%) SOA
13 3 (5.17%) IT Strategy
14 2 (3.45%) E-Commerce
14 2 (3.45%) Kanban
14 2 (3.45%) SDLC
Programming Languages
1 48 (82.76%) C#
2 13 (22.41%) JavaScript
3 6 (10.34%) PHP
3 6 (10.34%) Ruby
4 5 (8.62%) SQL
Qualifications
1 2 (3.45%) Computer Science Degree
1 2 (3.45%) Degree
Vendors
1 32 (55.17%) Facebook
2 6 (10.34%) Microsoft
2 6 (10.34%) Zend
3 1 (1.72%) Xamarin