Period
to 19 November 2017

The following table provides summary statistics for contract job vacancies advertised in Warrington with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 19 November 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
Cheshire > Warrington
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 21 22 50
Rank change year-on-year +1 +28 -23
Contract jobs citing TDD 11 30 8
As % of all contract IT jobs advertised in Warrington 4.00% 6.67% 1.28%
As % of the Processes & Methodologies category 4.91% 7.52% 1.47%
Number of daily rates quoted 9 25 4
Warrington median daily rate £375 £425 £330
Median daily rate % change year-on-year -11.76% +28.69% -31.20%
10th Percentile £311 £225 £241
90th Percentile £490 £675 £500
Cheshire median daily rate £395 £390 £375
% change year-on-year +1.28% +4.00% -
Number of hourly rates quoted 0 0 0
Warrington median hourly rate - - -
Cheshire median hourly rate - - -

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Warrington with a requirement for process or methodology skills.

All Process and Methodology Skills
Warrington
Contract vacancies with a requirement for process or methodology skills 224 399 544
As % of all contract IT jobs advertised in Warrington 81.45% 88.67% 86.90%
Number of daily rates quoted 152 290 424
Warrington median daily rate £400 £450 £475
Median daily rate % change year-on-year -11.11% -5.26% +18.75%
10th Percentile £156 £225 £313
90th Percentile £631 £688 £704
Cheshire median daily rate £420 £400 £425
% change year-on-year +5.00% -5.88% +9.68%
Number of hourly rates quoted 12 8 11
Warrington median hourly rate £12.50 £15.00 £17.50
Median hourly rate % change year-on-year -16.67% -14.29% +16.67%
10th Percentile £8.44 £9.00 £15.00
90th Percentile £33.00 £33.75 £18.75
Cheshire median hourly rate £13.00 £19.63 £17.50
% change year-on-year -33.76% +12.14% -5.41%

TDD
Job Vacancy Trend in Warrington

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

Job vacancy trend for TDD in Warrington

TDD
Contractor Daily Rate Trend in Warrington

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Warrington.

Contractor daily rate trend for TDD in Warrington

TDD
Contractor Daily Rate Histogram in Warrington

The daily rate distribution of IT jobs citing TDD in Warrington over the 6 months to 19 November 2017.

Contractor daily rate histogram for TDD in Warrington

For the 6 months to 19 November 2017, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Warrington region with a requirement for TDD.

1 10 (90.91%) C#
1 10 (90.91%) .NET
1 10 (90.91%) Agile Software Development
1 10 (90.91%) AngularJS
2 8 (72.73%) ASP.NET Web API
2 8 (72.73%) ASP.NET
2 8 (72.73%) MVC
2 8 (72.73%) Microsoft
3 7 (63.64%) .NET Framework
4 6 (54.55%) jQuery
4 6 (54.55%) RESTful
4 6 (54.55%) SQL Server
4 6 (54.55%) JavaScript
4 6 (54.55%) SQL
4 6 (54.55%) Entity Framework
5 5 (45.45%) KnockoutJS
5 5 (45.45%) WCF
5 5 (45.45%) DevOps
5 5 (45.45%) .NET Core
5 5 (45.45%) BizTalk Server
5 5 (45.45%) SharePoint
5 5 (45.45%) Scrum
5 5 (45.45%) Continuous Integration
5 5 (45.45%) DevExpress
5 5 (45.45%) JSON
6 4 (36.36%) OO
6 4 (36.36%) T-SQL
6 4 (36.36%) CSS
7 3 (27.27%) Web Services
7 3 (27.27%) SQL Server Reporting Services

TDD
Co-occurring IT Skills in Warrington 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 5 (45.45%) BizTalk Server
1 5 (45.45%) SharePoint
2 2 (18.18%) CMS
2 2 (18.18%) Umbraco
Business Applications
1 2 (18.18%) Dynamics CRM
Communications & Networking
1 1 (9.09%) HTTP
Database & Business Intelligence
1 6 (54.55%) SQL Server
2 3 (27.27%) SQL Server Reporting Services
3 2 (18.18%) NoSQL
3 2 (18.18%) SQL Server Integration Services
4 1 (9.09%) Couchbase
4 1 (9.09%) CouchDB
4 1 (9.09%) MongoDB
4 1 (9.09%) Relational Database
Development Applications
1 3 (27.27%) Git (software)
1 3 (27.27%) Team Foundation Server
1 3 (27.27%) TeamCity
2 2 (18.18%) Bitbucket
2 2 (18.18%) gulp
2 2 (18.18%) Octopus Deploy
2 2 (18.18%) Selenium
2 2 (18.18%) Visual Studio
3 1 (9.09%) Ant
3 1 (9.09%) Gradle
3 1 (9.09%) JUnit
3 1 (9.09%) Maven
Job Titles
1 11 (100.00%) Developer
2 7 (63.64%) .NET Developer
3 2 (18.18%) ASP.NET Developer
3 2 (18.18%) CRM Developer
3 2 (18.18%) Dynamics CRM Developer
3 2 (18.18%) Senior .NET Developer
3 2 (18.18%) Senior Developer
4 1 (9.09%) C# .NET Developer
4 1 (9.09%) C# Developer
4 1 (9.09%) Java Developer
Libraries, Frameworks & Software Standards
1 10 (90.91%) .NET
1 10 (90.91%) AngularJS
2 8 (72.73%) ASP.NET
2 8 (72.73%) ASP.NET Web API
3 7 (63.64%) .NET Framework
4 6 (54.55%) Entity Framework
4 6 (54.55%) jQuery
4 6 (54.55%) RESTful
5 5 (45.45%) .NET Core
5 5 (45.45%) JSON
5 5 (45.45%) KnockoutJS
5 5 (45.45%) WCF
6 4 (36.36%) CSS
7 3 (27.27%) ASP.NET Core
7 3 (27.27%) ASP.NET MVC
7 3 (27.27%) REST
7 3 (27.27%) Web Services
8 2 (18.18%) ASP.NET Web Forms
8 2 (18.18%) Express
8 2 (18.18%) SOAP
Miscellaneous
1 2 (18.18%) Replication
Operating Systems
1 1 (9.09%) Linux
1 1 (9.09%) Unix
1 1 (9.09%) Windows
Processes & Methodologies
1 10 (90.91%) Agile Software Development
2 8 (72.73%) MVC
3 5 (45.45%) Continuous Integration
3 5 (45.45%) DevOps
3 5 (45.45%) Scrum
4 4 (36.36%) OO
5 3 (27.27%) Continuous Improvement
5 3 (27.27%) SOLID
6 2 (18.18%) BDD
6 2 (18.18%) Collaborative Working
6 2 (18.18%) Content Management
6 2 (18.18%) CRM
6 2 (18.18%) Refactoring
6 2 (18.18%) Test Automation
6 2 (18.18%) Workflow
7 1 (9.09%) Business Analysis
7 1 (9.09%) Domain-Driven Design
7 1 (9.09%) E-Commerce
7 1 (9.09%) OOD
7 1 (9.09%) Unit Testing
Programming Languages
1 10 (90.91%) C#
2 6 (54.55%) JavaScript
2 6 (54.55%) SQL
3 4 (36.36%) T-SQL
4 1 (9.09%) Java
Vendors
1 8 (72.73%) Microsoft
2 5 (45.45%) DevExpress