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 3 months to 24 March 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.

3 months to
24 Mar 2017
Same period 2016 Same period 2015
Test-Driven Development (TDD)
Cheshire / Warrington
Rank 14 29 32
Rank change year-on-year +15 +3  
Contract jobs citing TDD 4 18 1
As % of all contract IT jobs advertised in Warrington 3.85% 5.17% 0.51%
As % of the Processes & Methodologies category 4.71% 5.98% 0.56%
Number of daily rates quoted 2 11 0
Median daily rate £348 £350 -
Median daily rate % change year-on-year -0.50% -  
UK excluding London median daily rate £408 £400 £375
% change year-on-year +1.87% +6.66%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £39.00 £45.75 £36.00
% change year-on-year -14.75% +27.08%  

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

Contract Process & Methodology Skills
Warrington
Contract job vacancies with a requirement for process and methodology skills 85 301 180
As % of all contract IT job vacancies advertised in Warrington 81.73% 86.49% 90.91%
Number of daily rates quoted 61 178 105
Median daily rate £373 £440 £475
Median daily rate % change year-on-year -15.34% -7.36%  
90% offered a daily rate of more than £120 £320 £260
10% offered a daily rate of more than £525 £600 £675
UK excluding London median daily rate £410 £400 £400
% change year-on-year +2.50% -  
Number of hourly rates quoted 1 4 6
Median hourly rate £20.00 £50.00 £15.00
Median hourly rate % change year-on-year -60.00% +233.33%  
UK excluding London median hourly rate £36.00 £39.00 £30.00
% change year-on-year -7.69% +30.00%  

TDD
Job Vacancy Trend in Warrington

The job posting trend of jobs advertised in Warrington citing TDD as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

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 3 months to 24 March 2017.

Contractor daily rate histogram for TDD in Warrington

TDD
Top 30 Related IT Skills in Warrington

For the 6 months to 24 March 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 8 (88.89%) Agile Software Development
2 6 (66.67%) Scrum
3 5 (55.56%) C#
3 5 (55.56%) BDD
4 4 (44.44%) AngularJS
4 4 (44.44%) HTML
4 4 (44.44%) JavaScript
4 4 (44.44%) .NET
4 4 (44.44%) CSS
5 3 (33.33%) SQL Server
5 3 (33.33%) Web Development
5 3 (33.33%) Selenium
5 3 (33.33%) jQuery
6 2 (22.22%) HTML5
6 2 (22.22%) Stakeholder Engagement
6 2 (22.22%) Entity Framework
6 2 (22.22%) Node.js
6 2 (22.22%) CSS3
6 2 (22.22%) Continuous Improvement
6 2 (22.22%) DevOps
6 2 (22.22%) ASP.NET Web API
6 2 (22.22%) SDLC
6 2 (22.22%) CMS
6 2 (22.22%) .NET Framework
6 2 (22.22%) JSON
6 2 (22.22%) Automated Testing
6 2 (22.22%) Content Management
6 2 (22.22%) MVC
6 2 (22.22%) Continuous Integration
6 2 (22.22%) Git (software)

TDD
Top Related 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 2 (22.22%) CMS
2 1 (11.11%) Confluence
2 1 (11.11%) Umbraco
Applications
1 1 (11.11%) Fireworks
1 1 (11.11%) MS Visio
1 1 (11.11%) Photoshop
Cloud Services
1 1 (11.11%) Microsoft Azure
1 1 (11.11%) Trello
Database & Business Intelligence
1 3 (33.33%) SQL Server
2 1 (11.11%) SQL Server 2008
Development Applications
1 3 (33.33%) Selenium
2 2 (22.22%) Git (software)
3 1 (11.11%) Bitbucket
3 1 (11.11%) Cucumber
3 1 (11.11%) JIRA
3 1 (11.11%) MSBuild
3 1 (11.11%) Octopus Deploy
3 1 (11.11%) TeamCity
General
1 1 (11.11%) Finance
Job Titles
1 4 (44.44%) Developer
2 2 (22.22%) .NET Developer
2 2 (22.22%) ASP.NET Developer
2 2 (22.22%) C# .NET Developer
2 2 (22.22%) C# ASP.NET Developer
2 2 (22.22%) C# Developer
3 1 (11.11%) Agile Business Analyst
3 1 (11.11%) Angular Developer
3 1 (11.11%) ASP.NET MVC Developer
3 1 (11.11%) Automation Tester
3 1 (11.11%) DevOps Engineer
3 1 (11.11%) Front End Developer (Client-Side Developer)
3 1 (11.11%) Front End Web Developer (Client-Side Developer)
3 1 (11.11%) Full Stack Developer
3 1 (11.11%) Selenium Automation Tester
3 1 (11.11%) Selenium Tester
3 1 (11.11%) Senior C# .NET Developer
3 1 (11.11%) Senior C# ASP.NET Developer
3 1 (11.11%) Senior SQL Developer
3 1 (11.11%) Web Engineer
Libraries, Frameworks & Software Standards
1 4 (44.44%) .NET
1 4 (44.44%) AngularJS
1 4 (44.44%) CSS
1 4 (44.44%) HTML
2 3 (33.33%) jQuery
3 2 (22.22%) .NET Framework
3 2 (22.22%) ASP.NET
3 2 (22.22%) ASP.NET Web API
3 2 (22.22%) CSS3
3 2 (22.22%) Entity Framework
3 2 (22.22%) HTML5
3 2 (22.22%) JSON
3 2 (22.22%) Node.js
4 1 (11.11%) ASP.NET MVC
4 1 (11.11%) ASP.NET Web Forms
4 1 (11.11%) Dropwizard
4 1 (11.11%) REST
4 1 (11.11%) RESTful
4 1 (11.11%) Spring
4 1 (11.11%) WCF
Miscellaneous
1 1 (11.11%) User Experience
Operating Systems
1 1 (11.11%) Linux
Processes & Methodologies
1 8 (88.89%) Agile Software Development
2 6 (66.67%) Scrum
3 5 (55.56%) BDD
4 3 (33.33%) Web Development
5 2 (22.22%) Automated Testing
5 2 (22.22%) Content Management
5 2 (22.22%) Continuous Improvement
5 2 (22.22%) Continuous Integration
5 2 (22.22%) DevOps
5 2 (22.22%) MVC
5 2 (22.22%) Project Management
5 2 (22.22%) SDLC
5 2 (22.22%) Stakeholder Engagement
6 1 (11.11%) Exploratory Testing
6 1 (11.11%) Front End Development
6 1 (11.11%) Open Source
6 1 (11.11%) Requirements Engineering
6 1 (11.11%) SFIA
6 1 (11.11%) Software Delivery
6 1 (11.11%) SOLID
Programming Languages
1 5 (55.56%) C#
2 4 (44.44%) JavaScript
3 2 (22.22%) SQL
4 1 (11.11%) Java
4 1 (11.11%) PL/SQL
4 1 (11.11%) PowerShell
Qualifications
1 1 (11.11%) ISEB
Systems Management
1 1 (11.11%) AirWatch
Vendors
1 1 (11.11%) Apple
1 1 (11.11%) ATG
1 1 (11.11%) hybris