The following table provides summary statistics for contract job vacancies advertised in Chester 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 25 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
25 Mar 2017
Same period 2016 Same period 2015
Test-Driven Development (TDD)
Cheshire / Chester
Rank 9 21 25
Rank change year-on-year +12 +4  
Contract jobs citing TDD 12 10 8
As % of all contract IT jobs advertised in Chester 11.54% 6.62% 4.30%
As % of the Processes & Methodologies category 14.63% 8.20% 5.16%
Number of daily rates quoted 10 7 6
Median daily rate £438 £405 £338
Median daily rate % change year-on-year +8.02% +20.00%  
90% offered a daily rate of more than £436 £340 £275
10% offered a daily rate of more than £500 £423 £394
UK excluding London median daily rate £405 £400 £375
% change year-on-year +1.25% +6.66%  
Number of hourly rates quoted 1 0 0
Median hourly rate £50.00 - -
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 Chester with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Chester
Contract job vacancies with a requirement for process and methodology skills 82 122 155
As % of all contract IT job vacancies advertised in Chester 78.85% 80.79% 83.33%
Number of daily rates quoted 71 87 108
Median daily rate £375 £400 £413
Median daily rate % change year-on-year -6.25% -3.03%  
90% offered a daily rate of more than £275 £245 £300
10% offered a daily rate of more than £500 £475 £600
UK excluding London median daily rate £410 £400 £400
% change year-on-year +2.50% +0.06%  
Number of hourly rates quoted 6 11 13
Median hourly rate £23.75 £27.50 £35.00
Median hourly rate % change year-on-year -13.63% -21.42%  
90% offered a hourly rate of more than £16.70 £16.76 £27.50
10% offered a hourly rate of more than £50.00 £35.00 £55.00
UK excluding London median hourly rate £36.00 £38.75 £30.00
% change year-on-year -7.09% +29.16%  

TDD
Job Vacancy Trend in Chester

The job posting trend of jobs advertised in Chester 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 Chester

TDD
Contractor Daily Rate Trend in Chester

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

Contractor daily rate trend for TDD in Chester

TDD
Top 30 Related IT Skills in Chester

For the 6 months to 25 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 Chester region with a requirement for TDD.

1 20 (95.24%) Agile Software Development
2 17 (80.95%) Java
2 17 (80.95%) OO
3 9 (42.86%) J2EE
3 9 (42.86%) Web Services
4 8 (38.10%) Finance
5 7 (33.33%) SQL
5 7 (33.33%) OOP
5 7 (33.33%) Python
5 7 (33.33%) Unit Testing
6 6 (28.57%) Derivative
6 6 (28.57%) Amazon AWS
6 6 (28.57%) NoSQL
6 6 (28.57%) Apache Camel
6 6 (28.57%) OTC Derivatives
7 5 (23.81%) Back Office
7 5 (23.81%) Banking
7 5 (23.81%) C#
7 5 (23.81%) Microservices
7 5 (23.81%) High Availability
7 5 (23.81%) Software Engineering
8 4 (19.05%) Scrum
9 3 (14.29%) Spring
9 3 (14.29%) MVC
9 3 (14.29%) XML
9 3 (14.29%) SOAP
9 3 (14.29%) Waterfall
9 3 (14.29%) WebSphere
9 3 (14.29%) Continuous Integration
10 2 (9.52%) SC Cleared

TDD
Top Related IT Skills in Chester 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 3 (14.29%) WebSphere
2 2 (9.52%) GlassFish
2 2 (9.52%) JBoss
2 2 (9.52%) Tomcat
2 2 (9.52%) WebLogic
3 1 (4.76%) SharePoint
3 1 (4.76%) WebSphere Application Server
Business Applications
1 1 (4.76%) Dynamics CRM
Cloud Services
1 6 (28.57%) Amazon AWS
Database & Business Intelligence
1 6 (28.57%) NoSQL
2 1 (4.76%) MongoDB
2 1 (4.76%) Oracle Database
2 1 (4.76%) SQL Server
Development Applications
1 2 (9.52%) Jenkins
1 2 (9.52%) Selenium
2 1 (4.76%) Git (software)
2 1 (4.76%) JIRA
2 1 (4.76%) JUnit
2 1 (4.76%) LoadRunner
2 1 (4.76%) Subversion
2 1 (4.76%) Team Foundation Server
General
1 8 (38.10%) Finance
2 5 (23.81%) Back Office
2 5 (23.81%) Banking
Job Titles
1 6 (28.57%) Technical Leader
2 5 (23.81%) Architect
2 5 (23.81%) Developer
2 5 (23.81%) Java Architect
2 5 (23.81%) Java Technical Architect
2 5 (23.81%) Lead Architect
2 5 (23.81%) Technical Architect
3 3 (14.29%) Java Developer
3 3 (14.29%) Software Engineer
4 1 (4.76%) Analyst
4 1 (4.76%) C# Developer
4 1 (4.76%) C# Software Engineer
4 1 (4.76%) C++ Developer
4 1 (4.76%) C++ Software Engineer
4 1 (4.76%) C++/C# Developer
4 1 (4.76%) CRM Developer
4 1 (4.76%) Dynamics CRM Developer
4 1 (4.76%) Middleware Developer
4 1 (4.76%) Senior Software Engineer
4 1 (4.76%) Test Analyst
Libraries, Frameworks & Software Standards
1 9 (42.86%) J2EE
1 9 (42.86%) Web Services
2 6 (28.57%) Apache Camel
3 3 (14.29%) SOAP
3 3 (14.29%) Spring
3 3 (14.29%) XML
4 2 (9.52%) JSON
4 2 (9.52%) JSTL
4 2 (9.52%) REST
4 2 (9.52%) RESTful
4 2 (9.52%) Struts
5 1 (4.76%) ASP.NET MVC
5 1 (4.76%) ASP.NET Web API
5 1 (4.76%) JAXB
5 1 (4.76%) JAX-WS
5 1 (4.76%) Middleware
5 1 (4.76%) Node.js
5 1 (4.76%) POJO
5 1 (4.76%) WSDL
5 1 (4.76%) XSLT
Miscellaneous
1 6 (28.57%) Derivative
1 6 (28.57%) OTC Derivatives
2 2 (9.52%) Computer Science
3 1 (4.76%) Foreign Exchange (FX)
Processes & Methodologies
1 20 (95.24%) Agile Software Development
2 17 (80.95%) OO
3 7 (33.33%) OOP
3 7 (33.33%) Unit Testing
4 5 (23.81%) High Availability
4 5 (23.81%) Microservices
4 5 (23.81%) Software Engineering
5 4 (19.05%) Scrum
6 3 (14.29%) Continuous Integration
6 3 (14.29%) MVC
6 3 (14.29%) Waterfall
7 2 (9.52%) BDD
7 2 (9.52%) E-Commerce
7 2 (9.52%) Memory Management
7 2 (9.52%) Open Source
7 2 (9.52%) RAD
7 2 (9.52%) RUP
7 2 (9.52%) Test Scripting
7 2 (9.52%) UML
7 2 (9.52%) Validation
Programming Languages
1 17 (80.95%) Java
2 7 (33.33%) Python
2 7 (33.33%) SQL
3 5 (23.81%) C#
4 2 (9.52%) C++
5 1 (4.76%) Groovy
5 1 (4.76%) JavaScript
5 1 (4.76%) PL/SQL
Qualifications
1 2 (9.52%) Degree
1 2 (9.52%) SC Cleared
1 2 (9.52%) Security Cleared
Quality Assurance & Compliance
1 1 (4.76%) QA
Vendors
1 2 (9.52%) hybris
2 1 (4.76%) IBM
2 1 (4.76%) Microsoft
2 1 (4.76%) Oracle
2 1 (4.76%) Telerik