The table below looks at the statistics for TDD skills in IT contracts advertised for the Welwyn region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 31 May 2016 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
31 May 2016
Same period 2015 Same period 2014
Test-Driven Development (TDD)
Rank - - -
Contract jobs citing TDD 0 0 0
As % of all contract IT jobs located in Welwyn - - -
As % of the Processes & Methodologies category - - -
Number of daily rates quoted 0 0 0
Median daily rate - - -
UK excluding London median daily rate £413 £380 £375
% change year-on-year
+8.55% +1.33%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £42.29 £42.50 £59.50
% change year-on-year
-0.49% -28.57%
TDD
Hertfordshire

The following table is for comparison with the above and provides statistics for the entire Processes & Methodologies category in contract jobs advertised in the Welwyn region.

Processes & Methodologies Category
Welwyn
Contract IT job ads with a match in the
Processes & Methodologies category
5 0 0
As % of all contract IT jobs located in Welwyn 100.00% - -
Number of daily rates quoted 0 0 0
Median daily rate - - -
UK excluding London median daily rate £400 £387 £375
% change year-on-year
+3.35% +3.20%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £32.50 £30.50 £30.00
% change year-on-year
+6.55% +1.66%

TDD
Top 24 Related IT Skills in Welwyn

For the 6 months to 31 May 2016, 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 Welwyn region with a requirement for TDD.

1 3 (100.00%) Java
1 3 (100.00%) E-Commerce
1 3 (100.00%) Agile Software Development
1 3 (100.00%) Spring
1 3 (100.00%) Microsoft Azure
1 3 (100.00%) Amazon AWS
1 3 (100.00%) Open Source
1 3 (100.00%) iPad
1 3 (100.00%) DevOps
1 3 (100.00%) Continuous Delivery
2 2 (66.67%) SOLID
2 2 (66.67%) Microservices
2 2 (66.67%) REST
2 2 (66.67%) GitHub
2 2 (66.67%) JSON
2 2 (66.67%) SOAP
2 2 (66.67%) Web Services
2 2 (66.67%) XML
3 1 (33.33%) Unit Testing
3 1 (33.33%) Supply Chain Management
3 1 (33.33%) Retail
3 1 (33.33%) Couchbase
3 1 (33.33%) Mentoring
3 1 (33.33%) NoSQL

TDD
Top Related IT Skills in Welwyn 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:

Cloud Services
1 3 (100.00%) Amazon AWS
1 3 (100.00%) Microsoft Azure
2 2 (66.67%) GitHub
Database & Business Intelligence
1 1 (33.33%) Couchbase
1 1 (33.33%) NoSQL
General
1 1 (33.33%) Retail
Job Titles
1 2 (66.67%) Agile Developer
1 2 (66.67%) Agile Java Developer
1 2 (66.67%) Core Java Developer
1 2 (66.67%) Developer
1 2 (66.67%) Java Developer
2 1 (33.33%) Architect
2 1 (33.33%) Cloud Architect
2 1 (33.33%) E-Commerce Architect
2 1 (33.33%) Java Architect
2 1 (33.33%) NoSQL Architect
Libraries, Frameworks & Software Standards
1 3 (100.00%) Spring
2 2 (66.67%) JSON
2 2 (66.67%) REST
2 2 (66.67%) SOAP
2 2 (66.67%) Web Services
2 2 (66.67%) XML
Miscellaneous
1 3 (100.00%) iPad
Processes & Methodologies
1 3 (100.00%) Agile Software Development
1 3 (100.00%) Continuous Delivery
1 3 (100.00%) DevOps
1 3 (100.00%) E-Commerce
1 3 (100.00%) Open Source
2 2 (66.67%) Microservices
2 2 (66.67%) SOLID
3 1 (33.33%) Mentoring
3 1 (33.33%) Supply Chain Management
3 1 (33.33%) Unit Testing
Programming Languages
1 3 (100.00%) Java