The table below looks at the statistics for TDD skills in IT contracts advertised for the Croydon region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 30 September 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
30 Sep 2016
Same period 2015 Same period 2014
Test-Driven Development (TDD)
Rank 33 21 23
Rank change year-on-year
-12 +2
Contract jobs citing TDD 15 16 6
As % of all contract IT jobs located in Croydon 5.49% 8.29% 4.08%
As % of the Processes & Methodologies category 6.10% 9.82% 4.69%
Number of daily rates quoted 13 9 5
Median daily rate £450 £450 £450
90% offered a daily rate of more than £400 £370 £438
10% offered a daily rate of more than £580 £465 £475
UK excluding London median daily rate £425 £390 £375
% change year-on-year
+8.97% +4.00%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £41.25 £37.45 £35.00
% change year-on-year
+10.14% +7.00%
TDD
London

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

Processes & Methodologies Category
Croydon
Contract IT job ads with a match in the
Processes & Methodologies category
246 163 128
As % of all contract IT jobs located in Croydon 90.11% 84.46% 87.07%
Number of daily rates quoted 152 113 114
Median daily rate £413 £450 £470
Median daily rate % change year-on-year
-8.33% -4.25%
90% offered a daily rate of more than £325 £325 £355
10% offered a daily rate of more than £525 £525 £680
UK excluding London median daily rate £400 £400 £375
% change year-on-year
- +6.66%
Number of hourly rates quoted 3 1 1
Median hourly rate £27.00 £12.50 £15.00
Median hourly rate % change year-on-year
+116.00% -16.66%
UK excluding London median hourly rate £32.50 £34.00 £25.75
% change year-on-year
-4.41% +32.03%

TDD
Jobs Demand Trend in Croydon

The demand trend of contract jobs across the Croydon region citing TDD as a proportion of all IT contracts with a match in the Processes & Methodologies category.

TDD Jobs Demand Trend in Croydon

TDD
Daily Rate Trend in Croydon

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing TDD across the Croydon region.

TDD Daily Rate Trend in Croydon

TDD
Daily Rate Histogram in Croydon

This chart provides a histogram of daily rates quoted in contract IT jobs citing TDD across the Croydon region over the 3 months to 30 September 2016.

TDD Daily Rate Histogram in Croydon

TDD
Top 30 Related IT Skills in Croydon

For the 6 months to 30 September 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 Croydon region with a requirement for TDD.

1 42 (93.33%) Agile Software Development
2 30 (66.67%) BDD
3 20 (44.44%) Scrum
3 20 (44.44%) Security Cleared
4 17 (37.78%) Java
4 17 (37.78%) JavaScript
5 15 (33.33%) HTML
5 15 (33.33%) CSS
6 14 (31.11%) Git (software)
6 14 (31.11%) Mentoring
7 12 (26.67%) SC Cleared
8 11 (24.44%) AngularJS
8 11 (24.44%) Analytical Skills
8 11 (24.44%) User Stories
9 10 (22.22%) Continuous Integration
10 9 (20.00%) RESTful
10 9 (20.00%) SDLC
11 8 (17.78%) Data Integration
11 8 (17.78%) Agile Project Management
11 8 (17.78%) Node.js
11 8 (17.78%) REST
11 8 (17.78%) HTML5
11 8 (17.78%) Project Management
11 8 (17.78%) OO
11 8 (17.78%) Pair Programming
12 7 (15.56%) PostgreSQL
12 7 (15.56%) GitHub
12 7 (15.56%) API Development
12 7 (15.56%) Front End Development
13 6 (13.33%) Continuous Delivery

TDD
Top Related IT Skills in Croydon 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 4 (8.89%) Elasticsearch
2 2 (4.44%) Tomcat
3 1 (2.22%) JBoss
3 1 (2.22%) WildFly
Cloud Services
1 7 (15.56%) GitHub
2 2 (4.44%) Amazon AWS
2 2 (4.44%) Amazon EC2
3 1 (2.22%) Microsoft Azure
Database & Business Intelligence
1 7 (15.56%) PostgreSQL
2 3 (6.67%) MySQL
2 3 (6.67%) SQL Server
3 1 (2.22%) Azure SQL Database
3 1 (2.22%) NoSQL
3 1 (2.22%) QlikView
Development Applications
1 14 (31.11%) Git (software)
2 5 (11.11%) Cucumber
2 5 (11.11%) JIRA
3 4 (8.89%) Grunt
4 3 (6.67%) Jenkins
4 3 (6.67%) Maven
5 2 (4.44%) DbUnit
5 2 (4.44%) Gradle
5 2 (4.44%) Jasmine
5 2 (4.44%) jMock
5 2 (4.44%) JUnit
5 2 (4.44%) Mockito
5 2 (4.44%) SonarQube
6 1 (2.22%) Ant
6 1 (2.22%) gulp
6 1 (2.22%) Karma Test Runner
6 1 (2.22%) MSBuild
6 1 (2.22%) NUnit
6 1 (2.22%) Protractor
6 1 (2.22%) Visual Studio
General
1 3 (6.67%) Finance
2 2 (4.44%) Games
3 1 (2.22%) Telecoms
Job Titles
1 24 (53.33%) Developer
2 6 (13.33%) Architect
2 6 (13.33%) Java Developer
2 6 (13.33%) Technical Architect
3 5 (11.11%) Front End Developer (Client-Side Developer)
3 5 (11.11%) Node.js Developer
3 5 (11.11%) Technical Leader
4 4 (8.89%) Front End Web Developer (Client-Side Developer)
4 4 (8.89%) Senior Developer
4 4 (8.89%) Web Developer
5 3 (6.67%) JavaScript Developer
5 3 (6.67%) Senior Java Developer
6 2 (4.44%) Agile Business Analyst
6 2 (4.44%) Angular Developer
6 2 (4.44%) C# ASP.NET Developer
6 2 (4.44%) Enterprise Technical Architect
6 2 (4.44%) Full Stack Developer
6 2 (4.44%) PHP Symfony Developer
6 2 (4.44%) Scala Developer
6 2 (4.44%) UI Developer
Libraries, Frameworks & Software Standards
1 15 (33.33%) CSS
1 15 (33.33%) HTML
2 11 (24.44%) AngularJS
3 9 (20.00%) RESTful
4 8 (17.78%) HTML5
4 8 (17.78%) Node.js
4 8 (17.78%) REST
5 6 (13.33%) Sass
5 6 (13.33%) Spring
5 6 (13.33%) Web Services
6 5 (11.11%) jQuery
6 5 (11.11%) Twitter Bootstrap
7 4 (8.89%) Backbone.js
7 4 (8.89%) Ember.js
7 4 (8.89%) Kafka
7 4 (8.89%) RabbitMQ
7 4 (8.89%) React
8 3 (6.67%) Apache Camel
8 3 (6.67%) ASP.NET MVC
8 3 (6.67%) Symfony
Miscellaneous
1 11 (24.44%) Analytical Skills
2 8 (17.78%) Data Integration
3 5 (11.11%) Enterprise Software
4 3 (6.67%) User Experience
5 2 (4.44%) Embedded Systems
5 2 (4.44%) Minimum Viable Product
5 2 (4.44%) Mobile App
Processes & Methodologies
1 42 (93.33%) Agile Software Development
2 30 (66.67%) BDD
3 20 (44.44%) Scrum
4 14 (31.11%) Mentoring
5 11 (24.44%) User Stories
6 10 (22.22%) Continuous Integration
7 9 (20.00%) SDLC
8 8 (17.78%) Agile Project Management
8 8 (17.78%) OO
8 8 (17.78%) Pair Programming
8 8 (17.78%) Project Management
9 7 (15.56%) API Development
9 7 (15.56%) Front End Development
10 6 (13.33%) Continuous Delivery
10 6 (13.33%) Data Modelling
10 6 (13.33%) Information Security
10 6 (13.33%) Web Development
11 5 (11.11%) Stakeholder Management
12 4 (8.89%) Coaching
12 4 (8.89%) MVC
Programming Languages
1 17 (37.78%) Java
1 17 (37.78%) JavaScript
2 5 (11.11%) Scala
3 4 (8.89%) ES6
3 4 (8.89%) SQL
4 3 (6.67%) C#
4 3 (6.67%) PHP
5 2 (4.44%) C++
6 1 (2.22%) Bash Shell
6 1 (2.22%) PowerShell
6 1 (2.22%) T-SQL
6 1 (2.22%) TypeScript
Qualifications
1 20 (44.44%) Security Cleared
2 12 (26.67%) SC Cleared
3 3 (6.67%) BC Cleared
Quality Assurance & Compliance
1 1 (2.22%) SDET
System Software
1 5 (11.11%) Docker
2 2 (4.44%) VMware Infrastructure
2 2 (4.44%) vSphere
Systems Management
1 1 (2.22%) Kubernetes
Vendors
1 2 (4.44%) VMware
2 1 (2.22%) Microsoft