The following table provides summary statistics for contract job vacancies advertised in Cambridgeshire 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 27 June 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)
East of England / Cambridgeshire
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 12 34 26
Rank change year-on-year +22 -8  
Contract jobs citing TDD 53 24 57
As % of all contract IT jobs advertised in Cambridgeshire 9.03% 4.04% 7.22%
As % of the Processes & Methodologies category 11.28% 5.04% 9.12%
Number of daily rates quoted 16 11 18
Median daily rate £339 £375 £438
Median daily rate % change year-on-year -9.66% -14.28%  
90% offered a daily rate of more than £300 £325 £310
10% offered a daily rate of more than £476 £525 £458
UK excluding London median daily rate £420 £413 £375
% change year-on-year +1.81% +10.00%  
Number of hourly rates quoted 0 0 2
Median hourly rate - - £38.75
UK excluding London median hourly rate £41.50 £40.00 £43.75
% change year-on-year +3.75% -8.57%  

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 Cambridgeshire with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Cambridgeshire
Contract job vacancies with a requirement for process and methodology skills 470 476 625
As % of all contract IT job vacancies advertised in Cambridgeshire 80.07% 80.13% 79.21%
Number of daily rates quoted 222 272 371
Median daily rate £375 £400 £375
Median daily rate % change year-on-year -6.25% +6.66%  
90% offered a daily rate of more than £225 £325 £275
10% offered a daily rate of more than £550 £533 £500
UK excluding London median daily rate £415 £400 £385
% change year-on-year +3.75% +3.89%  
Number of hourly rates quoted 63 31 53
Median hourly rate £19.00 £37.50 £23.50
Median hourly rate % change year-on-year -49.33% +59.57%  
90% offered a hourly rate of more than £14.25 £15.00 £12.00
10% offered a hourly rate of more than £45.00 £45.00 £45.00
UK excluding London median hourly rate £34.00 £28.50 £30.00
% change year-on-year +19.29% -5.00%  

TDD
Job Vacancy Trend in Cambridgeshire

The job posting trend of jobs advertised in Cambridgeshire 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 Cambridgeshire

TDD
Contractor Daily Rate Trend in Cambridgeshire

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

Contractor daily rate trend for TDD in Cambridgeshire

TDD
Contractor Daily Rate Histogram in Cambridgeshire

The daily rate distribution of IT jobs citing TDD in Cambridgeshire over the 3 months to 27 June 2017.

Contractor daily rate histogram for TDD in Cambridgeshire

TDD
Contractor Hourly Rate Trend in Cambridgeshire

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Cambridgeshire.

Contractor hourly rate trend for TDD in Cambridgeshire

TDD
Contract Job Locations in Cambridgeshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Cambridgeshire region over the 3 months to 27 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Cambridge +2 14 £381 -4.68% 13
Peterborough +5 7 £300 -7.69% 4
TDD
East of England

For the 6 months to 27 June 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 Cambridgeshire region with a requirement for TDD.

1 75 (88.24%) Agile Software Development
2 53 (62.35%) .NET
3 44 (51.76%) E-Commerce
4 42 (49.41%) Node.js
5 39 (45.88%) JavaScript
6 38 (44.71%) C#
7 30 (35.29%) Continuous Integration
7 30 (35.29%) Git (software)
8 24 (28.24%) HTML
8 24 (28.24%) CSS
9 23 (27.06%) REST
10 22 (25.88%) Docker
11 21 (24.71%) Java
11 21 (24.71%) Pair Programming
12 20 (23.53%) HTML5
13 18 (21.18%) KnockoutJS
14 17 (20.00%) JSON
14 17 (20.00%) Scrum
15 16 (18.82%) SQL
15 16 (18.82%) AngularJS
16 15 (17.65%) BDD
16 15 (17.65%) Atlassian Bamboo
17 14 (16.47%) XML
18 13 (15.29%) OO
18 13 (15.29%) SQL Server
18 13 (15.29%) Spring
18 13 (15.29%) Jenkins
19 12 (14.12%) XSLT
19 12 (14.12%) MVC
20 11 (12.94%) Microsoft

TDD
Co-occurring IT Skills in Cambridgeshire 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 (3.53%) Cloud Foundry
2 2 (2.35%) Tomcat
3 1 (1.18%) CMS
Applications
1 2 (2.35%) Adobe Illustrator
1 2 (2.35%) OmniGraffle
1 2 (2.35%) Photoshop
Business Applications
1 6 (7.06%) Payment Gateway
2 3 (3.53%) SDL Web 8
3 2 (2.35%) Oracle ERP
4 1 (1.18%) Oracle EBS R12
4 1 (1.18%) Oracle SCM
Cloud Services
1 10 (11.76%) IaaS
1 10 (11.76%) PaaS
2 7 (8.24%) Microsoft Azure
3 4 (4.71%) Amazon AWS
4 1 (1.18%) Amazon CloudSearch
4 1 (1.18%) Amazon S3
Communications & Networking
1 10 (11.76%) DNS
1 10 (11.76%) HTTP
1 10 (11.76%) SSL
1 10 (11.76%) TCP/IP
Database & Business Intelligence
1 13 (15.29%) SQL Server
2 11 (12.94%) MongoDB
3 7 (8.24%) NoSQL
4 6 (7.06%) PostgreSQL
5 4 (4.71%) Relational Database
6 1 (1.18%) RDBMS
6 1 (1.18%) SQL Server 2008
6 1 (1.18%) SQL Server 2012
Development Applications
1 30 (35.29%) Git (software)
2 15 (17.65%) Atlassian Bamboo
3 13 (15.29%) Jenkins
4 9 (10.59%) Mercurial
5 7 (8.24%) JUnit
5 7 (8.24%) Selenium
6 6 (7.06%) IntelliJ
6 6 (7.06%) Maven
6 6 (7.06%) Mockito
6 6 (7.06%) Moq
6 6 (7.06%) NUnit
6 6 (7.06%) Team Foundation Server
6 6 (7.06%) WebStorm
7 5 (5.88%) Cucumber
8 4 (4.71%) Grunt
8 4 (4.71%) gulp
8 4 (4.71%) Mocha
8 4 (4.71%) Subversion
9 3 (3.53%) Appium
9 3 (3.53%) Eclipse
General
1 2 (2.35%) Back Office
2 1 (1.18%) Banking
2 1 (1.18%) Finance
Job Titles
1 61 (71.76%) Developer
2 22 (25.88%) Node.js Developer
3 20 (23.53%) .NET Developer
4 18 (21.18%) C# Developer
4 18 (21.18%) Full Stack Developer
5 16 (18.82%) C# .NET Developer
6 14 (16.47%) JavaScript Developer
7 8 (9.41%) SQL Developer
8 7 (8.24%) C# WCF Developer
8 7 (8.24%) Digital Developer
8 7 (8.24%) E-Commerce Developer
8 7 (8.24%) Java Developer
8 7 (8.24%) Platform Engineer
8 7 (8.24%) SQL Server Developer
8 7 (8.24%) WCF Developer
8 7 (8.24%) Web Developer
8 7 (8.24%) XML Developer
8 7 (8.24%) XML XSLT Developer
9 6 (7.06%) Analyst
10 5 (5.88%) Software Engineer
Libraries, Frameworks & Software Standards
1 53 (62.35%) .NET
2 42 (49.41%) Node.js
3 24 (28.24%) CSS
3 24 (28.24%) HTML
4 23 (27.06%) REST
5 20 (23.53%) HTML5
6 18 (21.18%) KnockoutJS
7 17 (20.00%) JSON
8 16 (18.82%) AngularJS
9 14 (16.47%) XML
10 13 (15.29%) Spring
11 12 (14.12%) XSLT
12 11 (12.94%) CSS3
13 10 (11.76%) jQuery
14 9 (10.59%) Backbone.js
14 9 (10.59%) React
15 8 (9.41%) WCF
16 7 (8.24%) .NET Framework
16 7 (8.24%) RESTful
16 7 (8.24%) XML Schema
Miscellaneous
1 11 (12.94%) Greenfield Project
2 6 (7.06%) User Experience
3 3 (3.53%) Mobile App
4 2 (2.35%) Graphic Design
4 2 (2.35%) Life Science
5 1 (1.18%) Analytical Skills
5 1 (1.18%) Computer Science
5 1 (1.18%) Enterprise Software
Operating Systems
1 10 (11.76%) CoreOS
1 10 (11.76%) Linux
1 10 (11.76%) Ubuntu
2 9 (10.59%) Windows
Processes & Methodologies
1 75 (88.24%) Agile Software Development
2 44 (51.76%) E-Commerce
3 30 (35.29%) Continuous Integration
4 21 (24.71%) Pair Programming
5 17 (20.00%) Scrum
6 15 (17.65%) BDD
7 13 (15.29%) OO
8 12 (14.12%) MVC
9 11 (12.94%) Kanban
9 11 (12.94%) SOA
10 10 (11.76%) Continuous Delivery
11 9 (10.59%) BPMN
12 7 (8.24%) Domain-Driven Design
12 7 (8.24%) SDLC
13 6 (7.06%) Information Security
13 6 (7.06%) Open Source
13 6 (7.06%) Performance Tuning
13 6 (7.06%) Web Development
14 5 (5.88%) Software Engineering
14 5 (5.88%) Test Automation
Programming Languages
1 39 (45.88%) JavaScript
2 38 (44.71%) C#
3 21 (24.71%) Java
4 16 (18.82%) SQL
5 10 (11.76%) Python
6 7 (8.24%) Scala
7 6 (7.06%) Groovy
7 6 (7.06%) TypeScript
8 4 (4.71%) ES6
8 4 (4.71%) PHP
9 1 (1.18%) C
9 1 (1.18%) C++
9 1 (1.18%) Clojure
9 1 (1.18%) Dart
9 1 (1.18%) Elixir
9 1 (1.18%) Haskell
9 1 (1.18%) Kotlin
9 1 (1.18%) Objective-C
9 1 (1.18%) PL/SQL
9 1 (1.18%) Rust
Qualifications
1 4 (4.71%) Degree
Quality Assurance & Compliance
1 5 (5.88%) QA
System Software
1 22 (25.88%) Docker
Systems Management
1 10 (11.76%) Opscode Chef
Vendors
1 11 (12.94%) Microsoft
2 9 (10.59%) Oracle
3 1 (1.18%) Google
3 1 (1.18%) Twitter
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