The following table provides summary statistics for contract job vacancies advertised in Birmingham 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)
West Midlands / Birmingham
Rank 27 35 51
Rank change year-on-year +8 +16  
Contract jobs citing TDD 32 22 8
As % of all contract IT jobs advertised in Birmingham 4.93% 3.42% 1.12%
As % of the Processes & Methodologies category 6.08% 4.21% 1.47%
Number of daily rates quoted 21 15 6
Median daily rate £425 £350 £375
Median daily rate % change year-on-year +21.42% -6.66%  
90% offered a daily rate of more than £338 £310 £313
10% offered a daily rate of more than £500 £450 £400
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 Birmingham with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Birmingham
Contract job vacancies with a requirement for process and methodology skills 526 523 546
As % of all contract IT job vacancies advertised in Birmingham 81.05% 81.21% 76.26%
Number of daily rates quoted 356 329 334
Median daily rate £421 £376 £375
Median daily rate % change year-on-year +12.18% +0.13%  
90% offered a daily rate of more than £275 £250 £250
10% offered a daily rate of more than £513 £525 £501
UK excluding London median daily rate £410 £400 £400
% change year-on-year +2.50% -  
Number of hourly rates quoted 9 16 18
Median hourly rate £14.63 £13.25 £22.50
Median hourly rate % change year-on-year +10.37% -41.11%  
90% offered a hourly rate of more than £12.00 £9.44 £8.78
10% offered a hourly rate of more than £39.25 £40.00 £26.00
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 Birmingham

The job posting trend of jobs advertised in Birmingham 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 Birmingham

TDD
Contractor Daily Rate Trend in Birmingham

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

Contractor daily rate trend for TDD in Birmingham

TDD
Contractor Daily Rate Histogram in Birmingham

The daily rate distribution of IT jobs citing TDD in Birmingham over the 3 months to 24 March 2017.

Contractor daily rate histogram for TDD in Birmingham

TDD
Contractor Hourly Rate Trend in Birmingham

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

Contractor hourly rate trend for TDD in Birmingham

TDD
Top 30 Related IT Skills in Birmingham

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 Birmingham region with a requirement for TDD.

1 34 (85.00%) Agile Software Development
2 23 (57.50%) BDD
3 17 (42.50%) JavaScript
4 16 (40.00%) AngularJS
4 16 (40.00%) React
5 13 (32.50%) HTML
6 12 (30.00%) Front End Development
7 11 (27.50%) CSS
7 11 (27.50%) Git (software)
8 10 (25.00%) SQL Server
9 9 (22.50%) .NET
9 9 (22.50%) Java
9 9 (22.50%) MVC
9 9 (22.50%) Scrum
10 8 (20.00%) jQuery
10 8 (20.00%) Web Development
11 7 (17.50%) Spring
11 7 (17.50%) Microsoft Azure
11 7 (17.50%) ASP.NET
12 6 (15.00%) Microsoft
12 6 (15.00%) C#
12 6 (15.00%) SQL
12 6 (15.00%) Team Foundation Server
12 6 (15.00%) Continuous Integration
12 6 (15.00%) Ember.js
12 6 (15.00%) ASP.NET MVC
13 5 (12.50%) Node.js
13 5 (12.50%) Angular 2
13 5 (12.50%) Selenium
14 4 (10.00%) WCF

TDD
Top Related IT Skills in Birmingham 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 (5.00%) Confluence
1 2 (5.00%) Elasticsearch
1 2 (5.00%) JBoss
1 2 (5.00%) Oracle SOA Suite
2 1 (2.50%) CMS
2 1 (2.50%) Drupal
Applications
1 4 (10.00%) MS Excel
2 2 (5.00%) Fireworks
2 2 (5.00%) Photoshop
Cloud Services
1 7 (17.50%) Microsoft Azure
2 3 (7.50%) Amazon AWS
3 1 (2.50%) AWS CloudFormation
3 1 (2.50%) GitHub
Communications & Networking
1 1 (2.50%) HTTP
1 1 (2.50%) Internet
1 1 (2.50%) VoIP
Database & Business Intelligence
1 10 (25.00%) SQL Server
2 3 (7.50%) Data Warehouse
2 3 (7.50%) SQL Server 2014
2 3 (7.50%) SQL Server 2016
2 3 (7.50%) SQL Server Reporting Services
3 2 (5.00%) MongoDB
3 2 (5.00%) PostgreSQL
3 2 (5.00%) QlikView
3 2 (5.00%) SQL Server Analysis Services
3 2 (5.00%) SQL Server Integration Services
4 1 (2.50%) Apache Cassandra
4 1 (2.50%) NoSQL
4 1 (2.50%) SQL Server 2012
Development Applications
1 11 (27.50%) Git (software)
2 6 (15.00%) Team Foundation Server
3 5 (12.50%) Selenium
4 4 (10.00%) Jenkins
5 3 (7.50%) Cucumber
5 3 (7.50%) Visual Studio
6 2 (5.00%) git-flow
6 2 (5.00%) Jasmine
6 2 (5.00%) JIRA
6 2 (5.00%) Karma Test Runner
6 2 (5.00%) Protractor
6 2 (5.00%) Subversion
6 2 (5.00%) Visual Studio Team System
7 1 (2.50%) Bitbucket
7 1 (2.50%) eggPlant
7 1 (2.50%) Gradle
7 1 (2.50%) JProfiler
7 1 (2.50%) Moq
7 1 (2.50%) SonarQube
7 1 (2.50%) WebDriver
General
1 3 (7.50%) Finance
2 2 (5.00%) Retail
3 1 (2.50%) Automotive
Job Titles
1 36 (90.00%) Developer
2 10 (25.00%) Front End Developer (Client-Side Developer)
3 7 (17.50%) .NET Developer
3 7 (17.50%) Senior Developer
4 6 (15.00%) Java Developer
4 6 (15.00%) JavaScript Developer
5 4 (10.00%) Senior .NET Developer
6 3 (7.50%) Angular Developer
6 3 (7.50%) Business Intelligence Developer
6 3 (7.50%) Web Developer
7 2 (5.00%) Applications Developer
7 2 (5.00%) Architect
7 2 (5.00%) C# Developer
7 2 (5.00%) Front End Web Developer (Client-Side Developer)
7 2 (5.00%) Node.js Developer
7 2 (5.00%) Senior C# Developer
7 2 (5.00%) Web Engineer
8 1 (2.50%) Applications Architect
8 1 (2.50%) Senior Software Engineer
8 1 (2.50%) Web Applications Developer
Libraries, Frameworks & Software Standards
1 16 (40.00%) AngularJS
1 16 (40.00%) React
2 13 (32.50%) HTML
3 11 (27.50%) CSS
4 9 (22.50%) .NET
5 8 (20.00%) jQuery
6 7 (17.50%) ASP.NET
6 7 (17.50%) Spring
7 6 (15.00%) ASP.NET MVC
7 6 (15.00%) Ember.js
8 5 (12.50%) Angular 2
8 5 (12.50%) Node.js
9 4 (10.00%) .NET Framework
9 4 (10.00%) Entity Framework
9 4 (10.00%) Hibernate
9 4 (10.00%) WCF
10 3 (7.50%) Express
10 3 (7.50%) Java EE
10 3 (7.50%) JPA
10 3 (7.50%) XML
Miscellaneous
1 3 (7.50%) User Experience
2 2 (5.00%) Computer Science
3 1 (2.50%) Enterprise Software
3 1 (2.50%) Fintech
Operating Systems
1 4 (10.00%) Linux
2 1 (2.50%) Mac OS X
2 1 (2.50%) Windows
Processes & Methodologies
1 34 (85.00%) Agile Software Development
2 23 (57.50%) BDD
3 12 (30.00%) Front End Development
4 9 (22.50%) MVC
4 9 (22.50%) Scrum
5 8 (20.00%) Web Development
6 6 (15.00%) Continuous Integration
7 4 (10.00%) SDLC
7 4 (10.00%) SOLID
8 3 (7.50%) Automated Testing
8 3 (7.50%) Business Intelligence
8 3 (7.50%) Kanban
8 3 (7.50%) Refactoring
8 3 (7.50%) Unit Testing
9 2 (5.00%) ETL
9 2 (5.00%) OO
9 2 (5.00%) Performance Monitoring
9 2 (5.00%) Planning Poker
9 2 (5.00%) SOA
9 2 (5.00%) Web Testing
Programming Languages
1 17 (42.50%) JavaScript
2 9 (22.50%) Java
3 6 (15.00%) C#
3 6 (15.00%) SQL
4 2 (5.00%) Groovy
4 2 (5.00%) PHP
4 2 (5.00%) PL/SQL
5 1 (2.50%) C++
5 1 (2.50%) Python
5 1 (2.50%) Ruby
5 1 (2.50%) Scala
5 1 (2.50%) VB.NET
Qualifications
1 2 (5.00%) SC Cleared
1 2 (5.00%) Security Cleared
1 2 (5.00%) Sun Certification
System Software
1 2 (5.00%) Docker
Systems Management
1 2 (5.00%) Ansible
2 1 (2.50%) Kubernetes
2 1 (2.50%) Opscode Chef
2 1 (2.50%) Terraform
Vendors
1 6 (15.00%) Microsoft
2 2 (5.00%) Oracle