Period
to 19 November 2017

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 6 months to 19 November 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)
West Midlands > Birmingham
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 32 47 38
Rank change year-on-year +15 -9 +32
Contract jobs citing TDD 78 59 44
As % of all contract IT jobs advertised in Birmingham 5.02% 3.88% 3.23%
As % of the Processes & Methodologies category 6.21% 4.75% 4.25%
Number of daily rates quoted 64 42 39
Birmingham median daily rate £338 £400 £375
Median daily rate % change year-on-year -15.68% +6.73% -
10th Percentile £219 £313 £311
90th Percentile £442 £436 £600
West Midlands median daily rate £400 £401 £375
% change year-on-year -0.12% +6.80% -
Number of hourly rates quoted 0 0 0
Birmingham median hourly rate - - -
West Midlands median hourly rate £33.00 - -

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Birmingham with a requirement for process or methodology skills.

All Process and Methodology Skills
Birmingham
Contract vacancies with a requirement for process or methodology skills 1257 1242 1036
As % of all contract IT jobs advertised in Birmingham 80.84% 81.66% 75.95%
Number of daily rates quoted 926 801 646
Birmingham median daily rate £400 £400 £375
Median daily rate % change year-on-year - +6.67% +4.02%
10th Percentile £231 £241 £225
90th Percentile £525 £550 £500
West Midlands median daily rate £400 £400 £375
% change year-on-year - +6.67% +6.99%
Number of hourly rates quoted 18 28 35
Birmingham median hourly rate £16.75 £17.25 £17.50
Median hourly rate % change year-on-year -2.90% -1.43% -12.50%
10th Percentile £12.30 £10.84 £10.17
90th Percentile £46.40 £30.33 £43.75
West Midlands median hourly rate £25.00 £17.75 £20.00
% change year-on-year +40.85% -11.25% -

TDD
Job Vacancy Trend in Birmingham

Job postings citing TDD as a percentage of all IT jobs advertised in Birmingham.

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 6 months to 19 November 2017.

Contractor daily rate histogram for TDD in Birmingham

For the 6 months to 19 November 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 68 (87.18%) Agile Software Development
2 40 (51.28%) Digital Media
3 38 (48.72%) Java
4 36 (46.15%) Spring
5 33 (42.31%) Maven
6 30 (38.46%) Web Services
7 28 (35.90%) JavaScript
7 28 (35.90%) HTML
8 27 (34.62%) CSS
8 27 (34.62%) BDD
9 26 (33.33%) HTML5
10 24 (30.77%) CSS3
10 24 (30.77%) jQuery
11 22 (28.21%) Front End Development
12 21 (26.92%) Java SE
13 18 (23.08%) Scrum
13 18 (23.08%) Git (software)
14 16 (20.51%) Continuous Integration
15 15 (19.23%) Kanban
16 14 (17.95%) Jenkins
17 12 (15.38%) Spring Boot
17 12 (15.38%) Mockito
17 12 (15.38%) RESTful
17 12 (15.38%) JUnit
18 11 (14.10%) SOAP
18 11 (14.10%) DbUnit
18 11 (14.10%) jMock
18 11 (14.10%) PowerMock
18 11 (14.10%) SonarQube
19 10 (12.82%) Mentoring

TDD
Co-occurring 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 3 (3.85%) Apache
1 3 (3.85%) Tomcat
2 2 (2.56%) Cloud Foundry
2 2 (2.56%) Elasticsearch
3 1 (1.28%) CMS
3 1 (1.28%) DNN
3 1 (1.28%) JBoss
3 1 (1.28%) WordPress
Applications
1 2 (2.56%) Photoshop
2 1 (1.28%) Adobe After Effects
2 1 (1.28%) Adobe Creative Suite
2 1 (1.28%) Adobe Illustrator
2 1 (1.28%) Fireworks
Business Applications
1 1 (1.28%) Dynamics CRM
Cloud Services
1 6 (7.69%) Amazon AWS
2 5 (6.41%) Amazon EC2
3 2 (2.56%) GitHub
3 2 (2.56%) Microsoft Azure
3 2 (2.56%) PaaS
Communications & Networking
1 1 (1.28%) HTTP
Database & Business Intelligence
1 4 (5.13%) PostgreSQL
1 4 (5.13%) SQL Server
2 3 (3.85%) MongoDB
2 3 (3.85%) MySQL
3 2 (2.56%) MariaDB
3 2 (2.56%) RDBMS
3 2 (2.56%) Relational Database
4 1 (1.28%) Big Data
4 1 (1.28%) Hadoop
4 1 (1.28%) Neo4j
4 1 (1.28%) Pentaho
4 1 (1.28%) SQL Server 2016
Development Applications
1 33 (42.31%) Maven
2 18 (23.08%) Git (software)
3 14 (17.95%) Jenkins
4 12 (15.38%) JUnit
4 12 (15.38%) Mockito
5 11 (14.10%) DbUnit
5 11 (14.10%) jMock
5 11 (14.10%) SonarQube
6 3 (3.85%) Cucumber
6 3 (3.85%) Visual Studio
7 2 (2.56%) JHipster
7 2 (2.56%) Liquibase
7 2 (2.56%) Mocha
7 2 (2.56%) SpecFlow
8 1 (1.28%) Babel
8 1 (1.28%) git-flow
8 1 (1.28%) Grunt
8 1 (1.28%) gulp
8 1 (1.28%) webpack
8 1 (1.28%) WebStorm
General
1 1 (1.28%) Games
1 1 (1.28%) Marketing
Job Titles
1 68 (87.18%) Developer
2 31 (39.74%) Java Developer
3 21 (26.92%) Front End Developer (Client-Side Developer)
4 20 (25.64%) Lead Developer
5 5 (6.41%) Full Stack Developer
6 4 (5.13%) Agile Developer
6 4 (5.13%) Agile Java Developer
6 4 (5.13%) PHP Developer
7 3 (3.85%) .NET Developer
7 3 (3.85%) J2EE Developer
7 3 (3.85%) Java/J2EE Developer
7 3 (3.85%) Senior Developer
7 3 (3.85%) Web Developer
8 2 (2.56%) Digital Project Manager
8 2 (2.56%) PHP Symfony Developer
8 2 (2.56%) Project Manager
8 2 (2.56%) Senior Java Developer
8 2 (2.56%) Symfony Developer
8 2 (2.56%) Technical Developer
8 2 (2.56%) Technical Leader
Libraries, Frameworks & Software Standards
1 36 (46.15%) Spring
2 30 (38.46%) Web Services
3 28 (35.90%) HTML
4 27 (34.62%) CSS
5 26 (33.33%) HTML5
6 24 (30.77%) CSS3
6 24 (30.77%) jQuery
7 21 (26.92%) Java SE
8 12 (15.38%) RESTful
8 12 (15.38%) Spring Boot
9 11 (14.10%) PowerMock
9 11 (14.10%) SOAP
10 10 (12.82%) AngularJS
11 9 (11.54%) .NET
11 9 (11.54%) J2EE
12 7 (8.97%) Apache Camel
12 7 (8.97%) REST
13 5 (6.41%) Node.js
13 5 (6.41%) Twitter Bootstrap
14 4 (5.13%) XML
Miscellaneous
1 40 (51.28%) Digital Media
2 7 (8.97%) User Experience
3 5 (6.41%) Greenfield Project
Operating Systems
1 3 (3.85%) Linux
2 2 (2.56%) Android
3 1 (1.28%) Apple iOS
3 1 (1.28%) CentOS
3 1 (1.28%) Ubuntu
Processes & Methodologies
1 68 (87.18%) Agile Software Development
2 27 (34.62%) BDD
3 22 (28.21%) Front End Development
4 18 (23.08%) Scrum
5 16 (20.51%) Continuous Integration
6 15 (19.23%) Kanban
7 10 (12.82%) Mentoring
8 9 (11.54%) Open Source
9 8 (10.26%) E-Commerce
9 8 (10.26%) OO
10 7 (8.97%) Microservices
10 7 (8.97%) MVC
11 5 (6.41%) Virtual Infrastructure
11 5 (6.41%) Web Development
12 4 (5.13%) Test Automation
13 3 (3.85%) Integration Testing
13 3 (3.85%) Open Source Development
13 3 (3.85%) SDLC
13 3 (3.85%) SOLID
13 3 (3.85%) User Stories
Programming Languages
1 38 (48.72%) Java
2 28 (35.90%) JavaScript
3 7 (8.97%) C#
4 4 (5.13%) PHP
4 4 (5.13%) SQL
5 1 (1.28%) Apple Swift
5 1 (1.28%) Groovy
5 1 (1.28%) Jython
5 1 (1.28%) PHP 4
5 1 (1.28%) PHP 5
5 1 (1.28%) Python
5 1 (1.28%) Ruby
5 1 (1.28%) Scala
Qualifications
1 6 (7.69%) Security Cleared
2 5 (6.41%) SC Cleared
3 4 (5.13%) DBS Check
4 3 (3.85%) Degree
Quality Assurance & Compliance
1 2 (2.56%) Disclosure Scotland
System Software
1 5 (6.41%) VMware Infrastructure
1 5 (6.41%) vSphere
2 3 (3.85%) Docker
Systems Management
1 1 (1.28%) Kubernetes
1 1 (1.28%) Puppet
Vendors
1 5 (6.41%) VMware
2 3 (3.85%) Zend
3 1 (1.28%) Adobe
3 1 (1.28%) Talend