Period
to 22 July 2017

The following table provides summary statistics for contract job vacancies advertised in Norwich 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 22 July 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)
Norfolk > Norwich
6 months to
22 Jul 2017
Same period 2016 Same period 2015
Rank 19 30 27
Rank change year-on-year +11 -3 -7
Contract jobs citing TDD 21 9 4
As % of all contract IT jobs advertised in Norwich 9.01% 3.16% 1.81%
As % of the Processes & Methodologies category 11.11% 3.66% 2.37%
Number of daily rates quoted 11 8 2
Norwich median daily rate £400 £390 £376
Median daily rate % change year-on-year +2.56% +3.86% +25.17%
10th Percentile £325 £307 £347
90th Percentile £494 £415 £408
Norfolk median daily rate £450 £390 £388
% change year-on-year +15.38% +0.65% +29.17%
Number of hourly rates quoted 0 0 0
Norwich median hourly rate - - -
Norfolk median hourly rate - - -

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 Norwich with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Norwich
Contract job vacancies with a requirement for process and methodology skills 189 246 169
As % of all contract IT job vacancies advertised in Norwich 81.12% 86.32% 76.47%
Number of daily rates quoted 113 162 122
Norwich median daily rate £450 £425 £363
Median daily rate % change year-on-year +5.88% +17.24% +31.82%
10th Percentile £253 £275 £151
90th Percentile £548 £525 £536
Norfolk median daily rate £450 £400 £325
% change year-on-year +12.50% +23.08% +18.18%
Number of hourly rates quoted 2 7 13
Norwich median hourly rate £18.24 £22.25 £22.50
Median hourly rate % change year-on-year -18.02% -1.11% -18.18%
10th Percentile £12.11 £18.90 £15.25
90th Percentile £25.95 £27.61 £36.25
Norfolk median hourly rate £18.24 £22.25 £22.50
% change year-on-year -18.02% -1.11% -15.09%

TDD
Job Vacancy Trend in Norwich

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

Job vacancy trend for TDD in Norwich

TDD
Contractor Daily Rate Trend in Norwich

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

Contractor daily rate trend for TDD in Norwich

TDD
Contractor Daily Rate Histogram in Norwich

The daily rate distribution of IT jobs citing TDD in Norwich over the 6 months to 22 July 2017.

Contractor daily rate histogram for TDD in Norwich

For the 6 months to 22 July 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 Norwich region with a requirement for TDD.

1 17 (80.95%) Agile Software Development
2 16 (76.19%) Continuous Integration
2 16 (76.19%) BDD
3 15 (71.43%) Java
4 14 (66.67%) Scrum
5 12 (57.14%) Web Services
6 10 (47.62%) Software Engineering
7 9 (42.86%) Workflow
7 9 (42.86%) Multithreading
7 9 (42.86%) Kanban
7 9 (42.86%) Apache Hive
7 9 (42.86%) Hadoop
7 9 (42.86%) MapReduce
7 9 (42.86%) HBase
7 9 (42.86%) Big Data
7 9 (42.86%) Cloudera
7 9 (42.86%) Apache Flume
7 9 (42.86%) Apache Pig
7 9 (42.86%) Sqoop
7 9 (42.86%) Impala
7 9 (42.86%) Data Privacy
7 9 (42.86%) Analytical Skills
7 9 (42.86%) Apache Spark
7 9 (42.86%) Concurrent Programming
7 9 (42.86%) HiveQL
8 8 (38.10%) Jenkins
9 7 (33.33%) XML
10 6 (28.57%) C#
10 6 (28.57%) RESTful
10 6 (28.57%) Spring

TDD
Co-occurring IT Skills in Norwich 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 9 (42.86%) Apache Pig
1 9 (42.86%) Apache Spark
2 1 (4.76%) WebSphere
Applications
1 1 (4.76%) Microsoft Office
1 1 (4.76%) MS Visio
Communications & Networking
1 1 (4.76%) HTTP
1 1 (4.76%) LDAP
1 1 (4.76%) SSL
1 1 (4.76%) TCP/IP
Database & Business Intelligence
1 9 (42.86%) Apache Hive
1 9 (42.86%) Big Data
1 9 (42.86%) Hadoop
1 9 (42.86%) HBase
1 9 (42.86%) Impala
1 9 (42.86%) Sqoop
2 5 (23.81%) Relational Database
3 3 (14.29%) MarkLogic
3 3 (14.29%) MySQL
3 3 (14.29%) NoSQL
4 1 (4.76%) SQL Server
4 1 (4.76%) SQL Server Integration Services
4 1 (4.76%) SQL Server Reporting Services
Development Applications
1 8 (38.10%) Jenkins
2 4 (19.05%) Cucumber
2 4 (19.05%) JUnit
2 4 (19.05%) Team Foundation Server
3 3 (14.29%) Appium
3 3 (14.29%) Calabash
3 3 (14.29%) Mockito
3 3 (14.29%) SpecFlow
3 3 (14.29%) Subversion
4 1 (4.76%) Git (software)
4 1 (4.76%) Maven
4 1 (4.76%) VSS/SourceSafe
General
1 4 (19.05%) Finance
2 2 (9.52%) Publishing
Job Titles
1 18 (85.71%) Developer
2 9 (42.86%) Cloud Developer
2 9 (42.86%) Hadoop Developer
3 6 (28.57%) Java Developer
4 2 (9.52%) .NET Developer
4 2 (9.52%) Automation Tester
4 2 (9.52%) Test Automation Engineer
4 2 (9.52%) Test Engineer
4 2 (9.52%) Tester
4 2 (9.52%) Xamarin Developer
5 1 (4.76%) Analyst
5 1 (4.76%) Automation Test Analyst
5 1 (4.76%) Test Analyst
Libraries, Frameworks & Software Standards
1 12 (57.14%) Web Services
2 7 (33.33%) XML
3 6 (28.57%) RESTful
3 6 (28.57%) Spring
4 5 (23.81%) Hibernate
4 5 (23.81%) Java EE
5 3 (14.29%) Gherkin
5 3 (14.29%) JMS
5 3 (14.29%) JSON
6 2 (9.52%) .NET
6 2 (9.52%) HTML
6 2 (9.52%) REST
6 2 (9.52%) SOAP
6 2 (9.52%) XForms
6 2 (9.52%) XSLT
7 1 (4.76%) ASP.NET
7 1 (4.76%) jQuery
7 1 (4.76%) Silverlight
7 1 (4.76%) WCF
7 1 (4.76%) WPF
Miscellaneous
1 9 (42.86%) Analytical Skills
2 4 (19.05%) Mobile App
Operating Systems
1 4 (19.05%) Android
1 4 (19.05%) Apple iOS
Processes & Methodologies
1 17 (80.95%) Agile Software Development
2 16 (76.19%) BDD
2 16 (76.19%) Continuous Integration
3 14 (66.67%) Scrum
4 10 (47.62%) Software Engineering
5 9 (42.86%) Concurrent Programming
5 9 (42.86%) Data Privacy
5 9 (42.86%) Kanban
5 9 (42.86%) MapReduce
5 9 (42.86%) Multithreading
5 9 (42.86%) Workflow
6 4 (19.05%) OO
7 3 (14.29%) Exploratory Testing
7 3 (14.29%) Functional Testing
7 3 (14.29%) Mentoring
7 3 (14.29%) Pair Programming
7 3 (14.29%) Regression Testing
7 3 (14.29%) Release Management
7 3 (14.29%) SDLC
7 3 (14.29%) Test Automation
Programming Languages
1 15 (71.43%) Java
2 9 (42.86%) HiveQL
3 6 (28.57%) C#
4 3 (14.29%) Shell Script
4 3 (14.29%) SQL
5 2 (9.52%) JavaScript
6 1 (4.76%) T-SQL
Qualifications
1 2 (9.52%) Sun Certification
Quality Assurance & Compliance
1 1 (4.76%) QA
System Software
1 9 (42.86%) Apache Flume
Vendors
1 9 (42.86%) Cloudera
2 5 (23.81%) Xamarin
3 2 (9.52%) Sun
4 1 (4.76%) Microsoft