The table below looks at the statistics for TDD skills in IT contracts advertised for the Welwyn Garden City region. Included is a guide to the contractor rates offered in IT contracts that have cited TDD over the 3 months to 26 February 2017 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
26 Feb 2017
Same period 2016 Same period 2015
Test-Driven Development (TDD)
Hertfordshire / Welwyn Garden City
Rank 12 8 -
Rank change year-on-year
-4 -
Contract jobs citing TDD 5 2 0
As % of all contract IT jobs located in Welwyn Garden City 7.58% 4.17% -
As % of the Processes & Methodologies category 9.09% 7.14% -
Number of daily rates quoted 2 0 0
Median daily rate £531 - -
UK excluding London median daily rate £415 £400 £375
% change year-on-year
+3.75% +6.66%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £39.00 £40.00 £34.50
% change year-on-year
-2.50% +15.94%

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

Processes & Methodologies Category
Welwyn Garden City
Contract IT job ads with a match in the
Processes & Methodologies category
55 28 19
As % of all contract IT jobs located in Welwyn Garden City 83.33% 58.33% 65.52%
Number of daily rates quoted 26 9 8
Median daily rate £450 £450 £375
Median daily rate % change year-on-year
- +20.00%
90% offered a daily rate of more than £147 £325 £290
10% offered a daily rate of more than £600 £475 £389
UK excluding London median daily rate £408 £400 £399
% change year-on-year
+2.00% +0.24%
Number of hourly rates quoted 1 1 0
Median hourly rate £30.00 £9.23 -
Median hourly rate % change year-on-year
+225.02% -
UK excluding London median hourly rate £36.00 £40.00 £28.50
% change year-on-year
-10.00% +40.35%

TDD
Jobs Demand Trend in Welwyn Garden City

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

TDD Jobs Demand Trend in Welwyn Garden City

TDD
Daily Rate Trend in Welwyn Garden City

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

TDD Daily Rate Trend in Welwyn Garden City

TDD
Top 30 Related IT Skills in Welwyn Garden City

For the 6 months to 26 February 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 Welwyn Garden City region with a requirement for TDD.

1 12 (85.71%) Java
2 11 (78.57%) Agile Software Development
2 11 (78.57%) Git (software)
2 11 (78.57%) BDD
3 10 (71.43%) Amazon AWS
3 10 (71.43%) DevOps
3 10 (71.43%) JIRA
3 10 (71.43%) OO
4 8 (57.14%) OOD
4 8 (57.14%) Ant
4 8 (57.14%) QA
4 8 (57.14%) Maven
4 8 (57.14%) Ansible
4 8 (57.14%) Opscode Chef
4 8 (57.14%) ATDD
4 8 (57.14%) Gradle
4 8 (57.14%) Jenkins
4 8 (57.14%) Puppet
4 8 (57.14%) Data Structures
4 8 (57.14%) Algorithms
4 8 (57.14%) Complexity Analysis
5 7 (50.00%) Go
5 7 (50.00%) Software Engineering
6 6 (42.86%) Rust
6 6 (42.86%) Clojure
7 5 (35.71%) REST
7 5 (35.71%) Retail
7 5 (35.71%) C#
8 4 (28.57%) JavaScript
8 4 (28.57%) XML

TDD
Top Related IT Skills in Welwyn Garden City 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 (14.29%) IIS
2 1 (7.14%) Apache Spark
2 1 (7.14%) Elasticsearch
2 1 (7.14%) nginx
Cloud Services
1 10 (71.43%) Amazon AWS
Communications & Networking
1 2 (14.29%) TCP/IP
Database & Business Intelligence
1 2 (14.29%) Relational Database
1 2 (14.29%) SQL Server
1 2 (14.29%) SQL Server 2012
2 1 (7.14%) Hadoop
2 1 (7.14%) MongoDB
2 1 (7.14%) MySQL
2 1 (7.14%) NoSQL
2 1 (7.14%) Redis
Development Applications
1 11 (78.57%) Git (software)
2 10 (71.43%) JIRA
3 8 (57.14%) Ant
3 8 (57.14%) Gradle
3 8 (57.14%) Jenkins
3 8 (57.14%) Maven
4 2 (14.29%) Atlassian Bamboo
4 2 (14.29%) FxCop
4 2 (14.29%) Moq
4 2 (14.29%) ReSharper
4 2 (14.29%) StyleCop
5 1 (7.14%) Vagrant
General
1 5 (35.71%) Retail
Job Titles
1 9 (64.29%) Developer
2 7 (50.00%) Java Developer
3 3 (21.43%) Architect
3 3 (21.43%) Java Engineer
3 3 (21.43%) Lead Developer
3 3 (21.43%) Lead Java Developer
4 2 (14.29%) .NET Developer
4 2 (14.29%) ASP.NET Developer
4 2 (14.29%) ASP.NET MVC Developer
4 2 (14.29%) AWS Architect
4 2 (14.29%) C# .NET Developer
4 2 (14.29%) C# ASP.NET Developer
4 2 (14.29%) C# Developer
4 2 (14.29%) Java Architect
4 2 (14.29%) Java Software Engineer
4 2 (14.29%) Software Engineer
5 1 (7.14%) JavaScript Developer
5 1 (7.14%) Lead Software Developer
5 1 (7.14%) Senior Java Developer
5 1 (7.14%) Software Development Engineer
Libraries, Frameworks & Software Standards
1 5 (35.71%) REST
2 4 (28.57%) XML
3 3 (21.43%) CSS
3 3 (21.43%) HTML
3 3 (21.43%) JSON
3 3 (21.43%) Spring
4 2 (14.29%) .NET
4 2 (14.29%) .NET Framework
4 2 (14.29%) ADO.NET
4 2 (14.29%) ASP.NET
4 2 (14.29%) ASP.NET Web API
4 2 (14.29%) AutoMapper
4 2 (14.29%) Dapper ORM
4 2 (14.29%) Entity Framework
4 2 (14.29%) LINQ
4 2 (14.29%) NHibernate
4 2 (14.29%) SOAP
4 2 (14.29%) WCF
4 2 (14.29%) XSL
4 2 (14.29%) XSLT
Miscellaneous
1 8 (57.14%) Algorithms
1 8 (57.14%) Data Structures
2 2 (14.29%) Contactless
2 2 (14.29%) EMV
2 2 (14.29%) FMCG
2 2 (14.29%) iPad
Operating Systems
1 1 (7.14%) Linux
Processes & Methodologies
1 11 (78.57%) Agile Software Development
1 11 (78.57%) BDD
2 10 (71.43%) DevOps
2 10 (71.43%) OO
3 8 (57.14%) ATDD
3 8 (57.14%) Complexity Analysis
3 8 (57.14%) OOD
4 7 (50.00%) Software Engineering
5 4 (28.57%) E-Commerce
5 4 (28.57%) Refactoring
5 4 (28.57%) SOLID
6 3 (21.43%) Microservices
6 3 (21.43%) MVC
7 2 (14.29%) Code Coverage
7 2 (14.29%) Continuous Delivery
7 2 (14.29%) Dependency Injection
7 2 (14.29%) OOP
7 2 (14.29%) Open Source
7 2 (14.29%) Scrum
8 1 (7.14%) SDLC
Programming Languages
1 12 (85.71%) Java
2 7 (50.00%) Go
3 6 (42.86%) Clojure
3 6 (42.86%) Rust
4 5 (35.71%) C#
5 4 (28.57%) JavaScript
6 3 (21.43%) F#
7 2 (14.29%) VBScript
8 1 (7.14%) C++
8 1 (7.14%) Lua
8 1 (7.14%) Python
8 1 (7.14%) Scala
8 1 (7.14%) SQL
Quality Assurance & Compliance
1 8 (57.14%) QA
System Software
1 1 (7.14%) Docker
Systems Management
1 8 (57.14%) Ansible
1 8 (57.14%) Opscode Chef
1 8 (57.14%) Puppet
Vendors
1 2 (14.29%) Atlassian