Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies advertised in Watford 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 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)
Hertfordshire > Watford
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 26 36 24
Rank change year-on-year +10 -12 +13
Contract jobs citing TDD 25 6 12
As % of all contract IT jobs advertised in Watford 5.73% 2.08% 4.88%
As % of the Processes & Methodologies category 6.58% 2.70% 6.74%
Number of daily rates quoted 44 5 2
Watford median daily rate £388 £525 £400
Median daily rate % change year-on-year -26.19% +31.25% -11.11%
10th Percentile £356 £513 £375
90th Percentile £496 £538 £425
Hertfordshire median daily rate £388 £525 £500
% change year-on-year -26.19% +5.00% +25.00%
Number of hourly rates quoted 0 0 0
Watford median hourly rate - - -
Hertfordshire median hourly rate - - -

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 Watford with a requirement for process or methodology skills.

All Process and Methodology Skills
Watford
Contract vacancies with a requirement for process or methodology skills 380 222 178
As % of all contract IT jobs advertised in Watford 87.16% 77.08% 72.36%
Number of daily rates quoted 169 110 76
Watford median daily rate £425 £400 £363
Median daily rate % change year-on-year +6.25% +10.34% -3.33%
10th Percentile £224 £205 £211
90th Percentile £588 £532 £488
Hertfordshire median daily rate £400 £413 £400
% change year-on-year -3.03% +3.13% +6.67%
Number of hourly rates quoted 13 6 11
Watford median hourly rate £18.00 £14.25 £13.00
Median hourly rate % change year-on-year +26.32% +9.62% +4.00%
10th Percentile £14.45 £12.75 £8.50
90th Percentile £40.00 £15.50 £37.50
Hertfordshire median hourly rate £19.00 £32.25 £21.00
% change year-on-year -41.09% +53.57% +31.25%

TDD
Job Vacancy Trend in Watford

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

Job vacancy trend for TDD in Watford

TDD
Contractor Daily Rate Trend in Watford

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

Contractor daily rate trend for TDD in Watford

TDD
Contractor Daily Rate Histogram in Watford

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

Contractor daily rate histogram for TDD in Watford

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

1 25 (100.00%) Agile Software Development
2 14 (56.00%) Java
3 12 (48.00%) MVC
4 11 (44.00%) Spring
5 10 (40.00%) Pair Programming
6 9 (36.00%) Scrum
6 9 (36.00%) Finance
6 9 (36.00%) SOLID
7 8 (32.00%) SOAP
7 8 (32.00%) Web Services
7 8 (32.00%) BDD
7 8 (32.00%) REST
8 7 (28.00%) Git (software)
8 7 (28.00%) Continuous Integration
8 7 (28.00%) Kanban
8 7 (28.00%) Microservices
8 7 (28.00%) Spring Boot
8 7 (28.00%) React
9 6 (24.00%) SQL Server
9 6 (24.00%) CSS
9 6 (24.00%) C#
9 6 (24.00%) HTML
9 6 (24.00%) .NET
9 6 (24.00%) E-Commerce
9 6 (24.00%) Microsoft
9 6 (24.00%) SDLC
9 6 (24.00%) Ruby
9 6 (24.00%) Web Development
9 6 (24.00%) WCF
9 6 (24.00%) Team Foundation Server

TDD
Co-occurring IT Skills in Watford 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 5 (20.00%) Apache
1 5 (20.00%) Tomcat
2 4 (16.00%) MQSeries
Cloud Services
1 3 (12.00%) Amazon AWS
Communications & Networking
1 4 (16.00%) Internet
Database & Business Intelligence
1 6 (24.00%) SQL Server
2 5 (20.00%) MySQL
2 5 (20.00%) SQL Server Integration Services
2 5 (20.00%) SQL Server Reporting Services
3 4 (16.00%) PostgreSQL
3 4 (16.00%) Redis
4 3 (12.00%) MongoDB
5 1 (4.00%) Data Warehouse
Development Applications
1 7 (28.00%) Git (software)
2 6 (24.00%) Team Foundation Server
3 4 (16.00%) Eclipse
3 4 (16.00%) JUnit
3 4 (16.00%) Log4j
3 4 (16.00%) Maven
3 4 (16.00%) Mockito
3 4 (16.00%) Subversion
3 4 (16.00%) Talend Open Studio
4 3 (12.00%) Grunt
4 3 (12.00%) gulp
4 3 (12.00%) IntelliJ
5 1 (4.00%) Cucumber
5 1 (4.00%) GitLab
5 1 (4.00%) JIRA
5 1 (4.00%) Selenium
General
1 9 (36.00%) Finance
2 4 (16.00%) Games
3 1 (4.00%) Back Office
3 1 (4.00%) Front Office
Job Titles
1 18 (72.00%) Developer
2 7 (28.00%) Java Developer
3 6 (24.00%) .NET Developer
3 6 (24.00%) ASP.NET MVC Developer
3 6 (24.00%) C# .NET Developer
3 6 (24.00%) C# Developer
3 6 (24.00%) SQL Developer
3 6 (24.00%) SQL Server Developer
4 5 (20.00%) C# WCF Developer
4 5 (20.00%) Full Stack Developer
4 5 (20.00%) Ruby Developer
4 5 (20.00%) SSIS Developer
4 5 (20.00%) SSRS Developer
4 5 (20.00%) WCF Developer
5 4 (16.00%) Ruby on Rails Developer
5 4 (16.00%) Technical Leader
6 2 (8.00%) Java Web Developer
6 2 (8.00%) Web Developer
7 1 (4.00%) Senior Developer
7 1 (4.00%) Tester
Libraries, Frameworks & Software Standards
1 11 (44.00%) Spring
2 8 (32.00%) REST
2 8 (32.00%) SOAP
2 8 (32.00%) Web Services
3 7 (28.00%) React
3 7 (28.00%) Spring Boot
4 6 (24.00%) .NET
4 6 (24.00%) CSS
4 6 (24.00%) HTML
4 6 (24.00%) HTML5
4 6 (24.00%) WCF
5 5 (20.00%) ASP.NET Web API
5 5 (20.00%) J2EE
5 5 (20.00%) Ruby on Rails
6 4 (16.00%) ActiveMQ
6 4 (16.00%) AngularJS
6 4 (16.00%) Apache Camel
6 4 (16.00%) EJB
6 4 (16.00%) JSON
6 4 (16.00%) Spring Security
Miscellaneous
1 5 (20.00%) Enterprise Software
Operating Systems
1 5 (20.00%) Unix
2 4 (16.00%) HPUX
2 4 (16.00%) Linux
2 4 (16.00%) Solaris
Processes & Methodologies
1 25 (100.00%) Agile Software Development
2 12 (48.00%) MVC
3 10 (40.00%) Pair Programming
4 9 (36.00%) Scrum
4 9 (36.00%) SOLID
5 8 (32.00%) BDD
6 7 (28.00%) Continuous Integration
6 7 (28.00%) Kanban
6 7 (28.00%) Microservices
7 6 (24.00%) E-Commerce
7 6 (24.00%) SDLC
7 6 (24.00%) Web Development
8 5 (20.00%) ETL
9 4 (16.00%) Continuous Delivery
9 4 (16.00%) Dependency Management
9 4 (16.00%) Open Source
9 4 (16.00%) RAD
9 4 (16.00%) Test Automation
10 3 (12.00%) Digital Transformation Programme
10 3 (12.00%) Front End Development
Programming Languages
1 14 (56.00%) Java
2 6 (24.00%) C#
2 6 (24.00%) Ruby
3 4 (16.00%) SQL
4 3 (12.00%) Groovy
4 3 (12.00%) JavaScript
5 1 (4.00%) Clojure
5 1 (4.00%) Go
5 1 (4.00%) Python
5 1 (4.00%) TypeScript
Quality Assurance & Compliance
1 4 (16.00%) QA
System Software
1 1 (4.00%) Docker
Systems Management
1 4 (16.00%) Ansible
2 1 (4.00%) Opscode Chef
Vendors
1 6 (24.00%) Microsoft
2 4 (16.00%) IBM
2 4 (16.00%) Talend
3 3 (12.00%) New Relic
4 1 (4.00%) Atlassian
4 1 (4.00%) Oracle
4 1 (4.00%) Teradata