The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for ATDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ATDD over the 3 months to 28 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.

Acceptance Test-Driven Development (ATDD)
East of England / Hertfordshire
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 50 - -
Rank change year-on-year - 0  
Contract jobs citing ATDD 7 0 0
As % of all contract IT jobs advertised in Hertfordshire 1.19% - -
As % of the Processes & Methodologies category 1.53% - -
Number of daily rates quoted 4 0 0
Median daily rate £553 - -
UK excluding London median daily rate £498 £394 £338
% change year-on-year +26.34% +16.66%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

ATDD 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 Hertfordshire with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Hertfordshire
Contract job vacancies with a requirement for process and methodology skills 459 520 541
As % of all contract IT job vacancies advertised in Hertfordshire 77.80% 75.69% 76.41%
Number of daily rates quoted 245 274 282
Median daily rate £475 £425 £400
Median daily rate % change year-on-year +11.76% +6.25%  
90% offered a daily rate of more than £276 £305 £275
10% offered a daily rate of more than £613 £563 £544
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 30 34 31
Median hourly rate £45.00 £38.00 £16.25
Median hourly rate % change year-on-year +18.42% +133.84%  
90% offered a hourly rate of more than £27.50 £9.23 £10.45
10% offered a hourly rate of more than £52.50 £49.50 £37.60
UK excluding London median hourly rate £36.00 £38.50 £30.20
% change year-on-year -6.49% +27.48%  

ATDD
Job Vacancy Trend in Hertfordshire

The job posting trend of jobs advertised in Hertfordshire citing ATDD as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for ATDD in Hertfordshire

ATDD
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for ATDD in Hertfordshire

ATDD
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing ATDD in Hertfordshire over the 3 months to 28 March 2017.

Contractor daily rate histogram for ATDD in Hertfordshire

ATDD
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing ATDD within the Hertfordshire region over the 3 months to 28 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Letchworth - 1 - -
Rickmansworth - 1 - -
Welwyn Garden City - 1 £555 -
ATDD
East of England

For the 6 months to 28 March 2017, IT contractor jobs citing ATDD 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 Hertfordshire region with a requirement for ATDD.

1 26 (100.00%) Agile Software Development
2 25 (96.15%) Java
2 25 (96.15%) BDD
3 24 (92.31%) TDD
4 19 (73.08%) Maven
4 19 (73.08%) JIRA
4 19 (73.08%) Git (software)
5 18 (69.23%) QA
6 15 (57.69%) Jenkins
7 13 (50.00%) Gherkin
7 13 (50.00%) Cucumber
7 13 (50.00%) WebDriver
7 13 (50.00%) Selenium
7 13 (50.00%) Software Testing
8 12 (46.15%) Ant
8 12 (46.15%) OO
8 12 (46.15%) OOD
8 12 (46.15%) Puppet
8 12 (46.15%) Gradle
8 12 (46.15%) Opscode Chef
8 12 (46.15%) Ansible
8 12 (46.15%) DevOps
8 12 (46.15%) Data Structures
9 11 (42.31%) Algorithms
9 11 (42.31%) Complexity Analysis
9 11 (42.31%) Amazon AWS
9 11 (42.31%) JBehave
10 10 (38.46%) Scrum
10 10 (38.46%) Go
10 10 (38.46%) Rust

ATDD
Co-occurring IT Skills in Hertfordshire 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 7 (26.92%) Tomcat
2 5 (19.23%) Confluence
3 1 (3.85%) Apache
Cloud Services
1 11 (42.31%) Amazon AWS
Database & Business Intelligence
1 1 (3.85%) SQL Server
Development Applications
1 19 (73.08%) Git (software)
1 19 (73.08%) JIRA
1 19 (73.08%) Maven
2 15 (57.69%) Jenkins
3 13 (50.00%) Cucumber
3 13 (50.00%) Selenium
3 13 (50.00%) WebDriver
4 12 (46.15%) Ant
4 12 (46.15%) Gradle
5 11 (42.31%) JBehave
6 7 (26.92%) JUnit
6 7 (26.92%) SoapUI
7 3 (11.54%) Atlassian Bamboo
7 3 (11.54%) Mockito
7 3 (11.54%) Moq
7 3 (11.54%) TeamCity
8 1 (3.85%) FitNesse
8 1 (3.85%) Protractor
8 1 (3.85%) Robot Framework
8 1 (3.85%) Team Foundation Server
General
1 8 (30.77%) Finance
2 6 (23.08%) Retail
3 1 (3.85%) Legal
Job Titles
1 12 (46.15%) Developer
2 11 (42.31%) Java Developer
3 5 (19.23%) Java Engineer
4 4 (15.38%) Automation Tester
4 4 (15.38%) Developer in Test
4 4 (15.38%) Tester
5 3 (11.54%) Analyst
5 3 (11.54%) Automation Test Analyst
5 3 (11.54%) Test Analyst
6 2 (7.69%) Java Automation Tester
6 2 (7.69%) Java Software Engineer
6 2 (7.69%) Lead Developer
6 2 (7.69%) Lead Java Developer
6 2 (7.69%) Selenium Automation Tester
6 2 (7.69%) Selenium Tester
6 2 (7.69%) Senior Developer
6 2 (7.69%) Senior Java Developer
6 2 (7.69%) Software Developer
6 2 (7.69%) Software Engineer
6 2 (7.69%) Test Manager
Libraries, Frameworks & Software Standards
1 13 (50.00%) Gherkin
2 7 (26.92%) Hibernate
2 7 (26.92%) RESTful
2 7 (26.92%) Spring
3 1 (3.85%) .NET
3 1 (3.85%) .NET Framework
3 1 (3.85%) AngularJS
3 1 (3.85%) ASP.NET
3 1 (3.85%) ASP.NET MVC
3 1 (3.85%) ASP.NET Web API
3 1 (3.85%) Entity Framework
Miscellaneous
1 12 (46.15%) Data Structures
2 11 (42.31%) Algorithms
3 2 (7.69%) FMCG
4 1 (3.85%) Linux Command Line
Operating Systems
1 2 (7.69%) Linux
1 2 (7.69%) Unix
Processes & Methodologies
1 26 (100.00%) Agile Software Development
2 25 (96.15%) BDD
3 24 (92.31%) TDD
4 13 (50.00%) Software Testing
5 12 (46.15%) DevOps
5 12 (46.15%) OO
5 12 (46.15%) OOD
6 11 (42.31%) Complexity Analysis
7 10 (38.46%) Scrum
8 9 (34.62%) Continuous Delivery
8 9 (34.62%) Kanban
8 9 (34.62%) Test Automation
8 9 (34.62%) Test Strategy
9 8 (30.77%) Automation Testing
9 8 (30.77%) Non-Functional Testing
9 8 (30.77%) Open Source
10 7 (26.92%) High Availability
10 7 (26.92%) Software Engineering
11 5 (19.23%) Integration Testing
11 5 (19.23%) Regression Testing
Programming Languages
1 25 (96.15%) Java
2 10 (38.46%) Clojure
2 10 (38.46%) Go
2 10 (38.46%) Rust
3 8 (30.77%) F#
4 3 (11.54%) C#
5 2 (7.69%) Shell Script
6 1 (3.85%) JavaScript
6 1 (3.85%) SQL
Quality Assurance & Compliance
1 18 (69.23%) QA
2 2 (7.69%) SDET
Systems Management
1 12 (46.15%) Ansible
1 12 (46.15%) Opscode Chef
1 12 (46.15%) Puppet
Vendors
1 5 (19.23%) Atlassian