Period
to 21 January 2020

The following table provides summary statistics for contract job vacancies advertised in Hounslow 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 21 January 2020 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 London > Hounslow
6 months to
21 Jan 2020
Same period 2019 Same period 2018
Rank 32 19 3
Rank change year-on-year -13 -16 +16
Contract jobs citing TDD 9 25 71
As % of all contract IT jobs advertised in Hounslow 2.78% 6.83% 22.68%
As % of the Processes & Methodologies category 3.16% 7.46% 25.36%
Number of daily rates quoted 8 18 65
Hounslow median daily rate £515 £513 £525
Median daily rate % change year-on-year +0.49% -2.38% +23.53%
10th Percentile £500 £450 £393
90th Percentile £556 £608 £613
West London median daily rate £530 £525 £525
% change year-on-year +0.95% - +12.90%
Number of hourly rates quoted 0 0 0
Hounslow median hourly rate - - -
West London 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 Hounslow with a requirement for process or methodology skills.

All Process and Methodology Skills
Hounslow
Contract vacancies with a requirement for process or methodology skills 285 335 280
As % of all contract IT jobs advertised in Hounslow 87.96% 91.53% 89.46%
Number of daily rates quoted 214 200 182
Hounslow median daily rate £465 £500 £518
Median daily rate % change year-on-year -7.00% -3.38% +21.76%
10th Percentile £256 £232 £305
90th Percentile £588 £611 £611
West London median daily rate £468 £450 £460
% change year-on-year +3.89% -2.17% +8.24%
Number of hourly rates quoted 10 18 6
Hounslow median hourly rate £13.63 £29.75 £21.75
Median hourly rate % change year-on-year -54.20% +36.78% -13.00%
10th Percentile £11.11 £10.75 £13.88
90th Percentile £26.20 £115.00 £46.99
West London median hourly rate £31.25 £42.50 £23.94
% change year-on-year -26.47% +77.56% -4.26%

TDD
Job Vacancy Trend in Hounslow

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

Job vacancy trend for TDD in Hounslow

TDD
Contractor Daily Rate Trend in Hounslow

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

Contractor daily rate trend for TDD in Hounslow

TDD
Contract Job Locations in Hounslow

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Hounslow region over the 6 months to 21 January 2020. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Feltham -1 8 £500 +1.01%
Osterley 0 1 £588 +17.50%
TDD
West London

For the 6 months to 21 January 2020, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the Hounslow region with a requirement for TDD.

1 9 (100.00%) Agile Software Development
2 8 (88.89%) Python
2 8 (88.89%) Docker
2 8 (88.89%) DevOps
3 4 (44.44%) Microservices
3 4 (44.44%) GitLab
3 4 (44.44%) User Stories
3 4 (44.44%) Low Latency
3 4 (44.44%) Continuous Deployment
3 4 (44.44%) Data Engineering
3 4 (44.44%) Data Modelling
3 4 (44.44%) Java
3 4 (44.44%) Data Analysis
3 4 (44.44%) Security Cleared
3 4 (44.44%) RESTful
3 4 (44.44%) AWS
3 4 (44.44%) Open Source
3 4 (44.44%) RabbitMQ
3 4 (44.44%) High Availability
3 4 (44.44%) Kafka
3 4 (44.44%) GitHub
4 3 (33.33%) Defensive Programming
4 3 (33.33%) Test Automation
4 3 (33.33%) Degree
4 3 (33.33%) Computer Science
4 3 (33.33%) Software Engineering
4 3 (33.33%) Web Services
4 3 (33.33%) Continuous Delivery
5 2 (22.22%) SC Cleared
5 2 (22.22%) HTML

TDD
Co-occurring IT Skills in Hounslow 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:

Cloud Services
1 4 (44.44%) AWS
1 4 (44.44%) GitHub
Development Applications
1 4 (44.44%) GitLab
General
1 1 (11.11%) Advertising
Job Titles
1 4 (44.44%) AWS DevOps
1 4 (44.44%) AWS DevOps Engineer
1 4 (44.44%) AWS Engineer
1 4 (44.44%) Data Engineer
1 4 (44.44%) Developer
1 4 (44.44%) DevOps Engineer
1 4 (44.44%) Python Engineer
2 3 (33.33%) Java Developer
2 3 (33.33%) Python Developer
3 2 (22.22%) Full Stack Developer
4 1 (11.11%) JavaScript Developer
4 1 (11.11%) SC Cleared Java Developer
4 1 (11.11%) SC Cleared Software Engineer
4 1 (11.11%) Senior Software Engineer
4 1 (11.11%) Software Engineer
Libraries, Frameworks & Software Standards
1 4 (44.44%) Kafka
1 4 (44.44%) RabbitMQ
1 4 (44.44%) RESTful
2 3 (33.33%) Web Services
3 2 (22.22%) CSS
3 2 (22.22%) HTML
Processes & Methodologies
1 9 (100.00%) Agile Software Development
2 8 (88.89%) DevOps
3 4 (44.44%) Continuous Deployment
3 4 (44.44%) Data Analysis
3 4 (44.44%) Data Engineering
3 4 (44.44%) Data Modelling
3 4 (44.44%) High Availability
3 4 (44.44%) Low Latency
3 4 (44.44%) Microservices
3 4 (44.44%) Open Source
3 4 (44.44%) User Stories
4 3 (33.33%) Computer Science
4 3 (33.33%) Continuous Delivery
4 3 (33.33%) Defensive Programming
4 3 (33.33%) Software Engineering
4 3 (33.33%) Test Automation
5 2 (22.22%) BDD
6 1 (11.11%) Analytics
6 1 (11.11%) Data Analytics
6 1 (11.11%) Functional Testing
Programming Languages
1 8 (88.89%) Python
2 4 (44.44%) Java
3 2 (22.22%) JavaScript
4 1 (11.11%) Java 8
Qualifications
1 4 (44.44%) Security Cleared
2 3 (33.33%) Degree
3 2 (22.22%) SC Cleared
System Software
1 8 (88.89%) Docker