Period
to 16 June 2019

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 16 June 2019 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
16 Jun 2019
Same period 2018 Same period 2017
Rank 16 3 13
Rank change year-on-year -13 +10 +13
Contract jobs citing TDD 20 51 14
As % of all contract IT jobs advertised in Hounslow 6.23% 18.68% 7.73%
As % of the Processes & Methodologies category 6.94% 20.99% 9.59%
Number of daily rates quoted 16 42 6
Hounslow median daily rate £565 £525 £470
Median daily rate % change year-on-year +7.62% +11.70% -6.23%
10th Percentile £520 £413 £445
90th Percentile £588 £613 £558
West London median daily rate £525 £525 £475
% change year-on-year - +10.53% -3.55%
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 288 243 146
As % of all contract IT jobs advertised in Hounslow 89.72% 89.01% 80.66%
Number of daily rates quoted 211 171 59
Hounslow median daily rate £450 £475 £400
Median daily rate % change year-on-year -5.26% +18.75% -9.09%
10th Percentile £281 £213 £224
90th Percentile £588 £575 £515
West London median daily rate £463 £475 £425
% change year-on-year -2.63% +11.76% +0.59%
Number of hourly rates quoted 9 8 4
Hounslow median hourly rate £13.00 £32.00 £28.75
Median hourly rate % change year-on-year -59.38% +11.30% +35.29%
10th Percentile £10.95 £19.75 £14.14
90th Percentile £22.86 £42.35 £43.00
West London median hourly rate £42.50 £37.75 £32.75
% change year-on-year +12.58% +15.27% +72.37%

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 16 June 2019. 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
Osterley -1 9 £575 +27.78%
Feltham -4 7 £550 +22.22%
Brentford -16 3 £565 -1.74% 1
TDD
West London

For the 6 months to 16 June 2019, 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 17 (85.00%) Agile Software Development
2 14 (70.00%) Java
3 11 (55.00%) Pair Programming
3 11 (55.00%) Test Automation
4 10 (50.00%) Amazon AWS
4 10 (50.00%) Scrum
5 9 (45.00%) Microservices
6 8 (40.00%) JUnit
6 8 (40.00%) HTTP
7 7 (35.00%) Unit Testing
7 7 (35.00%) GitHub
7 7 (35.00%) GitLab
7 7 (35.00%) Docker
7 7 (35.00%) DevOps
8 6 (30.00%) Public Cloud
8 6 (30.00%) Big Data
8 6 (30.00%) Root Cause Analysis
8 6 (30.00%) Defensive Programming
8 6 (30.00%) RESTful
8 6 (30.00%) Python
8 6 (30.00%) Web Services
9 5 (25.00%) Unix
9 5 (25.00%) TCP/IP
9 5 (25.00%) Spring
9 5 (25.00%) Apache
9 5 (25.00%) Django
9 5 (25.00%) Git (software)
9 5 (25.00%) Amazon S3
9 5 (25.00%) Continuous Integration
9 5 (25.00%) Guice

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:

Application Platforms
1 5 (25.00%) Apache
Cloud Services
1 10 (50.00%) Amazon AWS
2 7 (35.00%) GitHub
3 5 (25.00%) Amazon S3
Communications & Networking
1 8 (40.00%) HTTP
2 5 (25.00%) TCP/IP
Database & Business Intelligence
1 6 (30.00%) Big Data
2 3 (15.00%) MongoDB
3 2 (10.00%) PostgreSQL
3 2 (10.00%) Redis
4 1 (5.00%) Apache Cassandra
Development Applications
1 8 (40.00%) JUnit
2 7 (35.00%) GitLab
3 5 (25.00%) Git (software)
3 5 (25.00%) Jenkins
3 5 (25.00%) Mockito
4 3 (15.00%) Cucumber
4 3 (15.00%) Gatling
4 3 (15.00%) TeamCity
5 1 (5.00%) Gradle
Job Titles
1 19 (95.00%) Developer
2 12 (60.00%) Java Developer
3 5 (25.00%) AWS Engineer
3 5 (25.00%) Backend Developer
3 5 (25.00%) Django Developer
3 5 (25.00%) Python Developer
3 5 (25.00%) Python/Django Developer
4 4 (20.00%) Agile Developer
4 4 (20.00%) Agile Java Developer
4 4 (20.00%) AWS Developer
4 4 (20.00%) AWS Software Engineer
4 4 (20.00%) Big Data Developer
4 4 (20.00%) Big Data Engineer
4 4 (20.00%) Big Data Software Engineer
4 4 (20.00%) Developer/Software Engineer
4 4 (20.00%) Java Engineer
4 4 (20.00%) Java Software Developer
4 4 (20.00%) Java Software Engineer
4 4 (20.00%) Python Engineer
4 4 (20.00%) Python Software Engineer
Libraries, Frameworks & Software Standards
1 6 (30.00%) RESTful
1 6 (30.00%) Web Services
2 5 (25.00%) Django
2 5 (25.00%) Guice
2 5 (25.00%) Spring
3 3 (15.00%) Akka
4 2 (10.00%) Kafka
4 2 (10.00%) RabbitMQ
4 2 (10.00%) React
5 1 (5.00%) JMS
5 1 (5.00%) Qt
5 1 (5.00%) REST
Miscellaneous
1 6 (30.00%) Public Cloud
2 1 (5.00%) Data Centre
Operating Systems
1 5 (25.00%) Unix
2 2 (10.00%) Linux
3 1 (5.00%) Windows
Processes & Methodologies
1 17 (85.00%) Agile Software Development
2 11 (55.00%) Pair Programming
2 11 (55.00%) Test Automation
3 10 (50.00%) Scrum
4 9 (45.00%) Microservices
5 7 (35.00%) DevOps
5 7 (35.00%) Unit Testing
6 6 (30.00%) Defensive Programming
6 6 (30.00%) Root Cause Analysis
7 5 (25.00%) Continuous Integration
8 4 (20.00%) Continuous Deployment
8 4 (20.00%) Software Engineering
8 4 (20.00%) User Stories
9 3 (15.00%) Mentoring
9 3 (15.00%) Problem-Solving
10 2 (10.00%) Continuous Delivery
10 2 (10.00%) Migration
10 2 (10.00%) Open Source
10 2 (10.00%) Personalization
11 1 (5.00%) Software Architecture
Programming Languages
1 14 (70.00%) Java
2 6 (30.00%) Python
3 3 (15.00%) Scala
4 1 (5.00%) BrightScript
4 1 (5.00%) C++
4 1 (5.00%) Java 8
4 1 (5.00%) JavaScript
Qualifications
1 3 (15.00%) SC Cleared
1 3 (15.00%) Security Cleared
2 1 (5.00%) Degree
Quality Assurance & Compliance
1 1 (5.00%) QA
System Software
1 7 (35.00%) Docker
Systems Management
1 4 (20.00%) Ansible
1 4 (20.00%) Terraform
2 3 (15.00%) Grafana
2 3 (15.00%) Kibana
2 3 (15.00%) Prometheus
3 1 (5.00%) Kubernetes
Vendors
1 3 (15.00%) VMware
2 2 (10.00%) Microsoft
3 1 (5.00%) Roku