Period
to 19 October 2018

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 19 October 2018 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
19 Oct 2018
Same period 2017 Same period 2016
Rank 11 3 21
Rank change year-on-year -8 +18 +10
Contract jobs citing TDD 37 39 15
As % of all contract IT jobs advertised in Hounslow 9.27% 15.60% 5.05%
As % of the Processes & Methodologies category 10.48% 17.57% 5.68%
Number of daily rates quoted 27 36 14
Hounslow median daily rate £525 £518 £425
Median daily rate % change year-on-year +1.45% +21.76% +21.43%
10th Percentile £440 £393 £346
90th Percentile £625 £575 £548
West London median daily rate £525 £503 £475
% change year-on-year +4.48% +5.79% +6.74%
Number of hourly rates quoted 0 0 1
Hounslow median hourly rate - - £55.00
West London median hourly rate - - £55.00

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 353 222 264
As % of all contract IT jobs advertised in Hounslow 88.47% 88.80% 88.89%
Number of daily rates quoted 226 131 164
Hounslow median daily rate £488 £450 £443
Median daily rate % change year-on-year +8.33% +1.69% +6.95%
10th Percentile £236 £255 £241
90th Percentile £625 £575 £562
West London median daily rate £463 £450 £414
% change year-on-year +2.78% +8.76% +3.44%
Number of hourly rates quoted 16 4 12
Hounslow median hourly rate £20.80 £12.74 £22.75
Median hourly rate % change year-on-year +63.30% -44.01% +26.39%
10th Percentile £12.50 £12.00 £10.99
90th Percentile £79.63 £135.36 £54.63
West London median hourly rate £37.50 £23.50 £21.25
% change year-on-year +59.57% +10.59% +11.84%

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
Contractor Daily Rate Histogram in Hounslow

The daily rate distribution of IT jobs citing TDD in Hounslow over the 6 months to 19 October 2018.

Contractor daily rate histogram 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 19 October 2018. 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
Isleworth -1 14 £509 -1.69% 6
Chiswick - 10 £525 -
Feltham +4 4 £450 -9.77%
Osterley -1 2 £500 +21.80%
Brentford - 2 £700 -
TDD
West London

For the 6 months to 19 October 2018, 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 33 (89.19%) Agile Software Development
2 24 (64.86%) BDD
3 20 (54.05%) Continuous Integration
4 17 (45.95%) Java
5 16 (43.24%) Pair Programming
6 15 (40.54%) Jenkins
7 14 (37.84%) Continuous Improvement
7 14 (37.84%) Software Engineering
7 14 (37.84%) Git (software)
8 12 (32.43%) Acceptance Criteria
9 11 (29.73%) JavaScript
10 10 (27.03%) Scrum
10 10 (27.03%) Spring
10 10 (27.03%) React
11 9 (24.32%) Node.js
11 9 (24.32%) QA
11 9 (24.32%) Video on Demand
12 8 (21.62%) Test Automation
12 8 (21.62%) Web Services
12 8 (21.62%) REST
12 8 (21.62%) Microservices
13 7 (18.92%) Analytical Skills
13 7 (18.92%) Mentoring
13 7 (18.92%) CircleCI
13 7 (18.92%) Unix
13 7 (18.92%) Linux
13 7 (18.92%) Python
13 7 (18.92%) Video\Live Streaming
13 7 (18.92%) CSS
13 7 (18.92%) RESTful

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 3 (8.11%) Apache
1 3 (8.11%) Apache Spark
2 2 (5.41%) CMS
2 2 (5.41%) Confluence
3 1 (2.70%) Apache Solr
3 1 (2.70%) Elasticsearch
3 1 (2.70%) SAS
Cloud Services
1 6 (16.22%) Amazon AWS
2 2 (5.41%) Akamai
2 2 (5.41%) Amazon CloudWatch
2 2 (5.41%) GitHub
3 1 (2.70%) Azure Active Directory
3 1 (2.70%) Microsoft Azure
Communications & Networking
1 3 (8.11%) HTTP
2 2 (5.41%) TCP/IP
3 1 (2.70%) SSL
Database & Business Intelligence
1 6 (16.22%) Apache Cassandra
2 4 (10.81%) PostgreSQL
3 3 (8.11%) Big Data
3 3 (8.11%) MongoDB
3 3 (8.11%) SQL Server
4 2 (5.41%) Apache Hive
4 2 (5.41%) Hadoop
4 2 (5.41%) Hazelcast
4 2 (5.41%) Impala
5 1 (2.70%) Data Lake
5 1 (2.70%) Data Warehouse
5 1 (2.70%) Flink
5 1 (2.70%) HBase
5 1 (2.70%) MySQL
5 1 (2.70%) NoSQL
5 1 (2.70%) Relational Database
5 1 (2.70%) SQL Server 2016
Development Applications
1 15 (40.54%) Jenkins
2 14 (37.84%) Git (software)
3 7 (18.92%) CircleCI
4 6 (16.22%) JUnit
5 5 (13.51%) Mockito
6 4 (10.81%) Maven
6 4 (10.81%) Mocha
7 3 (8.11%) Cucumber
7 3 (8.11%) Gradle
7 3 (8.11%) JIRA
8 2 (5.41%) Appium
8 2 (5.41%) Gatling
8 2 (5.41%) Hudson
8 2 (5.41%) TeamCity
9 1 (2.70%) NUnit
9 1 (2.70%) ReSharper
9 1 (2.70%) Selenium
9 1 (2.70%) Subversion
9 1 (2.70%) Visual Studio
9 1 (2.70%) WebDriver
General
1 1 (2.70%) Games
1 1 (2.70%) Publishing
Job Titles
1 27 (72.97%) Developer
2 13 (35.14%) Java Developer
3 9 (24.32%) Agile Developer
4 8 (21.62%) Agile Java Developer
5 4 (10.81%) JavaScript Developer
5 4 (10.81%) React Developer
6 3 (8.11%) Scala Developer
6 3 (8.11%) Senior Developer
6 3 (8.11%) Senior Java Developer
6 3 (8.11%) Software Engineer
7 2 (5.41%) .NET Developer
7 2 (5.41%) AWS Engineer
7 2 (5.41%) Big Data Developer
7 2 (5.41%) Full Stack Developer
7 2 (5.41%) Java Engineer
7 2 (5.41%) JavaScript Engineer
8 1 (2.70%) ASP.NET MVC Developer
8 1 (2.70%) Data Engineer
8 1 (2.70%) Developer in Test
8 1 (2.70%) Messaging Developer
Libraries, Frameworks & Software Standards
1 10 (27.03%) React
1 10 (27.03%) Spring
2 9 (24.32%) Node.js
3 8 (21.62%) REST
3 8 (21.62%) Web Services
4 7 (18.92%) CSS
4 7 (18.92%) RESTful
5 6 (16.22%) Spring Boot
6 5 (13.51%) AngularJS
7 4 (10.81%) Jest
7 4 (10.81%) Kafka
8 3 (8.11%) CSS3
8 3 (8.11%) HTML
8 3 (8.11%) HTML5
8 3 (8.11%) Play Framework
8 3 (8.11%) spray
9 2 (5.41%) .NET
9 2 (5.41%) Guice
9 2 (5.41%) Hibernate
9 2 (5.41%) JMS
Miscellaneous
1 9 (24.32%) Video on Demand
2 7 (18.92%) Analytical Skills
2 7 (18.92%) Video\Live Streaming
3 5 (13.51%) Over-the-Top Content
3 5 (13.51%) User Experience
4 2 (5.41%) Apple TV
4 2 (5.41%) Linux Command Line
5 1 (2.70%) Cyber Defence
5 1 (2.70%) Greenfield Project
5 1 (2.70%) iPad
5 1 (2.70%) iPhone
5 1 (2.70%) Mobile App
5 1 (2.70%) PlayStation
5 1 (2.70%) STB
5 1 (2.70%) Xbox
Operating Systems
1 7 (18.92%) Linux
1 7 (18.92%) Unix
2 2 (5.41%) Android
3 1 (2.70%) Apple iOS
3 1 (2.70%) Tizen
3 1 (2.70%) Windows
Processes & Methodologies
1 33 (89.19%) Agile Software Development
2 24 (64.86%) BDD
3 20 (54.05%) Continuous Integration
4 16 (43.24%) Pair Programming
5 14 (37.84%) Continuous Improvement
5 14 (37.84%) Software Engineering
6 12 (32.43%) Acceptance Criteria
7 10 (27.03%) Scrum
8 8 (21.62%) Microservices
8 8 (21.62%) Test Automation
9 7 (18.92%) Mentoring
9 7 (18.92%) Open Source
10 6 (16.22%) OO
10 6 (16.22%) Software Delivery
11 5 (13.51%) DevOps
11 5 (13.51%) High Availability
11 5 (13.51%) Kanban
11 5 (13.51%) User Stories
12 4 (10.81%) Capacity Planning
12 4 (10.81%) OOP
Programming Languages
1 17 (45.95%) Java
2 11 (29.73%) JavaScript
3 7 (18.92%) Python
4 6 (16.22%) SQL
5 5 (13.51%) Bash Shell
5 5 (13.51%) Java 8
5 5 (13.51%) Scala
6 2 (5.41%) C#
6 2 (5.41%) C++
6 2 (5.41%) Perl
6 2 (5.41%) Ruby
7 1 (2.70%) Apple Swift
7 1 (2.70%) ES6
7 1 (2.70%) Kotlin
7 1 (2.70%) R
Qualifications
1 4 (10.81%) Degree
2 1 (2.70%) ISEB
2 1 (2.70%) ISEB Practitioner
2 1 (2.70%) ISTQB
2 1 (2.70%) ISTQB Advanced Certification
Quality Assurance & Compliance
1 9 (24.32%) QA
2 1 (2.70%) PMO
System Software
1 6 (16.22%) Docker
2 1 (2.70%) Active Directory
2 1 (2.70%) Apache Flume
Systems Management
1 5 (13.51%) Kubernetes
2 4 (10.81%) Ansible
2 4 (10.81%) Terraform
3 2 (5.41%) Grafana
3 2 (5.41%) Prometheus
3 2 (5.41%) Puppet
3 2 (5.41%) Rancher
4 1 (2.70%) Hadoop YARN
4 1 (2.70%) HP Quality Center
4 1 (2.70%) Single Sign-On
Vendors
1 2 (5.41%) Apple
1 2 (5.41%) Cloudera
2 1 (2.70%) HP
2 1 (2.70%) Informatica
2 1 (2.70%) Microsoft
2 1 (2.70%) Samsung
2 1 (2.70%) Sony
2 1 (2.70%) Tableau
2 1 (2.70%) Teradata