Period
to 9 December 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 9 December 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
9 Dec 2018
Same period 2017 Same period 2016
Rank 17 3 22
Rank change year-on-year -14 +19 +4
Contract jobs citing TDD 32 65 11
As % of all contract IT jobs advertised in Hounslow 7.69% 20.12% 3.90%
As % of the Processes & Methodologies category 8.36% 22.57% 4.44%
Number of daily rates quoted 24 62 10
Hounslow median daily rate £525 £525 £425
Median daily rate % change year-on-year - +23.53% +13.33%
10th Percentile £450 £393 £335
90th Percentile £605 £613 £483
West London median daily rate £525 £518 £475
% change year-on-year +1.45% +8.95% +5.56%
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 383 288 248
As % of all contract IT jobs advertised in Hounslow 92.07% 89.16% 87.94%
Number of daily rates quoted 232 184 147
Hounslow median daily rate £500 £500 £425
Median daily rate % change year-on-year - +17.65% +1.19%
10th Percentile £251 £305 £227
90th Percentile £622 £597 £561
West London median daily rate £450 £450 £425
% change year-on-year - +5.88% +6.12%
Number of hourly rates quoted 22 7 13
Hounslow median hourly rate £30.50 £26.00 £25.00
Median hourly rate % change year-on-year +17.31% +4.00% +25.00%
10th Percentile £11.30 £12.00 £8.60
90th Percentile £115.00 £105.88 £68.76
West London median hourly rate £42.50 £25.75 £21.50
% change year-on-year +65.05% +19.77% -2.27%

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 9 December 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 9 December 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
Chiswick +6 9 £525 -
Osterley +1 7 £500 +16.75%
Isleworth -4 6 £518 -1.43% 3
Feltham -2 3 £410 -12.53%
TDD
West London

For the 6 months to 9 December 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 26 (81.25%) Agile Software Development
2 18 (56.25%) Pair Programming
2 18 (56.25%) BDD
3 13 (40.63%) Continuous Integration
4 12 (37.50%) Java
4 12 (37.50%) Acceptance Criteria
5 11 (34.38%) JavaScript
5 11 (34.38%) Git (software)
6 10 (31.25%) QA
6 10 (31.25%) Software Engineering
6 10 (31.25%) Scrum
7 9 (28.13%) Continuous Improvement
7 9 (28.13%) Jenkins
8 8 (25.00%) React
8 8 (25.00%) Test Automation
8 8 (25.00%) REST
8 8 (25.00%) Video on Demand
9 7 (21.88%) Open Source
9 7 (21.88%) Node.js
9 7 (21.88%) Unit Testing
9 7 (21.88%) Degree
9 7 (21.88%) Video\Live Streaming
9 7 (21.88%) CSS
9 7 (21.88%) Unix
9 7 (21.88%) Linux
10 6 (18.75%) Web Services
10 6 (18.75%) Analytical Skills
10 6 (18.75%) Microservices
10 6 (18.75%) CircleCI
11 5 (15.63%) Java 8

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 (9.38%) Apache
1 3 (9.38%) Apache Spark
2 2 (6.25%) CMS
2 2 (6.25%) Confluence
3 1 (3.13%) Apache Solr
3 1 (3.13%) Elasticsearch
3 1 (3.13%) SAS
Cloud Services
1 4 (12.50%) Amazon AWS
2 2 (6.25%) Amazon CloudWatch
2 2 (6.25%) GitHub
3 1 (3.13%) Azure Active Directory
3 1 (3.13%) Microsoft Azure
Communications & Networking
1 3 (9.38%) HTTP
2 2 (6.25%) TCP/IP
3 1 (3.13%) SSL
Database & Business Intelligence
1 5 (15.63%) Apache Cassandra
2 3 (9.38%) SQL Server
3 2 (6.25%) Apache Hive
3 2 (6.25%) Big Data
3 2 (6.25%) Hadoop
3 2 (6.25%) Impala
3 2 (6.25%) PostgreSQL
4 1 (3.13%) Data Lake
4 1 (3.13%) Data Warehouse
4 1 (3.13%) Flink
4 1 (3.13%) HBase
4 1 (3.13%) MongoDB
4 1 (3.13%) MySQL
4 1 (3.13%) NoSQL
4 1 (3.13%) Relational Database
4 1 (3.13%) SQL Server 2016
Development Applications
1 11 (34.38%) Git (software)
2 9 (28.13%) Jenkins
3 6 (18.75%) CircleCI
4 5 (15.63%) Mocha
5 4 (12.50%) JUnit
6 3 (9.38%) Gradle
6 3 (9.38%) JIRA
6 3 (9.38%) Mockito
7 2 (6.25%) Appium
7 2 (6.25%) Jasmine
7 2 (6.25%) Maven
7 2 (6.25%) TeamCity
8 1 (3.13%) CocoaPods
8 1 (3.13%) Cucumber
8 1 (3.13%) fastlane
8 1 (3.13%) Hudson
8 1 (3.13%) Karma Test Runner
8 1 (3.13%) ReSharper
8 1 (3.13%) SoapUI
8 1 (3.13%) Travis CI
General
1 1 (3.13%) Games
1 1 (3.13%) Publishing
Job Titles
1 24 (75.00%) Developer
2 10 (31.25%) Java Developer
3 7 (21.88%) Senior Developer
4 4 (12.50%) JavaScript Developer
4 4 (12.50%) Senior Java Developer
5 3 (9.38%) Agile Developer
5 3 (9.38%) Agile Java Developer
5 3 (9.38%) JavaScript Engineer
5 3 (9.38%) Software Engineer
6 2 (6.25%) .NET Developer
6 2 (6.25%) Full Stack Developer
6 2 (6.25%) React Developer
6 2 (6.25%) Scala Developer
7 1 (3.13%) Analyst
7 1 (3.13%) Big Data Developer
7 1 (3.13%) Business Analyst
7 1 (3.13%) C# Developer
7 1 (3.13%) Lead Developer
7 1 (3.13%) SQL Developer
7 1 (3.13%) Test Manager
Libraries, Frameworks & Software Standards
1 8 (25.00%) React
1 8 (25.00%) REST
2 7 (21.88%) CSS
2 7 (21.88%) Node.js
3 6 (18.75%) Web Services
4 5 (15.63%) AngularJS
4 5 (15.63%) Jest
4 5 (15.63%) Spring
5 4 (12.50%) Kafka
5 4 (12.50%) RESTful
6 3 (9.38%) JMS
6 3 (9.38%) Qt
7 2 (6.25%) .NET
7 2 (6.25%) CSS3
7 2 (6.25%) Guice
7 2 (6.25%) HTML
7 2 (6.25%) HTML5
7 2 (6.25%) Play Framework
7 2 (6.25%) Spark Streaming
7 2 (6.25%) spray
Miscellaneous
1 8 (25.00%) Video on Demand
2 7 (21.88%) Video\Live Streaming
3 6 (18.75%) Analytical Skills
4 5 (15.63%) User Experience
5 4 (12.50%) Over-the-Top Content
6 2 (6.25%) Apple TV
6 2 (6.25%) Linux Command Line
7 1 (3.13%) Cyber Defence
7 1 (3.13%) Greenfield Project
7 1 (3.13%) iPad
7 1 (3.13%) iPhone
7 1 (3.13%) Mobile App
7 1 (3.13%) PlayStation
7 1 (3.13%) STB
7 1 (3.13%) Xbox
Operating Systems
1 7 (21.88%) Linux
1 7 (21.88%) Unix
2 3 (9.38%) Android
3 2 (6.25%) Android TV
4 1 (3.13%) Apple iOS
4 1 (3.13%) Tizen
4 1 (3.13%) tvOS
4 1 (3.13%) Windows
Processes & Methodologies
1 26 (81.25%) Agile Software Development
2 18 (56.25%) BDD
2 18 (56.25%) Pair Programming
3 13 (40.63%) Continuous Integration
4 12 (37.50%) Acceptance Criteria
5 10 (31.25%) Scrum
5 10 (31.25%) Software Engineering
6 9 (28.13%) Continuous Improvement
7 8 (25.00%) Test Automation
8 7 (21.88%) Open Source
8 7 (21.88%) Unit Testing
9 6 (18.75%) Microservices
10 4 (12.50%) MVC
10 4 (12.50%) OO
10 4 (12.50%) Root Cause Analysis
11 3 (9.38%) Kanban
11 3 (9.38%) OOD
11 3 (9.38%) Software Delivery
11 3 (9.38%) User Stories
12 2 (6.25%) SDLC
Programming Languages
1 12 (37.50%) Java
2 11 (34.38%) JavaScript
3 5 (15.63%) Java 8
3 5 (15.63%) SQL
4 4 (12.50%) Scala
5 3 (9.38%) Bash Shell
5 3 (9.38%) C++
5 3 (9.38%) Python
6 2 (6.25%) C#
7 1 (3.13%) Apple Swift
7 1 (3.13%) ES6
7 1 (3.13%) Kotlin
7 1 (3.13%) R
Qualifications
1 7 (21.88%) Degree
2 1 (3.13%) Computer Science Degree
2 1 (3.13%) ISEB
2 1 (3.13%) ISEB Practitioner
2 1 (3.13%) ISTQB
2 1 (3.13%) ISTQB Advanced Certification
Quality Assurance & Compliance
1 10 (31.25%) QA
2 1 (3.13%) PMO
System Software
1 5 (15.63%) Docker
2 1 (3.13%) Active Directory
2 1 (3.13%) Apache Flume
Systems Management
1 4 (12.50%) Kubernetes
2 2 (6.25%) Grafana
2 2 (6.25%) Prometheus
2 2 (6.25%) Rancher
2 2 (6.25%) Terraform
3 1 (3.13%) Hadoop YARN
3 1 (3.13%) HP Quality Center
3 1 (3.13%) Single Sign-On
Vendors
1 2 (6.25%) Apple
1 2 (6.25%) Cloudera
2 1 (3.13%) HP
2 1 (3.13%) Informatica
2 1 (3.13%) Microsoft
2 1 (3.13%) Samsung
2 1 (3.13%) Sony
2 1 (3.13%) Tableau
2 1 (3.13%) Teradata