Period
to 21 November 2017

The following table provides summary statistics for contract job vacancies advertised in Leeds 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 November 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.

Test-Driven Development (TDD)
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 12 13 16
Rank change year-on-year +1 +3 +25
Contract jobs citing TDD 219 285 279
As % of all contract IT jobs advertised in Leeds 9.68% 10.97% 8.62%
As % of the Processes & Methodologies category 11.25% 12.49% 9.90%
Number of daily rates quoted 204 239 235
Leeds median daily rate £425 £450 £363
Median daily rate % change year-on-year -5.56% +24.14% -3.33%
10th Percentile £350 £313 £271
90th Percentile £546 £540 £475
West Yorkshire median daily rate £425 £425 £355
% change year-on-year - +19.63% -5.27%
Number of hourly rates quoted 0 0 0
Leeds median hourly rate - - -
West Yorkshire 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 Leeds with a requirement for process or methodology skills.

All Process and Methodology Skills
Leeds
Contract vacancies with a requirement for process or methodology skills 1947 2282 2818
As % of all contract IT jobs advertised in Leeds 86.04% 87.80% 87.08%
Number of daily rates quoted 1389 1542 1976
Leeds median daily rate £410 £400 £380
Median daily rate % change year-on-year +2.50% +5.26% +8.57%
10th Percentile £275 £283 £263
90th Percentile £550 £563 £550
West Yorkshire median daily rate £400 £400 £375
% change year-on-year - +6.67% +7.14%
Number of hourly rates quoted 27 36 66
Leeds median hourly rate £20.50 £13.50 £14.30
Median hourly rate % change year-on-year +51.85% -5.58% +5.91%
10th Percentile £13.35 £10.20 £8.94
90th Percentile £40.00 £31.50 £39.75
West Yorkshire median hourly rate £15.50 £14.50 £15.00
% change year-on-year +6.90% -3.33% +3.45%

TDD
Job Vacancy Trend in Leeds

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

Job vacancy trend for TDD in Leeds

TDD
Contractor Daily Rate Trend in Leeds

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

Contractor daily rate trend for TDD in Leeds

TDD
Contractor Daily Rate Histogram in Leeds

The daily rate distribution of IT jobs citing TDD in Leeds over the 6 months to 21 November 2017.

Contractor daily rate histogram for TDD in Leeds

For the 6 months to 21 November 2017, IT contractor jobs citing TDD 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 Leeds region with a requirement for TDD.

1 182 (83.11%) Agile Software Development
2 131 (59.82%) Java
3 117 (53.42%) BDD
4 106 (48.40%) JavaScript
5 80 (36.53%) Microservices
6 78 (35.62%) Node.js
7 76 (34.70%) Scrum
8 71 (32.42%) Spring
9 67 (30.59%) Git (software)
10 66 (30.14%) Software Engineering
11 65 (29.68%) SQL
11 65 (29.68%) NoSQL
12 60 (27.40%) MongoDB
13 57 (26.03%) Jenkins
14 55 (25.11%) MySQL
15 52 (23.74%) HTML
15 52 (23.74%) React
16 51 (23.29%) AngularJS
17 46 (21.00%) Hibernate
17 46 (21.00%) Test Automation
18 43 (19.63%) .NET
19 41 (18.72%) MVC
19 41 (18.72%) JIRA
20 39 (17.81%) Kanban
20 39 (17.81%) Open Source
21 38 (17.35%) CSS
22 37 (16.89%) Cucumber
23 35 (15.98%) Docker
24 33 (15.07%) Pair Programming
24 33 (15.07%) Oracle

TDD
Co-occurring IT Skills in Leeds 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 27 (12.33%) Confluence
2 15 (6.85%) Apache Solr
3 12 (5.48%) CMS
3 12 (5.48%) Elasticsearch
4 11 (5.02%) Sitecore CMS
5 8 (3.65%) Tomcat
6 7 (3.20%) WebLogic
7 6 (2.74%) Apache
7 6 (2.74%) Apache Spark
8 5 (2.28%) JBoss
8 5 (2.28%) Jetty
8 5 (2.28%) Tornado
9 1 (0.46%) Cloud Foundry
9 1 (0.46%) Drupal
Applications
1 2 (0.91%) Adobe After Effects
1 2 (0.91%) Adobe Illustrator
1 2 (0.91%) Photoshop
2 1 (0.46%) MS Visio
Cloud Services
1 19 (8.68%) Slack
2 4 (1.83%) Amazon AWS
3 3 (1.37%) Microsoft Azure
4 2 (0.91%) GitHub
4 2 (0.91%) IaaS
4 2 (0.91%) PaaS
5 1 (0.46%) CloudBees
5 1 (0.46%) OpenShift
Communications & Networking
1 5 (2.28%) AMQP
1 5 (2.28%) Kerberos
2 2 (0.91%) Firewall
3 1 (0.46%) Internet
Database & Business Intelligence
1 65 (29.68%) NoSQL
2 60 (27.40%) MongoDB
3 55 (25.11%) MySQL
4 31 (14.16%) PostgreSQL
4 31 (14.16%) SQL Server
5 28 (12.79%) Apache Cassandra
6 11 (5.02%) Hadoop
7 9 (4.11%) Big Data
7 9 (4.11%) SQL Server 2008
7 9 (4.11%) SQL Server 2012
8 8 (3.65%) Couchbase
9 6 (2.74%) HBase
9 6 (2.74%) Riak
10 5 (2.28%) Redis
11 3 (1.37%) CouchDB
12 2 (0.91%) Apache Hive
12 2 (0.91%) Oracle Database
13 1 (0.46%) Amazon DynamoDB
13 1 (0.46%) Impala
13 1 (0.46%) Sqoop
Development Applications
1 67 (30.59%) Git (software)
2 57 (26.03%) Jenkins
3 41 (18.72%) JIRA
4 37 (16.89%) Cucumber
5 29 (13.24%) JUnit
6 25 (11.42%) Jasmine
7 24 (10.96%) Maven
8 17 (7.76%) Selenium
9 9 (4.11%) Octopus Deploy
10 8 (3.65%) Karma Test Runner
10 8 (3.65%) WebDriver
11 7 (3.20%) Grunt
11 7 (3.20%) Mockito
12 6 (2.74%) AppVeyor
12 6 (2.74%) CircleCI
12 6 (2.74%) FitNesse
12 6 (2.74%) JBehave
12 6 (2.74%) Vagrant
13 5 (2.28%) gulp
13 5 (2.28%) Mocha
General
1 18 (8.22%) Finance
2 5 (2.28%) Electronics
2 5 (2.28%) Games
2 5 (2.28%) Manufacturing
2 5 (2.28%) Marketing
2 5 (2.28%) Telecoms
3 3 (1.37%) Banking
3 3 (1.37%) Retail Banking
Job Titles
1 179 (81.74%) Developer
2 78 (35.62%) Java Developer
3 37 (16.89%) JavaScript Developer
4 34 (15.53%) .NET Developer
5 24 (10.96%) Software Engineer
6 22 (10.05%) Agile Developer
7 20 (9.13%) C# .NET Developer
7 20 (9.13%) C# Developer
7 20 (9.13%) Senior Developer
8 17 (7.76%) Front End Developer (Client-Side Developer)
8 17 (7.76%) Java Engineer
8 17 (7.76%) Java Software Engineer
8 17 (7.76%) Node.js Developer
9 14 (6.39%) Agile Java Developer
10 12 (5.48%) Lead Developer
11 10 (4.57%) ASP.NET MVC Developer
12 9 (4.11%) ASP.NET Developer
12 9 (4.11%) Full Stack Developer
12 9 (4.11%) HTML CSS Developer
12 9 (4.11%) Scala Developer
Libraries, Frameworks & Software Standards
1 78 (35.62%) Node.js
2 71 (32.42%) Spring
3 52 (23.74%) HTML
3 52 (23.74%) React
4 51 (23.29%) AngularJS
5 46 (21.00%) Hibernate
6 43 (19.63%) .NET
7 38 (17.35%) CSS
8 33 (15.07%) REST
9 32 (14.61%) ASP.NET
9 32 (14.61%) ASP.NET MVC
10 29 (13.24%) Spring Boot
11 26 (11.87%) RESTful
12 24 (10.96%) ASP.NET Web API
13 21 (9.59%) HTML5
14 20 (9.13%) CSS3
15 16 (7.31%) .NET Framework
16 15 (6.85%) Ember.js
16 15 (6.85%) jQuery
16 15 (6.85%) Kafka
Miscellaneous
1 20 (9.13%) Analytical Skills
2 16 (7.31%) Greenfield Project
3 15 (6.85%) Enterprise Software
4 14 (6.39%) User Experience
5 12 (5.48%) Mobile App
6 8 (3.65%) Algorithms
7 4 (1.83%) Media Streaming
8 3 (1.37%) Data Structures
9 2 (0.91%) Computer Science
10 1 (0.46%) Chromecast
10 1 (0.46%) IPTV
10 1 (0.46%) Management Information System
10 1 (0.46%) RIA
10 1 (0.46%) Smartphone
Operating Systems
1 29 (13.24%) Linux
2 23 (10.50%) Red Hat Enterprise Linux
3 14 (6.39%) Android
4 9 (4.11%) Apple iOS
5 4 (1.83%) Unix
Processes & Methodologies
1 182 (83.11%) Agile Software Development
2 117 (53.42%) BDD
3 80 (36.53%) Microservices
4 76 (34.70%) Scrum
5 66 (30.14%) Software Engineering
6 46 (21.00%) Test Automation
7 41 (18.72%) MVC
8 39 (17.81%) Kanban
8 39 (17.81%) Open Source
9 33 (15.07%) Pair Programming
10 32 (14.61%) Front End Development
11 30 (13.70%) DevOps
12 29 (13.24%) SOA
13 21 (9.59%) Coaching
13 21 (9.59%) SDLC
13 21 (9.59%) SFIA
14 20 (9.13%) Continuous Integration
14 20 (9.13%) Integration Testing
15 19 (8.68%) OOP
16 17 (7.76%) Web Development
Programming Languages
1 131 (59.82%) Java
2 106 (48.40%) JavaScript
3 65 (29.68%) SQL
4 32 (14.61%) C#
5 19 (8.68%) Python
6 18 (8.22%) PHP
7 16 (7.31%) Scala
8 13 (5.94%) T-SQL
9 9 (4.11%) Ruby
10 5 (2.28%) Bash Shell
11 4 (1.83%) Kotlin
11 4 (1.83%) PHP 5
11 4 (1.83%) PHP 7
12 3 (1.37%) ES6
12 3 (1.37%) Groovy
12 3 (1.37%) Perl
13 2 (0.91%) Go
14 1 (0.46%) Apple Swift
14 1 (0.46%) Elixir
14 1 (0.46%) Shell Script
Qualifications
1 8 (3.65%) BPSS Clearance
2 4 (1.83%) Degree
3 1 (0.46%) Computer Science Degree
3 1 (0.46%) DV Cleared
3 1 (0.46%) SC Cleared
3 1 (0.46%) Security Cleared
Quality Assurance & Compliance
1 4 (1.83%) QA
2 2 (0.91%) WCAG
System Software
1 35 (15.98%) Docker
2 5 (2.28%) Apache ZooKeeper
2 5 (2.28%) HDFS
3 1 (0.46%) Apache Flume
Systems Management
1 14 (6.39%) Puppet
2 13 (5.94%) Ansible
3 10 (4.57%) Opscode Chef
4 6 (2.74%) Terraform
5 5 (2.28%) Kubernetes
6 1 (0.46%) Cobbler
6 1 (0.46%) Grafana
6 1 (0.46%) Graylog
Vendors
1 33 (15.07%) Oracle
2 16 (7.31%) Red Hat
3 11 (5.02%) Sitecore
4 8 (3.65%) Microsoft
5 7 (3.20%) Xamarin
6 5 (2.28%) SAP
7 2 (0.91%) Adobe
7 2 (0.91%) Telerik
8 1 (0.46%) Informatica
8 1 (0.46%) MuleSoft
8 1 (0.46%) Splunk
8 1 (0.46%) Talend