Period
to 9 December 2018

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 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)
6 months to
9 Dec 2018
Same period 2017 Same period 2016
Rank 16 13 13
Rank change year-on-year -3 0 +4
Contract jobs citing TDD 211 204 266
As % of all contract IT jobs advertised in Leeds 8.97% 9.08% 10.23%
As % of the Processes & Methodologies category 10.14% 10.41% 11.46%
Number of daily rates quoted 158 192 213
Leeds median daily rate £450 £425 £450
Median daily rate % change year-on-year +5.88% -5.56% +20.00%
10th Percentile £350 £340 £313
90th Percentile £550 £575 £548
West Yorkshire median daily rate £444 £425 £425
% change year-on-year +4.41% - +13.33%
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 2,080 1,959 2,322
As % of all contract IT jobs advertised in Leeds 88.47% 87.22% 89.34%
Number of daily rates quoted 1,445 1,388 1,544
Leeds median daily rate £425 £413 £400
Median daily rate % change year-on-year +3.03% +3.13% +3.23%
10th Percentile £313 £265 £275
90th Percentile £575 £550 £550
West Yorkshire median daily rate £413 £401 £400
% change year-on-year +3.00% +0.13% +6.67%
Number of hourly rates quoted 50 33 40
Leeds median hourly rate £17.91 £25.00 £13.00
Median hourly rate % change year-on-year -28.37% +92.31% -13.33%
10th Percentile £11.24 £11.98 £10.20
90th Percentile £26.85 £40.00 £30.83
West Yorkshire median hourly rate £17.41 £16.00 £14.50
% change year-on-year +8.81% +10.34% -4.92%

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 9 December 2018.

Contractor daily rate histogram for TDD in Leeds

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 Leeds region with a requirement for TDD.

1 160 (75.83%) Agile Software Development
2 103 (48.82%) Java
3 93 (44.08%) JavaScript
4 87 (41.23%) SQL
5 80 (37.91%) BDD
5 80 (37.91%) Microservices
6 72 (34.12%) Software Engineering
7 69 (32.70%) Git (software)
8 67 (31.75%) NoSQL
9 59 (27.96%) Test Automation
10 58 (27.49%) Continuous Integration
11 54 (25.59%) MongoDB
12 50 (23.70%) Pair Programming
13 49 (23.22%) MySQL
14 48 (22.75%) JIRA
15 46 (21.80%) Python
16 45 (21.33%) .NET
16 45 (21.33%) Spring
17 44 (20.85%) C#
17 44 (20.85%) Node.js
18 43 (20.38%) Jenkins
19 42 (19.91%) PostgreSQL
20 41 (19.43%) Confluence
21 40 (18.96%) Scrum
22 38 (18.01%) Spring Boot
23 37 (17.54%) Amazon AWS
24 34 (16.11%) RabbitMQ
24 34 (16.11%) Linux
24 34 (16.11%) Java 8
25 33 (15.64%) Subversion

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 41 (19.43%) Confluence
2 30 (14.22%) Elasticsearch
3 27 (12.80%) nginx
4 20 (9.48%) Apache Spark
5 19 (9.00%) Apache
6 11 (5.21%) CMS
6 11 (5.21%) Sitecore CMS
7 4 (1.90%) WordPress
8 3 (1.42%) Tomcat
9 1 (0.47%) Adobe Experience Manager
Cloud Services
1 37 (17.54%) Amazon AWS
2 24 (11.37%) Slack
3 18 (8.53%) Amazon EC2
4 13 (6.16%) Microsoft Azure
5 6 (2.84%) Serverless
6 4 (1.90%) GitHub
7 3 (1.42%) AWS Lambda
8 2 (0.95%) Amazon CloudWatch
8 2 (0.95%) Amazon SQS
8 2 (0.95%) npm
Communications & Networking
1 6 (2.84%) HTTP
2 3 (1.42%) Firewall
3 1 (0.47%) DLNA
3 1 (0.47%) TCP/IP
3 1 (0.47%) UPnP
3 1 (0.47%) Wi-Fi
Database & Business Intelligence
1 67 (31.75%) NoSQL
2 54 (25.59%) MongoDB
3 49 (23.22%) MySQL
4 42 (19.91%) PostgreSQL
5 27 (12.80%) Apache Cassandra
5 27 (12.80%) Redis
5 27 (12.80%) SQL Server
6 26 (12.32%) CouchDB
7 23 (10.90%) GIS
7 23 (10.90%) Hadoop
8 22 (10.43%) Riak
9 16 (7.58%) Amazon RDS
10 10 (4.74%) Big Data
11 7 (3.32%) Relational Database
12 6 (2.84%) SQL Server 2012
13 5 (2.37%) Neo4j
14 4 (1.90%) Apache Hive
15 3 (1.42%) Couchbase
16 2 (0.95%) Data Warehouse
17 1 (0.47%) Data Lake
Development Applications
1 69 (32.70%) Git (software)
2 48 (22.75%) JIRA
3 43 (20.38%) Jenkins
4 33 (15.64%) Subversion
5 29 (13.74%) Cucumber
6 28 (13.27%) Mercurial
7 25 (11.85%) Selenium
8 16 (7.58%) Vagrant
9 15 (7.11%) PHPUnit
10 14 (6.64%) Maven
11 12 (5.69%) webpack
12 11 (5.21%) gulp
13 10 (4.74%) Octopus Deploy
14 7 (3.32%) JMeter
14 7 (3.32%) JUnit
14 7 (3.32%) Mockito
14 7 (3.32%) Team Foundation Server
15 6 (2.84%) TeamCity
16 5 (2.37%) IntelliJ
16 5 (2.37%) Mocha
General
1 8 (3.79%) Retail
2 6 (2.84%) Finance
3 1 (0.47%) Electronics
3 1 (0.47%) Games
3 1 (0.47%) Law
3 1 (0.47%) Legal
Job Titles
1 161 (76.30%) Developer
2 58 (27.49%) Java Developer
3 25 (11.85%) .NET Developer
4 23 (10.90%) Python Developer
5 22 (10.43%) Software Engineer
6 19 (9.00%) PHP Developer
7 18 (8.53%) C# .NET Developer
7 18 (8.53%) C# Developer
8 16 (7.58%) Senior Developer
9 12 (5.69%) ASP.NET Developer
9 12 (5.69%) C# ASP.NET Developer
10 11 (5.21%) ASP.NET MVC Developer
10 11 (5.21%) DevOps Engineer
10 11 (5.21%) JavaScript Developer
11 10 (4.74%) AWS Developer
12 9 (4.27%) Software Developer
13 8 (3.79%) Full Stack Developer
13 8 (3.79%) React Developer
14 7 (3.32%) Python Engineer
14 7 (3.32%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 45 (21.33%) .NET
1 45 (21.33%) Spring
2 44 (20.85%) Node.js
3 38 (18.01%) Spring Boot
4 34 (16.11%) RabbitMQ
5 31 (14.69%) React
5 31 (14.69%) REST
6 30 (14.22%) ASP.NET
7 29 (13.74%) ASP.NET MVC
7 29 (13.74%) Hibernate
8 27 (12.80%) HTML
9 25 (11.85%) AngularJS
10 23 (10.90%) jQuery
10 23 (10.90%) Vue.js
11 20 (9.48%) ASP.NET Web API
11 20 (9.48%) CSS
11 20 (9.48%) RESTful
12 17 (8.06%) Doctrine
13 15 (7.11%) CSS3
13 15 (7.11%) Dropwizard
Miscellaneous
1 13 (6.16%) Enterprise Software
2 11 (5.21%) Greenfield Project
2 11 (5.21%) User Experience
3 3 (1.42%) NHS
4 2 (0.95%) Algorithms
4 2 (0.95%) Data Structures
4 2 (0.95%) N-Tier
5 1 (0.47%) Analytical Skills
5 1 (0.47%) Data Centre
5 1 (0.47%) Fintech
5 1 (0.47%) Mobile App
5 1 (0.47%) MPEG
Operating Systems
1 34 (16.11%) Linux
2 20 (9.48%) Red Hat Enterprise Linux
3 14 (6.64%) VMS
4 5 (2.37%) Mac OS X
4 5 (2.37%) Unix
5 2 (0.95%) Android
6 1 (0.47%) Apple iOS
6 1 (0.47%) Embedded Linux
Processes & Methodologies
1 160 (75.83%) Agile Software Development
2 80 (37.91%) BDD
2 80 (37.91%) Microservices
3 72 (34.12%) Software Engineering
4 59 (27.96%) Test Automation
5 58 (27.49%) Continuous Integration
6 50 (23.70%) Pair Programming
7 40 (18.96%) Scrum
8 32 (15.17%) MVC
9 29 (13.74%) DevOps
10 26 (12.32%) SDLC
11 24 (11.37%) Unit Testing
12 22 (10.43%) Mentoring
12 22 (10.43%) OO
13 20 (9.48%) Coaching
14 17 (8.06%) Domain-Driven Design
14 17 (8.06%) Kanban
14 17 (8.06%) Non-Functional Testing
14 17 (8.06%) SOA
15 15 (7.11%) CQRS
Programming Languages
1 103 (48.82%) Java
2 93 (44.08%) JavaScript
3 87 (41.23%) SQL
4 46 (21.80%) Python
5 44 (20.85%) C#
6 34 (16.11%) Java 8
7 28 (13.27%) PHP
8 19 (9.00%) PHP 7
9 14 (6.64%) T-SQL
10 12 (5.69%) Scala
11 7 (3.32%) Groovy
12 4 (1.90%) Clojure
12 4 (1.90%) Go
12 4 (1.90%) Kotlin
12 4 (1.90%) PowerShell
13 3 (1.42%) C++
13 3 (1.42%) ES7
14 2 (0.95%) ES6
15 1 (0.47%) C
15 1 (0.47%) Ruby
Qualifications
1 18 (8.53%) BPSS Clearance
2 6 (2.84%) SC Cleared
2 6 (2.84%) Security Cleared
3 4 (1.90%) Degree
4 3 (1.42%) BC Cleared
5 2 (0.95%) Computer Science Degree
Quality Assurance & Compliance
1 6 (2.84%) QA
2 3 (1.42%) Disclosure Scotland
3 2 (0.95%) PMO
System Software
1 31 (14.69%) Docker
2 2 (0.95%) VMware Infrastructure
2 2 (0.95%) vSphere
Systems Management
1 27 (12.80%) Ansible
2 7 (3.32%) Puppet
3 6 (2.84%) Grafana
4 4 (1.90%) Graylog
4 4 (1.90%) Terraform
5 2 (0.95%) Graphite
5 2 (0.95%) Kibana
5 2 (0.95%) Opscode Chef
5 2 (0.95%) Prometheus
Vendors
1 17 (8.06%) Zend
2 13 (6.16%) Microsoft
3 11 (5.21%) Sitecore
4 3 (1.42%) Splunk
5 2 (0.95%) VMware
6 1 (0.47%) Adobe
6 1 (0.47%) Atlassian
6 1 (0.47%) Coverity
6 1 (0.47%) Google
6 1 (0.47%) Perforce
6 1 (0.47%) Red Hat
6 1 (0.47%) Xamarin