Period
to 19 September 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 19 September 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
19 Sep 2018
Same period 2017 Same period 2016
Rank 7 10 5
Rank change year-on-year +3 -5 +14
Contract jobs citing TDD 316 232 419
As % of all contract IT jobs advertised in Leeds 12.54% 10.68% 14.56%
As % of the Processes & Methodologies category 13.95% 12.03% 16.12%
Number of daily rates quoted 225 216 339
Leeds median daily rate £425 £425 £450
Median daily rate % change year-on-year - -5.56% +23.29%
10th Percentile £325 £356 £325
90th Percentile £538 £550 £539
West Yorkshire median daily rate £425 £425 £450
% change year-on-year - -5.56% +23.29%
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 2,266 1,928 2,600
As % of all contract IT jobs advertised in Leeds 89.96% 88.73% 90.34%
Number of daily rates quoted 1,583 1,342 1,805
Leeds median daily rate £425 £400 £400
Median daily rate % change year-on-year +6.25% - +8.11%
10th Percentile £313 £275 £300
90th Percentile £563 £545 £562
West Yorkshire median daily rate £415 £400 £400
% change year-on-year +3.75% - +10.34%
Number of hourly rates quoted 43 22 33
Leeds median hourly rate £17.00 £16.00 £13.00
Median hourly rate % change year-on-year +6.25% +23.08% -4.38%
10th Percentile £11.44 £11.75 £10.20
90th Percentile £32.45 £38.46 £28.60
West Yorkshire median hourly rate £17.00 £14.20 £13.50
% change year-on-year +19.72% +5.19% -0.70%

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 19 September 2018.

Contractor daily rate histogram for TDD in Leeds

For the 6 months to 19 September 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.

1 261 (82.59%) Agile Software Development
2 161 (50.95%) Java
3 131 (41.46%) JavaScript
3 131 (41.46%) Microservices
4 103 (32.59%) BDD
5 99 (31.33%) Continuous Integration
6 91 (28.80%) SQL
7 89 (28.16%) Git (software)
8 86 (27.22%) Software Engineering
9 78 (24.68%) Scrum
10 77 (24.37%) Spring
10 77 (24.37%) Test Automation
11 71 (22.47%) Jenkins
12 69 (21.84%) .NET
13 68 (21.52%) C#
14 67 (21.20%) NoSQL
15 66 (20.89%) Spring Boot
16 59 (18.67%) Docker
17 58 (18.35%) MVC
18 57 (18.04%) Amazon AWS
19 53 (16.77%) Pair Programming
20 50 (15.82%) Hibernate
21 49 (15.51%) REST
22 48 (15.19%) MySQL
23 47 (14.87%) ASP.NET
23 47 (14.87%) ASP.NET MVC
24 46 (14.56%) RESTful
24 46 (14.56%) Java 8
25 45 (14.24%) Node.js
25 45 (14.24%) Linux

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 31 (9.81%) Confluence
2 30 (9.49%) Apache
3 17 (5.38%) nginx
4 16 (5.06%) Elasticsearch
5 15 (4.75%) Apache Spark
6 13 (4.11%) CMS
7 12 (3.80%) Sitecore CMS
7 12 (3.80%) Tomcat
8 8 (2.53%) Adobe Experience Manager
9 7 (2.22%) IIS
9 7 (2.22%) Jetty
9 7 (2.22%) Mongrel
9 7 (2.22%) WebSphere
10 3 (0.95%) WordPress
Cloud Services
1 57 (18.04%) Amazon AWS
2 22 (6.96%) Amazon EC2
3 20 (6.33%) Microsoft Azure
4 18 (5.70%) Slack
5 8 (2.53%) npm
6 7 (2.22%) GitHub
6 7 (2.22%) Google App Engine
6 7 (2.22%) Google Cloud Platform
7 5 (1.58%) Serverless
8 3 (0.95%) Trello
9 2 (0.63%) Amazon CloudWatch
9 2 (0.63%) Amazon SQS
9 2 (0.63%) AWS Lambda
9 2 (0.63%) BrowserStack
Communications & Networking
1 9 (2.85%) HTTP
2 7 (2.22%) DHCP
2 7 (2.22%) DNS
2 7 (2.22%) FTP
2 7 (2.22%) IPsec
2 7 (2.22%) SSL
2 7 (2.22%) TCP/IP
3 5 (1.58%) Firewall
4 2 (0.63%) FIX Connectivity
4 2 (0.63%) SMS
Database & Business Intelligence
1 67 (21.20%) NoSQL
2 48 (15.19%) MySQL
3 43 (13.61%) SQL Server
4 36 (11.39%) MongoDB
5 31 (9.81%) PostgreSQL
6 28 (8.86%) Big Data
7 18 (5.70%) Apache Cassandra
7 18 (5.70%) Hadoop
8 15 (4.75%) CouchDB
9 13 (4.11%) Amazon RDS
9 13 (4.11%) Riak
10 12 (3.80%) SQL Server 2012
11 10 (3.16%) Apache Hive
11 10 (3.16%) GIS
11 10 (3.16%) Redis
12 7 (2.22%) Relational Database
13 6 (1.90%) SQL Server 2008
14 5 (1.58%) Couchbase
15 4 (1.27%) Data Warehouse
15 4 (1.27%) HBase
Development Applications
1 89 (28.16%) Git (software)
2 71 (22.47%) Jenkins
3 44 (13.92%) JIRA
4 31 (9.81%) Maven
5 26 (8.23%) Selenium
6 23 (7.28%) Cucumber
7 22 (6.96%) Octopus Deploy
8 17 (5.38%) webpack
9 16 (5.06%) JUnit
9 16 (5.06%) Subversion
10 14 (4.43%) Mercurial
10 14 (4.43%) PHPUnit
11 13 (4.11%) SonarQube
12 11 (3.48%) Mockito
12 11 (3.48%) Team Foundation Server
12 11 (3.48%) Vagrant
13 10 (3.16%) gulp
13 10 (3.16%) WebDriver
14 7 (2.22%) Sonatype Nexus
14 7 (2.22%) Travis CI
General
1 13 (4.11%) Finance
2 10 (3.16%) Retail
3 2 (0.63%) Advertising
3 2 (0.63%) Telecoms
4 1 (0.32%) Banking
4 1 (0.32%) Games
4 1 (0.32%) Manufacturing
4 1 (0.32%) Marketing
Job Titles
1 247 (78.16%) Developer
2 99 (31.33%) Java Developer
3 37 (11.71%) .NET Developer
4 35 (11.08%) C# Developer
5 29 (9.18%) C# .NET Developer
6 28 (8.86%) Python Developer
7 27 (8.54%) JavaScript Developer
8 26 (8.23%) Software Engineer
9 22 (6.96%) PHP Developer
9 22 (6.96%) Senior Developer
10 13 (4.11%) ASP.NET Developer
10 13 (4.11%) ASP.NET MVC Developer
10 13 (4.11%) C# ASP.NET Developer
11 12 (3.80%) Java Engineer
11 12 (3.80%) React Developer
11 12 (3.80%) Senior .NET Developer
12 11 (3.48%) Agile Developer
12 11 (3.48%) AWS Developer
12 11 (3.48%) Senior C# .NET Developer
12 11 (3.48%) Senior C# Developer
Libraries, Frameworks & Software Standards
1 77 (24.37%) Spring
2 69 (21.84%) .NET
3 66 (20.89%) Spring Boot
4 50 (15.82%) Hibernate
5 49 (15.51%) REST
6 47 (14.87%) ASP.NET
6 47 (14.87%) ASP.NET MVC
7 46 (14.56%) RESTful
8 45 (14.24%) Node.js
9 41 (12.97%) AngularJS
10 40 (12.66%) ASP.NET Web API
10 40 (12.66%) HTML
11 38 (12.03%) CSS
12 34 (10.76%) React
13 33 (10.44%) Vue.js
14 30 (9.49%) Web Services
15 29 (9.18%) Kafka
16 24 (7.59%) RabbitMQ
17 20 (6.33%) CSS3
17 20 (6.33%) jQuery
Miscellaneous
1 17 (5.38%) Enterprise Software
2 10 (3.16%) Greenfield Project
3 9 (2.85%) User Experience
4 7 (2.22%) NHS
5 2 (0.63%) Computer Science
5 2 (0.63%) Data Centre
5 2 (0.63%) Digital Media
5 2 (0.63%) Equities
5 2 (0.63%) Foreign Exchange (FX)
5 2 (0.63%) N-Tier
6 1 (0.32%) Algorithms
6 1 (0.32%) Analytical Skills
6 1 (0.32%) Data Structures
6 1 (0.32%) Fintech
6 1 (0.32%) Management Information System
6 1 (0.32%) Mobile App
6 1 (0.32%) Self-Motivation
Operating Systems
1 45 (14.24%) Linux
2 16 (5.06%) Red Hat Enterprise Linux
3 11 (3.48%) VMS
4 4 (1.27%) Android
4 4 (1.27%) Apple iOS
4 4 (1.27%) Unix
5 3 (0.95%) Windows
6 2 (0.63%) Kali Linux
6 2 (0.63%) Mac OS X
Processes & Methodologies
1 261 (82.59%) Agile Software Development
2 131 (41.46%) Microservices
3 103 (32.59%) BDD
4 99 (31.33%) Continuous Integration
5 86 (27.22%) Software Engineering
6 78 (24.68%) Scrum
7 77 (24.37%) Test Automation
8 58 (18.35%) MVC
9 53 (16.77%) Pair Programming
10 36 (11.39%) Mentoring
11 35 (11.08%) Kanban
12 33 (10.44%) OO
12 33 (10.44%) Unit Testing
13 31 (9.81%) DevOps
14 30 (9.49%) SOA
15 28 (8.86%) Open Source
16 22 (6.96%) Coaching
17 20 (6.33%) SDLC
18 19 (6.01%) Deployment Automation
19 18 (5.70%) CQRS
Programming Languages
1 161 (50.95%) Java
2 131 (41.46%) JavaScript
3 91 (28.80%) SQL
4 68 (21.52%) C#
5 46 (14.56%) Java 8
6 42 (13.29%) Python
7 32 (10.13%) PHP
8 18 (5.70%) Scala
9 17 (5.38%) PHP 7
9 17 (5.38%) T-SQL
10 8 (2.53%) Kotlin
10 8 (2.53%) PowerShell
11 6 (1.90%) Groovy
11 6 (1.90%) TypeScript
12 4 (1.27%) Go
13 3 (0.95%) ES7
14 2 (0.63%) C
14 2 (0.63%) C++
14 2 (0.63%) ES6
15 1 (0.32%) VB.NET
Qualifications
1 19 (6.01%) SC Cleared
1 19 (6.01%) Security Cleared
2 15 (4.75%) BPSS Clearance
3 4 (1.27%) Degree
4 3 (0.95%) BC Cleared
5 1 (0.32%) Computer Science Degree
5 1 (0.32%) ISEB
5 1 (0.32%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 9 (2.85%) QA
2 4 (1.27%) PMO
3 3 (0.95%) Disclosure Scotland
System Software
1 59 (18.67%) Docker
2 9 (2.85%) VMware Infrastructure
3 7 (2.22%) Xen
4 3 (0.95%) Apache Flume
5 2 (0.63%) Virtual Machines
5 2 (0.63%) vSphere
Systems Management
1 21 (6.65%) Puppet
2 16 (5.06%) Ansible
3 7 (2.22%) Grafana
3 7 (2.22%) Graylog
3 7 (2.22%) Terraform
4 2 (0.63%) Kibana
4 2 (0.63%) Oozie
4 2 (0.63%) Opscode Chef
4 2 (0.63%) Prometheus
Vendors
1 26 (8.23%) Microsoft
2 17 (5.38%) Zend
3 16 (5.06%) Sitecore
4 10 (3.16%) Splunk
5 9 (2.85%) VMware
6 8 (2.53%) Adobe
6 8 (2.53%) Coverity
6 8 (2.53%) Red Hat
7 7 (2.22%) Google
8 4 (1.27%) Oracle
9 3 (0.95%) Cloudera
9 3 (0.95%) Hortonworks
10 1 (0.32%) Perforce
10 1 (0.32%) Xamarin