Period
to 20 March 2019

The following table provides summary statistics for contract job vacancies advertised in Yorkshire 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 20 March 2019 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)
England > Yorkshire
6 months to
20 Mar 2019
Same period 2018 Same period 2017
Rank 28 14 23
Rank change year-on-year -14 +9 -1
Contract jobs citing TDD 304 422 292
As % of all contract IT jobs advertised in Yorkshire 6.48% 8.95% 6.51%
As % of the Processes & Methodologies category 7.50% 10.45% 7.72%
Number of daily rates quoted 225 323 213
Yorkshire median daily rate £475 £425 £420
Median daily rate % change year-on-year +11.76% +1.19% -
10th Percentile £355 £325 £315
90th Percentile £560 £535 £538
England median daily rate £525 £500 £463
% change year-on-year +5.00% +8.11% +2.78%
Number of hourly rates quoted 1 0 0
Yorkshire median hourly rate £35.00 - -
England median hourly rate £41.50 £45.00 £43.50
% change year-on-year -7.78% +3.45% +8.75%

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 Yorkshire with a requirement for process or methodology skills.

All Process and Methodology Skills
Yorkshire
Contract vacancies with a requirement for process or methodology skills 4,055 4,038 3,782
As % of all contract IT jobs advertised in Yorkshire 86.48% 85.61% 84.33%
Number of daily rates quoted 2,766 2,651 2,437
Yorkshire median daily rate £425 £400 £400
Median daily rate % change year-on-year +6.25% - -
10th Percentile £275 £263 £263
90th Percentile £575 £541 £553
England median daily rate £475 £463 £438
% change year-on-year +2.70% +5.71% +2.94%
Number of hourly rates quoted 104 127 104
Yorkshire median hourly rate £17.38 £20.61 £14.60
Median hourly rate % change year-on-year -15.70% +41.21% -2.70%
10th Percentile £10.82 £10.65 £9.88
90th Percentile £42.70 £44.25 £32.20
England median hourly rate £23.63 £25.00 £25.00
% change year-on-year -5.50% - +11.11%

TDD
Job Vacancy Trend in Yorkshire

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

Job vacancy trend for TDD in Yorkshire

TDD
Contractor Daily Rate Trend in Yorkshire

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

Contractor daily rate trend for TDD in Yorkshire

TDD
Contractor Daily Rate Histogram in Yorkshire

The daily rate distribution of IT jobs citing TDD in Yorkshire over the 6 months to 20 March 2019.

Contractor daily rate histogram for TDD in Yorkshire

TDD
Contractor Hourly Rate Trend in Yorkshire

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Yorkshire.

Contractor hourly rate trend for TDD in Yorkshire

TDD
Contract Job Locations in Yorkshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Yorkshire region over the 6 months to 20 March 2019. 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
West Yorkshire -14 203 £475 +11.76% 70
South Yorkshire -8 85 £500 +17.65% 17
North Yorkshire -3 8 £413 +3.13% 12
East Yorkshire - 3 £343 - 2
TDD
England

For the 6 months to 20 March 2019, 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 Yorkshire region with a requirement for TDD.

1 242 (79.61%) Agile Software Development
2 149 (49.01%) Git (software)
3 141 (46.38%) Java
4 112 (36.84%) JavaScript
5 99 (32.57%) Continuous Integration
6 96 (31.58%) HTML
7 94 (30.92%) SQL
7 94 (30.92%) Microservices
8 91 (29.93%) BDD
9 86 (28.29%) Test Automation
9 86 (28.29%) CSS
10 82 (26.97%) Node.js
11 76 (25.00%) Jenkins
12 75 (24.67%) Software Engineering
13 69 (22.70%) Linux
13 69 (22.70%) .NET
14 68 (22.37%) Unix
15 67 (22.04%) NoSQL
16 64 (21.05%) Pair Programming
17 63 (20.72%) DevOps
18 61 (20.07%) C#
18 61 (20.07%) RESTful
18 61 (20.07%) Amazon AWS
19 58 (19.08%) Web Development
19 58 (19.08%) Python
20 56 (18.42%) Java 8
21 55 (18.09%) Subversion
22 54 (17.76%) Spring
22 54 (17.76%) MongoDB
23 52 (17.11%) Scrum

TDD
Co-occurring IT Skills in Yorkshire 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 40 (13.16%) Elasticsearch
2 38 (12.50%) nginx
3 36 (11.84%) Apache Spark
4 31 (10.20%) Confluence
5 21 (6.91%) Apache
6 10 (3.29%) CMS
7 6 (1.97%) SharePoint
7 6 (1.97%) Sitecore CMS
8 2 (0.66%) JBoss
8 2 (0.66%) Tomcat
8 2 (0.66%) WebSphere
8 2 (0.66%) WebSphere Application Server
9 1 (0.33%) WordPress
Applications
1 1 (0.33%) Microsoft Project
Cloud Services
1 61 (20.07%) Amazon AWS
2 39 (12.83%) Microsoft Azure
3 25 (8.22%) GitHub
4 15 (4.93%) PaaS
5 10 (3.29%) Slack
6 8 (2.63%) AWS Lambda
7 7 (2.30%) Amazon EC2
7 7 (2.30%) Serverless
8 4 (1.32%) Google Cloud Platform
9 3 (0.99%) AWS CloudFormation
9 3 (0.99%) Heroku
9 3 (0.99%) IaaS
9 3 (0.99%) SaaS
10 2 (0.66%) Amazon S3
10 2 (0.66%) Cloud Computing
11 1 (0.33%) Google App Engine
Communications & Networking
1 15 (4.93%) HTTP
2 2 (0.66%) DLNA
2 2 (0.66%) Firewall
2 2 (0.66%) Internet
2 2 (0.66%) Kerberos
2 2 (0.66%) TCP/IP
2 2 (0.66%) UPnP
2 2 (0.66%) VPN
2 2 (0.66%) Wi-Fi
Database & Business Intelligence
1 67 (22.04%) NoSQL
2 54 (17.76%) MongoDB
3 44 (14.47%) PostgreSQL
4 40 (13.16%) Hadoop
5 38 (12.50%) Redis
5 38 (12.50%) SQL Server
6 31 (10.20%) GIS
6 31 (10.20%) Riak
7 29 (9.54%) MySQL
8 26 (8.55%) Big Data
9 24 (7.89%) Apache Cassandra
10 23 (7.57%) CouchDB
11 22 (7.24%) Relational Database
12 17 (5.59%) Apache Hive
12 17 (5.59%) Neo4j
13 9 (2.96%) HBase
14 6 (1.97%) Amazon RDS
14 6 (1.97%) Data Warehouse
15 3 (0.99%) RDBMS
15 3 (0.99%) SQL Server 2008
Development Applications
1 149 (49.01%) Git (software)
2 76 (25.00%) Jenkins
3 55 (18.09%) Subversion
4 38 (12.50%) Mercurial
5 35 (11.51%) JIRA
6 33 (10.86%) Cucumber
7 30 (9.87%) JUnit
8 24 (7.89%) Spock
9 20 (6.58%) Mockito
10 19 (6.25%) Maven
11 14 (4.61%) Selenium
12 11 (3.62%) gulp
13 9 (2.96%) webpack
14 8 (2.63%) Bitbucket
14 8 (2.63%) Vagrant
15 7 (2.30%) PHPUnit
15 7 (2.30%) Visual Studio
16 5 (1.64%) Atlassian Bamboo
16 5 (1.64%) JMeter
16 5 (1.64%) Mocha
General
1 18 (5.92%) Finance
2 5 (1.64%) Retail
3 3 (0.99%) Banking
4 2 (0.66%) Electronics
5 1 (0.33%) Law
5 1 (0.33%) Legal
5 1 (0.33%) Manufacturing
5 1 (0.33%) Telecoms
Job Titles
1 235 (77.30%) Developer
2 84 (27.63%) Java Developer
3 51 (16.78%) Senior Developer
4 36 (11.84%) .NET Developer
5 30 (9.87%) Python Developer
6 27 (8.88%) Full Stack Developer
7 25 (8.22%) Senior Java Developer
8 21 (6.91%) DevOps Engineer
9 20 (6.58%) Software Engineer
10 18 (5.92%) JavaScript Developer
11 15 (4.93%) AWS Developer
12 13 (4.28%) PHP Developer
13 10 (3.29%) Java Engineer
14 9 (2.96%) Agile Developer
14 9 (2.96%) C# Developer
15 8 (2.63%) ASP.NET Developer
15 8 (2.63%) Big Data Engineer
15 8 (2.63%) Front End Developer (Client-Side Developer)
15 8 (2.63%) React Developer
15 8 (2.63%) Software Developer
Libraries, Frameworks & Software Standards
1 96 (31.58%) HTML
2 86 (28.29%) CSS
3 82 (26.97%) Node.js
4 69 (22.70%) .NET
5 61 (20.07%) RESTful
6 54 (17.76%) Spring
7 51 (16.78%) AngularJS
7 51 (16.78%) React
8 50 (16.45%) Spring Boot
9 45 (14.80%) RabbitMQ
10 38 (12.50%) REST
11 34 (11.18%) Vue.js
12 33 (10.86%) ASP.NET
13 31 (10.20%) ASP.NET MVC
14 30 (9.87%) jQuery
15 24 (7.89%) HTML5
16 19 (6.25%) CSS3
17 16 (5.26%) JAX-RS
17 16 (5.26%) Kafka
18 15 (4.93%) ASP.NET Web API
Miscellaneous
1 22 (7.24%) User Experience
2 12 (3.95%) Enterprise Software
2 12 (3.95%) Greenfield Project
3 5 (1.64%) Analytical Skills
4 3 (0.99%) Public Cloud
5 2 (0.66%) Distributed Denial-of-Service
5 2 (0.66%) Fintech
5 2 (0.66%) Management Information System
5 2 (0.66%) Mobile App
5 2 (0.66%) MPEG
6 1 (0.33%) Algorithms
6 1 (0.33%) Client/Server
6 1 (0.33%) Data Structures
6 1 (0.33%) Linux Command Line
6 1 (0.33%) Self-Motivation
Operating Systems
1 69 (22.70%) Linux
2 68 (22.37%) Unix
3 30 (9.87%) Mac OS X
4 12 (3.95%) Red Hat Enterprise Linux
5 8 (2.63%) Android
6 6 (1.97%) VMS
7 3 (0.99%) CentOS
8 2 (0.66%) Embedded Linux
9 1 (0.33%) Windows
9 1 (0.33%) Windows 10
Processes & Methodologies
1 242 (79.61%) Agile Software Development
2 99 (32.57%) Continuous Integration
3 94 (30.92%) Microservices
4 91 (29.93%) BDD
5 86 (28.29%) Test Automation
6 75 (24.67%) Software Engineering
7 64 (21.05%) Pair Programming
8 63 (20.72%) DevOps
9 58 (19.08%) Web Development
10 52 (17.11%) Scrum
11 43 (14.14%) Continuous Deployment
11 43 (14.14%) MVC
12 41 (13.49%) Open Source
13 37 (12.17%) Continuous Delivery
14 36 (11.84%) Responsive Web Design
15 28 (9.21%) OO
16 25 (8.22%) SDLC
17 24 (7.89%) Unit Testing
18 23 (7.57%) Asynchronous Programming
18 23 (7.57%) Progressive Web App
Programming Languages
1 141 (46.38%) Java
2 112 (36.84%) JavaScript
3 94 (30.92%) SQL
4 61 (20.07%) C#
5 58 (19.08%) Python
6 56 (18.42%) Java 8
7 36 (11.84%) Bash Shell
8 27 (8.88%) ES6
9 26 (8.55%) PHP
10 18 (5.92%) Scala
11 11 (3.62%) Ruby
11 11 (3.62%) T-SQL
12 8 (2.63%) Groovy
13 6 (1.97%) PHP 7
13 6 (1.97%) Shell Script
14 5 (1.64%) C++
15 4 (1.32%) Clojure
16 3 (0.99%) C
17 2 (0.66%) Go
17 2 (0.66%) HiveQL
Qualifications
1 30 (9.87%) BPSS Clearance
2 23 (7.57%) Security Cleared
3 14 (4.61%) DBS Check
4 4 (1.32%) Degree
4 4 (1.32%) SC Cleared
5 3 (0.99%) Computer Science Degree
6 2 (0.66%) BC Cleared
6 2 (0.66%) CISM
6 2 (0.66%) CISSP
7 1 (0.33%) CTC Cleared
7 1 (0.33%) OCA
7 1 (0.33%) OCAJ
7 1 (0.33%) Oracle Certification
Quality Assurance & Compliance
1 11 (3.62%) Disclosure Scotland
2 7 (2.30%) QA
3 3 (0.99%) GDPR
System Software
1 33 (10.86%) Docker
2 2 (0.66%) Active Directory
3 1 (0.33%) Virtual Machines
Systems Management
1 47 (15.46%) Ansible
2 18 (5.92%) Puppet
3 9 (2.96%) Opscode Chef
4 6 (1.97%) Terraform
5 4 (1.32%) Kubernetes
5 4 (1.32%) Rancher
6 2 (0.66%) Consul
6 2 (0.66%) Grafana
6 2 (0.66%) Graphite
6 2 (0.66%) Oozie
6 2 (0.66%) Packer
7 1 (0.33%) HP ALM
Vendors
1 31 (10.20%) Microsoft
2 12 (3.95%) Oracle
3 6 (1.97%) Atlassian
3 6 (1.97%) Google
3 6 (1.97%) Sitecore
3 6 (1.97%) Zend
4 4 (1.32%) Pega
5 3 (0.99%) Hortonworks
5 3 (0.99%) MapR
5 3 (0.99%) Xamarin
6 2 (0.66%) Coverity
6 2 (0.66%) EnterpriseDB
6 2 (0.66%) IBM
6 2 (0.66%) ServiceNow
7 1 (0.33%) Cloudera
7 1 (0.33%) HP
7 1 (0.33%) Red Hat
7 1 (0.33%) Teradata