Period
to 23 October 2018

The following table provides summary statistics for contract job vacancies advertised in England 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 23 October 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)
UK > England
6 months to
23 Oct 2018
Same period 2017 Same period 2016
Rank 18 16 28
Rank change year-on-year -2 +12 +2
Contract jobs citing TDD 7,626 7,176 6,240
As % of all contract IT jobs advertised in England 8.07% 7.79% 6.39%
As % of the Processes & Methodologies category 9.35% 9.06% 7.48%
Number of daily rates quoted 5,955 5,603 5,013
England median daily rate £500 £488 £450
Median daily rate % change year-on-year +2.56% +8.33% +5.88%
10th Percentile £375 £350 £325
90th Percentile £648 £625 £606
UK median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 22 53 27
England median hourly rate £41.50 £45.00 £42.50
Median hourly rate % change year-on-year -7.78% +5.88% +6.25%
10th Percentile £21.08 £35.25 £31.15
90th Percentile £67.97 £63.75 £48.50
UK median hourly rate £41.50 £45.00 £42.50
% change year-on-year -7.78% +5.88% +9.68%

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 England with a requirement for process or methodology skills.

All Process and Methodology Skills
England
Contract vacancies with a requirement for process or methodology skills 81,550 79,195 83,380
As % of all contract IT jobs advertised in England 86.26% 85.93% 85.37%
Number of daily rates quoted 54,470 53,008 55,540
England median daily rate £473 £450 £425
Median daily rate % change year-on-year +5.00% +5.88% +3.03%
10th Percentile £300 £283 £263
90th Percentile £644 £631 £606
UK median daily rate £455 £450 £425
% change year-on-year +1.11% +5.88% +3.03%
Number of hourly rates quoted 2,180 1,862 2,214
England median hourly rate £21.00 £24.93 £22.50
Median hourly rate % change year-on-year -15.75% +10.78% +3.97%
10th Percentile £11.25 £11.25 £11.50
90th Percentile £50.00 £50.00 £48.00
UK median hourly rate £21.00 £24.98 £22.50
% change year-on-year -15.93% +11.02% +3.73%

TDD
Job Vacancy Trend in England

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

Job vacancy trend for TDD in England

TDD
Contractor Daily Rate Trend in England

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

Contractor daily rate trend for TDD in England

TDD
Contractor Daily Rate Histogram in England

The daily rate distribution of IT jobs citing TDD in England over the 6 months to 23 October 2018.

Contractor daily rate histogram for TDD in England

TDD
Contractor Hourly Rate Trend in England

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

Contractor hourly rate trend for TDD in England

TDD
Contractor Hourly Rate Histogram in England

The hourly rate distribution of IT jobs citing TDD in England over the 6 months to 23 October 2018.

Contractor hourly rate histogram for TDD in England

TDD
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the England region over the 6 months to 23 October 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
London -1 4,719 £525 +5.00% 1,040
South East 0 988 £475 +11.76% 299
North of England +4 858 £425 +1.19% 348
Midlands +1 444 £450 +12.50% 159
Yorkshire 0 389 £425 - 135
North West -2 372 £430 +7.50% 179
East of England -13 349 £525 +5.00% 115
West Midlands +1 308 £450 +12.50% 78
South West +21 263 £425 +6.25% 139
East Midlands +3 136 £410 +2.50% 81
North East 0 97 £395 +1.28% 34
TDD
UK

For the 6 months to 23 October 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 England region with a requirement for TDD.

1 5,665 (74.29%) Agile Software Development
2 3,388 (44.43%) Java
3 3,168 (41.54%) BDD
4 2,784 (36.51%) JavaScript
5 2,071 (27.16%) Scrum
6 1,985 (26.03%) Continuous Integration
7 1,930 (25.31%) Git (software)
8 1,917 (25.14%) Microservices
9 1,727 (22.65%) C#
10 1,689 (22.15%) .NET
11 1,629 (21.36%) HTML
12 1,571 (20.60%) Spring
12 1,571 (20.60%) Amazon AWS
13 1,550 (20.33%) AngularJS
14 1,533 (20.10%) CSS
15 1,521 (19.94%) Test Automation
16 1,465 (19.21%) Jenkins
17 1,379 (18.08%) REST
17 1,379 (18.08%) SQL
18 1,344 (17.62%) RESTful
19 1,315 (17.24%) Finance
20 1,284 (16.84%) Docker
21 1,262 (16.55%) DevOps
22 1,248 (16.37%) Microsoft Azure
23 1,244 (16.31%) React
24 1,209 (15.85%) Web Services
25 1,174 (15.39%) Java 8
26 1,165 (15.28%) Node.js
27 1,101 (14.44%) MVC
28 1,055 (13.83%) OO

TDD
Co-occurring IT Skills in England 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
1 457 (5.99%) Confluence
2 289 (3.79%) Elasticsearch
3 262 (3.44%) Tomcat
4 223 (2.92%) Apache Spark
5 217 (2.85%) Apache
6 205 (2.69%) WebSphere
7 183 (2.40%) WebLogic
8 161 (2.11%) CMS
9 157 (2.06%) OpenStack
10 122 (1.60%) JBoss
11 112 (1.47%) NServiceBus
12 107 (1.40%) Mule
13 99 (1.30%) Cloud Foundry
14 89 (1.17%) Oracle SOA Suite
15 70 (0.92%) Jetty
16 67 (0.88%) Oracle Service Bus
17 63 (0.83%) MQSeries
18 59 (0.77%) Apache Solr
19 54 (0.71%) Sitecore CMS
20 53 (0.69%) IIS
Applications
1 55 (0.72%) Photoshop
2 38 (0.50%) Microsoft Excel
3 20 (0.26%) Spreadsheet
4 16 (0.21%) GIMP
5 13 (0.17%) Adobe Illustrator
6 10 (0.13%) Fireworks
6 10 (0.13%) InVision
7 6 (0.079%) Chatbot
8 4 (0.052%) Microsoft Project
9 3 (0.039%) MS Visio
10 2 (0.026%) Snapchat
10 2 (0.026%) S-PLUS
11 1 (0.013%) Doxygen
11 1 (0.013%) Final Cut Pro
11 1 (0.013%) InfoPath
11 1 (0.013%) Microsoft Office
11 1 (0.013%) Microsoft PowerPoint
Business Applications
1 40 (0.52%) Dynamics CRM
2 14 (0.18%) Payment Gateway
3 11 (0.14%) Magento
4 10 (0.13%) Distributed Ledger
5 9 (0.12%) Markit EDM
6 6 (0.079%) Oracle BPM
7 5 (0.066%) SAP Hybris
8 4 (0.052%) Oracle Financials
8 4 (0.052%) Oracle Retail
8 4 (0.052%) SDL Web 8
8 4 (0.052%) thinkFolio
9 3 (0.039%) Oracle CRM
9 3 (0.039%) PeopleSoft Financials
9 3 (0.039%) SAP Oil and Gas
9 3 (0.039%) Siebel CRM
10 2 (0.026%) Global One
10 2 (0.026%) ION MarketView
10 2 (0.026%) LatentZero
10 2 (0.026%) Summit
10 2 (0.026%) Unica
Cloud Services
1 1,571 (20.60%) Amazon AWS
2 1,248 (16.37%) Microsoft Azure
3 282 (3.70%) GitHub
4 226 (2.96%) Serverless
5 187 (2.45%) Google Cloud Platform
6 146 (1.91%) Amazon EC2
7 129 (1.69%) npm
8 103 (1.35%) PaaS
9 92 (1.21%) AWS Lambda
10 81 (1.06%) Cloud Computing
11 77 (1.01%) Heroku
12 74 (0.97%) OpenShift
13 73 (0.96%) SaaS
14 64 (0.84%) Amazon SQS
15 61 (0.80%) Slack
16 59 (0.77%) Amazon S3
17 42 (0.55%) Azure Functions
18 32 (0.42%) IaaS
19 31 (0.41%) Apigee
20 30 (0.39%) Amazon CloudWatch
Communications & Networking
1 242 (3.17%) HTTP
2 88 (1.15%) Internet
3 76 (1.00%) TCP/IP
4 55 (0.72%) SSL
5 40 (0.52%) AMQP
6 28 (0.37%) FTP
7 27 (0.35%) DNS
8 25 (0.33%) SMS
9 21 (0.28%) Firewall
10 19 (0.25%) Software-Defined Networking
11 18 (0.24%) Kerberos
12 16 (0.21%) HTTPS
13 12 (0.16%) Skype
14 10 (0.13%) Broadband
14 10 (0.13%) Network Security
14 10 (0.13%) Reverse Proxy
15 9 (0.12%) SSH
16 8 (0.10%) LAN
17 7 (0.092%) SMTP
18 6 (0.079%) MQTT
Database & Business Intelligence
1 879 (11.53%) SQL Server
2 868 (11.38%) NoSQL
3 607 (7.96%) PostgreSQL
4 580 (7.61%) MySQL
5 549 (7.20%) MongoDB
6 415 (5.44%) Relational Database
7 318 (4.17%) Big Data
8 287 (3.76%) Hadoop
9 284 (3.72%) Apache Cassandra
10 135 (1.77%) Redis
11 122 (1.60%) HBase
12 91 (1.19%) Azure SQL Database
13 90 (1.18%) Amazon DynamoDB
13 90 (1.18%) Apache Hive
14 83 (1.09%) Couchbase
15 72 (0.94%) RDBMS
16 66 (0.87%) SQL Server 2012
17 64 (0.84%) SQL Server Integration Services
18 63 (0.83%) Data Warehouse
19 52 (0.68%) Cosmos DB
Development Applications
1 1,930 (25.31%) Git (software)
2 1,465 (19.21%) Jenkins
3 845 (11.08%) JIRA
4 779 (10.22%) Maven
5 705 (9.24%) Selenium
6 552 (7.24%) Cucumber
7 494 (6.48%) JUnit
8 311 (4.08%) TeamCity
9 307 (4.03%) Subversion
10 297 (3.89%) NUnit
11 272 (3.57%) Mockito
12 269 (3.53%) webpack
13 217 (2.85%) gulp
14 216 (2.83%) Team Foundation Server
15 207 (2.71%) Gradle
16 196 (2.57%) WebDriver
17 195 (2.56%) Octopus Deploy
18 183 (2.40%) Jasmine
19 179 (2.35%) Visual Studio
20 176 (2.31%) SpecFlow
General
1 1,315 (17.24%) Finance
2 595 (7.80%) Banking
3 283 (3.71%) Retail
4 227 (2.98%) Front Office
5 213 (2.79%) Telecoms
6 188 (2.47%) Marketing
7 172 (2.26%) Investment Banking
8 163 (2.14%) Games
9 122 (1.60%) Manufacturing
10 117 (1.53%) Electronics
11 76 (1.00%) Law
12 66 (0.87%) Publishing
13 62 (0.81%) Financial Institution
14 58 (0.76%) Advertising
15 56 (0.73%) Back Office
16 34 (0.45%) Automotive
17 28 (0.37%) Legal
18 20 (0.26%) Retail Banking
19 11 (0.14%) Pharmaceutical
20 9 (0.12%) Billing
Job Titles
1 5,848 (76.69%) Developer
2 2,066 (27.09%) Java Developer
3 919 (12.05%) .NET Developer
4 913 (11.97%) Senior Developer
5 705 (9.24%) C# Developer
6 570 (7.47%) React Developer
7 539 (7.07%) Front End Developer (Client-Side Developer)
8 498 (6.53%) JavaScript Developer
9 400 (5.25%) Full Stack Developer
10 370 (4.85%) Senior Java Developer
11 358 (4.69%) Angular Developer
12 354 (4.64%) Agile Developer
13 340 (4.46%) C# .NET Developer
14 251 (3.29%) Software Engineer
15 243 (3.19%) AWS Developer
16 233 (3.06%) Lead Developer
17 205 (2.69%) Scala Developer
18 198 (2.60%) Python Developer
19 191 (2.50%) Node.js Developer
20 181 (2.37%) Architect
Libraries, Frameworks & Software Standards
1 1,689 (22.15%) .NET
2 1,629 (21.36%) HTML
3 1,571 (20.60%) Spring
4 1,550 (20.33%) AngularJS
5 1,533 (20.10%) CSS
6 1,379 (18.08%) REST
7 1,344 (17.62%) RESTful
8 1,244 (16.31%) React
9 1,209 (15.85%) Web Services
10 1,165 (15.28%) Node.js
11 921 (12.08%) Spring Boot
12 872 (11.43%) HTML5
13 663 (8.69%) ASP.NET
14 655 (8.59%) JSON
15 615 (8.06%) ASP.NET Web API
16 608 (7.97%) Hibernate
17 570 (7.47%) CSS3
18 555 (7.28%) SOAP
19 487 (6.39%) jQuery
20 460 (6.03%) Sass
Miscellaneous
1 1,002 (13.14%) Greenfield Project
2 527 (6.91%) User Experience
3 346 (4.54%) Fintech
4 323 (4.24%) Mobile App
5 283 (3.71%) Analytical Skills
6 263 (3.45%) Computer Science
7 145 (1.90%) Enterprise Software
8 143 (1.88%) Algorithms
9 135 (1.77%) Data Structures
10 129 (1.69%) Fixed Income
11 120 (1.57%) Derivative
12 114 (1.49%) Self-Motivation
13 104 (1.36%) Foreign Exchange (FX)
14 87 (1.14%) iPad
15 86 (1.13%) Equities
16 57 (0.75%) Video on Demand
17 56 (0.73%) Cloud Native
18 54 (0.71%) Virtual Team
19 50 (0.66%) Public Cloud
19 50 (0.66%) Video\Live Streaming
Operating Systems
1 695 (9.11%) Linux
2 359 (4.71%) Unix
3 277 (3.63%) Apple iOS
4 273 (3.58%) Windows
5 265 (3.47%) Android
6 48 (0.63%) Red Hat Enterprise Linux
7 46 (0.60%) Windows Server
8 38 (0.50%) Mac OS X
8 38 (0.50%) VMS
9 30 (0.39%) Mac OS
10 17 (0.22%) Solaris
11 11 (0.14%) CentOS
12 7 (0.092%) Windows 7
13 6 (0.079%) Ubuntu
13 6 (0.079%) Windows 8
14 5 (0.066%) Embedded Linux
15 4 (0.052%) Oracle Linux
16 3 (0.039%) DC/OS
16 3 (0.039%) Windows Server 2003
17 2 (0.026%) CoreOS
Processes & Methodologies
1 5,665 (74.29%) Agile Software Development
2 3,168 (41.54%) BDD
3 2,071 (27.16%) Scrum
4 1,985 (26.03%) Continuous Integration
5 1,917 (25.14%) Microservices
6 1,521 (19.94%) Test Automation
7 1,262 (16.55%) DevOps
8 1,101 (14.44%) MVC
9 1,055 (13.83%) OO
10 1,007 (13.20%) Kanban
11 941 (12.34%) Software Engineering
12 825 (10.82%) Pair Programming
13 770 (10.10%) Front End Development
14 764 (10.02%) Unit Testing
15 617 (8.09%) E-Commerce
16 614 (8.05%) Continuous Delivery
17 586 (7.68%) SOA
18 493 (6.46%) Problem-Solving
19 474 (6.22%) Open Source
20 441 (5.78%) SDLC
Programming Languages
1 3,388 (44.43%) Java
2 2,784 (36.51%) JavaScript
3 1,727 (22.65%) C#
4 1,379 (18.08%) SQL
5 1,174 (15.39%) Java 8
6 783 (10.27%) Python
7 532 (6.98%) Scala
8 413 (5.42%) TypeScript
9 361 (4.73%) Ruby
10 329 (4.31%) ES6
11 254 (3.33%) PHP
12 219 (2.87%) Groovy
13 175 (2.29%) Apple Swift
14 166 (2.18%) T-SQL
15 144 (1.89%) Go
16 130 (1.70%) Kotlin
17 128 (1.68%) C++
18 117 (1.53%) Bash Shell
19 104 (1.36%) Objective-C
20 90 (1.18%) C
Qualifications
1 378 (4.96%) Security Cleared
2 352 (4.62%) Degree
3 305 (4.00%) SC Cleared
4 121 (1.59%) Computer Science Degree
5 113 (1.48%) BPSS Clearance
6 59 (0.77%) ISTQB
7 43 (0.56%) ISEB
8 25 (0.33%) Master's Degree
9 21 (0.28%) DV Cleared
9 21 (0.28%) Numerate Degree
10 13 (0.17%) ISTQB Foundation Certification
11 12 (0.16%) AWS Certification
11 12 (0.16%) BC Cleared
12 11 (0.14%) DBS Check
12 11 (0.14%) PhD
13 9 (0.12%) CTC Cleared
14 6 (0.079%) CITP
14 6 (0.079%) ISEB Practitioner
14 6 (0.079%) PMI Certification
15 5 (0.066%) PMP
Quality Assurance & Compliance
1 494 (6.48%) QA
2 28 (0.37%) PMO
3 23 (0.30%) Data Quality
4 21 (0.28%) WCAG
5 14 (0.18%) GDPR
6 13 (0.17%) PCI DSS
7 11 (0.14%) MiFID
8 10 (0.13%) EMIR
9 9 (0.12%) Disclosure Scotland
9 9 (0.12%) ISO/IEC 27001
10 5 (0.066%) SLA
11 3 (0.039%) ISO 20022
11 3 (0.039%) PSD2
12 2 (0.026%) Dodd-Frank
12 2 (0.026%) HL7
12 2 (0.026%) ISO 9001
12 2 (0.026%) WAI
13 1 (0.013%) DICOM
13 1 (0.013%) ECSS
13 1 (0.013%) Solvency II
System Software
1 1,284 (16.84%) Docker
2 66 (0.87%) VMware Infrastructure
3 65 (0.85%) HDFS
4 53 (0.69%) vSphere
5 48 (0.63%) Apache ZooKeeper
6 20 (0.26%) Active Directory
6 20 (0.26%) Virtual Machines
7 11 (0.14%) VirtualBox
8 6 (0.079%) Apache Flume
8 6 (0.079%) LXC
9 5 (0.066%) Firmware
10 4 (0.052%) Platform Symphony
11 3 (0.039%) Microsoft App-V
11 3 (0.039%) OpenAM
12 2 (0.026%) KVM
12 2 (0.026%) Postfix
13 1 (0.013%) Ceph
13 1 (0.013%) IAG
13 1 (0.013%) OpenIDM
13 1 (0.013%) vCloud
Systems Management
1 528 (6.92%) Ansible
2 490 (6.43%) Kubernetes
3 386 (5.06%) Puppet
4 330 (4.33%) Opscode Chef
5 242 (3.17%) Terraform
6 67 (0.88%) Kibana
6 67 (0.88%) Mesos
7 55 (0.72%) Hadoop YARN
8 51 (0.67%) Cobbler
8 51 (0.67%) Grafana
9 43 (0.56%) logstash
10 25 (0.33%) Single Sign-On
11 24 (0.31%) HP Quality Center
11 24 (0.31%) Packer
12 23 (0.30%) Prometheus
13 19 (0.25%) Oozie
14 18 (0.24%) Consul
14 18 (0.24%) Docker Swarm
15 16 (0.21%) Business Desktop Deployment
16 14 (0.18%) ZABBIX
Vendors
1 592 (7.76%) Oracle
2 501 (6.57%) Microsoft
3 262 (3.44%) Google
4 129 (1.69%) SAP
5 87 (1.14%) IBM
5 87 (1.14%) WSO2
6 77 (1.01%) Atlassian
7 75 (0.98%) Splunk
8 70 (0.92%) Sitecore
9 69 (0.90%) VMware
10 66 (0.87%) Adobe
11 50 (0.66%) Red Hat
11 50 (0.66%) Sybase
12 49 (0.64%) Apple
13 38 (0.50%) Xamarin
14 37 (0.49%) Cloudera
15 35 (0.46%) Apiary
15 35 (0.46%) MuleSoft
16 33 (0.43%) TIBCO
17 30 (0.39%) Salesforce.com