Period
to 25 April 2018

The following table provides summary statistics for permanent job vacancies with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 6 months to 25 April 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK
6 months to
25 Apr 2018
Same period 2017 Same period 2016
Rank 19 19 25
Rank change year-on-year 0 +6 +3
Permanent jobs citing TDD 16,236 15,506 16,070
As % of all permanent IT jobs advertised in the UK 9.18% 9.11% 7.85%
As % of the Processes & Methodologies category 10.10% 10.07% 8.72%
Number of salaries quoted 14,251 13,949 14,428
UK median annual salary £50,000 £50,000 £50,000
10th Percentile £32,500 £32,500 £32,500
90th Percentile £80,000 £77,500 £75,000
UK excluding London median annual salary £45,000 £45,000 £45,000

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for process or methodology skills.

All Process and Methodology Skills
UK
Permanent vacancies with a requirement for process or methodology skills 160,685 153,962 184,220
As % of all permanent IT jobs advertised in the UK 90.83% 90.48% 89.98%
Number of salaries quoted 130,206 126,729 153,106
UK median annual salary £50,000 £47,500 £47,500
Median salary % change year-on-year +5.26% - +5.56%
10th Percentile £29,250 £28,000 £27,500
90th Percentile £81,250 £78,750 £77,500
UK excluding London median annual salary £45,000 £42,500 £42,500
% change year-on-year +5.88% - +4.94%

TDD
Job Vacancy Trend

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

Job vacancy trend for TDD in the UK

TDD
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD.

Salary trend for TDD in the UK

TDD
Salary Histogram

The salary distribution of IT jobs citing TDD over the 6 months to 25 April 2018.

Salary histogram for TDD in the UK

TDD
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the UK over the 6 months to 25 April 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England 0 15,217 £52,180 +1.32% 2,246
UK excluding London +2 9,117 £45,000 - 1,241
London -1 6,882 £62,500 +4.17% 1,108
South East -1 2,895 £47,500 - 335
North of England +2 2,386 £45,000 - 350
North West +3 1,394 £45,000 - 189
East of England +5 1,118 £50,000 +11.11% 146
South West +4 1,095 £47,500 +7.95% 145
Yorkshire +1 851 £45,000 - 142
Midlands -6 831 £42,500 - 161
Scotland +3 588 £50,000 +11.11% 70
West Midlands -23 416 £43,500 +2.35% 83
East Midlands -8 415 £42,500 -5.56% 78
Wales +4 167 £40,000 -5.88% 26
North East -7 142 £45,000 +12.50% 19
Northern Ireland +14 43 £40,000 -11.11% 8

For the 6 months to 25 April 2018, IT 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 permanent job ads with a requirement for TDD.

1 13,113 (80.76%) Agile Software Development
2 7,792 (47.99%) C#
3 7,594 (46.77%) BDD
4 6,984 (43.02%) .NET
5 5,891 (36.28%) JavaScript
6 5,850 (36.03%) Java
7 5,492 (33.83%) MVC
8 5,285 (32.55%) SQL Server
9 5,016 (30.89%) Scrum
10 4,586 (28.25%) ASP.NET
11 4,119 (25.37%) Continuous Integration
12 3,991 (24.58%) AngularJS
13 3,850 (23.71%) HTML
14 3,829 (23.58%) ASP.NET MVC
15 3,794 (23.37%) RESTful
16 3,787 (23.32%) SQL
17 3,703 (22.81%) Git (software)
18 3,476 (21.41%) CSS
19 3,282 (20.21%) Software Engineering
20 3,110 (19.15%) Test Automation
21 3,057 (18.83%) ASP.NET Web API
22 2,949 (18.16%) Node.js
23 2,930 (18.05%) Finance
24 2,823 (17.39%) NoSQL
25 2,715 (16.72%) Web Application Development
26 2,642 (16.27%) OO
27 2,603 (16.03%) WCF
28 2,551 (15.71%) Amazon AWS
29 2,460 (15.15%) ASP.NET MVC 5
30 2,319 (14.28%) Ruby

TDD
Co-occurring IT Skills 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
1 707 (4.35%) Elasticsearch
2 412 (2.54%) Tomcat
3 373 (2.30%) Confluence
4 365 (2.25%) Apache Spark
5 343 (2.11%) CMS
6 284 (1.75%) JBoss
7 261 (1.61%) Apache
8 183 (1.13%) IIS
9 156 (0.96%) Umbraco
10 152 (0.94%) Apache Solr
11 142 (0.87%) EPiServer
12 132 (0.81%) SharePoint
13 129 (0.79%) nginx
14 123 (0.76%) WebSphere
15 119 (0.73%) WebLogic
16 117 (0.72%) Sitecore CMS
17 115 (0.71%) OpenStack
18 104 (0.64%) Mule
19 96 (0.59%) Cloud Foundry
20 73 (0.45%) Jetty
Applications
1 63 (0.39%) Microsoft Excel
2 37 (0.23%) Photoshop
3 22 (0.14%) Microsoft Office
4 20 (0.12%) Adobe Illustrator
5 17 (0.10%) Chatbot
6 8 (0.049%) MS Visio
7 7 (0.043%) Adobe Premiere
8 6 (0.037%) GIMP
8 6 (0.037%) Microsoft PowerPoint
9 5 (0.031%) Simulink
10 4 (0.025%) InfoPath
10 4 (0.025%) Microsoft Project
10 4 (0.025%) Spreadsheet
11 2 (0.012%) AutoCAD
11 2 (0.012%) Revit
11 2 (0.012%) S-PLUS
12 1 (0.006%) Blender
12 1 (0.006%) Mathcad
Business Applications
1 60 (0.37%) Dynamics CRM
2 52 (0.32%) Payment Gateway
3 43 (0.26%) Magento
4 34 (0.21%) Distributed Ledger
5 26 (0.16%) Eloqua
6 17 (0.10%) Eagle PACE
6 17 (0.10%) Front Arena
6 17 (0.10%) thinkFolio
7 12 (0.074%) Dynamics NAV
7 12 (0.074%) Salesforce.com CRM
8 8 (0.049%) Infor M3
8 8 (0.049%) Oracle Retail
9 6 (0.037%) Oracle EBS
10 5 (0.031%) Bloomberg AIM
10 5 (0.031%) Markit EDM
10 5 (0.031%) SAP Hybris
11 3 (0.018%) BASE24
11 3 (0.018%) SAP ERP
11 3 (0.018%) SAP S/4HANA
11 3 (0.018%) Workday HCM
Cloud Services
1 2,551 (15.71%) Amazon AWS
2 1,778 (10.95%) Microsoft Azure
3 531 (3.27%) GitHub
4 379 (2.33%) SaaS
5 275 (1.69%) npm
6 232 (1.43%) Google Cloud Platform
7 226 (1.39%) Serverless
8 214 (1.32%) PaaS
9 173 (1.07%) Cloud Computing
10 150 (0.92%) IaaS
11 137 (0.84%) Amazon EC2
12 133 (0.82%) Slack
13 115 (0.71%) OpenShift
14 112 (0.69%) Amazon S3
15 101 (0.62%) Google Play
16 92 (0.57%) AWS Lambda
17 75 (0.46%) NuGet
18 61 (0.38%) AWS CloudFormation
18 61 (0.38%) Office 365
19 47 (0.29%) Amazon SQS
Communications & Networking
1 547 (3.37%) Internet
2 350 (2.16%) HTTP
3 134 (0.83%) Wireless
4 118 (0.73%) Broadband
5 113 (0.70%) Hyperconnected
6 48 (0.30%) SSL
7 45 (0.28%) TCP/IP
8 42 (0.26%) AMQP
9 35 (0.22%) VPN
10 31 (0.19%) SMS
11 24 (0.15%) DNS
12 21 (0.13%) Firewall
12 21 (0.13%) Skype
13 19 (0.12%) IPv4
14 18 (0.11%) IPv6
15 17 (0.10%) Intranet
16 15 (0.092%) SSH
17 10 (0.062%) SMTP
17 10 (0.062%) Value-Added Service
18 9 (0.055%) FIX Connectivity
Database & Business Intelligence
1 5,285 (32.55%) SQL Server
2 2,823 (17.39%) NoSQL
3 1,976 (12.17%) SQL Server 2016
4 1,124 (6.92%) MongoDB
5 1,113 (6.86%) MySQL
6 869 (5.35%) Big Data
7 741 (4.56%) SQL Server 2014
8 732 (4.51%) Relational Database
9 648 (3.99%) PostgreSQL
10 424 (2.61%) Hadoop
11 367 (2.26%) Apache Cassandra
12 356 (2.19%) Redis
13 216 (1.33%) RDBMS
14 203 (1.25%) Blockchain
15 196 (1.21%) Amazon DynamoDB
16 153 (0.94%) Neo4j
16 153 (0.94%) SQL Server Integration Services
17 140 (0.86%) SQL Server 2012
18 139 (0.86%) Couchbase
19 124 (0.76%) SQL Server 2008
Development Applications
1 3,703 (22.81%) Git (software)
2 1,594 (9.82%) Jenkins
3 1,577 (9.71%) Selenium
4 1,212 (7.46%) JIRA
5 1,093 (6.73%) NUnit
6 1,004 (6.18%) Cucumber
7 855 (5.27%) Maven
8 766 (4.72%) JUnit
9 749 (4.61%) Visual Studio
10 738 (4.55%) Team Foundation Server
11 694 (4.27%) Subversion
12 648 (3.99%) TeamCity
13 564 (3.47%) Rhino Mocks
14 469 (2.89%) Moq
15 459 (2.83%) WebDriver
16 444 (2.73%) Atlassian Bamboo
16 444 (2.73%) Gradle
17 415 (2.56%) MSTest
18 399 (2.46%) gulp
19 353 (2.17%) webpack
General
1 2,930 (18.05%) Finance
2 1,007 (6.20%) Games
3 916 (5.64%) Retail
4 858 (5.28%) Banking
5 675 (4.16%) Marketing
6 624 (3.84%) Advertising
7 404 (2.49%) Telecoms
8 270 (1.66%) Electronics
9 214 (1.32%) Investment Banking
10 183 (1.13%) Music Industry
11 177 (1.09%) Manufacturing
12 150 (0.92%) Law
13 140 (0.86%) Financial Institution
14 134 (0.83%) Legal
15 132 (0.81%) Front Office
16 128 (0.79%) Publishing
17 116 (0.71%) Back Office
18 77 (0.47%) Automotive
19 54 (0.33%) Online Betting
20 31 (0.19%) Pharmaceutical
Job Titles
1 11,648 (71.74%) Developer
2 4,572 (28.16%) .NET Developer
3 2,696 (16.61%) Java Developer
4 2,574 (15.85%) C# Developer
5 2,027 (12.48%) Senior Developer
6 1,743 (10.74%) C# .NET Developer
7 1,286 (7.92%) Software Engineer
8 1,136 (7.00%) Software Developer
9 944 (5.81%) ASP.NET Developer
10 908 (5.59%) C# ASP.NET Developer
11 738 (4.55%) ASP.NET MVC Developer
12 718 (4.42%) Senior Java Developer
13 709 (4.37%) Java Engineer
14 697 (4.29%) JavaScript Developer
15 639 (3.94%) Agile Developer
16 588 (3.62%) Lead Developer
17 585 (3.60%) Front End Developer (Client-Side Developer)
18 475 (2.93%) Full Stack Developer
19 416 (2.56%) Senior .NET Developer
20 406 (2.50%) Java Software Engineer
Libraries, Frameworks & Software Standards
1 6,984 (43.02%) .NET
2 4,586 (28.25%) ASP.NET
3 3,991 (24.58%) AngularJS
4 3,850 (23.71%) HTML
5 3,829 (23.58%) ASP.NET MVC
6 3,794 (23.37%) RESTful
7 3,476 (21.41%) CSS
8 3,057 (18.83%) ASP.NET Web API
9 2,949 (18.16%) Node.js
10 2,603 (16.03%) WCF
11 2,460 (15.15%) ASP.NET MVC 5
12 2,211 (13.62%) Web Services
13 2,158 (13.29%) Spring
14 2,040 (12.56%) .NET Framework
15 1,826 (11.25%) HTML5
16 1,815 (11.18%) React
17 1,723 (10.61%) REST
18 1,522 (9.37%) Entity Framework
19 1,446 (8.91%) jQuery
20 1,248 (7.69%) Twitter Bootstrap
Miscellaneous
1 1,936 (11.92%) Greenfield Project
2 1,229 (7.57%) Computer Science
3 1,060 (6.53%) User Experience
4 895 (5.51%) Fintech
5 777 (4.79%) Mobile App
6 768 (4.73%) Enterprise Software
7 643 (3.96%) Analytical Skills
8 364 (2.24%) Self-Motivation
9 336 (2.07%) Algorithms
10 225 (1.39%) Data Structures
11 171 (1.05%) Linux Command Line
12 168 (1.03%) Tandem
13 167 (1.03%) Social Network
14 150 (0.92%) Social Media
15 141 (0.87%) Client/Server
16 128 (0.79%) Online Games
17 126 (0.78%) Cloud Native
18 119 (0.73%) BBC
19 109 (0.67%) Foreign Exchange (FX)
20 108 (0.67%) Equities
Operating Systems
1 1,702 (10.48%) Linux
2 1,241 (7.64%) Windows
3 698 (4.30%) Android
4 574 (3.54%) Apple iOS
5 427 (2.63%) Unix
6 82 (0.51%) Windows Server
7 54 (0.33%) Mac OS
8 45 (0.28%) CentOS
9 39 (0.24%) Ubuntu
10 31 (0.19%) Embedded Linux
11 30 (0.18%) Red Hat Enterprise Linux
12 29 (0.18%) Nucleus RTOS
13 27 (0.17%) Windows Phone
14 21 (0.13%) Solaris
15 18 (0.11%) Debian
16 17 (0.10%) Amazon Linux
17 13 (0.080%) FreeBSD
18 12 (0.074%) VMS
19 8 (0.049%) openSUSE
19 8 (0.049%) Windows 7
Processes & Methodologies
1 13,113 (80.76%) Agile Software Development
2 7,594 (46.77%) BDD
3 5,492 (33.83%) MVC
4 5,016 (30.89%) Scrum
5 4,119 (25.37%) Continuous Integration
6 3,282 (20.21%) Software Engineering
7 3,110 (19.15%) Test Automation
8 2,715 (16.72%) Web Application Development
9 2,642 (16.27%) OO
10 2,196 (13.53%) Microservices
11 2,131 (13.13%) Kanban
12 2,094 (12.90%) DevOps
13 1,593 (9.81%) Unit Testing
14 1,512 (9.31%) Problem-Solving
15 1,308 (8.06%) SDLC
16 1,203 (7.41%) Dependency Injection
17 1,166 (7.18%) Mentoring
18 1,126 (6.94%) SOLID
19 1,104 (6.80%) Web Development
20 1,099 (6.77%) Continuous Delivery
Programming Languages
1 7,792 (47.99%) C#
2 5,891 (36.28%) JavaScript
3 5,850 (36.03%) Java
4 3,787 (23.32%) SQL
5 2,319 (14.28%) Ruby
6 1,832 (11.28%) Python
7 1,274 (7.85%) Java 8
8 1,077 (6.63%) PHP
9 1,043 (6.42%) C++
10 922 (5.68%) Scala
11 627 (3.86%) T-SQL
12 611 (3.76%) TypeScript
13 485 (2.99%) C
14 412 (2.54%) ES6
15 369 (2.27%) VB.NET
16 294 (1.81%) Go
17 284 (1.75%) Groovy
18 239 (1.47%) Objective-C
19 229 (1.41%) Bash Shell
20 225 (1.39%) F#
Qualifications
1 1,651 (10.17%) Degree
2 596 (3.67%) Computer Science Degree
3 348 (2.14%) Security Cleared
4 179 (1.10%) SC Cleared
5 152 (0.94%) ISEB
6 120 (0.74%) ISTQB
7 106 (0.65%) Microsoft Certification
8 87 (0.54%) DV Cleared
9 64 (0.39%) Master's Degree
10 49 (0.30%) SAFe Agilist
11 42 (0.26%) ISTQB Foundation Certification
12 41 (0.25%) Numerate Degree
13 40 (0.25%) MCPD
14 35 (0.22%) PhD
15 30 (0.18%) AWS Certification
16 21 (0.13%) PMI Certification
16 21 (0.13%) Sun Certification
17 19 (0.12%) MCTS
18 16 (0.099%) BPSS Clearance
18 16 (0.099%) PMP
Quality Assurance & Compliance
1 1,390 (8.56%) QA
2 64 (0.39%) PCI DSS
3 62 (0.38%) GDPR
4 58 (0.36%) GCP
5 28 (0.17%) WCAG
6 24 (0.15%) PMO
7 20 (0.12%) PSD2
8 19 (0.12%) Data Quality
9 14 (0.086%) ISO/IEC 27001
10 12 (0.074%) SLA
10 12 (0.074%) Web Application Security Consortium
11 8 (0.049%) GAMP
12 5 (0.031%) MiFID
13 4 (0.025%) EMIR
14 3 (0.018%) Disclosure Scotland
14 3 (0.018%) IEC 61508
14 3 (0.018%) IEC 62304
14 3 (0.018%) ISO 9001
14 3 (0.018%) SEPA
15 2 (0.012%) ISO 22301
System Software
1 1,398 (8.61%) Docker
2 112 (0.69%) VMware Infrastructure
3 59 (0.36%) VirtualBox
4 55 (0.34%) Hyper-V
5 43 (0.26%) HDFS
5 43 (0.26%) Xen
6 38 (0.23%) Active Directory
7 30 (0.18%) Apache Flume
8 25 (0.15%) Apache ZooKeeper
9 23 (0.14%) Firmware
10 22 (0.14%) Virtual Machines
11 11 (0.068%) KVM
12 9 (0.055%) vSphere
13 8 (0.049%) VMware ESXi
14 7 (0.043%) iptables
14 7 (0.043%) VMware Server
15 1 (0.006%) DRBD
15 1 (0.006%) Snort
15 1 (0.006%) Varnish
15 1 (0.006%) Virtual Servers
Systems Management
1 473 (2.91%) Ansible
2 453 (2.79%) Puppet
3 376 (2.32%) Opscode Chef
4 352 (2.17%) Kubernetes
5 223 (1.37%) Terraform
6 204 (1.26%) Kibana
7 101 (0.62%) Business Desktop Deployment
8 92 (0.57%) WSUS
9 88 (0.54%) HockeyApp
10 37 (0.23%) logstash
11 34 (0.21%) Cobbler
12 31 (0.19%) HP Quality Center
12 31 (0.19%) Packer
13 29 (0.18%) Marathon
14 28 (0.17%) Mesos
15 26 (0.16%) Salt
16 25 (0.15%) Single Sign-On
17 22 (0.14%) HP ALM
18 20 (0.12%) Nagios
19 14 (0.086%) CA Service Virtualization
Vendors
1 1,834 (11.30%) Microsoft
2 798 (4.92%) Google
3 765 (4.71%) Oracle
4 479 (2.95%) Facebook
5 215 (1.32%) Atlassian
6 167 (1.03%) Xamarin
7 166 (1.02%) Twitter
8 162 (1.00%) Apple
9 152 (0.94%) VMware
10 146 (0.90%) Sitecore
11 145 (0.89%) SAP
12 137 (0.84%) WorldPay
13 120 (0.74%) Capita
14 115 (0.71%) IBM
14 115 (0.71%) Salesforce.com
14 115 (0.71%) Sony
15 98 (0.60%) Splunk
15 98 (0.60%) Yahoo!
15 98 (0.60%) Zend
16 75 (0.46%) AppDynamics