Period
to 18 December 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 18 December 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK
6 months to
18 Dec 2018
Same period 2017 Same period 2016
Rank 24 20 22
Rank change year-on-year -4 +2 +3
Permanent jobs citing TDD 12,741 16,095 15,020
As % of all permanent IT jobs advertised in the UK 8.01% 8.98% 8.17%
As % of the Processes & Methodologies category 8.74% 9.78% 8.95%
Number of salaries quoted 10,750 13,822 13,570
UK median annual salary £55,000 £52,500 £50,000
Median salary % change year-on-year +4.76% +5.00% -
10th Percentile £33,750 £32,500 £32,500
90th Percentile £87,500 £78,750 £77,500
UK excluding London median annual salary £50,000 £45,000 £45,000
% change year-on-year +11.11% - +5.88%

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 145,715 164,618 167,894
As % of all permanent IT jobs advertised in the UK 91.61% 91.88% 91.31%
Number of salaries quoted 115,073 131,024 139,285
UK median annual salary £52,500 £50,000 £48,500
Median salary % change year-on-year +5.00% +3.09% +2.11%
10th Percentile £29,750 £28,500 £27,750
90th Percentile £85,000 £80,000 £78,750
UK excluding London median annual salary £45,000 £43,750 £42,500
% change year-on-year +2.86% +2.94% -

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 18 December 2018.

Salary histogram for TDD in the UK

TDD
Top 17 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 18 December 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 -4 11,997 £55,000 +4.76% 1,887
UK excluding London -4 6,576 £50,000 +11.11% 1,085
London -4 5,953 £67,500 +8.00% 911
South East -5 2,084 £50,000 +11.11% 275
North of England 0 1,852 £47,500 +5.56% 311
North West -2 1,042 £50,000 +11.11% 153
South West -3 789 £48,000 +5.49% 122
Yorkshire +6 686 £45,000 - 120
East of England -8 664 £52,500 +7.26% 102
Midlands -5 663 £45,000 +8.43% 166
Scotland -15 383 £47,500 -5.00% 80
West Midlands +2 382 £45,000 +12.50% 98
East Midlands -10 281 £42,000 -1.18% 68
North East +16 128 £45,000 - 38
Wales -1 120 £45,000 +12.50% 22
Northern Ireland +3 60 £42,500 +6.25% 7
Channel Islands - 1 £42,500 -

For the 6 months to 18 December 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 9,666 (75.87%) Agile Software Development
2 5,503 (43.19%) C#
3 5,110 (40.11%) BDD
4 5,052 (39.65%) JavaScript
5 4,850 (38.07%) .NET
6 4,817 (37.81%) Java
7 3,700 (29.04%) Scrum
8 3,630 (28.49%) Continuous Integration
9 3,467 (27.21%) SQL
10 3,375 (26.49%) MVC
11 3,147 (24.70%) AngularJS
12 3,094 (24.28%) SQL Server
13 2,993 (23.49%) HTML
14 2,775 (21.78%) ASP.NET
15 2,768 (21.73%) Git (software)
16 2,680 (21.03%) CSS
17 2,670 (20.96%) Software Engineering
18 2,405 (18.88%) Finance
19 2,362 (18.54%) Microservices
20 2,277 (17.87%) RESTful
21 2,263 (17.76%) Test Automation
22 2,075 (16.29%) Amazon AWS
23 2,065 (16.21%) ASP.NET MVC
24 1,985 (15.58%) DevOps
25 1,898 (14.90%) ASP.NET Web API
26 1,882 (14.77%) Node.js
27 1,856 (14.57%) Spring
28 1,854 (14.55%) OO
29 1,832 (14.38%) Microsoft Azure
30 1,753 (13.76%) React

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
1 418 (3.28%) Elasticsearch
2 386 (3.03%) Confluence
3 303 (2.38%) Apache
4 302 (2.37%) CMS
5 286 (2.24%) Apache Spark
6 206 (1.62%) Tomcat
7 175 (1.37%) IIS
8 149 (1.17%) JBoss
9 136 (1.07%) EPiServer
10 105 (0.82%) WebSphere
11 97 (0.76%) Umbraco
12 95 (0.75%) Sitecore CMS
13 87 (0.68%) SharePoint
14 86 (0.67%) nginx
15 80 (0.63%) NServiceBus
16 78 (0.61%) WordPress
17 62 (0.49%) Drupal
18 61 (0.48%) Cloud Foundry
19 60 (0.47%) WebLogic
20 56 (0.44%) MQSeries
Applications
1 36 (0.28%) Microsoft Excel
2 32 (0.25%) Microsoft Office
3 21 (0.16%) Microsoft Project
4 17 (0.13%) Photoshop
5 16 (0.13%) MS Visio
6 14 (0.11%) Chatbot
6 14 (0.11%) Microsoft PowerPoint
7 11 (0.086%) Spreadsheet
8 6 (0.047%) Maya
9 5 (0.039%) Adobe Illustrator
9 5 (0.039%) Fireworks
9 5 (0.039%) Open Workbench
10 4 (0.031%) Adobe Creative Suite
10 4 (0.031%) Mingle
10 4 (0.031%) Snapchat
11 3 (0.024%) Doxygen
11 3 (0.024%) InVision
12 2 (0.016%) LibreOffice
13 1 (0.008%) HipChat
13 1 (0.008%) InfoPath
Business Applications
1 72 (0.57%) Payment Gateway
2 62 (0.49%) Dynamics CRM
3 30 (0.24%) Eloqua
3 30 (0.24%) Magento
4 13 (0.10%) Markit EDM
5 12 (0.094%) Dynamics AX
6 11 (0.086%) Dynamics NAV
7 9 (0.071%) FastStats
8 8 (0.063%) Distributed Ledger
8 8 (0.063%) Oracle BPM
8 8 (0.063%) thinkFolio
9 6 (0.047%) BusinessWorks
9 6 (0.047%) Eagle PACE
9 6 (0.047%) Oracle EBS
9 6 (0.047%) Oracle Retail
10 5 (0.039%) Adobe Campaign
10 5 (0.039%) Bloomberg AIM
10 5 (0.039%) Front Arena
10 5 (0.039%) SAP FI
11 4 (0.031%) SunGard GMI
Cloud Services
1 2,075 (16.29%) Amazon AWS
2 1,832 (14.38%) Microsoft Azure
3 375 (2.94%) GitHub
4 331 (2.60%) SaaS
5 318 (2.50%) Google Cloud Platform
6 311 (2.44%) Serverless
7 266 (2.09%) npm
8 167 (1.31%) Cloud Computing
9 161 (1.26%) Amazon EC2
10 144 (1.13%) PaaS
11 115 (0.90%) AWS Lambda
12 114 (0.89%) OpenShift
13 86 (0.67%) IaaS
14 74 (0.58%) Office 365
15 73 (0.57%) Amazon S3
16 54 (0.42%) NuGet
17 52 (0.41%) Amazon SQS
18 43 (0.34%) G Suite
19 42 (0.33%) Amazon EMR
20 40 (0.31%) Yarn
Communications & Networking
1 492 (3.86%) Internet
2 261 (2.05%) HTTP
3 75 (0.59%) Broadband
4 63 (0.49%) SSL
5 62 (0.49%) Hyperconnected
6 55 (0.43%) TCP/IP
7 36 (0.28%) Wireless
8 29 (0.23%) Wi-Fi
9 25 (0.20%) Firewall
10 24 (0.19%) AMQP
11 19 (0.15%) DNS
12 18 (0.14%) Bluetooth
12 18 (0.14%) VLAN
13 15 (0.12%) RIP
14 14 (0.11%) SMS
15 13 (0.10%) Network Security
16 12 (0.094%) OpenLDAP
16 12 (0.094%) SSH
17 10 (0.078%) HTTPS
17 10 (0.078%) Skype
Database & Business Intelligence
1 3,094 (24.28%) SQL Server
2 1,636 (12.84%) NoSQL
3 1,145 (8.99%) SQL Server 2016
4 785 (6.16%) MySQL
5 745 (5.85%) MongoDB
6 723 (5.67%) Big Data
7 624 (4.90%) PostgreSQL
8 560 (4.40%) Relational Database
9 315 (2.47%) Apache Cassandra
10 298 (2.34%) Redis
11 282 (2.21%) Hadoop
12 175 (1.37%) RDBMS
13 160 (1.26%) SQL Server Integration Services
14 146 (1.15%) Amazon DynamoDB
15 133 (1.04%) Blockchain
16 126 (0.99%) Oracle Database
17 111 (0.87%) SQL Server Reporting Services
18 103 (0.81%) SQL Server 2012
19 93 (0.73%) Data Warehouse
20 88 (0.69%) Cosmos DB
Development Applications
1 2,768 (21.73%) Git (software)
2 1,466 (11.51%) Jenkins
3 1,162 (9.12%) Selenium
4 1,061 (8.33%) JIRA
5 836 (6.56%) Visual Studio
6 738 (5.79%) Maven
7 733 (5.75%) Cucumber
8 630 (4.94%) TeamCity
9 609 (4.78%) JUnit
10 595 (4.67%) Team Foundation Server
11 465 (3.65%) NUnit
12 411 (3.23%) Subversion
13 334 (2.62%) gulp
14 325 (2.55%) WebDriver
15 315 (2.47%) SpecFlow
16 294 (2.31%) webpack
17 290 (2.28%) Octopus Deploy
18 286 (2.24%) SoapUI
19 277 (2.17%) Gradle
20 224 (1.76%) Mocha
General
1 2,405 (18.88%) Finance
2 749 (5.88%) Banking
3 691 (5.42%) Games
4 686 (5.38%) Retail
5 459 (3.60%) Marketing
6 271 (2.13%) Telecoms
7 243 (1.91%) Advertising
8 196 (1.54%) Electronics
9 185 (1.45%) Manufacturing
10 175 (1.37%) Investment Banking
11 153 (1.20%) Front Office
12 149 (1.17%) Law
13 129 (1.01%) Financial Institution
14 114 (0.89%) Automotive
15 99 (0.78%) Publishing
16 83 (0.65%) Back Office
17 74 (0.58%) Legal
18 53 (0.42%) Pharmaceutical
19 38 (0.30%) Music Industry
20 33 (0.26%) Military
Job Titles
1 8,878 (69.68%) Developer
2 2,923 (22.94%) .NET Developer
3 2,369 (18.59%) Java Developer
4 2,247 (17.64%) C# Developer
5 1,844 (14.47%) Senior Developer
6 1,598 (12.54%) C# .NET Developer
7 1,160 (9.10%) Software Engineer
8 896 (7.03%) Software Developer
9 703 (5.52%) ASP.NET Developer
10 664 (5.21%) C# ASP.NET Developer
11 557 (4.37%) Senior Java Developer
12 556 (4.36%) JavaScript Developer
13 555 (4.36%) Agile Developer
14 531 (4.17%) Lead Developer
15 511 (4.01%) Front End Developer (Client-Side Developer)
16 481 (3.78%) Senior .NET Developer
17 456 (3.58%) ASP.NET MVC Developer
18 448 (3.52%) Full Stack Developer
18 448 (3.52%) Java Engineer
19 357 (2.80%) Test Engineer
Libraries, Frameworks & Software Standards
1 4,850 (38.07%) .NET
2 3,147 (24.70%) AngularJS
3 2,993 (23.49%) HTML
4 2,775 (21.78%) ASP.NET
5 2,680 (21.03%) CSS
6 2,277 (17.87%) RESTful
7 2,065 (16.21%) ASP.NET MVC
8 1,898 (14.90%) ASP.NET Web API
9 1,882 (14.77%) Node.js
10 1,856 (14.57%) Spring
11 1,753 (13.76%) React
12 1,693 (13.29%) Web Services
13 1,615 (12.68%) REST
14 1,361 (10.68%) .NET Framework
15 1,314 (10.31%) HTML5
16 1,192 (9.36%) jQuery
17 1,156 (9.07%) WCF
18 873 (6.85%) Entity Framework
19 860 (6.75%) Twitter Bootstrap
20 792 (6.22%) CSS3
Miscellaneous
1 1,547 (12.14%) Greenfield Project
2 904 (7.10%) User Experience
3 696 (5.46%) Fintech
4 576 (4.52%) Enterprise Software
5 517 (4.06%) Analytical Skills
6 445 (3.49%) Mobile App
7 317 (2.49%) Self-Motivation
8 229 (1.80%) Algorithms
9 135 (1.06%) Data Structures
10 120 (0.94%) Virtual Team
11 109 (0.86%) Tandem
12 100 (0.78%) Hedge funds
13 94 (0.74%) Cloud Native
14 89 (0.70%) Foreign Exchange (FX)
15 82 (0.64%) Social Media
16 80 (0.63%) Blog
17 78 (0.61%) Social Network
18 77 (0.60%) Linux Command Line
19 75 (0.59%) Derivative
20 74 (0.58%) Equities
Operating Systems
1 1,077 (8.45%) Linux
2 727 (5.71%) Windows
3 459 (3.60%) Android
4 399 (3.13%) Apple iOS
5 287 (2.25%) Unix
6 72 (0.57%) Windows Server
7 60 (0.47%) CentOS
8 39 (0.31%) Red Hat Enterprise Linux
9 37 (0.29%) Ubuntu
10 27 (0.21%) Mac OS X
11 20 (0.16%) openSUSE
11 20 (0.16%) Windows 10
12 13 (0.10%) Solaris
13 8 (0.063%) Debian
13 8 (0.063%) VMS
14 7 (0.055%) Windows 7
15 5 (0.039%) Embedded Linux
15 5 (0.039%) Mac OS
16 4 (0.031%) FreeBSD
16 4 (0.031%) watchOS
Processes & Methodologies
1 9,666 (75.87%) Agile Software Development
2 5,110 (40.11%) BDD
3 3,700 (29.04%) Scrum
4 3,630 (28.49%) Continuous Integration
5 3,375 (26.49%) MVC
6 2,670 (20.96%) Software Engineering
7 2,362 (18.54%) Microservices
8 2,263 (17.76%) Test Automation
9 1,985 (15.58%) DevOps
10 1,854 (14.55%) OO
11 1,586 (12.45%) Kanban
12 1,345 (10.56%) Unit Testing
13 1,237 (9.71%) Problem-Solving
14 1,225 (9.61%) Continuous Delivery
15 1,158 (9.09%) Pair Programming
16 1,111 (8.72%) SOLID
17 1,109 (8.70%) Web Application Development
18 1,017 (7.98%) Mentoring
19 976 (7.66%) SDLC
20 968 (7.60%) Web Development
Programming Languages
1 5,503 (43.19%) C#
2 5,052 (39.65%) JavaScript
3 4,817 (37.81%) Java
4 3,467 (27.21%) SQL
5 1,622 (12.73%) Python
6 1,236 (9.70%) Java 8
7 1,069 (8.39%) Ruby
8 786 (6.17%) C++
9 741 (5.82%) Scala
10 728 (5.71%) PHP
11 545 (4.28%) TypeScript
12 473 (3.71%) T-SQL
13 409 (3.21%) ES6
14 353 (2.77%) C
15 290 (2.28%) PowerShell
16 283 (2.22%) Go
17 170 (1.33%) Apple Swift
18 167 (1.31%) Bash Shell
19 148 (1.16%) Groovy
20 143 (1.12%) VB.NET
Qualifications
1 1,361 (10.68%) Degree
2 468 (3.67%) Computer Science Degree
3 377 (2.96%) Security Cleared
4 236 (1.85%) SC Cleared
5 121 (0.95%) DV Cleared
6 114 (0.89%) ISTQB
7 74 (0.58%) Microsoft Certification
8 70 (0.55%) ISEB
9 65 (0.51%) Numerate Degree
10 42 (0.33%) Master's Degree
11 33 (0.26%) SAFe Agilist
12 31 (0.24%) ISTQB Foundation Certification
13 30 (0.24%) PMI Certification
14 17 (0.13%) CISSP
15 15 (0.12%) AWS Certification
16 13 (0.10%) DBS Check
17 12 (0.094%) MCSE
17 12 (0.094%) PhD
18 11 (0.086%) MCPD
19 9 (0.071%) PRINCE2 Certification
Quality Assurance & Compliance
1 1,015 (7.97%) QA
2 59 (0.46%) GDPR
3 40 (0.31%) Data Quality
4 30 (0.24%) PSD2
5 21 (0.16%) PMO
6 18 (0.14%) WCAG
7 14 (0.11%) ISO/IEC 27001
7 14 (0.11%) SLA
8 6 (0.047%) PMBOK
9 4 (0.031%) EMIR
9 4 (0.031%) FATCA
9 4 (0.031%) MiFID
10 3 (0.024%) DICOM
10 3 (0.024%) PCI DSS
10 3 (0.024%) SEPA
11 2 (0.016%) COBIT
11 2 (0.016%) FedRAMP
11 2 (0.016%) ISO 9001
11 2 (0.016%) Web Application Security Consortium
12 1 (0.008%) WAI
System Software
1 1,409 (11.06%) Docker
2 86 (0.67%) Active Directory
3 49 (0.38%) HDFS
4 40 (0.31%) Apache ZooKeeper
5 30 (0.24%) Firmware
6 28 (0.22%) VMware Infrastructure
6 28 (0.22%) vSphere
7 27 (0.21%) VirtualBox
8 23 (0.18%) Virtual Machines
9 11 (0.086%) Hyper-V
10 10 (0.078%) Varnish
11 7 (0.055%) Apache Flume
12 6 (0.047%) Oracle RAC
13 5 (0.039%) LXC
13 5 (0.039%) VMware ESXi
14 4 (0.031%) NFS
14 4 (0.031%) Samba
14 4 (0.031%) VMware NSX
15 3 (0.024%) etcd
15 3 (0.024%) zsh
Systems Management
1 539 (4.23%) Kubernetes
2 408 (3.20%) Ansible
3 275 (2.16%) Terraform
4 260 (2.04%) Puppet
5 240 (1.88%) Opscode Chef
6 91 (0.71%) Kibana
7 63 (0.49%) HP Quality Center
8 46 (0.36%) Salt
9 31 (0.24%) Rancher
10 30 (0.24%) Grafana
11 28 (0.22%) HP ALM
12 25 (0.20%) Hadoop YARN
13 24 (0.19%) Mesos
14 22 (0.17%) Prometheus
15 18 (0.14%) ZABBIX
16 16 (0.13%) HAProxy
16 16 (0.13%) Packer
17 15 (0.12%) Nagios
18 14 (0.11%) Docker Swarm
19 13 (0.10%) logstash
Vendors
1 1,667 (13.08%) Microsoft
2 700 (5.49%) Oracle
3 556 (4.36%) Google
4 203 (1.59%) SAP
5 202 (1.59%) Xamarin
6 189 (1.48%) Facebook
7 141 (1.11%) Apple
8 137 (1.08%) Sitecore
9 132 (1.04%) Atlassian
10 102 (0.80%) WorldPay
11 82 (0.64%) Splunk
12 79 (0.62%) Zend
13 78 (0.61%) IBM
14 76 (0.60%) Twitter
15 72 (0.57%) Yahoo!
16 70 (0.55%) Sony
17 66 (0.52%) Sybase
18 62 (0.49%) HP
19 56 (0.44%) Adobe
19 56 (0.44%) Tableau