Period
to 20 January 2021

The following table provides summary statistics for permanent job vacancies advertised in the UK excluding London 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 20 January 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > UK excluding London
6 months to
20 Jan 2021
Same period 2020 Same period 2019
Rank 36 35 28
Rank change year-on-year -1 -7 -5
Permanent jobs citing TDD 2,234 4,183 6,257
As % of all permanent jobs advertised in the UK excluding London 6.22% 5.91% 7.48%
As % of the Processes & Methodologies category 6.79% 6.48% 8.14%
Number of salaries quoted 2,258 3,712 5,679
Median annual salary £52,500 £50,000 £50,000
Median salary % change year-on-year +5.00% - +11.11%
10th Percentile £36,250 £33,750 £32,500
90th Percentile £77,500 £72,500 £71,250
UK median annual salary £60,000 £58,000 £55,000
% change year-on-year +3.45% +5.45% +10.00%

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 advertised in the UK excluding London with a requirement for process or methodology skills.

All Process and Methodology Skills
UK excluding London
Permanent vacancies with a requirement for process or methodology skills 32,888 64,569 76,911
As % of all permanent IT jobs advertised in the UK excluding London 91.62% 91.23% 91.95%
Number of salaries quoted 26,224 51,454 60,789
Median annual salary £49,000 £45,840 £45,000
Median salary % change year-on-year +6.89% +1.87% -
10th Percentile £31,000 £27,500 £27,000
90th Percentile £72,500 £72,500 £70,000
UK median annual salary £55,000 £52,500 £52,500
% change year-on-year +4.76% - +5.00%

TDD
Job Vacancy Trend in the UK excluding London

Job postings citing TDD as a proportion of all IT jobs advertised in the UK excluding London.

Job vacancy trend for TDD in the UK excluding London

TDD
Salary Trend in the UK excluding London

3-month moving average salary quoted in jobs citing TDD in the UK excluding London.

Salary trend for TDD in the UK excluding London

TDD
Salary Histogram in the UK excluding London

Salary distribution for jobs citing TDD in the UK excluding London over the 6 months to 20 January 2021.

Salary histogram for TDD in the UK excluding London

TDD
Job Locations in the UK excluding London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the UK excluding London region over the 6 months to 20 January 2021. 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
South East +4 730 £55,000 +6.80% 136
North of England -4 644 £52,500 +5.00% 238
North West -7 336 £55,000 +4.76% 158
Midlands +22 284 £55,000 +10.00% 87
South West +7 274 £50,000 - 59
Yorkshire -4 252 £50,000 - 56
West Midlands +42 212 £55,000 +10.00% 58
Scotland +2 170 £55,000 +10.00% 47
East of England -23 97 £62,500 +8.70% 50
East Midlands -7 71 £52,500 +16.67% 29
North East +3 56 £50,000 +11.11% 24
Wales -8 26 £50,000 - 23
Northern Ireland 0 14 £31,000 -43.64% 11
Isle of Man -11 2 - -
TDD
UK

For the 6 months to 20 January 2021, 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 across the UK excluding London region with a requirement for TDD.

1 1,534 (68.67%) Agile Software Development
2 1,044 (46.73%) C#
3 1,016 (45.48%) JavaScript
4 914 (40.91%) .NET
5 693 (31.02%) BDD
6 687 (30.75%) Java
7 624 (27.93%) Azure
8 598 (26.77%) SQL
9 549 (24.57%) DevOps
10 544 (24.35%) AngularJS
11 517 (23.14%) Scrum
12 515 (23.05%) Software Engineering
13 511 (22.87%) AWS
14 496 (22.20%) HTML
15 489 (21.89%) .NET Core
16 478 (21.40%) CSS
17 475 (21.26%) Microservices
18 474 (21.22%) Docker
19 463 (20.73%) Git (software)
20 443 (19.83%) Test Automation
21 390 (17.46%) React
22 386 (17.28%) MVC
23 370 (16.56%) SQL Server
24 369 (16.52%) Python
25 343 (15.35%) Continuous Integration
26 335 (15.00%) Kubernetes
27 333 (14.91%) ASP.NET
28 314 (14.06%) REST
29 291 (13.03%) OO
29 291 (13.03%) Spring

TDD
Co-occurring IT Skills in the UK excluding London 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 71 (3.18%) Elasticsearch
2 51 (2.28%) Confluence
3 45 (2.01%) nginx
4 44 (1.97%) CMS
5 27 (1.21%) NServiceBus
5 27 (1.21%) Tomcat
6 23 (1.03%) IIS
7 21 (0.94%) JBoss
8 16 (0.72%) WordPress
9 15 (0.67%) WebSphere
10 13 (0.58%) Apache
11 12 (0.54%) Mule
11 12 (0.54%) Mule ESB
11 12 (0.54%) OpenStack
11 12 (0.54%) Red Hat Fuse
12 8 (0.36%) BizTalk Server
13 7 (0.31%) Apache Spark
13 7 (0.31%) GlassFish
13 7 (0.31%) Oracle Workflow
13 7 (0.31%) Umbraco
Applications
1 13 (0.58%) Figma
2 6 (0.27%) Adobe Illustrator
3 4 (0.18%) Microsoft Excel
3 4 (0.18%) Microsoft Office
4 2 (0.090%) Chatbot
5 1 (0.045%) Adobe XD
5 1 (0.045%) MS Visio
5 1 (0.045%) Photoshop
Business Applications
1 14 (0.63%) Magento
2 11 (0.49%) Dynamics CRM
3 8 (0.36%) Shopify
4 7 (0.31%) IBM Operational Decision Manager
5 2 (0.090%) NetSuite
5 2 (0.090%) Payment Gateway
5 2 (0.090%) Salesforce.com CRM
6 1 (0.045%) nopCommerce
6 1 (0.045%) Odoo
Cloud Services
1 624 (27.93%) Azure
2 511 (22.87%) AWS
3 151 (6.76%) SaaS
4 148 (6.62%) GCP
5 125 (5.60%) Serverless
6 68 (3.04%) AWS Lambda
7 52 (2.33%) AWS CloudFormation
8 43 (1.92%) GitHub
9 39 (1.75%) Amazon EC2
10 29 (1.30%) Amazon ECS
10 29 (1.30%) Cloud Computing
11 28 (1.25%) PaaS
12 27 (1.21%) npm
13 20 (0.90%) Amazon EKS
14 19 (0.85%) OpenShift
15 14 (0.63%) IaaS
16 12 (0.54%) Amazon S3
17 11 (0.49%) Dynamics 365
18 9 (0.40%) Sauce Labs
19 8 (0.36%) Logic Apps
Communications & Networking
1 33 (1.48%) HTTP
2 24 (1.07%) Skype
3 16 (0.72%) TCP/IP
4 7 (0.31%) H.323
4 7 (0.31%) Network Security
5 6 (0.27%) Internet
6 5 (0.22%) Wireshark
7 4 (0.18%) DNS
8 3 (0.13%) Software-Defined Radio
8 3 (0.13%) Wi-Fi
9 2 (0.090%) Bluetooth
9 2 (0.090%) DHCP
9 2 (0.090%) IPv6
9 2 (0.090%) SSL
9 2 (0.090%) VLAN
9 2 (0.090%) Wireless
9 2 (0.090%) ZigBee
10 1 (0.045%) DSL
10 1 (0.045%) Ethernet
10 1 (0.045%) SSH
Database & Business Intelligence
1 370 (16.56%) SQL Server
2 257 (11.50%) NoSQL
3 171 (7.65%) MySQL
4 143 (6.40%) MongoDB
5 138 (6.18%) PostgreSQL
6 117 (5.24%) Relational Database
7 75 (3.36%) Redis
8 43 (1.92%) Big Data
9 31 (1.39%) Amazon DynamoDB
10 22 (0.98%) Cosmos DB
10 22 (0.98%) Data Warehouse
10 22 (0.98%) SQL Server Integration Services
11 21 (0.94%) SQL Server Reporting Services
12 15 (0.67%) SQL Server Analysis Services
13 14 (0.63%) Amazon RDS
13 14 (0.63%) SQL Server 2012
14 12 (0.54%) Apache Hive
14 12 (0.54%) Azure SQL Database
14 12 (0.54%) Hadoop
14 12 (0.54%) SQLite
Development Applications
1 463 (20.73%) Git (software)
2 231 (10.34%) Selenium
3 202 (9.04%) Jenkins
4 125 (5.60%) JIRA
5 86 (3.85%) Maven
6 78 (3.49%) JUnit
7 74 (3.31%) NUnit
8 61 (2.73%) SpecFlow
8 61 (2.73%) Visual Studio
9 56 (2.51%) Subversion
10 52 (2.33%) WebDriver
11 51 (2.28%) Cucumber
12 50 (2.24%) TeamCity
13 46 (2.06%) SoapUI
14 45 (2.01%) Mockito
15 43 (1.92%) Bitbucket
15 43 (1.92%) Team Foundation Server
16 42 (1.88%) Gradle
17 39 (1.75%) IntelliJ
18 37 (1.66%) Mercurial
General
1 257 (11.50%) Finance
2 104 (4.66%) Public Sector
3 66 (2.95%) Marketing
4 53 (2.37%) Games
5 47 (2.10%) Banking
6 43 (1.92%) Telecoms
7 40 (1.79%) Retail
8 27 (1.21%) Manufacturing
9 23 (1.03%) Electronics
10 17 (0.76%) Law
11 13 (0.58%) Automotive
12 11 (0.49%) Local Government
13 7 (0.31%) Back Office
13 7 (0.31%) Financial Institution
14 6 (0.27%) Pharmaceutical
15 4 (0.18%) Advertising
15 4 (0.18%) Billing
16 2 (0.090%) Housing Association
17 1 (0.045%) iGaming
Job Titles
1 1,480 (66.25%) Developer
2 413 (18.49%) .NET Developer
3 398 (17.82%) Senior Developer
4 343 (15.35%) Software Developer
5 332 (14.86%) Software Engineer
6 264 (11.82%) C# Developer
7 232 (10.38%) Java Developer
8 189 (8.46%) C# .NET Developer
9 179 (8.01%) Full Stack Developer
10 133 (5.95%) Front End Developer (Client-Side Developer)
11 119 (5.33%) .NET Software Developer
12 113 (5.06%) Senior .NET Developer
13 112 (5.01%) Lead Developer
14 97 (4.34%) Senior Software Engineer
15 87 (3.89%) Senior Software Developer
16 85 (3.80%) React Developer
17 77 (3.45%) Senior C# Developer
18 76 (3.40%) PHP Developer
18 76 (3.40%) Python Engineer
18 76 (3.40%) Test Engineer
Libraries, Frameworks & Software Standards
1 914 (40.91%) .NET
2 544 (24.35%) AngularJS
3 496 (22.20%) HTML
4 489 (21.89%) .NET Core
5 478 (21.40%) CSS
6 390 (17.46%) React
7 333 (14.91%) ASP.NET
8 314 (14.06%) REST
9 291 (13.03%) Spring
10 289 (12.94%) Node.js
11 273 (12.22%) .NET Framework
12 246 (11.01%) Vue.js
13 243 (10.88%) Web Services
14 223 (9.98%) RESTful
15 202 (9.04%) ASP.NET MVC
16 193 (8.64%) Entity Framework
17 154 (6.89%) Spring Boot
18 149 (6.67%) jQuery
19 148 (6.62%) HTML5
20 128 (5.73%) ASP.NET Web API
Miscellaneous
1 157 (7.03%) Greenfield Project
2 122 (5.46%) User Experience
3 95 (4.25%) Data Structures
4 92 (4.12%) Algorithms
5 80 (3.58%) Mobile App
6 57 (2.55%) Enterprise Software
7 55 (2.46%) Analytical Skills
8 34 (1.52%) LIMS
9 22 (0.98%) Renewable Energy
10 20 (0.90%) Cloud Native
11 18 (0.81%) Blog
11 18 (0.81%) iPhone
12 16 (0.72%) NHS
13 15 (0.67%) EPoS
13 15 (0.67%) Management Information System
13 15 (0.67%) Self-Motivation
14 12 (0.54%) Acoustics
14 12 (0.54%) Virtual Team
14 12 (0.54%) Xbox
15 11 (0.49%) N-Tier
Operating Systems
1 168 (7.52%) Linux
2 86 (3.85%) Android
3 75 (3.36%) Windows
4 64 (2.86%) Apple iOS
5 20 (0.90%) Unix
6 13 (0.58%) Windows Server
7 12 (0.54%) CentOS
7 12 (0.54%) Ubuntu
8 8 (0.36%) Mac OS
9 7 (0.31%) Embedded Linux
10 5 (0.22%) Red Hat Enterprise Linux
Processes & Methodologies
1 1,534 (68.67%) Agile Software Development
2 693 (31.02%) BDD
3 549 (24.57%) DevOps
4 517 (23.14%) Scrum
5 515 (23.05%) Software Engineering
6 475 (21.26%) Microservices
7 443 (19.83%) Test Automation
8 386 (17.28%) MVC
9 343 (15.35%) Continuous Integration
10 291 (13.03%) OO
11 282 (12.62%) Mentoring
12 257 (11.50%) SOLID
13 247 (11.06%) Unit Testing
14 192 (8.59%) Front End Development
15 174 (7.79%) SDLC
16 169 (7.56%) OOP
17 161 (7.21%) Problem-Solving
18 154 (6.89%) Computer Science
19 141 (6.31%) Coaching
20 140 (6.27%) Continuous Improvement
Programming Languages
1 1,044 (46.73%) C#
2 1,016 (45.48%) JavaScript
3 687 (30.75%) Java
4 598 (26.77%) SQL
5 369 (16.52%) Python
6 223 (9.98%) TypeScript
7 213 (9.53%) C++
8 171 (7.65%) PHP
9 133 (5.95%) Java 8
10 76 (3.40%) Go
11 67 (3.00%) C
12 65 (2.91%) Ruby
13 63 (2.82%) Scala
14 60 (2.69%) T-SQL
15 52 (2.33%) Kotlin
16 47 (2.10%) ES6
17 39 (1.75%) Objective-C
17 39 (1.75%) PowerShell
18 38 (1.70%) Apple Swift
19 29 (1.30%) VB
Qualifications
1 223 (9.98%) Degree
2 115 (5.15%) Security Cleared
3 84 (3.76%) SC Cleared
4 68 (3.04%) Computer Science Degree
5 51 (2.28%) ISTQB
6 30 (1.34%) ISEB
7 22 (0.98%) ISTQB Foundation Certification
8 20 (0.90%) PhD
9 14 (0.63%) DV Cleared
10 9 (0.40%) Numerate Degree
11 7 (0.31%) AWS Certification
12 6 (0.27%) ISTQB Advanced Certification
13 5 (0.22%) ISEB Practitioner
14 3 (0.13%) PMI Certification
15 2 (0.090%) Microsoft Certification
16 1 (0.045%) MCSA
16 1 (0.045%) MCSE
16 1 (0.045%) OCA
16 1 (0.045%) Oracle Certification
16 1 (0.045%) Sun Certification
Quality Assurance & Compliance
1 162 (7.25%) QA
2 8 (0.36%) ISO 9001
2 8 (0.36%) ISO/IEC 27001
3 7 (0.31%) GDPR
4 6 (0.27%) Data Quality
5 4 (0.18%) WCAG
6 2 (0.090%) NCSC
7 1 (0.045%) Disclosure Scotland
System Software
1 474 (21.22%) Docker
2 13 (0.58%) VMware Infrastructure
3 10 (0.45%) NDS
4 9 (0.40%) Active Directory
4 9 (0.40%) NetIQ eDirectory
5 7 (0.31%) Hyper-V
5 7 (0.31%) KVM
6 5 (0.22%) vSphere
Systems Management
1 335 (15.00%) Kubernetes
2 144 (6.45%) Terraform
3 86 (3.85%) Ansible
4 18 (0.81%) Opscode Chef
5 10 (0.45%) MIIS
6 9 (0.40%) NetIQ Identity Manager
7 7 (0.31%) Packer
7 7 (0.31%) Puppet
7 7 (0.31%) Single Sign-On
8 6 (0.27%) Grafana
8 6 (0.27%) Prometheus
8 6 (0.27%) Tivoli
9 5 (0.22%) Oracle Identity Manager
9 5 (0.22%) Tivoli Identity Manager
10 4 (0.18%) HP Quality Center
10 4 (0.18%) Kibana
11 2 (0.090%) HP Fortify
11 2 (0.090%) Nagios
11 2 (0.090%) vRealize
12 1 (0.045%) Cobbler
Vendors
1 207 (9.27%) Microsoft
2 59 (2.64%) Google
3 47 (2.10%) Atlassian
4 46 (2.06%) Oracle
5 27 (1.21%) SAP
6 21 (0.94%) IBM
7 18 (0.81%) Apple
8 17 (0.76%) Adobe
9 16 (0.72%) Pega
10 15 (0.67%) VMware
10 15 (0.67%) Zend
11 14 (0.63%) WSO2
12 12 (0.54%) Salesforce.com
12 12 (0.54%) Xamarin
13 11 (0.49%) ForgeRock
13 11 (0.49%) NetIQ
13 11 (0.49%) WooCommerce
14 10 (0.45%) Cadence
14 10 (0.45%) Red Hat
15 9 (0.40%) Solace