Period
to 23 April 2021

The following table provides summary statistics for permanent job vacancies advertised in England 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 23 April 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > England
6 months to
23 Apr 2021
Same period 2020 Same period 2019
Rank 32 25 26
Rank change year-on-year -7 +1 -7
Permanent jobs citing TDD 5,129 7,495 10,123
As % of all permanent jobs advertised in England 6.75% 7.53% 7.37%
As % of the Processes & Methodologies category 7.28% 8.15% 7.98%
Number of salaries quoted 4,199 6,316 8,463
10th Percentile £40,000 £36,250 £34,500
25th Percentile £47,500 £45,000 £41,250
Median annual salary (50th Percentile) £60,000 £60,000 £55,000
Median % change year-on-year - +9.09% +5.40%
75th Percentile £77,500 £76,250 £73,750
90th Percentile £90,450 £90,000 £87,500
UK median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +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 England with a requirement for process or methodology skills.

All Process and Methodology Skills
England
Permanent vacancies with a requirement for process or methodology skills 70,452 91,908 126,796
As % of all permanent IT jobs advertised in England 92.65% 92.30% 92.27%
Number of salaries quoted 54,640 74,416 101,523
10th Percentile £32,500 £31,250 £30,000
25th Percentile £42,000 £40,000 £37,750
Median annual salary (50th Percentile) £55,000 £55,000 £52,500
Median % change year-on-year - +4.76% +5.00%
75th Percentile £75,000 £73,750 £71,250
90th Percentile £91,250 £90,000 £86,250
UK median annual salary £55,000 £55,000 £52,500
% change year-on-year - +4.76% +5.00%

TDD
Job Vacancy Trend in England

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

Job vacancy trend for TDD in England

TDD
Salary Trend in England

3-month moving average salary quoted in jobs citing TDD in England.

Salary trend for TDD in England

TDD
Salary Histogram in England

Salary distribution for jobs citing TDD in England over the 6 months to 23 April 2021.

Salary histogram for TDD in England

TDD
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the England region over the 6 months to 23 April 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
London -5 2,638 £72,500 +3.57% 600
South East +6 879 £55,000 +6.80% 143
North of England -11 734 £52,500 +5.00% 245
North West -5 395 £52,750 +0.48% 160
South West -11 364 £50,000 +5.26% 80
Midlands -7 310 £52,500 +5.00% 92
Yorkshire -12 305 £52,500 +5.00% 57
West Midlands +1 219 £55,000 +10.00% 73
East of England -8 149 £65,000 +23.81% 68
East Midlands -27 86 £50,000 - 19
North East -33 34 £50,000 +11.11% 28
TDD
UK

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

1 3,503 (68.30%) Agile Software Development
2 2,274 (44.34%) JavaScript
3 1,864 (36.34%) C#
4 1,830 (35.68%) Java
5 1,749 (34.10%) BDD
6 1,667 (32.50%) .NET
7 1,603 (31.25%) AWS
8 1,530 (29.83%) DevOps
9 1,520 (29.64%) Microservices
10 1,465 (28.56%) Software Engineering
11 1,431 (27.90%) Azure
12 1,404 (27.37%) Docker
13 1,240 (24.18%) Scrum
14 1,214 (23.67%) React
15 1,208 (23.55%) SQL
16 1,037 (20.22%) AngularJS
17 1,035 (20.18%) Kubernetes
18 1,008 (19.65%) Test Automation
19 1,002 (19.54%) .NET Core
20 995 (19.40%) Python
21 965 (18.81%) Git (software)
22 945 (18.42%) CSS
23 909 (17.72%) HTML
23 909 (17.72%) Continuous Integration
24 846 (16.49%) Finance
25 794 (15.48%) Node.js
26 752 (14.66%) Spring
27 688 (13.41%) REST
28 670 (13.06%) MVC
29 656 (12.79%) SQL Server

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
1 229 (4.46%) Elasticsearch
2 130 (2.53%) Confluence
3 75 (1.46%) nginx
4 69 (1.35%) CMS
5 63 (1.23%) Apache Spark
6 51 (0.99%) Apache
7 48 (0.94%) IIS
8 40 (0.78%) Tomcat
9 26 (0.51%) WordPress
10 24 (0.47%) Cloud Foundry
10 24 (0.47%) NServiceBus
10 24 (0.47%) SharePoint
11 22 (0.43%) Umbraco
12 20 (0.39%) JBoss
13 19 (0.37%) Oracle Workflow
14 17 (0.33%) Mule
14 17 (0.33%) WebSphere
15 16 (0.31%) GemFire
15 16 (0.31%) Red Hat Fuse
16 15 (0.29%) OpenStack
Applications
1 35 (0.68%) Sketch
2 30 (0.58%) InVision
3 17 (0.33%) Chatbot
4 13 (0.25%) Figma
5 12 (0.23%) Adobe Illustrator
6 10 (0.19%) Microsoft Excel
7 9 (0.18%) Adobe Creative Suite
8 5 (0.097%) Microsoft Office
9 4 (0.078%) Simulink
9 4 (0.078%) Zeplin
10 3 (0.058%) Adobe XD
10 3 (0.058%) Photoshop
11 1 (0.019%) Microsoft Project
11 1 (0.019%) MS Visio
Business Applications
1 19 (0.37%) Dynamics CRM
2 7 (0.14%) Magento
3 5 (0.097%) Payment Gateway
3 5 (0.097%) Shopify
4 4 (0.078%) IBM Operational Decision Manager
5 3 (0.058%) Oracle BPM
6 2 (0.039%) NetSuite
6 2 (0.039%) SAP Business One
7 1 (0.019%) Dynamics AX
7 1 (0.019%) Infor M3
7 1 (0.019%) Oracle Retail
7 1 (0.019%) Summit
Cloud Services
1 1,603 (31.25%) AWS
2 1,431 (27.90%) Azure
3 479 (9.34%) GCP
4 423 (8.25%) Serverless
5 329 (6.41%) SaaS
6 190 (3.70%) AWS Lambda
7 177 (3.45%) GitHub
8 162 (3.16%) AWS CloudFormation
9 120 (2.34%) PaaS
10 118 (2.30%) Amazon EC2
11 94 (1.83%) Azure Service Bus
12 92 (1.79%) Azure Functions
13 74 (1.44%) Amazon SQS
14 71 (1.38%) Amazon S3
15 69 (1.35%) npm
16 62 (1.21%) Azure Cosmos DB
17 61 (1.19%) Amazon ECS
18 56 (1.09%) Power Platform
19 53 (1.03%) Azure Service Fabric
20 51 (0.99%) Cloud Computing
Communications & Networking
1 81 (1.58%) HTTP
2 34 (0.66%) Internet
3 32 (0.62%) Skype
4 22 (0.43%) Broadband
5 19 (0.37%) TCP/IP
6 12 (0.23%) Modbus
6 12 (0.23%) Network Security
6 12 (0.23%) RS-422
6 12 (0.23%) RS-485
7 10 (0.19%) Wi-Fi
8 8 (0.16%) Wireless
8 8 (0.16%) Wireshark
9 7 (0.14%) Bluetooth
9 7 (0.14%) H.323
10 6 (0.12%) Calico
10 6 (0.12%) DNS
10 6 (0.12%) SSH
11 5 (0.097%) Software-Defined Radio
11 5 (0.097%) ZigBee
12 4 (0.078%) MQTT
Database & Business Intelligence
1 656 (12.79%) SQL Server
2 524 (10.22%) NoSQL
3 389 (7.58%) PostgreSQL
4 340 (6.63%) MySQL
5 314 (6.12%) Relational Database
6 287 (5.60%) MongoDB
7 222 (4.33%) Redis
8 156 (3.04%) Big Data
9 122 (2.38%) Amazon DynamoDB
10 83 (1.62%) Amazon RDS
11 70 (1.36%) Hadoop
12 58 (1.13%) Azure SQL Database
13 54 (1.05%) Apache Cassandra
14 53 (1.03%) Data Warehouse
15 45 (0.88%) Power BI
16 39 (0.76%) Couchbase
17 38 (0.74%) Blockchain
17 38 (0.74%) SQL Server Reporting Services
18 36 (0.70%) SQL Server Integration Services
19 30 (0.58%) Hazelcast
Development Applications
1 965 (18.81%) Git (software)
2 495 (9.65%) Jenkins
3 492 (9.59%) Selenium
4 295 (5.75%) JIRA
5 255 (4.97%) Cucumber
6 250 (4.87%) GitLab
7 197 (3.84%) Cypress.io
8 189 (3.68%) Visual Studio
9 182 (3.55%) Maven
10 170 (3.31%) JUnit
11 169 (3.29%) TeamCity
12 142 (2.77%) webpack
13 133 (2.59%) Octopus Deploy
14 132 (2.57%) NUnit
15 123 (2.40%) SpecFlow
16 112 (2.18%) Gradle
17 86 (1.68%) WebDriver
18 81 (1.58%) JMeter
18 81 (1.58%) Postman
19 76 (1.48%) Appium
General
1 846 (16.49%) Finance
2 257 (5.01%) Banking
3 184 (3.59%) Games
4 181 (3.53%) Retail
5 163 (3.18%) Public Sector
6 135 (2.63%) Marketing
7 105 (2.05%) Front Office
8 75 (1.46%) Investment Banking
9 73 (1.42%) Electronics
10 69 (1.35%) Telecoms
11 60 (1.17%) Advertising
12 57 (1.11%) Publishing
13 46 (0.90%) Financial Institution
13 46 (0.90%) Law
14 39 (0.76%) Automotive
15 33 (0.64%) Manufacturing
16 29 (0.57%) Legal
17 26 (0.51%) Local Government
18 18 (0.35%) Back Office
19 17 (0.33%) Online Betting
Job Titles
1 3,012 (58.72%) Developer
2 860 (16.77%) Senior Developer
3 786 (15.32%) Software Engineer
4 687 (13.39%) Java Developer
5 682 (13.30%) .NET Developer
6 452 (8.81%) C# Developer
7 402 (7.84%) Software Developer
8 368 (7.17%) Full Stack Developer
9 312 (6.08%) C# .NET Developer
10 270 (5.26%) Front End Developer (Client-Side Developer)
11 269 (5.24%) Senior Software Engineer
12 265 (5.17%) React Developer
13 239 (4.66%) Java Engineer
14 202 (3.94%) Lead Developer
15 181 (3.53%) Senior Java Developer
16 163 (3.18%) Senior .NET Developer
17 155 (3.02%) JavaScript Developer
18 147 (2.87%) Senior Software Developer
19 138 (2.69%) Python Developer
20 133 (2.59%) Java Software Engineer
Libraries, Frameworks & Software Standards
1 1,667 (32.50%) .NET
2 1,214 (23.67%) React
3 1,037 (20.22%) AngularJS
4 1,002 (19.54%) .NET Core
5 945 (18.42%) CSS
6 909 (17.72%) HTML
7 794 (15.48%) Node.js
8 752 (14.66%) Spring
9 688 (13.41%) REST
10 637 (12.42%) RESTful
11 584 (11.39%) Web Services
12 521 (10.16%) .NET Framework
13 487 (9.50%) ASP.NET
14 448 (8.73%) Kafka
15 434 (8.46%) Spring Boot
16 422 (8.23%) Vue.js
17 362 (7.06%) HTML5
18 304 (5.93%) Redux
19 280 (5.46%) ASP.NET Web API
20 278 (5.42%) CSS3
Miscellaneous
1 383 (7.47%) Greenfield Project
2 328 (6.40%) User Experience
3 259 (5.05%) Mobile App
4 150 (2.92%) Self-Motivation
5 145 (2.83%) Algorithms
6 139 (2.71%) Analytical Skills
7 100 (1.95%) Data Structures
8 91 (1.77%) Cloud Native
9 67 (1.31%) Equities
10 56 (1.09%) Enterprise Software
11 54 (1.05%) iPad
12 53 (1.03%) NHS
13 52 (1.01%) Blog
13 52 (1.01%) Fixed Income
14 43 (0.84%) Derivative
14 43 (0.84%) Over-the-Top Content
15 42 (0.82%) Organisational Skills
16 38 (0.74%) Renewable Energy
16 38 (0.74%) Virtual Team
17 35 (0.68%) Online Games
Operating Systems
1 430 (8.38%) Linux
2 187 (3.65%) Android
3 157 (3.06%) Windows
4 141 (2.75%) Apple iOS
5 112 (2.18%) Unix
6 30 (0.58%) Windows Server
7 24 (0.47%) Embedded Linux
8 12 (0.23%) Ubuntu
9 11 (0.21%) Mac OS
10 8 (0.16%) CentOS
11 6 (0.12%) VMS
11 6 (0.12%) Windows Server 2008
12 5 (0.097%) Debian
13 4 (0.078%) FreeRTOS
14 2 (0.039%) Mac OS X
15 1 (0.019%) Red Hat Enterprise Linux
Processes & Methodologies
1 3,503 (68.30%) Agile Software Development
2 1,749 (34.10%) BDD
3 1,530 (29.83%) DevOps
4 1,520 (29.64%) Microservices
5 1,465 (28.56%) Software Engineering
6 1,240 (24.18%) Scrum
7 1,008 (19.65%) Test Automation
8 909 (17.72%) Continuous Integration
9 670 (13.06%) MVC
10 634 (12.36%) Mentoring
11 608 (11.85%) SOLID
12 575 (11.21%) OO
13 544 (10.61%) Unit Testing
14 505 (9.85%) Fintech
15 468 (9.12%) Pair Programming
16 452 (8.81%) Front End Development
17 441 (8.60%) Continuous Delivery
18 424 (8.27%) SDLC
19 374 (7.29%) OOP
20 360 (7.02%) Problem-Solving
Programming Languages
1 2,274 (44.34%) JavaScript
2 1,864 (36.34%) C#
3 1,830 (35.68%) Java
4 1,208 (23.55%) SQL
5 995 (19.40%) Python
6 602 (11.74%) TypeScript
7 354 (6.90%) Go
8 345 (6.73%) Java 8
9 303 (5.91%) Kotlin
10 290 (5.65%) C++
11 271 (5.28%) PHP
12 258 (5.03%) Scala
13 215 (4.19%) Ruby
14 155 (3.02%) ES6
15 128 (2.50%) T-SQL
16 97 (1.89%) C
17 66 (1.29%) Bash Shell
18 60 (1.17%) PowerShell
19 55 (1.07%) Groovy
20 48 (0.94%) Apple Swift
Qualifications
1 421 (8.21%) Degree
2 145 (2.83%) Computer Science Degree
3 126 (2.46%) Security Cleared
4 113 (2.20%) SC Cleared
5 68 (1.33%) ISTQB
6 47 (0.92%) ISEB
7 31 (0.60%) ISTQB Foundation Certification
8 24 (0.47%) PhD
9 21 (0.41%) SANS
10 18 (0.35%) AWS Certification
11 14 (0.27%) Microsoft Certification
12 13 (0.25%) Master's Degree
13 12 (0.23%) OCP
13 12 (0.23%) Oracle Certification
14 11 (0.21%) DV Cleared
15 8 (0.16%) OSCE
15 8 (0.16%) OSCP
16 7 (0.14%) Numerate Degree
17 6 (0.12%) DBS Check
18 5 (0.097%) ISEB Practitioner
Quality Assurance & Compliance
1 442 (8.62%) QA
2 46 (0.90%) GDPR
3 28 (0.55%) WCAG
4 26 (0.51%) ISO/IEC 27001
5 25 (0.49%) Data Quality
6 16 (0.31%) PCI DSS
7 13 (0.25%) SOC 2
8 12 (0.23%) PSD2
9 9 (0.18%) ISO 9001
10 8 (0.16%) NIST
10 8 (0.16%) SOC 1
11 6 (0.12%) SLA
12 4 (0.078%) Def Stans
12 4 (0.078%) EMIR
12 4 (0.078%) MiFID
12 4 (0.078%) MISRA
13 3 (0.058%) ISO 20022
14 1 (0.019%) SEPA
System Software
1 1,404 (27.37%) Docker
2 52 (1.01%) Active Directory
3 25 (0.49%) NDS
4 24 (0.47%) NetIQ eDirectory
5 23 (0.45%) VMware Infrastructure
6 18 (0.35%) Firmware
7 9 (0.18%) Postfix
8 8 (0.16%) HDFS
8 8 (0.16%) Hyper-V
8 8 (0.16%) KVM
9 7 (0.14%) Virtual Machines
10 6 (0.12%) vSphere
11 4 (0.078%) Apache ZooKeeper
11 4 (0.078%) Ceph
12 2 (0.039%) NFS
12 2 (0.039%) Platform Symphony
13 1 (0.019%) LXC
13 1 (0.019%) Xen
Systems Management
1 1,035 (20.18%) Kubernetes
2 405 (7.90%) Terraform
3 218 (4.25%) Ansible
4 71 (1.38%) Puppet
5 47 (0.92%) Opscode Chef
6 46 (0.90%) Prometheus
7 32 (0.62%) Grafana
8 28 (0.55%) Kibana
9 26 (0.51%) Istio
10 21 (0.41%) NetIQ Identity Manager
11 19 (0.37%) Fortio
11 19 (0.37%) Kiali
12 14 (0.27%) MIIS
13 9 (0.18%) linkerd
14 8 (0.16%) Consul
15 7 (0.14%) Packer
16 6 (0.12%) Nagios
16 6 (0.12%) Rancher
17 4 (0.078%) Icinga
17 4 (0.078%) Marathon
Vendors
1 379 (7.39%) Microsoft
2 197 (3.84%) Google
3 158 (3.08%) Oracle
4 50 (0.97%) Salesforce.com
5 41 (0.80%) Adobe
6 38 (0.74%) SAP
6 38 (0.74%) Xamarin
7 33 (0.64%) Atlassian
8 32 (0.62%) IBM
8 32 (0.62%) Splunk
9 27 (0.53%) ForgeRock
9 27 (0.53%) VMware
10 25 (0.49%) NetIQ
11 23 (0.45%) Databricks
12 22 (0.43%) Apple
13 20 (0.39%) Twitter
14 16 (0.31%) Okta
15 14 (0.27%) Cisco
15 14 (0.27%) New Relic
15 14 (0.27%) Sitecore