Period
to

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 2 July 2022 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK
6 months to
2 Jul 2022
Same period 2021 Same period 2020
Rank 43 36 29
Rank change year-on-year -7 -7 +5
Permanent jobs citing TDD 12,898 7,391 5,873
As % of all permanent jobs advertised in the UK 7.17% 6.86% 7.43%
As % of the Processes & Methodologies category 7.52% 7.31% 8.00%
Number of salaries quoted 4,301 4,724 5,037
10th Percentile £43,500 £40,000 £37,500
25th Percentile £52,500 £47,500 £45,000
Median annual salary (50th Percentile) £66,250 £60,000 £60,000
Median % change year-on-year +10.42% - +9.09%
75th Percentile £85,000 £78,750 £77,000
90th Percentile £100,000 £90,000 £92,500
UK excluding London median annual salary £57,500 £54,653 £50,000
% change year-on-year +5.21% +9.31% -

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 171,418 101,060 73,427
As % of all permanent IT jobs advertised in the UK 95.33% 93.84% 92.91%
Number of salaries quoted 84,618 69,994 59,268
10th Percentile £33,750 £32,500 £31,750
25th Percentile £44,900 £41,750 £41,250
Median annual salary (50th Percentile) £60,000 £55,000 £55,000
Median % change year-on-year +9.09% - +4.76%
75th Percentile £80,000 £75,000 £73,750
90th Percentile £96,250 £92,250 £90,000
UK excluding London median annual salary £52,500 £49,800 £47,500
% change year-on-year +5.42% +4.84% +5.56%

TDD
Job Vacancy Trend

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

Job vacancy trend for TDD in the UK

TDD
Salary Trend

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

Salary trend for TDD in the UK

TDD
Salary Histogram

Salary distribution for jobs citing TDD over the 6 months to 2 July 2022.

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 2 July 2022. 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
Jobs
England -6 10,856 £67,500 +12.50% 793
London -3 7,302 £80,000 +6.67% 427
Work from Home -8 5,818 £65,000 +8.33% 426
UK excluding London -16 3,787 £57,500 +5.21% 409
North of England -7 1,142 £57,500 +4.55% 143
South East -23 1,120 £60,000 +9.09% 86
North West -6 704 £60,000 +9.44% 80
Midlands -26 435 £57,250 +9.05% 52
South West -10 433 £61,040 +16.27% 52
Yorkshire -12 402 £55,000 - 49
West Midlands -28 304 £60,000 +9.09% 36
East of England -23 298 £60,000 - 21
Scotland -27 283 £60,000 +20.00% 40
East Midlands -29 117 £52,500 +5.00% 16
Wales -17 89 £60,000 +49.51% 11
North East -12 36 £55,750 +3.72% 14
Northern Ireland -55 24 £46,000 +3.37% 4

For the 6 months to 2 July 2022, 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 9,613 (74.53%) Agile
2 5,647 (43.78%) Java
3 5,591 (43.35%) Software Engineering
4 5,261 (40.79%) CI/CD
5 5,223 (40.49%) JavaScript
6 5,128 (39.76%) AWS
7 4,598 (35.65%) BDD
8 4,190 (32.49%) Microservices
9 4,088 (31.69%) React
10 3,831 (29.70%) DevOps
11 3,820 (29.62%) Docker
12 3,679 (28.52%) Git (software)
13 3,497 (27.11%) Finance
14 3,472 (26.92%) Kubernetes
15 3,470 (26.90%) Python
16 3,380 (26.21%) Azure
17 3,377 (26.18%) Test Automation
18 3,320 (25.74%) Scrum
19 3,271 (25.36%) SQL
20 3,062 (23.74%) Continuous Integration
21 2,981 (23.11%) C#
22 2,916 (22.61%) Full Stack Development
23 2,861 (22.18%) .NET
24 2,669 (20.69%) Node.js
25 2,664 (20.65%) Mentoring
26 2,618 (20.30%) Social Skills
27 2,481 (19.24%) CSS
28 2,479 (19.22%) HTML
29 2,325 (18.03%) TypeScript
30 2,118 (16.42%) Serverless

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
1 370 (2.87%) Apache Spark
2 325 (2.52%) Confluence
3 276 (2.14%) Apache
4 271 (2.10%) CMS
5 117 (0.91%) Cloud Foundry
6 96 (0.74%) nginx
7 94 (0.73%) Apache Airflow
8 71 (0.55%) IIS
8 71 (0.55%) WordPress
9 63 (0.49%) Headless CMS
10 42 (0.33%) Jetty
11 39 (0.30%) SharePoint
12 36 (0.28%) Drupal
13 35 (0.27%) WebSphere
14 34 (0.26%) IBM Domino
14 34 (0.26%) JBoss
15 32 (0.25%) Ethereum
16 28 (0.22%) Apache Solr
16 28 (0.22%) Camunda
17 25 (0.19%) Sitecore CMS
Applications
1 76 (0.59%) Microsoft Excel
2 40 (0.31%) Microsoft Office
3 34 (0.26%) Photoshop
4 20 (0.16%) Microsoft PowerPoint
5 19 (0.15%) Sketch
6 15 (0.12%) Chatbot
7 14 (0.11%) Adobe XD
7 14 (0.11%) MS Visio
8 13 (0.10%) InVision
8 13 (0.10%) Maple
8 13 (0.10%) Spreadsheet
9 8 (0.062%) Maya
10 7 (0.054%) Microsoft Project
11 6 (0.047%) Adobe Illustrator
12 5 (0.039%) NUKE
13 3 (0.023%) Blender
14 2 (0.016%) Simulink
15 1 (0.008%) UXPin
Business Applications
1 47 (0.36%) Oracle BPM
2 34 (0.26%) Dynamics CRM
3 20 (0.16%) Payment Gateway
4 19 (0.15%) Academy Housing
5 18 (0.14%) Magento
6 14 (0.11%) SAP Hybris
7 13 (0.10%) Ripple
7 13 (0.10%) Ripple XRP
8 9 (0.070%) Distributed Ledger
8 9 (0.070%) Shopify
9 8 (0.062%) Academy Revenues and Benefits
9 8 (0.062%) Oracle ERP
9 8 (0.062%) ProductWriter
10 7 (0.054%) Summit
11 5 (0.039%) MetaTrader
12 4 (0.031%) R3 Corda
13 2 (0.016%) Dynamics AX
13 2 (0.016%) Oracle Financials
14 1 (0.008%) NetSuite
14 1 (0.008%) SAP S/4HANA
Cloud Services
1 5,128 (39.76%) AWS
2 3,380 (26.21%) Azure
3 2,118 (16.42%) Serverless
4 2,039 (15.81%) GCP
5 1,208 (9.37%) AWS Lambda
6 1,033 (8.01%) GitHub
7 760 (5.89%) SaaS
8 580 (4.50%) Azure DevOps
9 539 (4.18%) Amazon S3
10 391 (3.03%) Cloud Computing
11 355 (2.75%) OpenShift
12 350 (2.71%) AWS CloudFormation
13 335 (2.60%) Amazon ECS
14 291 (2.26%) Amazon EC2
15 282 (2.19%) PaaS
16 269 (2.09%) Amazon SQS
17 252 (1.95%) npm
18 211 (1.64%) Cloud Functions
19 197 (1.53%) Amazon CloudWatch
20 187 (1.45%) Amazon Kinesis
Communications & Networking
1 395 (3.06%) Internet
2 310 (2.40%) HTTP
3 293 (2.27%) Broadband
4 105 (0.81%) PPP
5 87 (0.67%) TCP/IP
6 59 (0.46%) VoIP
7 43 (0.33%) MQTT
7 43 (0.33%) WebEx
8 36 (0.28%) DNS
9 32 (0.25%) HTTPS
10 31 (0.24%) Wireless
11 28 (0.22%) NFC
12 21 (0.16%) AMQP
12 21 (0.16%) Modbus
12 21 (0.16%) RS-422
12 21 (0.16%) RS-485
13 20 (0.16%) Network Security
14 19 (0.15%) SSL
15 16 (0.12%) Wi-Fi
16 14 (0.11%) 5G
Database & Business Intelligence
1 1,519 (11.78%) MySQL
2 1,496 (11.60%) NoSQL
3 1,417 (10.99%) PostgreSQL
4 1,084 (8.40%) SQL Server
5 985 (7.64%) MongoDB
6 979 (7.59%) Relational Database
7 670 (5.19%) Redis
8 615 (4.77%) Elasticsearch
9 614 (4.76%) Big Data
10 374 (2.90%) DynamoDB
11 314 (2.43%) Apache Cassandra
12 269 (2.09%) Amazon RDS
13 260 (2.02%) RDBMS
14 225 (1.74%) Flink
15 192 (1.49%) Data Warehouse
16 190 (1.47%) Amazon Aurora
16 190 (1.47%) Hadoop
17 181 (1.40%) Amazon Athena
18 160 (1.24%) Data Lake
19 144 (1.12%) BigQuery
Development Applications
1 3,679 (28.52%) Git (software)
2 1,993 (15.45%) Jenkins
3 1,229 (9.53%) JIRA
4 879 (6.82%) Selenium
5 756 (5.86%) Maven
6 718 (5.57%) Cucumber
7 667 (5.17%) JUnit
8 645 (5.00%) Gradle
9 597 (4.63%) GitLab
10 527 (4.09%) Cypress.io
11 436 (3.38%) webpack
12 353 (2.74%) TeamCity
13 350 (2.71%) Mockito
14 348 (2.70%) Bitbucket
15 343 (2.66%) Subversion
16 342 (2.65%) Jasmine
17 302 (2.34%) Octopus Deploy
18 299 (2.32%) SonarQube
19 285 (2.21%) Postman
20 260 (2.02%) Ant
General
1 3,497 (27.11%) Finance
2 2,618 (20.30%) Social Skills
3 1,225 (9.50%) Banking
4 1,041 (8.07%) Inclusion and Diversity
5 806 (6.25%) Analytical Skills
6 792 (6.14%) Games
7 649 (5.03%) Retail
8 582 (4.51%) Marketing
9 562 (4.36%) Manufacturing
10 505 (3.92%) Public Sector
11 391 (3.03%) Legal
12 272 (2.11%) Advertising
13 260 (2.02%) Law
14 248 (1.92%) Financial Institution
15 219 (1.70%) Organisational Skills
16 196 (1.52%) Automotive
17 140 (1.09%) Front Office
18 138 (1.07%) Telecoms
19 132 (1.02%) Publishing
20 129 (1.00%) Back Office
Job Titles
1 5,677 (44.01%) Developer
2 3,140 (24.34%) Software Engineer
3 1,834 (14.22%) Senior Developer
4 1,336 (10.36%) Java Developer
5 1,237 (9.59%) Senior Software Engineer
6 881 (6.83%) Software Developer
7 840 (6.51%) Java Engineer
8 756 (5.86%) Full Stack Developer
9 604 (4.68%) .NET Developer
10 538 (4.17%) Front End Developer (Client-Side Developer)
11 473 (3.67%) Senior Java Developer
12 456 (3.54%) Lead Developer
13 448 (3.47%) C# Developer
14 442 (3.43%) Senior Java Engineer
15 345 (2.67%) Technical Leader
16 339 (2.63%) Backend Developer
17 326 (2.53%) React Developer
18 322 (2.50%) Java Software Engineer
19 286 (2.22%) Python Developer
20 269 (2.09%) Senior Software Developer
Libraries, Frameworks & Software Standards
1 4,088 (31.69%) React
2 2,861 (22.18%) .NET
3 2,669 (20.69%) Node.js
4 2,481 (19.24%) CSS
5 2,479 (19.22%) HTML
6 2,018 (15.65%) AngularJS
7 2,011 (15.59%) Spring
8 1,859 (14.41%) REST
9 1,843 (14.29%) RESTful
10 1,454 (11.27%) Kafka
11 1,390 (10.78%) Spring Boot
12 1,196 (9.27%) .NET Core
13 1,102 (8.54%) HTML5
14 1,097 (8.51%) Vue.js
15 952 (7.38%) ASP.NET
16 949 (7.36%) Web Services
17 910 (7.06%) GraphQL
18 803 (6.23%) CSS3
19 717 (5.56%) .NET Framework
20 713 (5.53%) Jest
Miscellaneous
1 1,094 (8.48%) Algorithms
2 1,066 (8.26%) User Experience
3 1,015 (7.87%) Data Structures
4 896 (6.95%) Cloud Native
5 632 (4.90%) Greenfield Project
6 598 (4.64%) Self-Motivation
7 594 (4.61%) Mobile App
8 500 (3.88%) Public Cloud
9 478 (3.71%) Life Science
10 391 (3.03%) Enterprise Software
11 379 (2.94%) Virtual Team
12 304 (2.36%) Blog
13 266 (2.06%) Social Media
14 232 (1.80%) Linux Command Line
15 198 (1.54%) Social Network
16 196 (1.52%) Video\Live Streaming
17 192 (1.49%) Blockchain
18 182 (1.41%) Hackathon
19 167 (1.29%) Foreign Exchange (FX)
20 147 (1.14%) Legacy Code
Operating Systems
1 1,374 (10.65%) Linux
2 713 (5.53%) Unix
3 683 (5.30%) Android
4 554 (4.30%) Apple iOS
5 523 (4.05%) Windows
6 114 (0.88%) Ubuntu
7 78 (0.60%) VMS
8 73 (0.57%) Mesosphere
9 68 (0.53%) Mac OS X
10 36 (0.28%) CentOS
11 29 (0.22%) Windows Server
12 24 (0.19%) Mac OS
13 11 (0.085%) Embedded Linux
14 9 (0.070%) Debian
14 9 (0.070%) Red Hat Enterprise Linux
15 7 (0.054%) Tizen
15 7 (0.054%) webOS
15 7 (0.054%) Windows Embedded Compact
16 2 (0.016%) Android TV
16 2 (0.016%) Angstrom
Processes & Methodologies
1 9,613 (74.53%) Agile
2 5,591 (43.35%) Software Engineering
3 5,261 (40.79%) CI/CD
4 4,598 (35.65%) BDD
5 4,190 (32.49%) Microservices
6 3,831 (29.70%) DevOps
7 3,377 (26.18%) Test Automation
8 3,320 (25.74%) Scrum
9 3,062 (23.74%) Continuous Integration
10 2,916 (22.61%) Full Stack Development
11 2,664 (20.65%) Mentoring
12 2,021 (15.67%) Pair Programming
13 1,787 (13.85%) Coaching
14 1,702 (13.20%) Problem-Solving
15 1,648 (12.78%) OO
16 1,591 (12.34%) Unit Testing
17 1,469 (11.39%) Kanban
18 1,400 (10.85%) Continuous Delivery
19 1,348 (10.45%) Computer Science
20 1,338 (10.37%) SDLC
Programming Languages
1 5,647 (43.78%) Java
2 5,223 (40.49%) JavaScript
3 3,470 (26.90%) Python
4 3,271 (25.36%) SQL
5 2,981 (23.11%) C#
6 2,325 (18.03%) TypeScript
7 952 (7.38%) PHP
8 951 (7.37%) Ruby
9 819 (6.35%) Go
10 769 (5.96%) Kotlin
11 768 (5.95%) C++
12 655 (5.08%) C
13 626 (4.85%) Scala
14 495 (3.84%) ES6
15 455 (3.53%) PowerShell
16 376 (2.92%) Shell Script
17 331 (2.57%) Objective-C
18 295 (2.29%) Perl
19 293 (2.27%) T-SQL
20 208 (1.61%) Bash
Qualifications
1 1,698 (13.16%) Degree
2 930 (7.21%) Computer Science Degree
3 261 (2.02%) Security Cleared
4 193 (1.50%) SC Cleared
5 138 (1.07%) PMI Certification
6 104 (0.81%) Microsoft Certification
7 94 (0.73%) ISTQB
8 93 (0.72%) Master's Degree
9 66 (0.51%) ISEB
10 56 (0.43%) Numerate Degree
11 38 (0.29%) PhD
12 35 (0.27%) AWS Certification
13 28 (0.22%) ISTQB Foundation Certification
14 23 (0.18%) BPSS Clearance
15 22 (0.17%) ISEB Practitioner
16 18 (0.14%) Postgraduate
17 15 (0.12%) IIBA
18 11 (0.085%) HND
18 11 (0.085%) MCAD
18 11 (0.085%) MCSA
Quality Assurance & Compliance
1 1,442 (11.18%) QA
2 638 (4.95%) Accessibility
3 79 (0.61%) SLA
4 69 (0.53%) GDPR
5 42 (0.33%) Data Quality
6 25 (0.19%) HL7
7 24 (0.19%) WCAG
8 22 (0.17%) EMIR
8 22 (0.17%) MiFID
9 21 (0.16%) ISO/IEC 27001
10 20 (0.16%) ISO 9001
11 15 (0.12%) PCI DSS
11 15 (0.12%) WAI
12 12 (0.093%) Cyber Essentials
12 12 (0.093%) Cyber Essentials PLUS
13 7 (0.054%) PMO
14 4 (0.031%) ISO 13485
14 4 (0.031%) NCSC
15 3 (0.023%) FATCA
15 3 (0.023%) SNOMED CT
System Software
1 3,820 (29.62%) Docker
2 60 (0.47%) Apache ZooKeeper
3 53 (0.41%) VMware Infrastructure
4 46 (0.36%) Active Directory
5 36 (0.28%) Virtual Machines
6 24 (0.19%) Firmware
7 19 (0.15%) KVM
8 17 (0.13%) Xen
9 12 (0.093%) LXC
10 3 (0.023%) Oracle RAC
10 3 (0.023%) Postfix
11 2 (0.016%) Hyper-V
12 1 (0.008%) Ceph
12 1 (0.008%) HDFS
12 1 (0.008%) NFS
12 1 (0.008%) zsh
Systems Management
1 3,472 (26.92%) Kubernetes
2 1,510 (11.71%) Terraform
3 419 (3.25%) Ansible
4 268 (2.08%) Puppet
5 257 (1.99%) Opscode Chef
6 246 (1.91%) Grafana
7 239 (1.85%) Prometheus
8 135 (1.05%) Kibana
9 123 (0.95%) logstash
10 111 (0.86%) Istio
11 73 (0.57%) Automic
12 62 (0.48%) Single Sign-On
13 61 (0.47%) Consul
14 58 (0.45%) Rancher
15 47 (0.36%) Fortio
15 47 (0.36%) Kiali
15 47 (0.36%) ZABBIX
16 37 (0.29%) MIIS
17 33 (0.26%) Opsgenie
18 28 (0.22%) Pingdom
Vendors
1 1,242 (9.63%) Google
2 1,131 (8.77%) Microsoft
3 304 (2.36%) Oracle
4 209 (1.62%) Twitter
5 172 (1.33%) Splunk
6 148 (1.15%) Spotify
7 123 (0.95%) LexisNexis
8 116 (0.90%) Apple
9 101 (0.78%) Sun
10 97 (0.75%) Zend
11 83 (0.64%) TrueLayer
12 81 (0.63%) MuleSoft
13 78 (0.60%) Confluent
14 71 (0.55%) Atlassian
15 70 (0.54%) Funding Circle
16 68 (0.53%) Databricks
17 64 (0.50%) FIS
18 61 (0.47%) VMware
18 61 (0.47%) Zopa
19 60 (0.47%) Revolut