Period
to 24 January 2021

The following table provides summary statistics for permanent job vacancies advertised in 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 24 January 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
England > London
6 months to
24 Jan 2021
Same period 2020 Same period 2019
Rank 21 20 25
Rank change year-on-year -1 +5 -7
Permanent jobs citing TDD 2,232 4,587 5,502
As % of all permanent jobs advertised in London 9.27% 8.96% 8.72%
As % of the Processes & Methodologies category 9.91% 9.59% 9.41%
Number of salaries quoted 2,193 4,159 4,972
Median annual salary £70,000 £67,500 £65,000
Median salary % change year-on-year +3.70% +3.85% +8.33%
10th Percentile £48,750 £42,500 £37,500
90th Percentile £98,750 £95,000 £95,000
England median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +7.84%

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 London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Permanent vacancies with a requirement for process or methodology skills 22,523 47,817 58,469
As % of all permanent IT jobs advertised in London 93.57% 93.43% 92.70%
Number of salaries quoted 18,818 38,777 47,814
Median annual salary £70,000 £65,000 £62,500
Median salary % change year-on-year +7.69% +4.00% +4.17%
10th Percentile £42,500 £36,475 £35,000
90th Percentile £105,000 £100,000 £95,000
England median annual salary £55,000 £55,000 £52,500
% change year-on-year - +4.76% +5.00%

TDD
Job Vacancy Trend in London

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

Job vacancy trend for TDD in London

TDD
Salary Trend in London

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

Salary trend for TDD in London

TDD
Salary Histogram in London

Salary distribution for jobs citing TDD in London over the 6 months to 24 January 2021.

Salary histogram for TDD in London

TDD
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the London region over the 6 months to 24 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
Central London +4 531 £70,000 - 171
South London +27 113 £62,500 -3.85% 5
West London -27 33 £62,500 - 58
East London +28 18 £54,000 -13.60% 33
North London +25 2 £52,500 -8.70% 5
TDD
England

For the 6 months to 24 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 London region with a requirement for TDD.

1 1,497 (67.07%) Agile Software Development
2 967 (43.32%) JavaScript
3 891 (39.92%) Java
4 814 (36.47%) BDD
5 768 (34.41%) Microservices
6 700 (31.36%) AWS
7 672 (30.11%) Docker
8 668 (29.93%) DevOps
9 610 (27.33%) .NET
10 600 (26.88%) Software Engineering
11 554 (24.82%) Python
12 546 (24.46%) C#
13 508 (22.76%) React
14 503 (22.54%) SQL
15 469 (21.01%) Scrum
15 469 (21.01%) Azure
16 458 (20.52%) Finance
17 441 (19.76%) Node.js
18 416 (18.64%) Test Automation
19 411 (18.41%) Kubernetes
20 389 (17.43%) AngularJS
21 383 (17.16%) Continuous Integration
22 371 (16.62%) .NET Core
23 331 (14.83%) Kafka
24 322 (14.43%) CSS
25 321 (14.38%) Spring
26 316 (14.16%) Git (software)
27 308 (13.80%) HTML
28 289 (12.95%) MVC
29 280 (12.54%) OO

TDD
Co-occurring IT Skills in 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 87 (3.90%) Elasticsearch
2 56 (2.51%) Confluence
3 36 (1.61%) Apache Spark
4 28 (1.25%) IIS
5 18 (0.81%) SharePoint
6 17 (0.76%) CMS
7 16 (0.72%) Apache
8 11 (0.49%) Umbraco
8 11 (0.49%) WebSphere
9 8 (0.36%) WordPress
10 6 (0.27%) nginx
10 6 (0.27%) Sitecore CMS
10 6 (0.27%) Tornado
11 5 (0.22%) Drupal
11 5 (0.22%) Moodle
11 5 (0.22%) OpenStack
12 4 (0.18%) Tomcat
13 3 (0.13%) Adobe Experience Manager
13 3 (0.13%) Apache Airflow
13 3 (0.13%) JBoss
Applications
1 19 (0.85%) InVision
1 19 (0.85%) Sketch
2 11 (0.49%) Adobe Creative Suite
3 6 (0.27%) Chatbot
4 4 (0.18%) Microsoft Excel
4 4 (0.18%) Spreadsheet
5 2 (0.090%) Microsoft Office
6 1 (0.045%) Adobe Illustrator
6 1 (0.045%) Figma
6 1 (0.045%) Microsoft Project
6 1 (0.045%) Photoshop
Business Applications
1 10 (0.45%) Dynamics CRM
2 6 (0.27%) Payment Gateway
3 1 (0.045%) Distributed Ledger
3 1 (0.045%) Magento
3 1 (0.045%) Sentinel
3 1 (0.045%) Shopify
Cloud Services
1 700 (31.36%) AWS
2 469 (21.01%) Azure
3 176 (7.89%) GCP
4 154 (6.90%) Serverless
5 80 (3.58%) SaaS
6 72 (3.23%) AWS Lambda
7 69 (3.09%) GitHub
8 49 (2.20%) PaaS
9 45 (2.02%) AWS CloudFormation
10 44 (1.97%) npm
11 40 (1.79%) Azure Functions
12 37 (1.66%) Amazon EC2
13 35 (1.57%) Azure Data Factory
14 29 (1.30%) Amazon SQS
15 23 (1.03%) Cloud Computing
15 23 (1.03%) Logic Apps
16 20 (0.90%) Amazon S3
16 20 (0.90%) Azure Active Directory
17 19 (0.85%) BrowserStack
18 17 (0.76%) Slack
Communications & Networking
1 25 (1.12%) Internet
2 17 (0.76%) HTTP
3 10 (0.45%) Skype
4 3 (0.13%) Network Security
4 3 (0.13%) SNMP
4 3 (0.13%) VPN
5 2 (0.090%) SSH
6 1 (0.045%) ADSL
6 1 (0.045%) HTTPS
6 1 (0.045%) Intranet
6 1 (0.045%) RS-485
6 1 (0.045%) TCP/IP
6 1 (0.045%) VDSL
6 1 (0.045%) VoIP
6 1 (0.045%) X.509
Database & Business Intelligence
1 251 (11.25%) SQL Server
2 249 (11.16%) NoSQL
3 150 (6.72%) MongoDB
4 143 (6.41%) MySQL
5 142 (6.36%) PostgreSQL
6 121 (5.42%) Relational Database
7 106 (4.75%) Redis
8 72 (3.23%) Big Data
9 38 (1.70%) Apache Cassandra
10 37 (1.66%) Amazon DynamoDB
11 34 (1.52%) Amazon RDS
12 33 (1.48%) Blockchain
12 33 (1.48%) Data Warehouse
13 32 (1.43%) Cosmos DB
13 32 (1.43%) Hadoop
14 29 (1.30%) Hazelcast
14 29 (1.30%) SQL Server 2019
15 21 (0.94%) Couchbase
16 19 (0.85%) Azure SQL Database
17 18 (0.81%) Riak
Development Applications
1 316 (14.16%) Git (software)
2 221 (9.90%) Selenium
3 211 (9.45%) Jenkins
4 139 (6.23%) GitLab
5 121 (5.42%) JIRA
6 120 (5.38%) Cucumber
7 115 (5.15%) TeamCity
8 102 (4.57%) Cypress.io
9 92 (4.12%) webpack
10 88 (3.94%) Octopus Deploy
11 72 (3.23%) JUnit
12 55 (2.46%) Visual Studio
13 53 (2.37%) Appium
13 53 (2.37%) Grunt
14 52 (2.33%) NUnit
15 49 (2.20%) Jasmine
16 47 (2.11%) Maven
17 45 (2.02%) WebDriver
18 40 (1.79%) SpecFlow
19 38 (1.70%) Storybook
General
1 458 (20.52%) Finance
2 119 (5.33%) Banking
3 81 (3.63%) Front Office
4 79 (3.54%) Games
5 71 (3.18%) Retail
6 40 (1.79%) Advertising
7 36 (1.61%) Investment Banking
8 34 (1.52%) Marketing
9 26 (1.16%) Public Sector
9 26 (1.16%) Publishing
10 23 (1.03%) Law
11 18 (0.81%) Online Betting
12 13 (0.58%) Financial Institution
12 13 (0.58%) Manufacturing
13 11 (0.49%) Electronics
14 8 (0.36%) Telecoms
15 7 (0.31%) Automotive
15 7 (0.31%) Back Office
15 7 (0.31%) Housing Association
16 4 (0.18%) Retail Banking
Job Titles
1 1,294 (57.97%) Developer
2 354 (15.86%) Java Developer
3 312 (13.98%) Senior Developer
4 270 (12.10%) .NET Developer
5 265 (11.87%) Software Engineer
6 193 (8.65%) C# Developer
7 173 (7.75%) Full Stack Developer
8 137 (6.14%) C# .NET Developer
9 118 (5.29%) DevOps Engineer
10 110 (4.93%) Java Engineer
11 102 (4.57%) AWS Engineer
11 102 (4.57%) Senior Java Developer
12 101 (4.53%) React Developer
13 95 (4.26%) Senior Software Engineer
14 85 (3.81%) JavaScript Developer
15 84 (3.76%) Front End Developer (Client-Side Developer)
16 83 (3.72%) Backend Developer
17 82 (3.67%) Python Engineer
18 79 (3.54%) Angular Developer
19 69 (3.09%) Python Developer
Libraries, Frameworks & Software Standards
1 610 (27.33%) .NET
2 508 (22.76%) React
3 441 (19.76%) Node.js
4 389 (17.43%) AngularJS
5 371 (16.62%) .NET Core
6 331 (14.83%) Kafka
7 322 (14.43%) CSS
8 321 (14.38%) Spring
9 308 (13.80%) HTML
10 269 (12.05%) REST
11 254 (11.38%) RESTful
12 213 (9.54%) Web Services
13 207 (9.27%) .NET Framework
14 188 (8.42%) Spring Boot
15 166 (7.44%) ASP.NET
16 154 (6.90%) HTML5
17 152 (6.81%) Redux
18 145 (6.50%) CSS3
19 142 (6.36%) ASP.NET Web API
19 142 (6.36%) Vue.js
Miscellaneous
1 207 (9.27%) Greenfield Project
2 127 (5.69%) Mobile App
3 118 (5.29%) User Experience
4 97 (4.35%) Algorithms
5 66 (2.96%) Analytical Skills
6 65 (2.91%) Self-Motivation
7 60 (2.69%) Equities
8 58 (2.60%) Cloud Native
9 51 (2.28%) Fixed Income
10 42 (1.88%) Data Structures
11 30 (1.34%) Media Streaming
12 27 (1.21%) Foreign Exchange (FX)
13 26 (1.16%) Derivative
14 24 (1.08%) Over-the-Top Content
14 24 (1.08%) Virtual Team
15 23 (1.03%) Online Games
15 23 (1.03%) Social Network
16 20 (0.90%) Bitcoin
17 18 (0.81%) Mobile Games
18 17 (0.76%) Hedge funds
Operating Systems
1 216 (9.68%) Linux
2 70 (3.14%) Android
2 70 (3.14%) Windows
3 67 (3.00%) Apple iOS
4 41 (1.84%) Unix
5 11 (0.49%) VMS
6 6 (0.27%) Windows Server
6 6 (0.27%) Windows Server 2008
7 1 (0.045%) AIX
7 1 (0.045%) CentOS
7 1 (0.045%) Debian
7 1 (0.045%) tvOS
Processes & Methodologies
1 1,497 (67.07%) Agile Software Development
2 814 (36.47%) BDD
3 768 (34.41%) Microservices
4 668 (29.93%) DevOps
5 600 (26.88%) Software Engineering
6 469 (21.01%) Scrum
7 416 (18.64%) Test Automation
8 383 (17.16%) Continuous Integration
9 289 (12.95%) MVC
10 280 (12.54%) OO
11 272 (12.19%) Pair Programming
12 264 (11.83%) Fintech
13 216 (9.68%) Unit Testing
14 205 (9.18%) Continuous Delivery
15 202 (9.05%) SOLID
16 190 (8.51%) Mentoring
17 182 (8.15%) Problem-Solving
18 171 (7.66%) SDLC
19 165 (7.39%) Front End Development
20 149 (6.68%) Open Source
Programming Languages
1 967 (43.32%) JavaScript
2 891 (39.92%) Java
3 554 (24.82%) Python
4 546 (24.46%) C#
5 503 (22.54%) SQL
6 200 (8.96%) Go
7 189 (8.47%) Java 8
7 189 (8.47%) TypeScript
8 166 (7.44%) Scala
9 160 (7.17%) Kotlin
10 108 (4.84%) Ruby
11 104 (4.66%) PHP
12 62 (2.78%) C++
13 54 (2.42%) T-SQL
14 51 (2.28%) ES6
15 39 (1.75%) Bash Shell
16 34 (1.52%) Clojure
16 34 (1.52%) PowerShell
17 28 (1.25%) Apple Swift
18 24 (1.08%) Elixir
Qualifications
1 120 (5.38%) Degree
2 108 (4.84%) Security Cleared
3 101 (4.53%) SC Cleared
4 43 (1.93%) Computer Science Degree
5 15 (0.67%) PhD
6 12 (0.54%) DV Cleared
6 12 (0.54%) Master's Degree
7 8 (0.36%) SANS
8 6 (0.27%) ISTQB
8 6 (0.27%) OSCE
8 6 (0.27%) OSCP
9 4 (0.18%) ISEB
9 4 (0.18%) ISTQB Foundation Certification
10 2 (0.090%) ISEB Practitioner
10 2 (0.090%) MCPD
10 2 (0.090%) Microsoft Certification
10 2 (0.090%) Numerate Degree
11 1 (0.045%) BPSS Clearance
11 1 (0.045%) DBS Check
11 1 (0.045%) PMI Certification
Quality Assurance & Compliance
1 169 (7.57%) QA
2 14 (0.63%) GDPR
3 8 (0.36%) PCI DSS
3 8 (0.36%) WCAG
4 6 (0.27%) ISO/IEC 27001
4 6 (0.27%) NIST
5 1 (0.045%) Data Quality
5 1 (0.045%) SLA
System Software
1 672 (30.11%) Docker
2 23 (1.03%) Active Directory
3 12 (0.54%) Postfix
4 3 (0.13%) Firmware
4 3 (0.13%) LXC
5 1 (0.045%) HDFS
5 1 (0.045%) Platform Symphony
5 1 (0.045%) VMware Infrastructure
Systems Management
1 411 (18.41%) Kubernetes
2 225 (10.08%) Terraform
3 127 (5.69%) Ansible
4 84 (3.76%) Puppet
5 34 (1.52%) Opscode Chef
6 28 (1.25%) Istio
7 23 (1.03%) Fortio
7 23 (1.03%) Kiali
8 12 (0.54%) Kibana
8 12 (0.54%) Prometheus
9 9 (0.40%) Rancher
10 7 (0.31%) Marathon
10 7 (0.31%) Mesos
11 6 (0.27%) Consul
11 6 (0.27%) linkerd
12 4 (0.18%) Grafana
13 3 (0.13%) Nessus
14 2 (0.090%) Salt
15 1 (0.045%) ZABBIX
Vendors
1 185 (8.29%) Microsoft
2 74 (3.32%) Google
3 57 (2.55%) Oracle
4 27 (1.21%) Atlassian
4 27 (1.21%) Xamarin
5 22 (0.99%) Salesforce.com
6 14 (0.63%) Adobe
7 13 (0.58%) Zend
8 11 (0.49%) Facebook
8 11 (0.49%) MuleSoft
9 10 (0.45%) Sony
10 9 (0.40%) Databricks
11 8 (0.36%) Splunk
12 7 (0.31%) Solace
13 6 (0.27%) Salesforce Marketing Cloud
13 6 (0.27%) SAP
13 6 (0.27%) Sitecore
13 6 (0.27%) Talend
13 6 (0.27%) Twitter
14 5 (0.22%) IBM