Period
to 25 October 2021

The following table provides summary statistics for permanent job vacancies advertised in Central 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 25 October 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
London > Central London
6 months to
25 Oct 2021
Same period 2020 Same period 2019
Rank 42 18 26
Rank change year-on-year -24 +8 -4
Permanent jobs citing TDD 403 458 1,113
As % of all permanent jobs advertised in Central London 5.89% 11.08% 8.84%
As % of the Processes & Methodologies category 6.26% 11.78% 9.44%
Number of salaries quoted 363 412 1,062
10th Percentile £52,500 £50,125 £46,250
25th Percentile £63,750 £57,500 £56,250
Median annual salary (50th Percentile) £75,000 £70,000 £70,000
Median % change year-on-year +7.14% - -
75th Percentile £95,000 £85,000 £82,500
90th Percentile £101,000 £95,000 £91,250
London median annual salary £75,000 £70,000 £67,500
% change year-on-year +7.14% +3.70% -

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 Central London with a requirement for process or methodology skills.

All Process and Methodology Skills
Central London
Permanent vacancies with a requirement for process or methodology skills 6,434 3,888 11,790
As % of all permanent IT jobs advertised in Central London 94.05% 94.05% 93.65%
Number of salaries quoted 5,742 3,413 10,432
10th Percentile £42,500 £43,750 £37,500
25th Percentile £55,000 £52,500 £50,000
Median annual salary (50th Percentile) £70,000 £70,000 £65,000
Median % change year-on-year - +7.69% +4.00%
75th Percentile £90,000 £85,000 £82,500
90th Percentile £105,000 £100,000 £96,250
London median annual salary £70,000 £70,000 £65,000
% change year-on-year - +7.69% +4.00%

TDD
Job Vacancy Trend in Central London

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

Job vacancy trend for TDD in Central London

TDD
Salary Trend in Central London

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

Salary trend for TDD in Central London

TDD
Salary Histogram in Central London

Salary distribution for jobs citing TDD in Central London over the 6 months to 25 October 2021.

Salary histogram for TDD in Central London

TDD
Job Locations in Central London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the Central London region over the 6 months to 25 October 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
City of London -37 322 £75,000 +7.14% 252
West End of London -1 21 £83,750 +45.65% 5
Camden -7 4 £55,000 -8.33% 3
Southwark -5 1 - - 1
TDD
London

For the 6 months to 25 October 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 Central London region with a requirement for TDD.

1 327 (81.14%) Agile Software Development
2 166 (41.19%) Java
3 151 (37.47%) JavaScript
3 151 (37.47%) Software Engineering
4 149 (36.97%) .NET
5 148 (36.72%) C#
6 146 (36.23%) Microservices
7 142 (35.24%) AWS
8 132 (32.75%) DevOps
9 127 (31.51%) SQL
10 120 (29.78%) Finance
10 120 (29.78%) BDD
11 106 (26.30%) Azure
12 103 (25.56%) React
12 103 (25.56%) AngularJS
13 101 (25.06%) HTML
14 95 (23.57%) Web Services
15 93 (23.08%) CSS
16 90 (22.33%) Scrum
17 88 (21.84%) Continuous Integration
18 85 (21.09%) Docker
19 84 (20.84%) SQL Server
20 80 (19.85%) Git (software)
20 80 (19.85%) Social Skills
21 79 (19.60%) Full Stack Development
22 77 (19.11%) .NET Core
22 77 (19.11%) TypeScript
23 72 (17.87%) Spring
24 65 (16.13%) Fintech
25 61 (15.14%) Analytics

TDD
Co-occurring IT Skills in Central 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 22 (5.46%) Apache Spark
2 17 (4.22%) Elasticsearch
3 10 (2.48%) Apache Solr
3 10 (2.48%) CMS
3 10 (2.48%) Drupal
4 6 (1.49%) Confluence
5 4 (0.99%) IIS
6 3 (0.74%) Tomcat
7 2 (0.50%) Jetty
7 2 (0.50%) OpenStack
7 2 (0.50%) SAS
7 2 (0.50%) SharePoint
8 1 (0.25%) Apache
8 1 (0.25%) Cloud Foundry
8 1 (0.25%) GlassFish
8 1 (0.25%) JBoss
8 1 (0.25%) MS Exchange
8 1 (0.25%) Oracle Coherence
8 1 (0.25%) Oracle SOA Suite
8 1 (0.25%) WebSphere
Applications
1 2 (0.50%) Microsoft Office
Business Applications
1 1 (0.25%) IBM Operational Decision Manager
1 1 (0.25%) Salesforce.com CRM
Cloud Services
1 142 (35.24%) AWS
2 106 (26.30%) Azure
3 43 (10.67%) SaaS
4 37 (9.18%) Serverless
5 30 (7.44%) GCP
6 22 (5.46%) AWS Lambda
7 18 (4.47%) npm
8 14 (3.47%) AWS CloudFormation
9 13 (3.23%) Azure Functions
10 6 (1.49%) Amazon ECS
10 6 (1.49%) Amazon EKS
11 5 (1.24%) Amazon EC2
11 5 (1.24%) Azure Cosmos DB
12 4 (0.99%) Azure Service Bus
12 4 (0.99%) Azure Service Fabric
12 4 (0.99%) GitHub
12 4 (0.99%) Google Analytics
12 4 (0.99%) NuGet
12 4 (0.99%) PaaS
12 4 (0.99%) Trello
Communications & Networking
1 3 (0.74%) HTTP
2 2 (0.50%) AMQP
2 2 (0.50%) VoIP
3 1 (0.25%) Network Security
Database & Business Intelligence
1 84 (20.84%) SQL Server
2 44 (10.92%) NoSQL
3 29 (7.20%) MongoDB
4 22 (5.46%) Big Data
5 14 (3.47%) MySQL
6 13 (3.23%) PostgreSQL
7 11 (2.73%) Redis
8 10 (2.48%) Apache Cassandra
8 10 (2.48%) Hadoop
8 10 (2.48%) Relational Database
9 9 (2.23%) Amazon DynamoDB
9 9 (2.23%) Data Warehouse
10 8 (1.99%) Azure SQL Database
11 6 (1.49%) HBase
12 3 (0.74%) MariaDB
12 3 (0.74%) SQL Server 2012
13 2 (0.50%) Amazon Athena
13 2 (0.50%) Apache Ignite
13 2 (0.50%) RDBMS
13 2 (0.50%) Star Schema
Development Applications
1 80 (19.85%) Git (software)
2 36 (8.93%) Jenkins
3 28 (6.95%) NUnit
4 26 (6.45%) webpack
5 22 (5.46%) Selenium
6 21 (5.21%) TeamCity
7 19 (4.71%) JIRA
8 16 (3.97%) Cucumber
8 16 (3.97%) Team Foundation Server
9 14 (3.47%) Bower
9 14 (3.47%) Grunt
10 13 (3.23%) Octopus Deploy
11 11 (2.73%) Maven
11 11 (2.73%) Visual Studio
12 10 (2.48%) Moq
12 10 (2.48%) WebDriver
13 9 (2.23%) Jasmine
13 9 (2.23%) JUnit
14 8 (1.99%) Rhino Mocks
14 8 (1.99%) SpecFlow
General
1 120 (29.78%) Finance
2 80 (19.85%) Social Skills
3 25 (6.20%) Banking
4 23 (5.71%) Front Office
5 19 (4.71%) Analytical Skills
6 17 (4.22%) Publishing
7 15 (3.72%) Retail
8 12 (2.98%) Investment Banking
9 4 (0.99%) Financial Institution
10 2 (0.50%) Games
11 1 (0.25%) Inclusion and Diversity
11 1 (0.25%) Law
11 1 (0.25%) Legal
11 1 (0.25%) Organisational Skills
11 1 (0.25%) Presentation Skills
11 1 (0.25%) Public Sector
11 1 (0.25%) Public Speaking
11 1 (0.25%) Telecoms
Job Titles
1 227 (56.33%) Developer
2 83 (20.60%) Senior Developer
3 66 (16.38%) .NET Developer
4 61 (15.14%) Java Developer
5 56 (13.90%) C# Developer
6 46 (11.41%) Software Engineer
7 43 (10.67%) C# .NET Developer
7 43 (10.67%) Lead Developer
8 33 (8.19%) Senior .NET Developer
9 28 (6.95%) Java Engineer
10 27 (6.70%) Senior C# Developer
11 26 (6.45%) Senior C# .NET Developer
12 25 (6.20%) Software Developer
13 24 (5.96%) Full Stack Developer
14 19 (4.71%) Senior Software Developer
14 19 (4.71%) Senior Software Engineer
15 18 (4.47%) Principal Engineer
16 16 (3.97%) .NET Software Developer
16 16 (3.97%) C# Software Developer
16 16 (3.97%) PHP Developer
Libraries, Frameworks & Software Standards
1 149 (36.97%) .NET
2 103 (25.56%) AngularJS
2 103 (25.56%) React
3 101 (25.06%) HTML
4 95 (23.57%) Web Services
5 93 (23.08%) CSS
6 77 (19.11%) .NET Core
7 72 (17.87%) Spring
8 59 (14.64%) HTML5
9 57 (14.14%) Node.js
10 55 (13.65%) Spring Boot
11 54 (13.40%) Kafka
12 53 (13.15%) REST
13 48 (11.91%) .NET Framework
14 45 (11.17%) ASP.NET Web API
15 42 (10.42%) ASP.NET
16 39 (9.68%) RESTful
17 35 (8.68%) Vue.js
18 34 (8.44%) Sass
19 31 (7.69%) jQuery
Miscellaneous
1 29 (7.20%) Enterprise Software
2 27 (6.70%) Greenfield Project
3 23 (5.71%) Self-Motivation
4 22 (5.46%) User Experience
5 12 (2.98%) Data Structures
5 12 (2.98%) Mobile App
6 11 (2.73%) Algorithms
7 8 (1.99%) Foreign Exchange (FX)
7 8 (1.99%) Hybrid Cloud
7 8 (1.99%) Legacy Code
8 7 (1.74%) Derivative
8 7 (1.74%) Virtual Team
9 6 (1.49%) Client/Server
9 6 (1.49%) Hedge funds
9 6 (1.49%) Social Media
10 4 (0.99%) Cloud Native
10 4 (0.99%) Legacy Systems
11 3 (0.74%) Data Centre
11 3 (0.74%) Video\Live Streaming
12 2 (0.50%) Public Cloud
Operating Systems
1 19 (4.71%) Linux
2 4 (0.99%) Unix
3 2 (0.50%) Apple iOS
3 2 (0.50%) Mac OS X
4 1 (0.25%) Android
4 1 (0.25%) DC/OS
Processes & Methodologies
1 327 (81.14%) Agile Software Development
2 151 (37.47%) Software Engineering
3 146 (36.23%) Microservices
4 132 (32.75%) DevOps
5 120 (29.78%) BDD
6 90 (22.33%) Scrum
7 88 (21.84%) Continuous Integration
8 79 (19.60%) Full Stack Development
9 65 (16.13%) Fintech
10 61 (15.14%) Analytics
11 53 (13.15%) SDLC
12 52 (12.90%) SOLID
13 49 (12.16%) Test Automation
14 48 (11.91%) MVC
15 46 (11.41%) Mentoring
16 42 (10.42%) OO
17 41 (10.17%) Multithreading
18 34 (8.44%) Continuous Delivery
19 32 (7.94%) Web Development
20 29 (7.20%) Continuous Deployment
Programming Languages
1 166 (41.19%) Java
2 151 (37.47%) JavaScript
3 148 (36.72%) C#
4 127 (31.51%) SQL
5 77 (19.11%) TypeScript
6 47 (11.66%) Python
7 38 (9.43%) Java 8
8 31 (7.69%) Scala
9 29 (7.20%) T-SQL
10 28 (6.95%) Kotlin
11 24 (5.96%) PHP
12 21 (5.21%) ES6
13 13 (3.23%) Java 11
14 12 (2.98%) Go
15 10 (2.48%) Ruby
16 8 (1.99%) Clojure
17 5 (1.24%) C++
17 5 (1.24%) PowerShell
18 4 (0.99%) Haskell
19 3 (0.74%) C
Qualifications
1 23 (5.71%) Degree
2 8 (1.99%) Computer Science Degree
3 4 (0.99%) ISTQB
3 4 (0.99%) ISTQB Foundation Certification
4 3 (0.74%) Master's Degree
5 2 (0.50%) ISTQB Advanced Certification
6 1 (0.25%) DBS Check
6 1 (0.25%) ISEB
6 1 (0.25%) SANS
Quality Assurance & Compliance
1 44 (10.92%) QA
2 9 (2.23%) Accessibility
3 2 (0.50%) GDPR
4 1 (0.25%) Data Quality
4 1 (0.25%) ISO 20022
4 1 (0.25%) ISO/IEC 27001
4 1 (0.25%) SEPA
System Software
1 85 (21.09%) Docker
2 4 (0.99%) Apache ZooKeeper
Systems Management
1 59 (14.64%) Kubernetes
2 4 (0.99%) Terraform
3 2 (0.50%) Kibana
3 2 (0.50%) logstash
4 1 (0.25%) Ansible
4 1 (0.25%) Apache Brooklyn
4 1 (0.25%) Grafana
4 1 (0.25%) Marathon
4 1 (0.25%) Mesos
4 1 (0.25%) MIIS
4 1 (0.25%) Opscode Chef
4 1 (0.25%) Prometheus
Vendors
1 28 (6.95%) Microsoft
2 22 (5.46%) Oracle
3 8 (1.99%) Cloudera
4 7 (1.74%) Google
5 4 (0.99%) IBM
5 4 (0.99%) Xamarin
6 3 (0.74%) Salesforce.com
7 2 (0.50%) Sybase
8 1 (0.25%) Actuate
8 1 (0.25%) Atlassian
8 1 (0.25%) Cognos
8 1 (0.25%) HP
8 1 (0.25%) Informatica
8 1 (0.25%) MapR
8 1 (0.25%) Murex
8 1 (0.25%) Netezza
8 1 (0.25%) ServiceNow
8 1 (0.25%) Teradata
8 1 (0.25%) TIBCO
8 1 (0.25%) VMware