Period
to

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 28 June 2022 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
Central London > City of London
6 months to
28 Jun 2022
Same period 2021 Same period 2020
Rank 28 12 23
Rank change year-on-year -16 +11 -7
Contract jobs citing TDD 287 364 192
As % of all contract jobs advertised in the City of London 6.72% 11.74% 7.10%
As % of the Processes & Methodologies category 7.33% 12.84% 8.05%
Number of daily rates quoted 232 282 164
10th Percentile £475 £450 £423
25th Percentile £525 £513 £469
Median daily rate (50th Percentile) £638 £613 £550
Median % change year-on-year +4.08% +11.36% -
75th Percentile £738 £644 £638
90th Percentile £775 £688 £688
Central London median daily rate £638 £613 £550
% change year-on-year +4.08% +11.36% -
Number of hourly rates quoted 1 0 1
10th Percentile - - -
25th Percentile - - £52.50
Median hourly rate £77.00 - £55.00
75th Percentile - - £57.50
90th Percentile - - -
Central London median hourly rate £77.00 - £55.00
% change year-on-year - - -8.33%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 3,915 2,835 2,385
As % of all contract IT jobs advertised in the City of London 91.60% 91.45% 88.20%
Number of daily rates quoted 2,890 2,081 1,774
10th Percentile £388 £358 £338
25th Percentile £475 £450 £417
Median daily rate (50th Percentile) £575 £550 £520
Median % change year-on-year +4.55% +5.77% -0.95%
75th Percentile £691 £638 £603
90th Percentile £788 £719 £675
Central London median daily rate £575 £544 £506
% change year-on-year +5.70% +7.46% -3.57%
Number of hourly rates quoted 45 31 40
10th Percentile £18.50 £8.00 £12.42
25th Percentile £26.00 £12.38 £14.28
Median hourly rate £43.00 £23.45 £25.00
Median % change year-on-year +83.37% -6.20% +29.03%
75th Percentile £53.75 £32.70 £39.25
90th Percentile £62.20 £42.25 £52.90
Central London median hourly rate £42.50 £22.25 £26.44
% change year-on-year +91.01% -15.85% +30.57%

TDD
Job Vacancy Trend in the City of London

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

Job vacancy trend for TDD in the City of London

TDD
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing TDD in the City of London.

Daily rate trend for TDD in the City of London

TDD
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing TDD in the City of London over the 6 months to 28 June 2022.

Daily rate histogram for TDD in the City of London

TDD
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing TDD in the City of London.

Hourly rate trend for TDD in the City of London

TDD
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the City of London region over the 6 months to 28 June 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Jobs
London Bridge - 3 £500 -
TDD
Central London

For the 6 months to 28 June 2022, IT contractor 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 contract job ads across the City of London region with a requirement for TDD.

1 178 (62.02%) Agile
2 155 (54.01%) Java
3 99 (34.49%) Microservices
4 92 (32.06%) CI/CD
5 68 (23.69%) Finance
5 68 (23.69%) JavaScript
6 62 (21.60%) BDD
7 61 (21.25%) Spring
8 52 (18.12%) Docker
9 51 (17.77%) Azure
10 50 (17.42%) Test Automation
10 50 (17.42%) Banking
11 49 (17.07%) REST
12 47 (16.38%) DevOps
12 47 (16.38%) Scrum
12 47 (16.38%) Continuous Integration
13 45 (15.68%) Kubernetes
14 42 (14.63%) Software Engineering
15 40 (13.94%) Git (software)
15 40 (13.94%) AWS
15 40 (13.94%) Kotlin
16 39 (13.59%) SQL
16 39 (13.59%) .NET
16 39 (13.59%) Full Stack Development
17 37 (12.89%) React
18 36 (12.54%) Python
19 35 (12.20%) Greenfield Project
20 33 (11.50%) Maven
21 31 (10.80%) JIRA
21 31 (10.80%) HTML

TDD
Co-occurring IT Skills in the City of 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 10 (3.48%) Apache Spark
2 4 (1.39%) Apache Airflow
2 4 (1.39%) SharePoint
2 4 (1.39%) WebLogic
3 3 (1.05%) Cloud Foundry
3 3 (1.05%) CMS
3 3 (1.05%) Confluence
3 3 (1.05%) Headless CMS
3 3 (1.05%) Oracle Coherence
3 3 (1.05%) Tomcat
4 2 (0.70%) JBoss
5 1 (0.35%) Alfresco
5 1 (0.35%) Apache
5 1 (0.35%) Apache Solr
5 1 (0.35%) Camunda
5 1 (0.35%) Jupyter
5 1 (0.35%) Oracle SOA Suite
Applications
1 1 (0.35%) Microsoft Office
Business Applications
1 1 (0.35%) Dynamics CRM
1 1 (0.35%) RMDS
Cloud Services
1 51 (17.77%) Azure
2 40 (13.94%) AWS
3 18 (6.27%) GitHub
4 8 (2.79%) OpenShift
5 7 (2.44%) Azure DevOps
5 7 (2.44%) SaaS
6 6 (2.09%) AWS Lambda
6 6 (2.09%) GCP
6 6 (2.09%) Serverless
7 5 (1.74%) IaaS
8 4 (1.39%) Amazon EMR
8 4 (1.39%) Amazon SQS
8 4 (1.39%) PaaS
9 3 (1.05%) Azure Data Factory
9 3 (1.05%) Datadog
9 3 (1.05%) Dynamics 365
10 2 (0.70%) AWS CloudFormation
10 2 (0.70%) Azure Machine Learning
10 2 (0.70%) CloudFront
10 2 (0.70%) npm
Communications & Networking
1 2 (0.70%) AMQP
1 2 (0.70%) Internet
2 1 (0.35%) HTTP
2 1 (0.35%) MQTT
Database & Business Intelligence
1 30 (10.45%) PostgreSQL
2 23 (8.01%) SQL Server
3 16 (5.57%) Elasticsearch
3 16 (5.57%) NoSQL
4 12 (4.18%) Relational Database
5 11 (3.83%) MySQL
6 8 (2.79%) Redis
7 7 (2.44%) MongoDB
7 7 (2.44%) Oracle Database
8 6 (2.09%) Big Data
9 5 (1.74%) Data Warehouse
10 4 (1.39%) DynamoDB
10 4 (1.39%) Hadoop
10 4 (1.39%) Hazelcast
10 4 (1.39%) RDBMS
11 3 (1.05%) Oracle Database 11g
11 3 (1.05%) Oracle Database 12c
12 2 (0.70%) Amazon Redshift
12 2 (0.70%) Azure SQL Database
12 2 (0.70%) SQL Server Integration Services
Development Applications
1 40 (13.94%) Git (software)
2 33 (11.50%) Maven
3 31 (10.80%) JIRA
4 28 (9.76%) Cucumber
5 25 (8.71%) Jenkins
6 20 (6.97%) JUnit
7 11 (3.83%) Mockito
8 10 (3.48%) TeamCity
9 9 (3.14%) Selenium
10 8 (2.79%) Atlassian Bamboo
11 7 (2.44%) Gradle
11 7 (2.44%) IntelliJ
12 6 (2.09%) webpack
13 5 (1.74%) Cypress.io
14 4 (1.39%) GitLab
15 3 (1.05%) Eclipse
15 3 (1.05%) Jasmine
15 3 (1.05%) Mercurial
15 3 (1.05%) Mocha
15 3 (1.05%) Visual Studio Team System
General
1 68 (23.69%) Finance
2 50 (17.42%) Banking
3 30 (10.45%) Social Skills
4 24 (8.36%) Front Office
5 20 (6.97%) Games
6 17 (5.92%) Publishing
7 13 (4.53%) Financial Institution
7 13 (4.53%) Investment Banking
8 11 (3.83%) Legal
9 7 (2.44%) Analytical Skills
10 3 (1.05%) Advertising
10 3 (1.05%) Automotive
10 3 (1.05%) Organisational Skills
11 2 (0.70%) German Language
11 2 (0.70%) Marketing
11 2 (0.70%) Presentation Skills
11 2 (0.70%) Prime Brokerage
11 2 (0.70%) Telecoms
12 1 (0.35%) Influencing Skills
12 1 (0.35%) Retail
Job Titles
1 239 (83.28%) Developer
2 121 (42.16%) Java Developer
3 47 (16.38%) Senior Developer
4 27 (9.41%) .NET Developer
5 26 (9.06%) Senior Java Developer
6 25 (8.71%) Full Stack Developer
7 15 (5.23%) Python Developer
8 14 (4.88%) Azure Developer
9 11 (3.83%) Senior Python Developer
10 10 (3.48%) E-Commerce Developer
10 10 (3.48%) Front Office Developer
11 9 (3.14%) Agile Developer
11 9 (3.14%) Agile Java Developer
11 9 (3.14%) Java E-Commerce Developer
11 9 (3.14%) Java Engineer
11 9 (3.14%) Scala Developer
11 9 (3.14%) Software Engineer
12 8 (2.79%) DevOps Developer
12 8 (2.79%) Lead Developer
12 8 (2.79%) PHP Developer
Libraries, Frameworks & Software Standards
1 61 (21.25%) Spring
2 49 (17.07%) REST
3 39 (13.59%) .NET
4 37 (12.89%) React
5 31 (10.80%) HTML
6 30 (10.45%) AngularJS
7 25 (8.71%) CSS
7 25 (8.71%) Kafka
8 21 (7.32%) Spring Boot
9 19 (6.62%) HTML5
10 17 (5.92%) Django
11 16 (5.57%) Node.js
12 15 (5.23%) Hibernate
13 14 (4.88%) GraphQL
13 14 (4.88%) Web Services
14 12 (4.18%) ASP.NET
14 12 (4.18%) RESTful
15 11 (3.83%) .NET Core
16 10 (3.48%) CSS3
16 10 (3.48%) Redux
Miscellaneous
1 35 (12.20%) Greenfield Project
2 12 (4.18%) Hedge funds
3 11 (3.83%) User Experience
4 5 (1.74%) Credit Risk
5 4 (1.39%) Management Information System
5 4 (1.39%) Self-Motivation
6 3 (1.05%) Cloud Native
6 3 (1.05%) Foreign Exchange (FX)
7 2 (0.70%) Blockchain
7 2 (0.70%) Data Structures
7 2 (0.70%) Enterprise Software
7 2 (0.70%) Fixed Income
8 1 (0.35%) Algorithms
8 1 (0.35%) Derivative
8 1 (0.35%) Equities
8 1 (0.35%) IoT
8 1 (0.35%) Linux Command Line
8 1 (0.35%) Reference Data
8 1 (0.35%) Reinsurance
8 1 (0.35%) Sports Betting
Operating Systems
1 7 (2.44%) Linux
2 3 (1.05%) Windows
3 2 (0.70%) Android
3 2 (0.70%) Unix
4 1 (0.35%) Apple iOS
Processes & Methodologies
1 178 (62.02%) Agile
2 99 (34.49%) Microservices
3 92 (32.06%) CI/CD
4 62 (21.60%) BDD
5 50 (17.42%) Test Automation
6 47 (16.38%) Continuous Integration
6 47 (16.38%) DevOps
6 47 (16.38%) Scrum
7 42 (14.63%) Software Engineering
8 39 (13.59%) Full Stack Development
9 26 (9.06%) Kanban
10 25 (8.71%) Pair Programming
11 23 (8.01%) E-Commerce
11 23 (8.01%) Fintech
11 23 (8.01%) Unit Testing
12 20 (6.97%) Computer Science
13 18 (6.27%) Mathematics
14 17 (5.92%) Clean Code
14 17 (5.92%) OO
15 16 (5.57%) Problem-Solving
Programming Languages
1 155 (54.01%) Java
2 68 (23.69%) JavaScript
3 40 (13.94%) Kotlin
4 39 (13.59%) SQL
5 36 (12.54%) Python
6 28 (9.76%) C#
7 25 (8.71%) TypeScript
8 20 (6.97%) Scala
9 8 (2.79%) PHP
10 6 (2.09%) C++
10 6 (2.09%) PL/SQL
11 5 (1.74%) PowerShell
12 4 (1.39%) ES6
12 4 (1.39%) Ruby
13 2 (0.70%) Go
13 2 (0.70%) Shell Script
13 2 (0.70%) XPath
14 1 (0.35%) Bash
14 1 (0.35%) C
14 1 (0.35%) Groovy
Qualifications
1 20 (6.97%) Degree
2 15 (5.23%) Security Cleared
3 12 (4.18%) SC Cleared
4 2 (0.70%) Numerate Degree
5 1 (0.35%) AWS Certification
5 1 (0.35%) Computer Science Degree
Quality Assurance & Compliance
1 11 (3.83%) GDPR
2 9 (3.14%) QA
3 4 (1.39%) Accessibility
4 1 (0.35%) Data Quality
System Software
1 52 (18.12%) Docker
2 4 (1.39%) Virtual Machines
3 1 (0.35%) VirtualBox
Systems Management
1 45 (15.68%) Kubernetes
2 30 (10.45%) Terraform
3 15 (5.23%) Ansible
4 2 (0.70%) Kibana
4 2 (0.70%) logstash
4 2 (0.70%) Puppet
5 1 (0.35%) Argo
5 1 (0.35%) Docker Swarm
5 1 (0.35%) Grafana
5 1 (0.35%) Prometheus
5 1 (0.35%) Rancher
Vendors
1 16 (5.57%) Oracle
2 15 (5.23%) Microsoft
3 9 (3.14%) Google
4 3 (1.05%) Salesforce.com
4 3 (1.05%) Sitecore
5 2 (0.70%) Bloomberg
5 2 (0.70%) Databricks
5 2 (0.70%) DevExpress
5 2 (0.70%) Salesforce Marketing Cloud
5 2 (0.70%) Sybase
6 1 (0.35%) Cloudera
6 1 (0.35%) Green Hat
6 1 (0.35%) Hortonworks
6 1 (0.35%) HP
6 1 (0.35%) Huawei
6 1 (0.35%) IBM
6 1 (0.35%) ION Trading
6 1 (0.35%) Ping Identity
6 1 (0.35%) Solace
6 1 (0.35%) Telerik