Period
to 14 June 2021

The following table provides summary statistics for contract job vacancies advertised in 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 14 June 2021 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)
England > London
6 months to
14 Jun 2021
Same period 2020 Same period 2019
Rank 25 27 16
Rank change year-on-year +2 -11 -3
Contract jobs citing TDD 1,826 1,268 3,530
As % of all contract jobs advertised in London 7.14% 7.00% 8.81%
As % of the Processes & Methodologies category 7.91% 7.89% 9.89%
Number of daily rates quoted 1,413 1,042 2,942
10th Percentile £421 £425 £415
25th Percentile £475 £475 £475
Median daily rate (50th Percentile) £563 £550 £546
Median % change year-on-year +2.27% +0.69% +4.05%
75th Percentile £638 £638 £619
90th Percentile £713 £700 £688
England median daily rate £550 £525 £525
% change year-on-year +4.76% - +5.00%
Number of hourly rates quoted 11 16 1
Median hourly rate £66.00 £62.00 £60.00
Median % change year-on-year +6.45% +3.33% +33.33%
England median hourly rate £65.00 £61.50 £45.45
% change year-on-year +5.69% +35.31% +1.00%

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 London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Contract vacancies with a requirement for process or methodology skills 23,084 16,078 35,708
As % of all contract IT jobs advertised in London 90.21% 88.82% 89.09%
Number of daily rates quoted 16,485 11,569 25,814
10th Percentile £356 £325 £338
25th Percentile £431 £420 £419
Median daily rate (50th Percentile) £525 £525 £520
Median % change year-on-year - +0.96% +4.00%
75th Percentile £638 £623 £600
90th Percentile £713 £710 £688
England median daily rate £500 £475 £475
% change year-on-year +5.26% - +2.70%
Number of hourly rates quoted 233 201 359
10th Percentile £15.01 £13.75 £12.21
25th Percentile £20.50 £18.50 £15.50
Median hourly rate £34.88 £28.00 £22.29
Median % change year-on-year +24.57% +25.65% +1.30%
75th Percentile £52.75 £47.75 £40.00
90th Percentile £66.50 £61.00 £52.50
England median hourly rate £24.00 £22.00 £22.50
% change year-on-year +9.09% -2.22% +7.14%

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
Contractor Daily Rate Trend in London

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

Daily rate trend for TDD in London

TDD
Daily Rate Histogram in London

Daily rate distribution for jobs citing TDD in London over the 6 months to 14 June 2021.

Daily rate histogram for TDD in London

TDD
Contractor Hourly Rate Trend in London

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

Hourly rate trend for TDD in London

TDD
Contract Job Locations in 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 London region over the 6 months to 14 June 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London +17 356 £610 +10.91% 283
West London +8 73 £575 +7.48% 91
East London +7 28 £500 -9.09% 36
South London -9 14 £450 -14.29% 10
TDD
England

For the 6 months to 14 June 2021, 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 London region with a requirement for TDD.

1 1,243 (68.07%) Agile Software Development
2 746 (40.85%) Java
3 658 (36.04%) BDD
4 557 (30.50%) JavaScript
5 510 (27.93%) DevOps
6 490 (26.83%) Azure
7 478 (26.18%) Microservices
8 427 (23.38%) Git (software)
9 403 (22.07%) Continuous Integration
10 397 (21.74%) AWS
11 396 (21.69%) Scrum
12 393 (21.52%) SQL
12 393 (21.52%) Docker
13 383 (20.97%) Software Engineering
14 380 (20.81%) .NET
15 373 (20.43%) C#
16 364 (19.93%) Spring
17 345 (18.89%) Test Automation
18 341 (18.67%) Jenkins
19 304 (16.65%) React
20 301 (16.48%) Kubernetes
20 301 (16.48%) Finance
21 295 (16.16%) Banking
22 292 (15.99%) Social Skills
23 290 (15.88%) AngularJS
24 281 (15.39%) Pair Programming
25 277 (15.17%) HTML
26 271 (14.84%) CSS
27 248 (13.58%) TypeScript
28 239 (13.09%) Node.js

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 64 (3.50%) Apache Spark
2 59 (3.23%) Confluence
3 35 (1.92%) SharePoint
4 31 (1.70%) Oracle Coherence
5 28 (1.53%) Oracle SOA Suite
6 26 (1.42%) Cloud Foundry
7 25 (1.37%) Apache
8 22 (1.20%) JBoss
9 21 (1.15%) Tomcat
10 18 (0.99%) Elasticsearch
11 17 (0.93%) Mule
12 14 (0.77%) Adobe Experience Manager
12 14 (0.77%) Red Hat Fuse
13 12 (0.66%) Apache Airflow
13 12 (0.66%) Jetty
13 12 (0.66%) NServiceBus
13 12 (0.66%) WebSphere
14 10 (0.55%) IIS
15 8 (0.44%) CMS
15 8 (0.44%) nginx
Applications
1 9 (0.49%) Photoshop
2 7 (0.38%) Microsoft Excel
3 3 (0.16%) Figma
4 2 (0.11%) Chatbot
4 2 (0.11%) Sketch
4 2 (0.11%) Spreadsheet
5 1 (0.055%) Microsoft Office
5 1 (0.055%) S-PLUS
5 1 (0.055%) Zeplin
Business Applications
1 7 (0.38%) Adobe Campaign
2 4 (0.22%) Dynamics CRM
3 2 (0.11%) SAP S/4HANA
4 1 (0.055%) Dynamics AX
4 1 (0.055%) Dynamics NAV
4 1 (0.055%) Oracle BPM
4 1 (0.055%) Oracle Subledger Accounting
4 1 (0.055%) Salesforce.com CRM
4 1 (0.055%) SAP Hybris
4 1 (0.055%) SAP Oil and Gas
Cloud Services
1 490 (26.83%) Azure
2 397 (21.74%) AWS
3 115 (6.30%) GCP
4 107 (5.86%) Serverless
5 67 (3.67%) GitHub
6 57 (3.12%) Power Platform
7 37 (2.03%) Azure Active Directory
8 34 (1.86%) IaaS
9 33 (1.81%) AWS Lambda
9 33 (1.81%) PaaS
10 32 (1.75%) npm
11 31 (1.70%) Azure Functions
12 30 (1.64%) Azure Service Bus
13 25 (1.37%) Cloud Computing
13 25 (1.37%) SaaS
14 24 (1.31%) OpenShift
15 16 (0.88%) AWS CloudFormation
15 16 (0.88%) Datadog
15 16 (0.88%) PowerApps
16 15 (0.82%) Azure Logic Apps
Communications & Networking
1 14 (0.77%) HTTP
2 13 (0.71%) Internet
3 10 (0.55%) Broadband
3 10 (0.55%) Wi-Fi
4 8 (0.44%) DECT
4 8 (0.44%) UPnP
5 7 (0.38%) DNS
5 7 (0.38%) SSL
6 6 (0.33%) IPv4
6 6 (0.33%) IPv6
6 6 (0.33%) Kerberos
6 6 (0.33%) Multicast
6 6 (0.33%) PPP
6 6 (0.33%) TCP/IP
7 5 (0.27%) DMARC
7 5 (0.27%) RTMP
7 5 (0.27%) SMS
7 5 (0.27%) SMTP
8 2 (0.11%) DLNA
9 1 (0.055%) HTTPS
Database & Business Intelligence
1 134 (7.34%) NoSQL
2 122 (6.68%) SQL Server
3 75 (4.11%) MongoDB
4 72 (3.94%) Relational Database
5 58 (3.18%) Hadoop
6 55 (3.01%) PostgreSQL
7 45 (2.46%) Big Data
8 40 (2.19%) Power BI
9 38 (2.08%) MySQL
10 32 (1.75%) Redis
11 29 (1.59%) BigQuery
12 26 (1.42%) Data Warehouse
12 26 (1.42%) Hazelcast
13 25 (1.37%) Apache Cassandra
13 25 (1.37%) Tableau
14 22 (1.20%) Amazon DynamoDB
15 21 (1.15%) Azure SQL Database
15 21 (1.15%) Tableau Desktop
15 21 (1.15%) Tableau Server
16 20 (1.10%) Oracle Database
Development Applications
1 427 (23.38%) Git (software)
2 341 (18.67%) Jenkins
3 170 (9.31%) JIRA
4 138 (7.56%) JUnit
5 132 (7.23%) Maven
6 130 (7.12%) Cucumber
7 91 (4.98%) Selenium
7 91 (4.98%) TeamCity
8 87 (4.76%) Mockito
9 74 (4.05%) Gradle
10 69 (3.78%) Octopus Deploy
11 60 (3.29%) webpack
12 58 (3.18%) Jasmine
13 57 (3.12%) Visual Studio
14 44 (2.41%) Cypress.io
14 44 (2.41%) Subversion
15 38 (2.08%) CircleCI
15 38 (2.08%) Xcode
16 35 (1.92%) GitLab
17 31 (1.70%) Mocha
General
1 301 (16.48%) Finance
2 295 (16.16%) Banking
3 292 (15.99%) Social Skills
4 169 (9.26%) Front Office
5 124 (6.79%) Investment Banking
6 65 (3.56%) Public Sector
7 56 (3.07%) Retail
8 48 (2.63%) Analytical Skills
9 43 (2.35%) Games
10 40 (2.19%) Manufacturing
11 34 (1.86%) Marketing
12 27 (1.48%) Telecoms
13 20 (1.10%) Automotive
14 15 (0.82%) Retail Banking
15 12 (0.66%) Documentation Skills
15 12 (0.66%) Multimedia
16 11 (0.60%) Influencing Skills
17 10 (0.55%) Electronics
18 9 (0.49%) Legal
18 9 (0.49%) Publishing
Job Titles
1 1,345 (73.66%) Developer
2 393 (21.52%) Java Developer
3 219 (11.99%) Senior Developer
4 158 (8.65%) C# Developer
5 142 (7.78%) React Developer
6 133 (7.28%) .NET Developer
7 99 (5.42%) Full Stack Developer
8 95 (5.20%) Software Engineer
9 91 (4.98%) Scala Developer
10 79 (4.33%) Front End Developer (Client-Side Developer)
11 77 (4.22%) JavaScript Developer
12 73 (4.00%) Senior Java Developer
13 69 (3.78%) Java Engineer
14 62 (3.40%) Agile Developer
15 59 (3.23%) C# .NET Developer
16 52 (2.85%) AWS Developer
17 47 (2.57%) Backend Developer
18 46 (2.52%) iOS Developer
19 43 (2.35%) Python Developer
19 43 (2.35%) Technical Leader
Libraries, Frameworks & Software Standards
1 380 (20.81%) .NET
2 364 (19.93%) Spring
3 304 (16.65%) React
4 290 (15.88%) AngularJS
5 277 (15.17%) HTML
6 271 (14.84%) CSS
7 239 (13.09%) Node.js
8 237 (12.98%) RESTful
9 235 (12.87%) REST
10 176 (9.64%) Spring Boot
11 158 (8.65%) Web Services
12 154 (8.43%) Redux
13 153 (8.38%) Kafka
14 152 (8.32%) HTML5
15 146 (8.00%) .NET Core
16 134 (7.34%) GraphQL
17 87 (4.76%) Jest
18 82 (4.49%) CSS3
19 80 (4.38%) Hibernate
20 74 (4.05%) ASP.NET
Miscellaneous
1 204 (11.17%) Greenfield Project
2 95 (5.20%) User Experience
3 83 (4.55%) Fixed Income
4 73 (4.00%) Foreign Exchange (FX)
5 59 (3.23%) Algorithms
5 59 (3.23%) Mobile App
6 58 (3.18%) Derivative
6 58 (3.18%) Self-Motivation
7 54 (2.96%) Data Structures
8 44 (2.41%) Cloud Native
9 38 (2.08%) Enterprise Software
10 25 (1.37%) Interest Rate Derivative
11 22 (1.20%) Credit Risk
12 21 (1.15%) CMDB
13 19 (1.04%) Management Information System
14 18 (0.99%) Market Risk
15 17 (0.93%) Hedge funds
16 16 (0.88%) Equities
16 16 (0.88%) Public Cloud
17 15 (0.82%) Reference Data
Operating Systems
1 156 (8.54%) Linux
2 103 (5.64%) Unix
3 87 (4.76%) Apple iOS
4 82 (4.49%) Android
5 27 (1.48%) Windows
6 15 (0.82%) Mac OS
7 10 (0.55%) Mac OS X
7 10 (0.55%) Windows Server 2016
8 8 (0.44%) OpenWrt
8 8 (0.44%) Windows Server
9 4 (0.22%) Debian
9 4 (0.22%) VMS
10 2 (0.11%) CentOS
10 2 (0.11%) Embedded Linux
10 2 (0.11%) tvOS
10 2 (0.11%) Ubuntu
10 2 (0.11%) Windows Server 2019
11 1 (0.055%) Tizen
11 1 (0.055%) webOS
Processes & Methodologies
1 1,243 (68.07%) Agile Software Development
2 658 (36.04%) BDD
3 510 (27.93%) DevOps
4 478 (26.18%) Microservices
5 403 (22.07%) Continuous Integration
6 396 (21.69%) Scrum
7 383 (20.97%) Software Engineering
8 345 (18.89%) Test Automation
9 281 (15.39%) Pair Programming
10 210 (11.50%) Unit Testing
11 168 (9.20%) MVC
12 166 (9.09%) Continuous Improvement
13 165 (9.04%) Continuous Delivery
14 152 (8.32%) Problem-Solving
15 131 (7.17%) Analytics
15 131 (7.17%) OO
16 126 (6.90%) Mentoring
17 118 (6.46%) Front End Development
18 117 (6.41%) Kanban
19 114 (6.24%) Web Development
Programming Languages
1 746 (40.85%) Java
2 557 (30.50%) JavaScript
3 393 (21.52%) SQL
4 373 (20.43%) C#
5 248 (13.58%) TypeScript
6 231 (12.65%) Python
7 152 (8.32%) Scala
8 145 (7.94%) Java 8
9 113 (6.19%) Kotlin
10 89 (4.87%) C++
11 74 (4.05%) PowerShell
12 61 (3.34%) ES6
13 47 (2.57%) PHP
14 43 (2.35%) Objective-C
14 43 (2.35%) Ruby
15 39 (2.14%) Apple Swift
16 35 (1.92%) C
17 34 (1.86%) Go
18 31 (1.70%) Bash Shell
19 30 (1.64%) PL/SQL
Qualifications
1 73 (4.00%) Degree
2 66 (3.61%) Security Cleared
3 51 (2.79%) SC Cleared
4 24 (1.31%) Numerate Degree
5 12 (0.66%) Computer Science Degree
6 6 (0.33%) AWS Certification
6 6 (0.33%) ISTQB
7 4 (0.22%) ISEB
8 3 (0.16%) DV Cleared
8 3 (0.16%) Master's Degree
8 3 (0.16%) Sun Certification
9 2 (0.11%) BPSS Clearance
9 2 (0.11%) DBS Check
9 2 (0.11%) Microsoft Certification
9 2 (0.11%) PMI Certification
9 2 (0.11%) Postgraduate
10 1 (0.055%) BC Cleared
10 1 (0.055%) HNC
10 1 (0.055%) ISTQB Foundation Certification
10 1 (0.055%) PhD
Quality Assurance & Compliance
1 158 (8.65%) QA
2 38 (2.08%) Accessibility
3 9 (0.49%) Data Quality
4 8 (0.44%) JTAG
5 7 (0.38%) GDPR
6 5 (0.27%) PMO
6 5 (0.27%) WCAG
7 4 (0.22%) MiFID
8 1 (0.055%) ISO 20022
8 1 (0.055%) PCI DSS
System Software
1 393 (21.52%) Docker
2 34 (1.86%) Active Directory
3 10 (0.55%) Apache ZooKeeper
4 7 (0.38%) Platform Symphony
5 3 (0.16%) HDFS
5 3 (0.16%) Squid
5 3 (0.16%) Varnish
6 2 (0.11%) KVM
7 1 (0.055%) VirtualBox
7 1 (0.055%) VMware Infrastructure
7 1 (0.055%) vSphere
Systems Management
1 301 (16.48%) Kubernetes
2 94 (5.15%) Terraform
3 67 (3.67%) Prometheus
4 65 (3.56%) Grafana
5 48 (2.63%) Ansible
6 16 (0.88%) ZABBIX
7 14 (0.77%) Opscode Chef
8 13 (0.71%) Puppet
9 10 (0.55%) MIIS
10 8 (0.44%) ITRS Geneos
11 6 (0.33%) Kibana
12 5 (0.27%) Rancher
13 4 (0.22%) Single Sign-On
14 3 (0.16%) Oozie
14 3 (0.16%) Packer
15 2 (0.11%) Ambari
15 2 (0.11%) Hadoop YARN
15 2 (0.11%) Istio
16 1 (0.055%) Consul
16 1 (0.055%) HP ALM
Vendors
1 132 (7.23%) Microsoft
2 104 (5.70%) Oracle
3 81 (4.44%) Google
4 54 (2.96%) Splunk
5 32 (1.75%) New Relic
6 31 (1.70%) IBM
7 29 (1.59%) CA Agile Central
8 23 (1.26%) Adobe
9 22 (1.20%) DevExpress
10 21 (1.15%) CA
11 17 (0.93%) Sybase
11 17 (0.93%) TIBCO
12 16 (0.88%) Atlassian
12 16 (0.88%) Spiceworks
13 13 (0.71%) Databricks
13 13 (0.71%) SAP
14 11 (0.60%) AppDynamics
14 11 (0.60%) Murex
15 9 (0.49%) RedGate
15 9 (0.49%) Xamarin