Period
to 25 September 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 25 September 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
25 Sep 2021
Same period 2020 Same period 2019
Rank 32 33 16
Rank change year-on-year +1 -17 -4
Contract jobs citing TDD 2,117 879 3,319
As % of all contract jobs advertised in London 6.26% 6.56% 8.59%
As % of the Processes & Methodologies category 6.87% 7.34% 9.65%
Number of daily rates quoted 1,663 691 2,768
10th Percentile £450 £406 £425
25th Percentile £500 £463 £475
Median daily rate (50th Percentile) £593 £540 £550
Median % change year-on-year +9.72% -1.82% +4.76%
75th Percentile £660 £625 £638
90th Percentile £738 £675 £700
England median daily rate £550 £525 £525
% change year-on-year +4.76% - +5.00%
Number of hourly rates quoted 12 1 1
Median hourly rate £66.29 £54.00 £73.00
Median % change year-on-year +22.75% -26.03% +274.36%
England median hourly rate £65.50 £51.06 £40.37
% change year-on-year +28.29% +26.48% -10.29%

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 30,806 11,975 34,407
As % of all contract IT jobs advertised in London 91.13% 89.37% 89.02%
Number of daily rates quoted 22,156 8,547 25,060
10th Percentile £363 £325 £325
25th Percentile £450 £413 £413
Median daily rate (50th Percentile) £550 £513 £513
Median % change year-on-year +7.32% -0.15% +2.65%
75th Percentile £650 £625 £600
90th Percentile £735 £713 £688
England median daily rate £513 £475 £475
% change year-on-year +7.84% +0.05% +2.70%
Number of hourly rates quoted 292 115 390
10th Percentile £14.38 £13.06 £12.04
25th Percentile £20.62 £19.49 £15.25
Median hourly rate £34.69 £33.50 £22.17
Median % change year-on-year +3.55% +51.14% +8.12%
75th Percentile £52.50 £45.88 £43.75
90th Percentile £66.43 £53.90 £53.00
England median hourly rate £24.27 £26.00 £22.97
% change year-on-year -6.65% +13.22% +17.77%

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 25 September 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
Hourly Rate Histogram in London

Hourly rate distribution of jobs citing TDD in London over the 6 months to 25 September 2021.

Hourly rate histogram 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 25 September 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 +8 373 £613 +11.36% 288
West London +9 72 £610 +16.19% 113
East London +11 32 £500 +8.40% 51
South London -21 22 £550 +10.00% 17
TDD
England

For the 6 months to 25 September 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 1,475 (69.67%) Agile Software Development
2 917 (43.32%) Java
3 761 (35.95%) BDD
4 647 (30.56%) JavaScript
5 597 (28.20%) Microservices
6 542 (25.60%) DevOps
7 516 (24.37%) Git (software)
8 482 (22.77%) Scrum
9 479 (22.63%) AWS
10 465 (21.97%) SQL
11 459 (21.68%) Spring
12 454 (21.45%) Continuous Integration
13 451 (21.30%) Azure
14 434 (20.50%) Docker
15 428 (20.22%) Test Automation
16 425 (20.08%) Software Engineering
17 410 (19.37%) Jenkins
17 410 (19.37%) React
18 379 (17.90%) C#
19 374 (17.67%) Finance
20 365 (17.24%) Kubernetes
21 364 (17.19%) Pair Programming
22 363 (17.15%) .NET
23 338 (15.97%) Social Skills
24 329 (15.54%) HTML
25 321 (15.16%) Banking
26 305 (14.41%) AngularJS
27 298 (14.08%) TypeScript
28 291 (13.75%) Full Stack Development
29 287 (13.56%) CSS

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 80 (3.78%) Confluence
2 53 (2.50%) Apache Spark
3 34 (1.61%) Oracle SOA Suite
4 31 (1.46%) JBoss
5 30 (1.42%) Tomcat
6 27 (1.28%) Elasticsearch
7 24 (1.13%) Apache
8 23 (1.09%) Adobe Experience Manager
8 23 (1.09%) Cloud Foundry
8 23 (1.09%) CMS
8 23 (1.09%) Mule
9 22 (1.04%) Oracle Coherence
10 21 (0.99%) Red Hat Fuse
11 13 (0.61%) WebLogic
12 12 (0.57%) WebSphere
13 10 (0.47%) Jetty
13 10 (0.47%) SharePoint
14 9 (0.43%) nginx
15 8 (0.38%) Apache Airflow
16 7 (0.33%) OpenStack
Applications
1 12 (0.57%) Microsoft Excel
2 9 (0.43%) Photoshop
3 4 (0.19%) Microsoft Office
4 2 (0.094%) Chatbot
4 2 (0.094%) Figma
5 1 (0.047%) Adobe XD
5 1 (0.047%) InDesign
5 1 (0.047%) InVision
5 1 (0.047%) S-PLUS
5 1 (0.047%) Spreadsheet
5 1 (0.047%) Zeplin
Business Applications
1 6 (0.28%) Magento
2 5 (0.24%) SAP S/4HANA
3 4 (0.19%) SAP Hybris
4 3 (0.14%) Adobe Campaign
4 3 (0.14%) IBM Planning Analytics
4 3 (0.14%) SAP BRIM
5 2 (0.094%) Salesforce.com CRM
5 2 (0.094%) Shopify
6 1 (0.047%) BusinessWorks
6 1 (0.047%) Dynamics CRM
6 1 (0.047%) Oracle BPM
6 1 (0.047%) Oracle Subledger Accounting
6 1 (0.047%) Payment Gateway
6 1 (0.047%) RMDS
6 1 (0.047%) SAP Oil and Gas
Cloud Services
1 479 (22.63%) AWS
2 451 (21.30%) Azure
3 159 (7.51%) GCP
4 105 (4.96%) Serverless
5 76 (3.59%) GitHub
6 48 (2.27%) PaaS
7 39 (1.84%) AWS Lambda
8 37 (1.75%) IaaS
9 27 (1.28%) npm
9 27 (1.28%) SaaS
10 25 (1.18%) OpenShift
11 21 (0.99%) AWS CloudFormation
11 21 (0.99%) Azure Active Directory
11 21 (0.99%) Azure Data Factory
12 18 (0.85%) Amazon EC2
12 18 (0.85%) Amazon SQS
12 18 (0.85%) Azure Functions
12 18 (0.85%) Power Platform
13 16 (0.76%) Datadog
14 13 (0.61%) Amazon ECS
Communications & Networking
1 39 (1.84%) HTTP
2 21 (0.99%) RTMP
3 10 (0.47%) Internet
3 10 (0.47%) TCP/IP
4 9 (0.43%) Broadband
5 7 (0.33%) Kerberos
6 5 (0.24%) SSL
7 4 (0.19%) DNS
8 3 (0.14%) UPnP
8 3 (0.14%) Wi-Fi
9 2 (0.094%) 5G
9 2 (0.094%) DLNA
9 2 (0.094%) MQTT
9 2 (0.094%) SMS
10 1 (0.047%) DMARC
10 1 (0.047%) IPv4
10 1 (0.047%) IPv6
10 1 (0.047%) PPP
10 1 (0.047%) SMTP
10 1 (0.047%) VoIP
Database & Business Intelligence
1 194 (9.16%) NoSQL
2 133 (6.28%) Relational Database
3 129 (6.09%) SQL Server
4 93 (4.39%) MongoDB
5 65 (3.07%) MySQL
6 62 (2.93%) Big Data
7 61 (2.88%) PostgreSQL
8 52 (2.46%) Oracle Database
9 41 (1.94%) Hadoop
10 36 (1.70%) Apache Cassandra
11 30 (1.42%) Redis
12 28 (1.32%) Data Warehouse
13 27 (1.28%) Oracle Database 12c
14 25 (1.18%) RDBMS
15 23 (1.09%) BigQuery
15 23 (1.09%) Data Lake
16 22 (1.04%) Amazon DynamoDB
16 22 (1.04%) Hazelcast
17 20 (0.94%) Azure SQL Database
17 20 (0.94%) SQL Server Integration Services
Development Applications
1 516 (24.37%) Git (software)
2 410 (19.37%) Jenkins
3 197 (9.31%) JIRA
4 194 (9.16%) Cucumber
5 155 (7.32%) JUnit
6 136 (6.42%) Maven
7 114 (5.38%) Selenium
8 102 (4.82%) TeamCity
9 96 (4.53%) Mockito
10 80 (3.78%) Gradle
11 65 (3.07%) Jasmine
12 57 (2.69%) Subversion
13 48 (2.27%) Visual Studio
14 44 (2.08%) CircleCI
15 42 (1.98%) IntelliJ
16 41 (1.94%) GitLab
17 40 (1.89%) Gatling
18 39 (1.84%) Octopus Deploy
19 36 (1.70%) Protractor
20 34 (1.61%) Mocha
General
1 374 (17.67%) Finance
2 338 (15.97%) Social Skills
3 321 (15.16%) Banking
4 171 (8.08%) Front Office
5 137 (6.47%) Investment Banking
6 75 (3.54%) Retail
7 63 (2.98%) Public Sector
8 57 (2.69%) Analytical Skills
9 48 (2.27%) Games
9 48 (2.27%) Manufacturing
10 34 (1.61%) Marketing
11 23 (1.09%) Telecoms
12 20 (0.94%) Automotive
13 17 (0.80%) Retail Banking
14 16 (0.76%) Publishing
15 14 (0.66%) Documentation Skills
15 14 (0.66%) Legal
16 12 (0.57%) Back Office
17 10 (0.47%) Electronics
17 10 (0.47%) Influencing Skills
Job Titles
1 1,565 (73.93%) Developer
2 466 (22.01%) Java Developer
3 286 (13.51%) Senior Developer
4 182 (8.60%) C# Developer
5 150 (7.09%) React Developer
6 133 (6.28%) Full Stack Developer
7 121 (5.72%) .NET Developer
8 117 (5.53%) Scala Developer
9 107 (5.05%) JavaScript Developer
10 103 (4.87%) Senior Java Developer
11 101 (4.77%) Software Engineer
12 74 (3.50%) Front End Developer (Client-Side Developer)
13 64 (3.02%) C# .NET Developer
14 58 (2.74%) Java Engineer
15 56 (2.65%) iOS Developer
16 52 (2.46%) Python Developer
17 49 (2.31%) Android Developer
18 47 (2.22%) Backend Developer
19 46 (2.17%) Lead Developer
20 45 (2.13%) Software Developer
Libraries, Frameworks & Software Standards
1 459 (21.68%) Spring
2 410 (19.37%) React
3 363 (17.15%) .NET
4 329 (15.54%) HTML
5 305 (14.41%) AngularJS
6 287 (13.56%) CSS
7 285 (13.46%) RESTful
8 270 (12.75%) Spring Boot
9 268 (12.66%) REST
10 256 (12.09%) Node.js
11 216 (10.20%) Web Services
12 197 (9.31%) Kafka
13 180 (8.50%) HTML5
14 151 (7.13%) Redux
15 119 (5.62%) .NET Core
16 110 (5.20%) GraphQL
17 86 (4.06%) JSON
18 83 (3.92%) XML
19 81 (3.83%) Hibernate
20 77 (3.64%) Jest
Miscellaneous
1 164 (7.75%) Greenfield Project
2 108 (5.10%) User Experience
3 80 (3.78%) Fixed Income
4 76 (3.59%) Mobile App
5 70 (3.31%) Derivative
6 64 (3.02%) Foreign Exchange (FX)
7 54 (2.55%) Algorithms
8 53 (2.50%) Cloud Native
9 51 (2.41%) Data Protection Act
10 48 (2.27%) Self-Motivation
11 43 (2.03%) Data Structures
12 41 (1.94%) Enterprise Software
13 32 (1.51%) Interest Rate Derivative
14 29 (1.37%) Credit Risk
14 29 (1.37%) Video\Live Streaming
15 27 (1.28%) CMDB
16 26 (1.23%) Management Information System
17 21 (0.99%) Hedge funds
18 18 (0.85%) Public Cloud
18 18 (0.85%) Virtual Team
Operating Systems
1 167 (7.89%) Linux
2 123 (5.81%) Unix
3 96 (4.53%) Apple iOS
4 86 (4.06%) Android
5 30 (1.42%) Windows
6 17 (0.80%) Mac OS X
7 10 (0.47%) Windows Server 2016
8 8 (0.38%) Windows Server
9 7 (0.33%) Mac OS
9 7 (0.33%) Red Hat Enterprise Linux
9 7 (0.33%) tvOS
10 5 (0.24%) Debian
10 5 (0.24%) VMS
11 3 (0.14%) CentOS
12 2 (0.094%) Embedded Linux
12 2 (0.094%) OpenWrt
12 2 (0.094%) Ubuntu
12 2 (0.094%) Windows Server 2019
13 1 (0.047%) Tizen
13 1 (0.047%) webOS
Processes & Methodologies
1 1,475 (69.67%) Agile Software Development
2 761 (35.95%) BDD
3 597 (28.20%) Microservices
4 542 (25.60%) DevOps
5 482 (22.77%) Scrum
6 454 (21.45%) Continuous Integration
7 428 (20.22%) Test Automation
8 425 (20.08%) Software Engineering
9 364 (17.19%) Pair Programming
10 291 (13.75%) Full Stack Development
11 246 (11.62%) Unit Testing
12 183 (8.64%) Continuous Improvement
13 176 (8.31%) Problem-Solving
14 172 (8.12%) Continuous Delivery
15 159 (7.51%) MVC
16 155 (7.32%) OO
17 142 (6.71%) Kanban
18 139 (6.57%) SDLC
19 128 (6.05%) Front End Development
20 126 (5.95%) Clean Code
Programming Languages
1 917 (43.32%) Java
2 647 (30.56%) JavaScript
3 465 (21.97%) SQL
4 379 (17.90%) C#
5 298 (14.08%) TypeScript
6 245 (11.57%) Python
7 187 (8.83%) Scala
8 153 (7.23%) Java 8
9 124 (5.86%) Kotlin
10 122 (5.76%) Java 11
11 75 (3.54%) C++
12 61 (2.88%) PHP
13 51 (2.41%) Apple Swift
14 49 (2.31%) Ruby
15 47 (2.22%) Go
16 46 (2.17%) ES6
17 41 (1.94%) PL/SQL
18 35 (1.65%) Bash Shell
19 33 (1.56%) PowerShell
20 29 (1.37%) Objective-C
Qualifications
1 69 (3.26%) Security Cleared
2 60 (2.83%) Degree
3 59 (2.79%) SC Cleared
4 22 (1.04%) Computer Science Degree
5 11 (0.52%) ISTQB
5 11 (0.52%) Numerate Degree
6 9 (0.43%) Sun Certification
7 8 (0.38%) Master's Degree
8 7 (0.33%) AWS Certification
9 6 (0.28%) DBS Check
10 4 (0.19%) ISEB
10 4 (0.19%) OCPJP
11 2 (0.094%) BPSS Clearance
11 2 (0.094%) CTC Cleared
11 2 (0.094%) Microsoft Certification
11 2 (0.094%) PMI Certification
11 2 (0.094%) Postgraduate
12 1 (0.047%) BC Cleared
Quality Assurance & Compliance
1 147 (6.94%) QA
2 54 (2.55%) Accessibility
3 6 (0.28%) GDPR
3 6 (0.28%) WCAG
4 5 (0.24%) Data Quality
4 5 (0.24%) PMO
5 4 (0.19%) MiFID
6 1 (0.047%) IFRS
6 1 (0.047%) JTAG
6 1 (0.047%) PCI DSS
6 1 (0.047%) Sarbanes-Oxley
6 1 (0.047%) Solvency II
System Software
1 434 (20.50%) Docker
2 22 (1.04%) Active Directory
3 5 (0.24%) Apache ZooKeeper
4 3 (0.14%) Platform Symphony
4 3 (0.14%) Squid
4 3 (0.14%) Varnish
5 1 (0.047%) HDFS
5 1 (0.047%) VirtualBox
5 1 (0.047%) VMware Infrastructure
5 1 (0.047%) vSphere
Systems Management
1 365 (17.24%) Kubernetes
2 119 (5.62%) Terraform
3 92 (4.35%) Prometheus
4 84 (3.97%) Grafana
5 75 (3.54%) Ansible
6 18 (0.85%) Puppet
7 16 (0.76%) ZABBIX
8 15 (0.71%) Kibana
9 13 (0.61%) MIIS
9 13 (0.61%) Opscode Chef
10 11 (0.52%) ITRS Geneos
11 5 (0.24%) logstash
12 4 (0.19%) Netcool
12 4 (0.19%) Packer
13 3 (0.14%) Docker Swarm
13 3 (0.14%) Oozie
14 2 (0.094%) Control-M
14 2 (0.094%) Istio
14 2 (0.094%) Rancher
14 2 (0.094%) Single Sign-On
Vendors
1 139 (6.57%) Oracle
2 95 (4.49%) Microsoft
3 69 (3.26%) Google
4 46 (2.17%) Splunk
5 36 (1.70%) CA Agile Central
5 36 (1.70%) New Relic
6 29 (1.37%) Adobe
7 22 (1.04%) CA
7 22 (1.04%) TIBCO
8 21 (0.99%) Sybase
9 19 (0.90%) Databricks
10 18 (0.85%) SAP
11 16 (0.76%) Spiceworks
12 14 (0.66%) DevExpress
13 13 (0.61%) Murex
14 12 (0.57%) hybris
14 12 (0.57%) IBM
15 10 (0.47%) Apple
15 10 (0.47%) Cognos
15 10 (0.47%) Jaspersoft