Period
to 14 December 2019

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 December 2019 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 Dec 2019
Same period 2018 Same period 2017
Rank 15 11 9
Rank change year-on-year -4 -2 +7
Contract jobs citing TDD 2,728 4,748 4,681
As % of all contract IT jobs advertised in London 8.12% 10.14% 9.85%
As % of the Processes & Methodologies category 9.27% 11.48% 11.15%
Number of daily rates quoted 2,280 3,941 3,920
London median daily rate £550 £525 £513
Median daily rate % change year-on-year +4.76% +2.44% +5.13%
10th Percentile £420 £413 £400
90th Percentile £710 £675 £638
England median daily rate £525 £513 £500
% change year-on-year +2.44% +2.50% +8.11%
Number of hourly rates quoted 6 4 1
London median hourly rate £56.09 £35.00 £39.29
Median hourly rate % change year-on-year +60.26% -10.92% -15.05%
England median hourly rate £47.50 £45.00 £45.00
% change year-on-year +5.56% - +5.88%

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 29,424 41,341 41,998
As % of all contract IT jobs advertised in London 87.61% 88.29% 88.37%
Number of daily rates quoted 21,059 29,822 30,529
London median daily rate £513 £501 £500
Median daily rate % change year-on-year +2.40% +0.10% +5.26%
10th Percentile £325 £325 £313
90th Percentile £688 £675 £675
England median daily rate £475 £475 £450
% change year-on-year - +5.56% +5.45%
Number of hourly rates quoted 406 464 391
London median hourly rate £24.58 £24.08 £22.50
Median hourly rate % change year-on-year +2.08% +7.02% +2.27%
10th Percentile £12.44 £13.18 £13.30
90th Percentile £53.75 £54.46 £48.75
England median hourly rate £23.50 £22.20 £25.00
% change year-on-year +5.88% -11.22% +9.06%

TDD
Job Vacancy Trend in London

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

Job vacancy trend for TDD in London

TDD
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in London.

Contractor daily rate trend for TDD in London

TDD
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing TDD in London over the 6 months to 14 December 2019.

Contractor daily rate histogram for TDD in London

TDD
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in London.

Contractor hourly rate trend for TDD in London

TDD
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing TDD in London over the 6 months to 14 December 2019.

Contractor 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 14 December 2019. 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 -5 658 £550 +4.76% 296
South London +13 122 £488 -7.14% 30
West London -8 111 £525 - 126
East London -1 72 £550 - 35
North London 0 3 £525 +16.67% 7
TDD
England

For the 6 months to 14 December 2019, 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 1,922 (70.45%) Agile Software Development
2 1,021 (37.43%) JavaScript
3 1,002 (36.73%) BDD
4 960 (35.19%) Java
5 673 (24.67%) C#
6 651 (23.86%) Microservices
7 627 (22.98%) Continuous Integration
8 620 (22.73%) React
9 611 (22.40%) .NET
10 606 (22.21%) HTML
11 582 (21.33%) CSS
12 569 (20.86%) Scrum
13 565 (20.71%) AngularJS
14 544 (19.94%) Finance
15 520 (19.06%) SQL
16 510 (18.70%) DevOps
17 502 (18.40%) AWS
18 493 (18.07%) Git (software)
19 411 (15.07%) Test Automation
20 405 (14.85%) Azure
20 405 (14.85%) Python
21 401 (14.70%) Node.js
22 399 (14.63%) Spring
23 382 (14.00%) Docker
24 378 (13.86%) REST
25 371 (13.60%) Jenkins
26 340 (12.46%) SQL Server
26 340 (12.46%) Pair Programming
27 336 (12.32%) RESTful
28 331 (12.13%) Banking

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
1 135 (4.95%) Elasticsearch
2 76 (2.79%) Apache Spark
3 68 (2.49%) Confluence
4 65 (2.38%) Apache
5 36 (1.32%) CMS
6 31 (1.14%) Tomcat
7 20 (0.73%) Jetty
8 19 (0.70%) JBoss
9 18 (0.66%) IIS
10 17 (0.62%) Cloud Foundry
10 17 (0.62%) SharePoint
11 16 (0.59%) Umbraco
12 9 (0.33%) Adobe Experience Manager
12 9 (0.33%) Apache Solr
12 9 (0.33%) Kentico
12 9 (0.33%) Sitecore CMS
13 8 (0.29%) Mattermost
14 7 (0.26%) Magnolia
15 6 (0.22%) EPiServer
15 6 (0.22%) Jupyter
Applications
1 16 (0.59%) Microsoft Excel
2 5 (0.18%) Chatbot
2 5 (0.18%) Photoshop
3 3 (0.11%) Adobe Illustrator
4 2 (0.073%) Sketch
5 1 (0.037%) MS Visio
5 1 (0.037%) OmniGraffle
5 1 (0.037%) Spreadsheet
5 1 (0.037%) Zeplin
Business Applications
1 8 (0.29%) BusinessWorks
1 8 (0.29%) Dynamics CRM
2 4 (0.15%) FINCAD Analytics
2 4 (0.15%) Magento
3 2 (0.073%) Oracle BPM
3 2 (0.073%) R3 Corda
3 2 (0.073%) Shopify
4 1 (0.037%) Actimize
4 1 (0.037%) Distributed Ledger
4 1 (0.037%) FastStats
4 1 (0.037%) ION MarketView
4 1 (0.037%) Oracle Financials
4 1 (0.037%) Oracle Retail
4 1 (0.037%) PeopleSoft Financials
4 1 (0.037%) Remedy ITSM
4 1 (0.037%) SAP Hybris
4 1 (0.037%) Sparx Enterprise Architect
Cloud Services
1 502 (18.40%) AWS
2 405 (14.85%) Azure
3 116 (4.25%) GCP
4 101 (3.70%) GitHub
5 100 (3.67%) Serverless
6 53 (1.94%) Power Platform
7 52 (1.91%) AWS Lambda
8 41 (1.50%) Amazon EC2
9 33 (1.21%) npm
9 33 (1.21%) PaaS
10 31 (1.14%) OpenShift
11 24 (0.88%) Cloud Computing
12 19 (0.70%) Amazon SQS
13 16 (0.59%) Amazon ECS
14 15 (0.55%) Amazon S3
15 12 (0.44%) IaaS
16 10 (0.37%) AWS CloudFormation
17 9 (0.33%) Heroku
18 8 (0.29%) Firebase
18 8 (0.29%) SaaS
Communications & Networking
1 80 (2.93%) HTTP
2 44 (1.61%) Internet
3 31 (1.14%) TCP/IP
4 19 (0.70%) DNS
5 16 (0.59%) AMQP
6 13 (0.48%) FTP
7 11 (0.40%) SSL
8 9 (0.33%) HTTPS
8 9 (0.33%) SSH
9 7 (0.26%) Firewall
10 6 (0.22%) Multicast
11 4 (0.15%) Kerberos
11 4 (0.15%) Skype
12 3 (0.11%) Network Security
12 3 (0.11%) PuTTY
12 3 (0.11%) RTMP
12 3 (0.11%) SMTP
12 3 (0.11%) Wi-Fi
13 2 (0.073%) UPnP
13 2 (0.073%) xDSL
Database & Business Intelligence
1 340 (12.46%) SQL Server
2 225 (8.25%) NoSQL
3 190 (6.96%) PostgreSQL
4 151 (5.54%) MongoDB
5 138 (5.06%) Relational Database
6 130 (4.77%) MySQL
7 101 (3.70%) Big Data
8 69 (2.53%) Redis
9 65 (2.38%) Hadoop
10 59 (2.16%) Apache Cassandra
11 53 (1.94%) Amazon DynamoDB
11 53 (1.94%) Power BI
12 48 (1.76%) Data Warehouse
13 46 (1.69%) SQL Server Analysis Services
14 44 (1.61%) Cosmos DB
15 34 (1.25%) QlikView
16 32 (1.17%) Flink
16 32 (1.17%) RDBMS
17 31 (1.14%) SQL Server Integration Services
18 30 (1.10%) HBase
Development Applications
1 493 (18.07%) Git (software)
2 371 (13.60%) Jenkins
3 175 (6.41%) JIRA
4 151 (5.54%) JUnit
5 148 (5.43%) TeamCity
6 132 (4.84%) Maven
7 128 (4.69%) Selenium
8 101 (3.70%) Cucumber
9 82 (3.01%) Team Foundation Server
10 80 (2.93%) Mockito
11 78 (2.86%) Octopus Deploy
12 76 (2.79%) Gradle
12 76 (2.79%) Visual Studio
13 75 (2.75%) webpack
14 61 (2.24%) NUnit
15 58 (2.13%) gulp
16 52 (1.91%) Visual Studio Team System
17 48 (1.76%) Mocha
17 48 (1.76%) SonarQube
18 45 (1.65%) Moq
General
1 544 (19.94%) Finance
2 331 (12.13%) Banking
3 204 (7.48%) Front Office
4 105 (3.85%) Investment Banking
5 86 (3.15%) Marketing
6 85 (3.12%) Retail
7 53 (1.94%) Public Sector
8 32 (1.17%) Law
9 27 (0.99%) Games
10 25 (0.92%) Retail Banking
11 23 (0.84%) Advertising
12 21 (0.77%) Publishing
13 20 (0.73%) Telecoms
14 17 (0.62%) Military
15 15 (0.55%) Financial Institution
16 13 (0.48%) Legal
17 7 (0.26%) Electronics
17 7 (0.26%) Manufacturing
17 7 (0.26%) Police
18 4 (0.15%) Back Office
Job Titles
1 2,158 (79.11%) Developer
2 527 (19.32%) Java Developer
3 357 (13.09%) Senior Developer
4 354 (12.98%) React Developer
5 298 (10.92%) C# Developer
6 290 (10.63%) .NET Developer
7 255 (9.35%) Full Stack Developer
8 179 (6.56%) Python Developer
9 177 (6.49%) JavaScript Developer
10 166 (6.09%) Front End Developer (Client-Side Developer)
11 125 (4.58%) Angular Developer
12 111 (4.07%) Senior Java Developer
13 108 (3.96%) Agile Developer
14 107 (3.92%) C# .NET Developer
15 106 (3.89%) AWS Developer
16 99 (3.63%) Scala Developer
17 78 (2.86%) Agile Java Developer
18 77 (2.82%) Software Engineer
19 75 (2.75%) Architect
20 74 (2.71%) Node.js Developer
Libraries, Frameworks & Software Standards
1 620 (22.73%) React
2 611 (22.40%) .NET
3 606 (22.21%) HTML
4 582 (21.33%) CSS
5 565 (20.71%) AngularJS
6 401 (14.70%) Node.js
7 399 (14.63%) Spring
8 378 (13.86%) REST
9 336 (12.32%) RESTful
10 285 (10.45%) Kafka
11 273 (10.01%) Web Services
12 251 (9.20%) Redux
13 231 (8.47%) Spring Boot
14 228 (8.36%) HTML5
15 194 (7.11%) ASP.NET
16 174 (6.38%) .NET Core
17 148 (5.43%) SOAP
18 147 (5.39%) ASP.NET Web API
19 136 (4.99%) JSON
20 133 (4.88%) CSS3
Miscellaneous
1 255 (9.35%) Greenfield Project
2 174 (6.38%) User Experience
3 162 (5.94%) Analytical Skills
4 92 (3.37%) Algorithms
5 91 (3.34%) Hedge funds
6 87 (3.19%) Mobile App
7 85 (3.12%) Equities
8 81 (2.97%) Foreign Exchange (FX)
9 79 (2.90%) Derivative
10 57 (2.09%) Enterprise Software
11 54 (1.98%) Data Structures
12 38 (1.39%) Fixed Income
13 26 (0.95%) Video\Live Streaming
14 24 (0.88%) Public Cloud
15 22 (0.81%) Equity Derivative
15 22 (0.81%) Video on Demand
16 21 (0.77%) Animation
17 19 (0.70%) Data Centre
17 19 (0.70%) Linux Command Line
18 17 (0.62%) Self-Motivation
Operating Systems
1 198 (7.26%) Linux
2 111 (4.07%) Unix
3 107 (3.92%) Apple iOS
4 99 (3.63%) Android
5 56 (2.05%) Windows
6 20 (0.73%) tvOS
7 16 (0.59%) Mac OS X
8 15 (0.55%) AIX
9 13 (0.48%) Mac OS
10 9 (0.33%) Red Hat Enterprise Linux
11 8 (0.29%) Embedded Linux
12 7 (0.26%) Ubuntu
13 4 (0.15%) CentOS
13 4 (0.15%) Debian
14 3 (0.11%) Solaris
15 2 (0.073%) Windows Server
16 1 (0.037%) SUSE Linux Enterprise Server
Processes & Methodologies
1 1,922 (70.45%) Agile Software Development
2 1,002 (36.73%) BDD
3 651 (23.86%) Microservices
4 627 (22.98%) Continuous Integration
5 569 (20.86%) Scrum
6 510 (18.70%) DevOps
7 411 (15.07%) Test Automation
8 340 (12.46%) Pair Programming
9 320 (11.73%) OO
10 301 (11.03%) Front End Development
11 297 (10.89%) Software Engineering
12 270 (9.90%) MVC
13 263 (9.64%) Unit Testing
14 250 (9.16%) Kanban
15 200 (7.33%) Continuous Delivery
16 192 (7.04%) E-Commerce
17 190 (6.96%) SOLID
18 178 (6.52%) Fintech
18 178 (6.52%) Web Development
19 156 (5.72%) OOP
Programming Languages
1 1,021 (37.43%) JavaScript
2 960 (35.19%) Java
3 673 (24.67%) C#
4 520 (19.06%) SQL
5 405 (14.85%) Python
6 261 (9.57%) Java 8
7 196 (7.18%) TypeScript
8 185 (6.78%) Scala
9 183 (6.71%) Ruby
10 165 (6.05%) ES6
11 101 (3.70%) Kotlin
12 77 (2.82%) C++
13 69 (2.53%) PHP
14 67 (2.46%) Go
15 56 (2.05%) PowerShell
16 54 (1.98%) Apple Swift
17 51 (1.87%) C
18 43 (1.58%) T-SQL
19 35 (1.28%) Bash Shell
20 31 (1.14%) Objective-C
Qualifications
1 137 (5.02%) Security Cleared
2 128 (4.69%) Degree
3 101 (3.70%) SC Cleared
4 28 (1.03%) Computer Science Degree
5 21 (0.77%) DV Cleared
6 17 (0.62%) Master's Degree
7 15 (0.55%) BPSS Clearance
8 12 (0.44%) ISTQB
9 11 (0.40%) BC Cleared
10 7 (0.26%) DBS Check
11 5 (0.18%) ISEB
12 2 (0.073%) CTC Cleared
12 2 (0.073%) Microsoft Certification
12 2 (0.073%) PhD
13 1 (0.037%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 126 (4.62%) QA
2 20 (0.73%) WCAG
3 8 (0.29%) PCI DSS
4 7 (0.26%) Data Quality
4 7 (0.26%) GDPR
4 7 (0.26%) MiFID
5 4 (0.15%) EMIR
5 4 (0.15%) ISO/IEC 27001
6 3 (0.11%) Disclosure Scotland
7 1 (0.037%) Dodd-Frank
System Software
1 382 (14.00%) Docker
2 23 (0.84%) VMware Infrastructure
3 19 (0.70%) vSphere
4 15 (0.55%) Active Directory
4 15 (0.55%) Tivoli Workload Scheduler
5 11 (0.40%) HDFS
6 7 (0.26%) Postfix
7 3 (0.11%) Microsoft App-V
7 3 (0.11%) Varnish
7 3 (0.11%) Virtual Servers
8 2 (0.073%) Apache ZooKeeper
8 2 (0.073%) BusyBox
Systems Management
1 230 (8.43%) Kubernetes
2 98 (3.59%) Terraform
3 86 (3.15%) Ansible
4 24 (0.88%) Puppet
5 18 (0.66%) Opscode Chef
6 15 (0.55%) MIIS
6 15 (0.55%) Tivoli
7 13 (0.48%) Grafana
8 10 (0.37%) Control-M
8 10 (0.37%) Docker Swarm
9 9 (0.33%) ITRS Geneos
9 9 (0.33%) Kibana
9 9 (0.33%) Mesos
9 9 (0.33%) Prometheus
10 8 (0.29%) Hadoop YARN
11 7 (0.26%) Cobbler
11 7 (0.26%) logstash
12 6 (0.22%) Salt
13 5 (0.18%) Marathon
14 4 (0.15%) Consul
Vendors
1 227 (8.32%) Microsoft
2 108 (3.96%) Google
3 104 (3.81%) Oracle
4 47 (1.72%) Tableau
5 39 (1.43%) Apple
6 32 (1.17%) Remedy
7 31 (1.14%) Salesforce.com
8 29 (1.06%) Cognos
9 28 (1.03%) MicroStrategy
10 27 (0.99%) VMware
11 23 (0.84%) IBM
12 20 (0.73%) Atlassian
13 19 (0.70%) MuleSoft
14 16 (0.59%) SAP
14 16 (0.59%) Splunk
15 15 (0.55%) Adobe
16 11 (0.40%) Roku
16 11 (0.40%) Sitecore
17 10 (0.37%) TIBCO
18 9 (0.33%) BMC