Period
to 19 January 2022

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 19 January 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)
England > London
6 months to
19 Jan 2022
Same period 2021 Same period 2020
Rank 37 27 19
Rank change year-on-year -10 -8 -5
Contract jobs citing TDD 2,121 1,175 2,363
As % of all contract jobs advertised in London 5.65% 6.73% 7.92%
As % of the Processes & Methodologies category 6.18% 7.54% 8.94%
Number of daily rates quoted 1,643 957 1,979
10th Percentile £451 £400 £414
25th Percentile £513 £463 £475
Median daily rate (50th Percentile) £610 £550 £550
Median % change year-on-year +10.91% - +2.33%
75th Percentile £688 £625 £638
90th Percentile £750 £675 £700
England median daily rate £566 £525 £525
% change year-on-year +7.86% - -
Number of hourly rates quoted 29 4 4
10th Percentile £35.00 £48.60 -
25th Percentile £64.00 £58.50 £44.43
Median hourly rate £71.00 £66.00 £56.09
Median % change year-on-year +7.58% +17.67% +26.51%
75th Percentile £79.50 £68.00 £67.00
90th Percentile £80.75 - £70.60
England median hourly rate £70.95 £58.00 £48.85
% change year-on-year +22.33% +18.73% +8.56%

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 34,332 15,593 26,423
As % of all contract IT jobs advertised in London 91.47% 89.32% 88.54%
Number of daily rates quoted 25,037 11,252 19,262
10th Percentile £381 £323 £319
25th Percentile £463 £413 £413
Median daily rate (50th Percentile) £560 £500 £513
Median % change year-on-year +12.00% -2.44% +0.49%
75th Percentile £675 £602 £600
90th Percentile £750 £700 £688
England median daily rate £525 £475 £475
% change year-on-year +10.53% - -
Number of hourly rates quoted 343 143 320
10th Percentile £16.44 £17.01 £12.44
25th Percentile £21.50 £24.06 £16.50
Median hourly rate £38.50 £32.50 £23.00
Median % change year-on-year +18.46% +41.30% +6.33%
75th Percentile £53.75 £50.94 £45.38
90th Percentile £65.00 £64.80 £53.03
England median hourly rate £25.15 £26.81 £20.92
% change year-on-year -6.19% +28.15% -3.87%

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 19 January 2022.

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 19 January 2022.

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 19 January 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
Central London -7 325 £605 +10.00% 265
West London +12 105 £633 +23.41% 84
South London -16 20 £500 -0.99% 10
East London -8 14 £530 -1.40% 50
North London - 2 £800 - 5
TDD
England

For the 6 months to 19 January 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 London region with a requirement for TDD.

1 1,478 (69.68%) Agile Software Development
2 902 (42.53%) Java
3 829 (39.09%) BDD
4 639 (30.13%) CI/CD
5 637 (30.03%) Microservices
6 631 (29.75%) JavaScript
7 514 (24.23%) Test Automation
8 508 (23.95%) DevOps
9 502 (23.67%) Scrum
10 469 (22.11%) Git (software)
11 440 (20.74%) Docker
11 440 (20.74%) Software Engineering
12 439 (20.70%) Jenkins
13 437 (20.60%) AWS
14 432 (20.37%) Kubernetes
14 432 (20.37%) Finance
15 430 (20.27%) Continuous Integration
16 419 (19.75%) React
17 407 (19.19%) Azure
18 378 (17.82%) SQL
19 371 (17.49%) Pair Programming
20 349 (16.45%) Spring
21 345 (16.27%) C#
22 338 (15.94%) Python
23 335 (15.79%) .NET
24 308 (14.52%) HTML
25 306 (14.43%) REST
26 304 (14.33%) Social Skills
27 300 (14.14%) CSS
28 295 (13.91%) TypeScript

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 77 (3.63%) Confluence
2 73 (3.44%) Apache Spark
3 39 (1.84%) CMS
4 32 (1.51%) Cloud Foundry
5 27 (1.27%) Apache
5 27 (1.27%) Apache Airflow
5 27 (1.27%) Elasticsearch
6 22 (1.04%) Tomcat
7 21 (0.99%) JBoss
8 20 (0.94%) Mule
8 20 (0.94%) nginx
8 20 (0.94%) Red Hat Fuse
9 19 (0.90%) IIS
10 15 (0.71%) Gunicorn
10 15 (0.71%) SharePoint
11 9 (0.42%) Adobe Experience Manager
11 9 (0.42%) Ethereum
12 8 (0.38%) Oracle Coherence
13 7 (0.33%) OpenStack
13 7 (0.33%) WebSphere
Applications
1 9 (0.42%) Microsoft Excel
2 4 (0.19%) Microsoft Office
3 1 (0.047%) Adobe XD
3 1 (0.047%) InDesign
3 1 (0.047%) InVision
Business Applications
1 5 (0.24%) Magento
2 4 (0.19%) Distributed Ledger
2 4 (0.19%) Dynamics CRM
2 4 (0.19%) Primavera
2 4 (0.19%) SAP ERP
2 4 (0.19%) SAP S/4HANA
2 4 (0.19%) Shopify
3 3 (0.14%) SAP BRIM
3 3 (0.14%) SAP Hybris
4 1 (0.047%) Dynamics NAV
4 1 (0.047%) IBM Planning Analytics
4 1 (0.047%) Quorum
4 1 (0.047%) RMDS
4 1 (0.047%) Salesforce.com CRM
Cloud Services
1 437 (20.60%) AWS
2 407 (19.19%) Azure
3 137 (6.46%) GCP
4 92 (4.34%) GitHub
4 92 (4.34%) Serverless
5 53 (2.50%) PaaS
6 47 (2.22%) AWS Lambda
7 41 (1.93%) AWS CloudFormation
8 32 (1.51%) Azure Active Directory
9 30 (1.41%) Amazon SQS
10 29 (1.37%) Azure Service Bus
11 26 (1.23%) IaaS
12 24 (1.13%) OpenShift
13 21 (0.99%) SaaS
14 20 (0.94%) Amazon EC2
15 18 (0.85%) Amazon S3
16 16 (0.75%) Azure Cosmos DB
16 16 (0.75%) NuGet
16 16 (0.75%) Power Platform
17 15 (0.71%) Azure Functions
Communications & Networking
1 68 (3.21%) HTTP
2 26 (1.23%) RTMP
3 22 (1.04%) MQTT
4 10 (0.47%) HTTPS
5 6 (0.28%) Internet
6 4 (0.19%) Firewall
6 4 (0.19%) VPN
7 3 (0.14%) Broadband
7 3 (0.14%) TCP/IP
8 2 (0.094%) 5G
8 2 (0.094%) AMQP
8 2 (0.094%) DNS
8 2 (0.094%) Kerberos
9 1 (0.047%) DECT
9 1 (0.047%) IPv4
9 1 (0.047%) IPv6
9 1 (0.047%) Multicast
9 1 (0.047%) PPP
9 1 (0.047%) SMS
9 1 (0.047%) Wi-Fi
Database & Business Intelligence
1 182 (8.58%) NoSQL
2 166 (7.83%) SQL Server
3 149 (7.02%) Relational Database
4 106 (5.00%) MongoDB
5 101 (4.76%) PostgreSQL
6 69 (3.25%) MySQL
7 65 (3.06%) Big Data
8 38 (1.79%) Oracle Database
9 34 (1.60%) Apache Cassandra
9 34 (1.60%) Hadoop
9 34 (1.60%) RDBMS
10 30 (1.41%) Redis
11 28 (1.32%) HBase
12 26 (1.23%) Amazon DynamoDB
13 24 (1.13%) Azure SQL Database
14 22 (1.04%) Amazon Redshift
15 19 (0.90%) Oracle Database 12c
16 18 (0.85%) Hazelcast
17 17 (0.80%) Couchbase
17 17 (0.80%) Data Lake
Development Applications
1 469 (22.11%) Git (software)
2 439 (20.70%) Jenkins
3 177 (8.35%) JIRA
4 153 (7.21%) Cucumber
5 133 (6.27%) Maven
6 120 (5.66%) Selenium
7 111 (5.23%) JUnit
8 94 (4.43%) Mockito
9 87 (4.10%) TeamCity
10 75 (3.54%) Gradle
11 50 (2.36%) GitLab
12 42 (1.98%) Jasmine
13 38 (1.79%) Gatling
13 38 (1.79%) SonarQube
14 37 (1.74%) Bitbucket
15 32 (1.51%) CircleCI
15 32 (1.51%) SpecFlow
16 31 (1.46%) Subversion
16 31 (1.46%) WebDriver
17 30 (1.41%) Protractor
General
1 432 (20.37%) Finance
2 304 (14.33%) Social Skills
3 261 (12.31%) Banking
4 171 (8.06%) Front Office
5 118 (5.56%) Investment Banking
6 71 (3.35%) Analytical Skills
7 53 (2.50%) Games
8 50 (2.36%) Retail
9 47 (2.22%) Public Sector
10 29 (1.37%) Back Office
11 28 (1.32%) Publishing
12 27 (1.27%) Marketing
13 24 (1.13%) Telecoms
14 20 (0.94%) Manufacturing
15 16 (0.75%) Automotive
16 13 (0.61%) Presentation Skills
17 11 (0.52%) Retail Banking
18 9 (0.42%) Influencing Skills
19 8 (0.38%) Financial Institution
20 7 (0.33%) Electronics
Job Titles
1 1,546 (72.89%) Developer
2 491 (23.15%) Java Developer
3 351 (16.55%) Senior Developer
4 144 (6.79%) .NET Developer
5 142 (6.69%) C# Developer
6 139 (6.55%) Senior Java Developer
7 136 (6.41%) Full Stack Developer
8 119 (5.61%) React Developer
9 108 (5.09%) Python Developer
10 105 (4.95%) Scala Developer
11 101 (4.76%) JavaScript Developer
12 89 (4.20%) Front End Developer (Client-Side Developer)
13 81 (3.82%) Software Engineer
14 66 (3.11%) Java Engineer
15 60 (2.83%) C# .NET Developer
16 52 (2.45%) DevOps Engineer
17 49 (2.31%) Software Developer
18 43 (2.03%) Data Engineer
19 42 (1.98%) Angular Developer
20 40 (1.89%) Senior React Developer
Libraries, Frameworks & Software Standards
1 419 (19.75%) React
2 349 (16.45%) Spring
3 335 (15.79%) .NET
4 308 (14.52%) HTML
5 306 (14.43%) REST
6 300 (14.14%) CSS
7 245 (11.55%) AngularJS
8 238 (11.22%) RESTful
9 233 (10.99%) Node.js
10 232 (10.94%) Spring Boot
11 223 (10.51%) Kafka
12 202 (9.52%) Web Services
13 165 (7.78%) Redux
14 146 (6.88%) HTML5
15 114 (5.37%) .NET Core
16 94 (4.43%) .NET Framework
17 83 (3.91%) JSON
18 74 (3.49%) ASP.NET
19 71 (3.35%) Sass
19 71 (3.35%) Vue.js
Miscellaneous
1 177 (8.35%) Greenfield Project
2 127 (5.99%) User Experience
3 80 (3.77%) Foreign Exchange (FX)
4 66 (3.11%) Cloud Native
5 59 (2.78%) Mobile App
6 57 (2.69%) Derivative
7 52 (2.45%) Hedge funds
8 48 (2.26%) Self-Motivation
9 44 (2.07%) Data Protection Act
9 44 (2.07%) Fixed Income
10 42 (1.98%) Data Structures
11 39 (1.84%) Algorithms
12 37 (1.74%) Enterprise Software
13 36 (1.70%) Video\Live Streaming
14 32 (1.51%) Media Streaming
15 24 (1.13%) Virtual Team
16 21 (0.99%) Client/Server
17 19 (0.90%) Credit Risk
17 19 (0.90%) iPad
18 18 (0.85%) Management Information System
Operating Systems
1 223 (10.51%) Linux
2 165 (7.78%) Unix
3 70 (3.30%) Android
4 69 (3.25%) Apple iOS
5 26 (1.23%) Windows
6 25 (1.18%) Mac OS X
7 12 (0.57%) Red Hat Enterprise Linux
8 7 (0.33%) Mac OS
9 5 (0.24%) tvOS
10 2 (0.094%) MVS
10 2 (0.094%) OpenWrt
10 2 (0.094%) Windows Server
11 1 (0.047%) Debian
11 1 (0.047%) Ubuntu
11 1 (0.047%) VMS
Processes & Methodologies
1 1,478 (69.68%) Agile Software Development
2 829 (39.09%) BDD
3 639 (30.13%) CI/CD
4 637 (30.03%) Microservices
5 514 (24.23%) Test Automation
6 508 (23.95%) DevOps
7 502 (23.67%) Scrum
8 440 (20.74%) Software Engineering
9 430 (20.27%) Continuous Integration
10 371 (17.49%) Pair Programming
11 265 (12.49%) Full Stack Development
12 201 (9.48%) Unit Testing
13 178 (8.39%) Kanban
14 173 (8.16%) Problem-Solving
15 169 (7.97%) OO
16 161 (7.59%) Front End Development
17 158 (7.45%) Continuous Improvement
18 155 (7.31%) SDLC
19 132 (6.22%) Mentoring
20 131 (6.18%) Continuous Delivery
Programming Languages
1 902 (42.53%) Java
2 631 (29.75%) JavaScript
3 378 (17.82%) SQL
4 345 (16.27%) C#
5 338 (15.94%) Python
6 295 (13.91%) TypeScript
7 186 (8.77%) Scala
8 159 (7.50%) Java 8
9 129 (6.08%) Java 11
10 120 (5.66%) Kotlin
11 66 (3.11%) Ruby
12 55 (2.59%) PHP
13 47 (2.22%) Bash
14 40 (1.89%) Apple Swift
15 39 (1.84%) C++
15 39 (1.84%) PL/SQL
16 36 (1.70%) Go
17 32 (1.51%) ES6
17 32 (1.51%) Shell Script
18 30 (1.41%) Groovy
Qualifications
1 75 (3.54%) Security Cleared
2 71 (3.35%) SC Cleared
3 55 (2.59%) Degree
4 23 (1.08%) Computer Science Degree
5 11 (0.52%) AWS Certification
5 11 (0.52%) ISTQB
6 8 (0.38%) Master's Degree
7 7 (0.33%) BPSS Clearance
8 6 (0.28%) Sun Certification
9 4 (0.19%) DBS Check
9 4 (0.19%) ISTQB Foundation Certification
9 4 (0.19%) OCPJP
10 3 (0.14%) ISEB
10 3 (0.14%) Numerate Degree
11 2 (0.094%) ISTQB Advanced Certification
12 1 (0.047%) ITIL Certification
12 1 (0.047%) Microsoft Certification
12 1 (0.047%) PMI Certification
Quality Assurance & Compliance
1 106 (5.00%) QA
2 50 (2.36%) Accessibility
3 4 (0.19%) Data Quality
3 4 (0.19%) WCAG
4 3 (0.14%) GDPR
5 2 (0.094%) MiFID
5 2 (0.094%) PMO
5 2 (0.094%) SLA
6 1 (0.047%) Disclosure Scotland
6 1 (0.047%) IFRS
6 1 (0.047%) JTAG
6 1 (0.047%) Sarbanes-Oxley
6 1 (0.047%) Solvency II
System Software
1 440 (20.74%) Docker
2 33 (1.56%) Active Directory
3 5 (0.24%) Apache ZooKeeper
4 4 (0.19%) Virtual Desktop
5 2 (0.094%) Postfix
5 2 (0.094%) Virtual Machines
6 1 (0.047%) Apache Flume
6 1 (0.047%) HDFS
Systems Management
1 432 (20.37%) Kubernetes
2 163 (7.69%) Terraform
3 77 (3.63%) Prometheus
4 76 (3.58%) Grafana
5 70 (3.30%) Ansible
6 38 (1.79%) Puppet
7 17 (0.80%) Kibana
8 16 (0.75%) Netcool
9 11 (0.52%) logstash
10 9 (0.42%) Istio
11 7 (0.33%) Opscode Chef
12 4 (0.19%) Docker Swarm
13 3 (0.14%) ITRS Geneos
14 1 (0.047%) Business Desktop Deployment
14 1 (0.047%) Control-M
14 1 (0.047%) IBM Cloud Orchestrator
14 1 (0.047%) Mesos
14 1 (0.047%) MIIS
14 1 (0.047%) Oozie
14 1 (0.047%) Packer
Vendors
1 128 (6.03%) Oracle
2 112 (5.28%) Microsoft
3 33 (1.56%) Google
4 30 (1.41%) Databricks
5 28 (1.32%) Salesforce.com
6 26 (1.23%) Splunk
7 23 (1.08%) Hortonworks
8 20 (0.94%) SAP
9 18 (0.85%) AppDynamics
9 18 (0.85%) CA Agile Central
10 17 (0.80%) Sybase
11 16 (0.75%) New Relic
12 15 (0.71%) MuleSoft
13 13 (0.61%) Adobe
14 12 (0.57%) CA
14 12 (0.57%) Red Hat
15 11 (0.52%) Apple
16 10 (0.47%) hybris
17 8 (0.38%) Zend
18 7 (0.33%) Murex