Period
to 27 September 2020

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 27 September 2020 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
27 Sep 2020
Same period 2019 Same period 2018
Rank 31 15 11
Rank change year-on-year -16 -4 -1
Contract jobs citing TDD 864 3,312 4,622
As % of all contract jobs advertised in London 6.55% 8.64% 10.08%
As % of the Processes & Methodologies category 7.39% 9.77% 11.40%
Number of daily rates quoted 696 2,806 3,842
Median daily rate £533 £550 £525
Median daily rate % change year-on-year -3.18% +4.76% +5.00%
10th Percentile £400 £425 £413
90th Percentile £675 £700 £675
England median daily rate £520 £525 £500
% change year-on-year -0.95% +5.00% +5.26%
Number of hourly rates quoted 4 1 3
Median hourly rate £35.00 £73.00 £19.50
Median hourly rate % change year-on-year -52.05% +274.36% -40.00%
England median hourly rate £35.00 £38.74 £45.00
% change year-on-year -9.64% -13.92% +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 11,689 33,891 40,544
As % of all contract IT jobs advertised in London 88.60% 88.38% 88.45%
Number of daily rates quoted 7,854 24,252 29,386
Median daily rate £513 £513 £500
Median daily rate % change year-on-year - +2.50% -
10th Percentile £325 £325 £325
90th Percentile £715 £688 £675
England median daily rate £475 £475 £468
% change year-on-year - +1.60% +3.89%
Number of hourly rates quoted 165 419 478
Median hourly rate £35.00 £23.00 £22.46
Median hourly rate % change year-on-year +52.17% +2.40% -2.35%
10th Percentile £17.10 £12.44 £14.00
90th Percentile £49.20 £53.75 £55.55
Median hourly rate £35.00 £25.00 £21.00
% change year-on-year +40.00% +19.05% -12.50%

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 27 September 2020.

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 27 September 2020. 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 -10 146 £550 - 162
South London +5 56 £503 +5.79% 8
West London +5 34 £525 - 57
East London -7 6 £455 -17.27% 18
North London +14 3 £375 -25.00% 6
TDD
England

For the 6 months to 27 September 2020, 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.

1 611 (70.72%) Agile Software Development
2 418 (48.38%) Java
3 357 (41.32%) BDD
4 256 (29.63%) Microservices
5 243 (28.13%) DevOps
6 237 (27.43%) JavaScript
7 229 (26.50%) AWS
8 224 (25.93%) Azure
9 207 (23.96%) Test Automation
10 191 (22.11%) Docker
11 187 (21.64%) Git (software)
12 176 (20.37%) Finance
13 171 (19.79%) Scrum
14 162 (18.75%) React
15 161 (18.63%) Spring
16 160 (18.52%) HTML
17 152 (17.59%) Kubernetes
18 150 (17.36%) Banking
19 149 (17.25%) C#
19 149 (17.25%) .NET
19 149 (17.25%) Continuous Integration
20 147 (17.01%) AngularJS
21 146 (16.90%) SQL
22 134 (15.51%) Security Cleared
23 131 (15.16%) Linux
23 131 (15.16%) Software Engineering
24 129 (14.93%) Jenkins
25 124 (14.35%) CSS
26 123 (14.24%) Java 8
27 121 (14.00%) Python

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 48 (5.56%) Confluence
2 38 (4.40%) Elasticsearch
3 25 (2.89%) Apache Spark
4 23 (2.66%) JBoss
5 17 (1.97%) Red Hat Fuse
6 13 (1.50%) Apache Solr
7 11 (1.27%) WebLogic
8 10 (1.16%) Mule
9 8 (0.93%) CMS
10 6 (0.69%) Tomcat
11 5 (0.58%) Jetty
11 5 (0.58%) MQSeries
11 5 (0.58%) Oracle Self-Service HR
11 5 (0.58%) SharePoint
12 4 (0.46%) BizTalk Server
12 4 (0.46%) Oracle SOA Suite
13 3 (0.35%) Apache
13 3 (0.35%) IIS
13 3 (0.35%) OpenStack
13 3 (0.35%) SAS
Applications
1 11 (1.27%) Microsoft Excel
2 2 (0.23%) Photoshop
3 1 (0.12%) 3ds Max
3 1 (0.12%) Blender
3 1 (0.12%) Maya
3 1 (0.12%) Microsoft Office
Business Applications
1 5 (0.58%) Sparx Enterprise Architect
2 4 (0.46%) Salesforce.com CRM
3 1 (0.12%) FINCAD Analytics
3 1 (0.12%) ION MarketView
3 1 (0.12%) Magento
3 1 (0.12%) Payment Gateway
3 1 (0.12%) RMDS
Cloud Services
1 229 (26.50%) AWS
2 224 (25.93%) Azure
3 42 (4.86%) GCP
4 29 (3.36%) Serverless
5 26 (3.01%) GitHub
6 15 (1.74%) OpenShift
7 14 (1.62%) Amazon EC2
7 14 (1.62%) Amazon ECS
7 14 (1.62%) AWS Lambda
7 14 (1.62%) PaaS
8 13 (1.50%) Amazon S3
8 13 (1.50%) Logic Apps
9 12 (1.39%) SaaS
10 11 (1.27%) Cloud Computing
11 10 (1.16%) BlazeMeter
11 10 (1.16%) Power Platform
12 8 (0.93%) IaaS
13 7 (0.81%) AWS Fargate
14 6 (0.69%) Amazon SQS
14 6 (0.69%) AWS CloudFormation
Communications & Networking
1 17 (1.97%) HTTP
2 6 (0.69%) Internet
2 6 (0.69%) TCP/IP
3 5 (0.58%) FIX Connectivity
3 5 (0.58%) Skype
3 5 (0.58%) SSH
4 4 (0.46%) SSL
5 3 (0.35%) DNS
6 2 (0.23%) AMQP
6 2 (0.23%) DHCP
6 2 (0.23%) DVB
6 2 (0.23%) SNMP
7 1 (0.12%) FTP
7 1 (0.12%) Intrusion Detection
7 1 (0.12%) PuTTY
7 1 (0.12%) RTMP
7 1 (0.12%) WAN
Database & Business Intelligence
1 98 (11.34%) MongoDB
2 94 (10.88%) SQL Server
3 59 (6.83%) NoSQL
4 44 (5.09%) Relational Database
5 42 (4.86%) PostgreSQL
6 36 (4.17%) MySQL
7 28 (3.24%) Hadoop
8 24 (2.78%) Big Data
9 15 (1.74%) Cosmos DB
10 14 (1.62%) Apache Cassandra
11 11 (1.27%) Amazon RDS
12 9 (1.04%) Azure SQL Database
13 8 (0.93%) Hazelcast
13 8 (0.93%) KDB
13 8 (0.93%) Redis
14 7 (0.81%) Data Warehouse
14 7 (0.81%) SQL Server Integration Services
15 6 (0.69%) OLTP
15 6 (0.69%) Oracle Database
15 6 (0.69%) SQL Server 2017
Development Applications
1 187 (21.64%) Git (software)
2 129 (14.93%) Jenkins
3 93 (10.76%) JIRA
4 81 (9.38%) Maven
5 80 (9.26%) Cucumber
6 65 (7.52%) Selenium
7 64 (7.41%) JUnit
8 55 (6.37%) Subversion
9 50 (5.79%) Jasmine
10 35 (4.05%) GitLab
10 35 (4.05%) Mockito
11 29 (3.36%) Grunt
12 27 (3.13%) Atlassian Bamboo
12 27 (3.13%) gulp
12 27 (3.13%) Mocha
13 24 (2.78%) TeamCity
14 20 (2.31%) Gradle
15 18 (2.08%) JMeter
15 18 (2.08%) Octopus Deploy
15 18 (2.08%) WebDriver
General
1 176 (20.37%) Finance
2 150 (17.36%) Banking
3 96 (11.11%) Front Office
4 82 (9.49%) Investment Banking
5 77 (8.91%) Public Sector
6 14 (1.62%) Games
7 12 (1.39%) Marketing
8 9 (1.04%) Advertising
8 9 (1.04%) Financial Institution
9 8 (0.93%) Retail
10 7 (0.81%) Law
10 7 (0.81%) Manufacturing
10 7 (0.81%) Telecoms
11 6 (0.69%) Electronics
11 6 (0.69%) Social Housing
12 4 (0.46%) Police
13 3 (0.35%) Back Office
14 2 (0.23%) Automotive
14 2 (0.23%) Retail Banking
15 1 (0.12%) Private Banking
Job Titles
1 604 (69.91%) Developer
2 207 (23.96%) Java Developer
3 94 (10.88%) Senior Developer
4 81 (9.38%) React Developer
5 67 (7.75%) C# Developer
6 66 (7.64%) .NET Developer
7 61 (7.06%) JavaScript Developer
8 54 (6.25%) Full Stack Developer
9 42 (4.86%) Senior Java Developer
10 41 (4.75%) Front End Developer (Client-Side Developer)
11 38 (4.40%) AWS Engineer
11 38 (4.40%) Azure Developer
11 38 (4.40%) Java Engineer
12 37 (4.28%) Python Developer
13 36 (4.17%) Architect
14 32 (3.70%) AWS Developer
15 31 (3.59%) HTML Developer
16 30 (3.47%) Angular Developer
17 27 (3.13%) ASP.NET Developer
17 27 (3.13%) DevOps Engineer
Libraries, Frameworks & Software Standards
1 162 (18.75%) React
2 161 (18.63%) Spring
3 160 (18.52%) HTML
4 149 (17.25%) .NET
5 147 (17.01%) AngularJS
6 124 (14.35%) CSS
7 109 (12.62%) HTML5
7 109 (12.62%) REST
8 108 (12.50%) Node.js
9 102 (11.81%) Web Services
10 96 (11.11%) RESTful
11 72 (8.33%) Spring Boot
12 58 (6.71%) ASP.NET
13 46 (5.32%) Redux
14 45 (5.21%) ASP.NET Core
15 44 (5.09%) CSS3
15 44 (5.09%) Kafka
16 42 (4.86%) .NET Core
17 38 (4.40%) Hibernate
18 36 (4.17%) JMS
Miscellaneous
1 75 (8.68%) User Experience
2 58 (6.71%) Fixed Income
3 51 (5.90%) Greenfield Project
4 40 (4.63%) Analytical Skills
5 34 (3.94%) Derivative
6 27 (3.13%) Algorithms
7 20 (2.31%) Equities
8 18 (2.08%) Cloud Native
8 18 (2.08%) Mobile App
9 16 (1.85%) Foreign Exchange (FX)
10 14 (1.62%) Data Structures
11 12 (1.39%) Credit Risk
11 12 (1.39%) Data Centre
11 12 (1.39%) Public Cloud
11 12 (1.39%) Self-Motivation
12 10 (1.16%) Video on Demand
13 9 (1.04%) Client/Server
13 9 (1.04%) Management Information System
14 7 (0.81%) Hedge funds
14 7 (0.81%) Video\Live Streaming
Operating Systems
1 131 (15.16%) Linux
2 83 (9.61%) Unix
3 43 (4.98%) Mac OS X
4 31 (3.59%) Apple iOS
5 28 (3.24%) Android
6 16 (1.85%) Windows
7 5 (0.58%) CentOS
7 5 (0.58%) Debian
7 5 (0.58%) Red Hat Enterprise Linux
7 5 (0.58%) tvOS
7 5 (0.58%) Ubuntu
8 4 (0.46%) Mac OS
9 1 (0.12%) Embedded Linux
Processes & Methodologies
1 611 (70.72%) Agile Software Development
2 357 (41.32%) BDD
3 256 (29.63%) Microservices
4 243 (28.13%) DevOps
5 207 (23.96%) Test Automation
6 171 (19.79%) Scrum
7 149 (17.25%) Continuous Integration
8 131 (15.16%) Software Engineering
9 113 (13.08%) Pair Programming
10 97 (11.23%) OO
11 83 (9.61%) Problem-Solving
12 71 (8.22%) Kanban
13 70 (8.10%) SDLC
14 64 (7.41%) MVC
15 61 (7.06%) Continuous Delivery
15 61 (7.06%) Responsive Web Design
16 58 (6.71%) Continuous Deployment
16 58 (6.71%) Front End Development
16 58 (6.71%) Multithreading
17 52 (6.02%) Open Source
Programming Languages
1 418 (48.38%) Java
2 237 (27.43%) JavaScript
3 149 (17.25%) C#
4 146 (16.90%) SQL
5 123 (14.24%) Java 8
6 121 (14.00%) Python
7 64 (7.41%) Scala
8 45 (5.21%) TypeScript
9 42 (4.86%) Kotlin
10 39 (4.51%) C++
11 26 (3.01%) PHP
12 25 (2.89%) Ruby
13 20 (2.31%) Shell Script
14 19 (2.20%) ES6
14 19 (2.20%) T-SQL
15 13 (1.50%) Apple Swift
15 13 (1.50%) Perl
16 12 (1.39%) R
17 11 (1.27%) C
17 11 (1.27%) Go
Qualifications
1 134 (15.51%) Security Cleared
2 95 (11.00%) SC Cleared
3 36 (4.17%) Degree
4 15 (1.74%) Computer Science Degree
5 13 (1.50%) DV Cleared
6 12 (1.39%) BPSS Clearance
7 10 (1.16%) DBS Check
7 10 (1.16%) Numerate Degree
8 6 (0.69%) Master's Degree
9 5 (0.58%) ISEB
10 3 (0.35%) ISTQB
11 2 (0.23%) AWS Certification
12 1 (0.12%) ISTQB Advanced Certification
Quality Assurance & Compliance
1 64 (7.41%) QA
2 17 (1.97%) WCAG
3 5 (0.58%) Data Quality
4 4 (0.46%) PMO
5 2 (0.23%) GDPR
5 2 (0.23%) MiFID
6 1 (0.12%) Disclosure Scotland
6 1 (0.12%) EMIR
System Software
1 191 (22.11%) Docker
2 3 (0.35%) Veritas Cluster Server
3 2 (0.23%) Apache ZooKeeper
3 2 (0.23%) Postfix
4 1 (0.12%) Virtual Machines
4 1 (0.12%) VMware Infrastructure
4 1 (0.12%) vSphere
Systems Management
1 152 (17.59%) Kubernetes
2 67 (7.75%) Terraform
3 36 (4.17%) Ansible
4 10 (1.16%) Puppet
5 9 (1.04%) Opscode Chef
6 8 (0.93%) Salt
7 7 (0.81%) Grafana
8 6 (0.69%) Prometheus
9 3 (0.35%) HP Quality Center
9 3 (0.35%) Pacemaker
9 3 (0.35%) Rundeck
10 2 (0.23%) HP ALM
10 2 (0.23%) Kibana
10 2 (0.23%) TeamSite
11 1 (0.12%) Docker Swarm
11 1 (0.12%) Failover Clustering
11 1 (0.12%) Graphite
11 1 (0.12%) Nagios
11 1 (0.12%) Single Sign-On
Vendors
1 43 (4.98%) Microsoft
2 38 (4.40%) Oracle
3 21 (2.43%) Sybase
4 18 (2.08%) Google
5 15 (1.74%) Atlassian
6 12 (1.39%) Databricks
6 12 (1.39%) MuleSoft
7 9 (1.04%) Cloudera
7 9 (1.04%) Murex
7 9 (1.04%) Splunk
8 8 (0.93%) DevExpress
8 8 (0.93%) Salesforce.com
8 8 (0.93%) SAP
9 5 (0.58%) Axway
9 5 (0.58%) Hortonworks
9 5 (0.58%) Red Hat
9 5 (0.58%) Sparx
10 4 (0.46%) Confluent
10 4 (0.46%) Dynatrace
10 4 (0.46%) Tableau