Period
to 12 November 2019

The following table provides summary statistics for contract job vacancies advertised in the City of 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 12 November 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)
Central London > City of London
6 months to
12 Nov 2019
Same period 2018 Same period 2017
Rank 15 9 10
Rank change year-on-year -6 +1 +1
Contract jobs citing TDD 552 859 745
As % of all contract IT jobs advertised in the City of London 9.39% 12.34% 10.61%
As % of the Processes & Methodologies category 10.45% 14.12% 11.81%
Number of daily rates quoted 489 770 645
City of London median daily rate £550 £533 £525
Median daily rate % change year-on-year +3.29% +1.43% +5.00%
10th Percentile £431 £425 £413
90th Percentile £688 £675 £669
Central London median daily rate £550 £525 £525
% change year-on-year +4.76% - +5.00%
Number of hourly rates quoted 1 0 0
City of London median hourly rate £63.33 - -
Central London median hourly rate £63.33 - -

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 the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Contract vacancies with a requirement for process or methodology skills 5,280 6,082 6,309
As % of all contract IT jobs advertised in the City of London 89.78% 87.40% 89.83%
Number of daily rates quoted 4,138 4,841 5,006
City of London median daily rate £525 £510 £505
Median daily rate % change year-on-year +2.94% +0.99% +6.32%
10th Percentile £325 £325 £325
90th Percentile £688 £675 £688
Central London median daily rate £513 £500 £500
% change year-on-year +2.50% - +5.26%
Number of hourly rates quoted 57 96 60
City of London median hourly rate £19.50 £19.00 £18.70
Median hourly rate % change year-on-year +2.63% +1.60% -6.12%
10th Percentile £12.02 £13.16 £13.31
90th Percentile £52.85 £33.38 £30.83
Central London median hourly rate £20.42 £19.00 £19.00
% change year-on-year +7.45% - -

TDD
Job Vacancy Trend in the City of London

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

Job vacancy trend for TDD in the City of London

TDD
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for TDD in the City of London

TDD
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing TDD in the City of London over the 6 months to 12 November 2019.

Contractor daily rate histogram for TDD in the City of London

TDD
Contractor Hourly Rate Trend in the City of London

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

Contractor hourly rate trend for TDD in the City of London

TDD
Contract Job Locations in the City of 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 City of London region over the 6 months to 12 November 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
Moorgate -2 8 £500 -4.76%
London Bridge -22 1 £440 -23.48% 1
TDD
Central London

For the 6 months to 12 November 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 City of London region with a requirement for TDD.

1 358 (64.86%) Agile Software Development
2 238 (43.12%) Java
3 201 (36.41%) BDD
4 173 (31.34%) JavaScript
5 171 (30.98%) Microservices
6 123 (22.28%) C#
7 111 (20.11%) AWS
8 110 (19.93%) Finance
9 109 (19.75%) SQL
10 102 (18.48%) Docker
11 99 (17.93%) React
11 99 (17.93%) Scrum
12 98 (17.75%) Continuous Integration
12 98 (17.75%) AngularJS
13 96 (17.39%) Spring
14 95 (17.21%) CSS
15 93 (16.85%) .NET
15 93 (16.85%) DevOps
16 92 (16.67%) HTML
17 89 (16.12%) Node.js
18 88 (15.94%) Azure
19 78 (14.13%) Test Automation
20 77 (13.95%) Pair Programming
21 76 (13.77%) Git (software)
22 73 (13.22%) Kubernetes
23 72 (13.04%) RESTful
24 68 (12.32%) Python
25 66 (11.96%) TypeScript
26 64 (11.59%) Software Engineering
26 64 (11.59%) Front End Development

TDD
Co-occurring IT Skills in the City of 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 35 (6.34%) Elasticsearch
2 20 (3.62%) Apache Spark
3 17 (3.08%) Confluence
4 14 (2.54%) CMS
5 12 (2.17%) JBoss
6 9 (1.63%) Jetty
6 9 (1.63%) Tomcat
7 7 (1.27%) Adobe Experience Manager
7 7 (1.27%) IIS
8 5 (0.91%) Apache
9 3 (0.54%) Anypoint
9 3 (0.54%) EPiServer
9 3 (0.54%) SharePoint
9 3 (0.54%) WebLogic
10 2 (0.36%) Magnolia
10 2 (0.36%) Oracle Self-Service HR
10 2 (0.36%) WebSphere
11 1 (0.18%) Apache Solr
11 1 (0.18%) Drupal
11 1 (0.18%) nginx
Applications
1 5 (0.91%) Chatbot
2 4 (0.72%) Microsoft Excel
3 2 (0.36%) Zeplin
4 1 (0.18%) Adobe Illustrator
4 1 (0.18%) Photoshop
Business Applications
1 4 (0.72%) Remedy ITSM
2 3 (0.54%) Dynamics CRM
3 1 (0.18%) Oracle Financials
3 1 (0.18%) Oracle Retail
3 1 (0.18%) PeopleSoft Financials
Cloud Services
1 111 (20.11%) AWS
2 88 (15.94%) Azure
3 26 (4.71%) Serverless
4 19 (3.44%) GCP
5 14 (2.54%) AWS Lambda
6 13 (2.36%) Cloud Computing
6 13 (2.36%) GitHub
7 10 (1.81%) npm
8 8 (1.45%) Amazon SQS
8 8 (1.45%) Power Platform
9 4 (0.72%) Amazon ECS
9 4 (0.72%) CloudFront
9 4 (0.72%) PaaS
10 3 (0.54%) Azure Active Directory
10 3 (0.54%) Google App Engine
10 3 (0.54%) SaaS
10 3 (0.54%) Yarn
11 2 (0.36%) Amazon EC2
11 2 (0.36%) Amazon S3
11 2 (0.36%) OpenShift
Communications & Networking
1 18 (3.26%) HTTP
2 11 (1.99%) DNS
2 11 (1.99%) FTP
3 10 (1.81%) SSL
3 10 (1.81%) TCP/IP
4 5 (0.91%) Internet
5 3 (0.54%) SSH
6 1 (0.18%) Firewall
6 1 (0.18%) Intrusion Detection
6 1 (0.18%) LAN
6 1 (0.18%) PuTTY
6 1 (0.18%) SMTP
6 1 (0.18%) WAN
6 1 (0.18%) Wi-Fi
Database & Business Intelligence
1 46 (8.33%) NoSQL
2 40 (7.25%) MySQL
3 33 (5.98%) MongoDB
4 31 (5.62%) SQL Server
5 27 (4.89%) PostgreSQL
6 23 (4.17%) Relational Database
7 22 (3.99%) Hadoop
8 21 (3.80%) Redis
9 16 (2.90%) Cosmos DB
10 15 (2.72%) Azure SQL Database
11 14 (2.54%) Couchbase
12 13 (2.36%) Apache Cassandra
12 13 (2.36%) Data Lake
13 11 (1.99%) Data Warehouse
13 11 (1.99%) HBase
14 10 (1.81%) Big Data
15 9 (1.63%) SQL Server Integration Services
16 8 (1.45%) Power BI
17 7 (1.27%) Amazon DynamoDB
17 7 (1.27%) Jackrabbit
Development Applications
1 76 (13.77%) Git (software)
2 48 (8.70%) Jenkins
3 29 (5.25%) TeamCity
4 28 (5.07%) JIRA
4 28 (5.07%) Selenium
5 24 (4.35%) webpack
6 19 (3.44%) Cucumber
7 18 (3.26%) Team Foundation Server
8 17 (3.08%) Gradle
9 16 (2.90%) Atlassian Bamboo
9 16 (2.90%) gulp
9 16 (2.90%) JUnit
10 15 (2.72%) Maven
11 14 (2.54%) Gatling
12 13 (2.36%) Mocha
12 13 (2.36%) NUnit
13 12 (2.17%) GitLab
14 11 (1.99%) Mockito
14 11 (1.99%) Spock
15 10 (1.81%) WebDriver
General
1 110 (19.93%) Finance
2 56 (10.14%) Banking
3 33 (5.98%) Front Office
4 16 (2.90%) Retail
5 14 (2.54%) Marketing
6 13 (2.36%) Public Sector
7 10 (1.81%) Investment Banking
8 7 (1.27%) Advertising
9 6 (1.09%) Games
9 6 (1.09%) Retail Banking
10 4 (0.72%) Financial Institution
11 2 (0.36%) Back Office
11 2 (0.36%) Law
11 2 (0.36%) Telecoms
12 1 (0.18%) Electronics
12 1 (0.18%) Legal
12 1 (0.18%) Police
12 1 (0.18%) Publishing
Job Titles
1 416 (75.36%) Developer
2 154 (27.90%) Java Developer
3 75 (13.59%) Senior Developer
4 53 (9.60%) React Developer
5 44 (7.97%) .NET Developer
6 41 (7.43%) Front End Developer (Client-Side Developer)
7 38 (6.88%) C# Developer
8 34 (6.16%) AWS Developer
8 34 (6.16%) Full Stack Developer
9 27 (4.89%) Python Developer
9 27 (4.89%) Scala Developer
10 25 (4.53%) Senior Java Developer
11 24 (4.35%) Architect
11 24 (4.35%) JavaScript Developer
12 22 (3.99%) Agile Developer
13 20 (3.62%) Angular Developer
14 19 (3.44%) Agile Java Developer
15 15 (2.72%) C# .NET Developer
15 15 (2.72%) Senior .NET Developer
16 14 (2.54%) Java Engineer
Libraries, Frameworks & Software Standards
1 99 (17.93%) React
2 98 (17.75%) AngularJS
3 96 (17.39%) Spring
4 95 (17.21%) CSS
5 93 (16.85%) .NET
6 92 (16.67%) HTML
7 89 (16.12%) Node.js
8 72 (13.04%) RESTful
9 62 (11.23%) Kafka
10 58 (10.51%) Redux
11 53 (9.60%) REST
11 53 (9.60%) Spring Boot
12 40 (7.25%) HTML5
13 29 (5.25%) .NET Core
14 28 (5.07%) ASP.NET Web API
15 25 (4.53%) ASP.NET
15 25 (4.53%) CSS3
16 24 (4.35%) .NET Framework
16 24 (4.35%) OAuth
17 23 (4.17%) JSON
Miscellaneous
1 56 (10.14%) Greenfield Project
2 22 (3.99%) User Experience
3 13 (2.36%) Algorithms
4 12 (2.17%) Mobile App
5 11 (1.99%) Analytical Skills
6 9 (1.63%) Equities
7 8 (1.45%) Data Structures
7 8 (1.45%) Hedge funds
8 7 (1.27%) Enterprise Software
8 7 (1.27%) Public Cloud
9 6 (1.09%) Derivative
9 6 (1.09%) Linux Command Line
10 5 (0.91%) Foreign Exchange (FX)
10 5 (0.91%) Virtual Team
11 4 (0.72%) Equity Derivative
12 3 (0.54%) Fixed Income
13 2 (0.36%) iPad
13 2 (0.36%) N-Tier
13 2 (0.36%) Spread Betting
14 1 (0.18%) iPhone
Operating Systems
1 42 (7.61%) Linux
2 14 (2.54%) Unix
3 11 (1.99%) Android
3 11 (1.99%) Apple iOS
4 6 (1.09%) Windows
5 4 (0.72%) Mac OS X
5 4 (0.72%) Red Hat Enterprise Linux
6 2 (0.36%) CentOS
6 2 (0.36%) Debian
6 2 (0.36%) Mac OS
6 2 (0.36%) Ubuntu
7 1 (0.18%) tvOS
7 1 (0.18%) Windows Server
Processes & Methodologies
1 358 (64.86%) Agile Software Development
2 201 (36.41%) BDD
3 171 (30.98%) Microservices
4 99 (17.93%) Scrum
5 98 (17.75%) Continuous Integration
6 93 (16.85%) DevOps
7 78 (14.13%) Test Automation
8 77 (13.95%) Pair Programming
9 64 (11.59%) Front End Development
9 64 (11.59%) Software Engineering
10 52 (9.42%) OO
11 47 (8.51%) Fintech
12 46 (8.33%) Continuous Delivery
12 46 (8.33%) Unit Testing
13 45 (8.15%) Kanban
14 41 (7.43%) E-Commerce
15 40 (7.25%) Digital Transformation Programme
16 36 (6.52%) SDLC
17 35 (6.34%) SOLID
18 33 (5.98%) Computer Science
Programming Languages
1 238 (43.12%) Java
2 173 (31.34%) JavaScript
3 123 (22.28%) C#
4 109 (19.75%) SQL
5 68 (12.32%) Python
6 66 (11.96%) TypeScript
7 62 (11.23%) Java 8
8 53 (9.60%) Scala
9 35 (6.34%) ES6
10 31 (5.62%) Ruby
11 21 (3.80%) Kotlin
12 17 (3.08%) Go
13 14 (2.54%) T-SQL
14 11 (1.99%) Apex Code
15 9 (1.63%) C
16 8 (1.45%) PHP
17 7 (1.27%) Clojure
17 7 (1.27%) Perl
17 7 (1.27%) VB.NET
18 6 (1.09%) ClojureScript
Qualifications
1 26 (4.71%) Degree
2 16 (2.90%) Security Cleared
3 14 (2.54%) SC Cleared
4 10 (1.81%) Computer Science Degree
5 7 (1.27%) Master's Degree
6 5 (0.91%) ISTQB
7 1 (0.18%) BPSS Clearance
7 1 (0.18%) DV Cleared
7 1 (0.18%) ISTQB Foundation Certification
7 1 (0.18%) Sun Certification
Quality Assurance & Compliance
1 29 (5.25%) QA
2 2 (0.36%) WCAG
3 1 (0.18%) Data Quality
3 1 (0.18%) PCI DSS
System Software
1 102 (18.48%) Docker
2 6 (1.09%) HDFS
3 4 (0.72%) Varnish
4 2 (0.36%) Active Directory
4 2 (0.36%) Apache ZooKeeper
5 1 (0.18%) Virtual Machines
5 1 (0.18%) VMware Infrastructure
Systems Management
1 73 (13.22%) Kubernetes
2 26 (4.71%) Terraform
3 18 (3.26%) Ansible
4 11 (1.99%) Docker Swarm
5 10 (1.81%) Puppet
6 9 (1.63%) Marathon
6 9 (1.63%) Mesos
7 7 (1.27%) Cobbler
7 7 (1.27%) MIIS
7 7 (1.27%) Opscode Chef
8 6 (1.09%) Hadoop YARN
9 5 (0.91%) ITRS Geneos
9 5 (0.91%) Nagios
10 4 (0.72%) Prometheus
10 4 (0.72%) ZABBIX
11 3 (0.54%) Grafana
12 2 (0.36%) Salt
12 2 (0.36%) Single Sign-On
13 1 (0.18%) Consul
13 1 (0.18%) Graphite
Vendors
1 32 (5.80%) Microsoft
2 26 (4.71%) Google
3 16 (2.90%) Salesforce.com
4 14 (2.54%) Atlassian
5 12 (2.17%) Oracle
6 8 (1.45%) Adobe
7 7 (1.27%) Splunk
8 6 (1.09%) New Relic
9 5 (0.91%) Perforce
10 4 (0.72%) Apple
10 4 (0.72%) BMC
10 4 (0.72%) Red Hat
10 4 (0.72%) Remedy
10 4 (0.72%) ServiceNow
10 4 (0.72%) Tableau
11 3 (0.54%) Criteo
11 3 (0.54%) Facebook
11 3 (0.54%) Kofax
11 3 (0.54%) MuleSoft
12 2 (0.36%) Sybase