Period
to 7 July 2020

The following table provides summary statistics for contract job vacancies advertised in Central 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 7 July 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)
London > Central London
6 months to
7 Jul 2020
Same period 2019 Same period 2018
Rank 26 16 11
Rank change year-on-year -10 -5 -1
Contract jobs citing TDD 225 866 1,000
As % of all contract jobs advertised in Central London 6.75% 9.94% 10.61%
As % of the Processes & Methodologies category 7.75% 11.03% 11.97%
Number of daily rates quoted 193 785 869
Median daily rate £550 £550 £525
Median daily rate % change year-on-year - +4.76% +2.44%
10th Percentile £425 £425 £413
90th Percentile £685 £675 £675
London median daily rate £550 £550 £525
% change year-on-year - +4.76% +5.00%
Number of hourly rates quoted 2 1 0
Median hourly rate £55.00 £60.00 -
Median hourly rate % change year-on-year -8.33% - -
London median hourly rate £61.75 £35.00 £45.00
% change year-on-year +76.43% -22.22% +20.00%

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 Central London with a requirement for process or methodology skills.

All Process and Methodology Skills
Central London
Contract vacancies with a requirement for process or methodology skills 2,902 7,850 8,355
As % of all contract IT jobs advertised in Central London 87.07% 90.14% 88.68%
Number of daily rates quoted 2,029 6,049 6,529
Median daily rate £500 £525 £500
Median daily rate % change year-on-year -4.76% +5.00% +1.01%
10th Percentile £331 £350 £325
90th Percentile £675 £675 £675
London median daily rate £525 £520 £500
% change year-on-year +0.96% +4.00% +5.15%
Number of hourly rates quoted 58 82 123
Median hourly rate £35.00 £21.09 £19.25
Median hourly rate % change year-on-year +65.96% +9.56% +13.50%
10th Percentile £12.68 £11.25 £12.55
90th Percentile £47.75 £53.75 £41.35
Median hourly rate £35.00 £24.50 £24.09
% change year-on-year +42.86% +1.70% -2.49%

TDD
Job Vacancy Trend in Central London

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

Job vacancy trend for TDD in Central London

TDD
Contractor Daily Rate Trend in Central London

3-month moving average daily rate quoted in jobs citing TDD in Central London.

Daily rate trend for TDD in Central London

TDD
Daily Rate Histogram in Central London

Daily rate distribution for jobs citing TDD in Central London over the 6 months to 7 July 2020.

Daily rate histogram for TDD in Central London

TDD
Contractor Hourly Rate Trend in Central London

3-month moving average hourly rates quoted in jobs citing TDD in Central London.

Hourly rate trend for TDD in Central London

TDD
Contract Job Locations in Central 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 Central London region over the 6 months to 7 July 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
City of London -6 198 £550 - 90
West End of London +8 6 £600 +9.09%
City of Westminster -7 6 £575 +4.55%
TDD
London

For the 6 months to 7 July 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 Central London region with a requirement for TDD.

1 154 (68.44%) Agile Software Development
2 119 (52.89%) Java
3 92 (40.89%) BDD
4 73 (32.44%) Microservices
5 54 (24.00%) JavaScript
6 44 (19.56%) Spring
7 40 (17.78%) Azure
7 40 (17.78%) Scrum
8 39 (17.33%) Docker
9 38 (16.89%) AWS
10 36 (16.00%) Pair Programming
11 35 (15.56%) DevOps
12 33 (14.67%) React
12 33 (14.67%) SQL
12 33 (14.67%) Java 8
13 32 (14.22%) Kubernetes
14 31 (13.78%) Test Automation
15 30 (13.33%) Finance
16 28 (12.44%) HTML
16 28 (12.44%) Greenfield Project
17 27 (12.00%) Node.js
17 27 (12.00%) CSS
17 27 (12.00%) Front Office
18 26 (11.56%) Continuous Integration
19 25 (11.11%) Git (software)
19 25 (11.11%) Kafka
19 25 (11.11%) AngularJS
20 24 (10.67%) Python
20 24 (10.67%) .NET
21 23 (10.22%) Jenkins

TDD
Co-occurring IT Skills in Central 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 12 (5.33%) Apache Spark
2 9 (4.00%) Confluence
3 8 (3.56%) Elasticsearch
4 4 (1.78%) WordPress
5 2 (0.89%) Cloud Foundry
5 2 (0.89%) IIS
5 2 (0.89%) SharePoint
6 1 (0.44%) Apache Solr
6 1 (0.44%) CMS
6 1 (0.44%) Drupal
6 1 (0.44%) EPiServer
Applications
1 1 (0.44%) Zeplin
Business Applications
1 1 (0.44%) ION MarketView
1 1 (0.44%) Salesforce.com CRM
Cloud Services
1 40 (17.78%) Azure
2 38 (16.89%) AWS
3 16 (7.11%) GCP
4 7 (3.11%) SaaS
5 6 (2.67%) AWS Lambda
5 6 (2.67%) GitHub
5 6 (2.67%) Serverless
6 3 (1.33%) Amazon EC2
6 3 (1.33%) Amazon ECS
6 3 (1.33%) Amazon S3
6 3 (1.33%) npm
7 2 (0.89%) Amazon ELB
7 2 (0.89%) Cloud Computing
7 2 (0.89%) IaaS
7 2 (0.89%) PaaS
7 2 (0.89%) Power Platform
8 1 (0.44%) OpenShift
8 1 (0.44%) Route 53
8 1 (0.44%) Virtual Private Cloud
8 1 (0.44%) Yarn
Communications & Networking
1 4 (1.78%) DNS
1 4 (1.78%) HTTP
2 2 (0.89%) DHCP
2 2 (0.89%) FTP
2 2 (0.89%) Intrusion Detection
2 2 (0.89%) Multicast
2 2 (0.89%) SSL
2 2 (0.89%) TCP/IP
3 1 (0.44%) PuTTY
3 1 (0.44%) WAN
Database & Business Intelligence
1 12 (5.33%) SQL Server
2 10 (4.44%) MongoDB
3 8 (3.56%) NoSQL
3 8 (3.56%) PostgreSQL
4 7 (3.11%) MySQL
5 6 (2.67%) Azure SQL Database
6 5 (2.22%) Hadoop
6 5 (2.22%) Relational Database
7 4 (1.78%) Apache Hive
7 4 (1.78%) Big Data
7 4 (1.78%) HBase
7 4 (1.78%) SQL Server Integration Services
8 3 (1.33%) Impala
8 3 (1.33%) Redis
9 2 (0.89%) Amazon DynamoDB
9 2 (0.89%) Amazon RDS
9 2 (0.89%) Power BI
9 2 (0.89%) SQL Server 2017
10 1 (0.44%) Amazon Athena
10 1 (0.44%) Data Lake
Development Applications
1 25 (11.11%) Git (software)
2 23 (10.22%) Jenkins
3 15 (6.67%) JIRA
4 10 (4.44%) Cucumber
5 8 (3.56%) JUnit
5 8 (3.56%) Mockito
6 7 (3.11%) Maven
6 7 (3.11%) Selenium
7 6 (2.67%) GitLab
7 6 (2.67%) Gradle
7 6 (2.67%) Jasmine
8 5 (2.22%) Protractor
8 5 (2.22%) TeamCity
9 4 (1.78%) CircleCI
9 4 (1.78%) Mocha
9 4 (1.78%) Octopus Deploy
9 4 (1.78%) Sonatype Nexus
9 4 (1.78%) SpecFlow
9 4 (1.78%) Subversion
10 3 (1.33%) Artifactory
General
1 30 (13.33%) Finance
2 27 (12.00%) Front Office
3 21 (9.33%) Banking
4 15 (6.67%) Investment Banking
5 7 (3.11%) Games
5 7 (3.11%) Public Sector
6 4 (1.78%) Financial Institution
6 4 (1.78%) Publishing
7 3 (1.33%) Automotive
7 3 (1.33%) Police
7 3 (1.33%) Retail
8 2 (0.89%) Advertising
8 2 (0.89%) Marketing
9 1 (0.44%) Back Office
9 1 (0.44%) Legal
9 1 (0.44%) Telecoms
Job Titles
1 165 (73.33%) Developer
2 75 (33.33%) Java Developer
3 15 (6.67%) React Developer
4 13 (5.78%) Senior Developer
5 12 (5.33%) Full Stack Developer
6 11 (4.89%) AWS Developer
6 11 (4.89%) Front End Developer (Client-Side Developer)
7 10 (4.44%) Scala Developer
8 9 (4.00%) Angular Developer
9 8 (3.56%) Analyst
9 8 (3.56%) Python Engineer
10 7 (3.11%) .NET Developer
10 7 (3.11%) Agile Developer
10 7 (3.11%) Agile Java Developer
10 7 (3.11%) Java Engineer
11 6 (2.67%) C# Developer
11 6 (2.67%) DevOps Engineer
11 6 (2.67%) JavaScript Developer
11 6 (2.67%) Low Latency Java Developer
12 5 (2.22%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 44 (19.56%) Spring
2 33 (14.67%) React
3 28 (12.44%) HTML
4 27 (12.00%) CSS
4 27 (12.00%) Node.js
5 25 (11.11%) AngularJS
5 25 (11.11%) Kafka
6 24 (10.67%) .NET
7 18 (8.00%) Spring Boot
8 16 (7.11%) REST
8 16 (7.11%) RESTful
9 14 (6.22%) Web Services
10 13 (5.78%) ASP.NET
11 12 (5.33%) GraphQL
11 12 (5.33%) HTML5
11 12 (5.33%) Redux
11 12 (5.33%) Spring Cloud
12 9 (4.00%) SOAP
13 8 (3.56%) CSS3
13 8 (3.56%) Jest
Miscellaneous
1 28 (12.44%) Greenfield Project
2 16 (7.11%) Fixed Income
3 10 (4.44%) User Experience
4 9 (4.00%) Foreign Exchange (FX)
5 6 (2.67%) Enterprise Software
6 5 (2.22%) Analytical Skills
7 4 (1.78%) Augmented Reality
7 4 (1.78%) Derivative
8 3 (1.33%) Equities
8 3 (1.33%) Management Information System
8 3 (1.33%) Market Risk
8 3 (1.33%) Public Cloud
8 3 (1.33%) Self-Motivation
9 2 (0.89%) Clustering
9 2 (0.89%) Credit Risk
9 2 (0.89%) N-Tier
10 1 (0.44%) FMCG
10 1 (0.44%) Hedge funds
10 1 (0.44%) Interest Rate Derivative
10 1 (0.44%) Video on Demand
Operating Systems
1 18 (8.00%) Linux
2 11 (4.89%) Unix
3 8 (3.56%) Mac OS X
4 5 (2.22%) Android
5 1 (0.44%) Apple iOS
Processes & Methodologies
1 154 (68.44%) Agile Software Development
2 92 (40.89%) BDD
3 73 (32.44%) Microservices
4 40 (17.78%) Scrum
5 36 (16.00%) Pair Programming
6 35 (15.56%) DevOps
7 31 (13.78%) Test Automation
8 26 (11.56%) Continuous Integration
9 19 (8.44%) Continuous Delivery
9 19 (8.44%) Software Engineering
10 18 (8.00%) Kanban
11 17 (7.56%) Multithreading
12 16 (7.11%) Continuous Improvement
12 16 (7.11%) Fintech
13 15 (6.67%) Front End Development
13 15 (6.67%) Low Latency
13 15 (6.67%) Problem-Solving
14 14 (6.22%) E-Commerce
15 13 (5.78%) Continuous Deployment
16 12 (5.33%) MVC
Programming Languages
1 119 (52.89%) Java
2 54 (24.00%) JavaScript
3 33 (14.67%) Java 8
3 33 (14.67%) SQL
4 24 (10.67%) Python
5 21 (9.33%) C#
5 21 (9.33%) Kotlin
6 18 (8.00%) Scala
7 16 (7.11%) TypeScript
8 11 (4.89%) Ruby
9 9 (4.00%) PHP
10 5 (2.22%) ES6
11 4 (1.78%) C
11 4 (1.78%) Groovy
11 4 (1.78%) R
12 3 (1.33%) Shell Script
12 3 (1.33%) T-SQL
13 2 (0.89%) Go
13 2 (0.89%) Perl
14 1 (0.44%) ES7
Qualifications
1 12 (5.33%) Security Cleared
2 9 (4.00%) Degree
3 7 (3.11%) SC Cleared
4 3 (1.33%) ISTQB
4 3 (1.33%) Numerate Degree
5 2 (0.89%) ISEB
6 1 (0.44%) BPSS Clearance
6 1 (0.44%) Computer Science Degree
6 1 (0.44%) DBS Check
6 1 (0.44%) ISTQB Advanced Certification
6 1 (0.44%) ISTQB Foundation Certification
6 1 (0.44%) Master's Degree
Quality Assurance & Compliance
1 12 (5.33%) QA
2 3 (1.33%) WCAG
3 1 (0.44%) Data Quality
3 1 (0.44%) Disclosure Scotland
3 1 (0.44%) EMIR
3 1 (0.44%) GDPR
3 1 (0.44%) MiFID
System Software
1 39 (17.33%) Docker
2 3 (1.33%) HDFS
3 2 (0.89%) Veritas Cluster Server
4 1 (0.44%) Active Directory
Systems Management
1 32 (14.22%) Kubernetes
2 13 (5.78%) Terraform
3 7 (3.11%) Ansible
4 4 (1.78%) Puppet
5 3 (1.33%) Hadoop YARN
5 3 (1.33%) Prometheus
6 2 (0.89%) Docker Swarm
6 2 (0.89%) Grafana
6 2 (0.89%) Graphite
6 2 (0.89%) Nagios
6 2 (0.89%) Opscode Chef
6 2 (0.89%) Pacemaker
6 2 (0.89%) Salt
7 1 (0.44%) Kibana
7 1 (0.44%) MIIS
Vendors
1 11 (4.89%) Microsoft
2 9 (4.00%) Google
3 7 (3.11%) Atlassian
4 4 (1.78%) CA
4 4 (1.78%) CA Agile Central
4 4 (1.78%) Salesforce.com
5 3 (1.33%) Databricks
6 2 (0.89%) Facebook
6 2 (0.89%) Oracle
6 2 (0.89%) SaltStack
6 2 (0.89%) Tableau
6 2 (0.89%) Veritas
7 1 (0.44%) Cadence
7 1 (0.44%) DevExpress
7 1 (0.44%) GoCardless
7 1 (0.44%) IBM
7 1 (0.44%) ION Trading
7 1 (0.44%) Remedy
7 1 (0.44%) TOWER Software
7 1 (0.44%) Zuora