Period
to 21 July 2018

The following table provides summary statistics for contract job vacancies 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 21 July 2018 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)
UK
6 months to
21 Jul 2018
Same period 2017 Same period 2016
Rank 19 20 29
Rank change year-on-year +1 +9 +4
Contract jobs citing TDD 8,089 6,877 6,436
As % of all contract IT jobs advertised in the UK 7.76% 7.17% 5.85%
As % of the Processes & Methodologies category 9.06% 8.44% 6.94%
Number of daily rates quoted 6,263 5,341 5,175
UK median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £363 £325 £320
90th Percentile £625 £625 £613
UK excluding London median daily rate £430 £420 £410
% change year-on-year +2.38% +2.44% +9.33%
Number of hourly rates quoted 27 40 29
UK median hourly rate £45.00 £41.50 £42.50
Median hourly rate % change year-on-year +8.43% -2.35% +6.25%
10th Percentile £21.45 £34.75 £30.85
90th Percentile £60.38 £63.75 £59.75
UK excluding London median hourly rate £43.75 £41.50 £42.50
% change year-on-year +5.42% -2.35% +6.25%

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 with a requirement for process or methodology skills.

All Process and Methodology Skills
UK
Contract vacancies with a requirement for process or methodology skills 89,309 81,490 92,799
As % of all contract IT jobs advertised in the UK 85.73% 84.93% 84.32%
Number of daily rates quoted 58,913 53,342 61,105
UK median daily rate £450 £450 £425
Median daily rate % change year-on-year +0.11% +5.76% +6.25%
10th Percentile £300 £275 £263
90th Percentile £638 £625 £600
UK excluding London median daily rate £425 £400 £400
% change year-on-year +6.25% - +6.67%
Number of hourly rates quoted 2,461 2,132 2,284
UK median hourly rate £22.00 £25.00 £24.00
Median hourly rate % change year-on-year -12.00% +4.17% +11.63%
10th Percentile £11.17 £11.50 £11.50
90th Percentile £50.00 £52.49 £48.75
UK excluding London median hourly rate £21.00 £25.00 £25.00
% change year-on-year -16.00% - +16.01%

TDD
Job Vacancy Trend

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

Job vacancy trend for TDD in the UK

TDD
Contractor Daily Rate Trend

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

Contractor daily rate trend for TDD in the UK

TDD
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing TDD over the 6 months to 21 July 2018.

Contractor daily rate histogram for TDD in the UK

TDD
Contractor Hourly Rate Trend

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

Contractor hourly rate trend for TDD in the UK

TDD
Contractor Hourly Rate Histogram

The hourly rate distribution of IT jobs citing TDD over the 6 months to 21 July 2018.

Contractor hourly rate histogram for TDD in the UK

TDD
Top 16 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the UK over the 6 months to 21 July 2018. 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
England +1 7,608 £500 +5.26% 2,110
London +1 4,611 £525 +5.00% 1,048
UK excluding London 0 3,401 £430 +2.38% 1,168
North of England +4 1,026 £420 +5.00% 367
South East -1 960 £450 +4.65% 283
Yorkshire +7 498 £425 - 124
Midlands +4 491 £425 +13.33% 164
North West +7 430 £420 +5.00% 219
East of England -10 332 £525 +7.69% 140
West Midlands +4 305 £438 +16.67% 99
Scotland -1 266 £425 +3.03% 67
East Midlands +4 186 £410 +7.89% 65
South West +4 182 £400 - 108
Wales +32 100 £415 -0.30% 29
North East -6 99 £375 +7.14% 24
Northern Ireland +29 46 £450 +12.50% 10

For the 6 months to 21 July 2018, 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 with a requirement for TDD.

1 6,154 (76.08%) Agile Software Development
2 3,462 (42.80%) Java
3 3,226 (39.88%) BDD
4 2,973 (36.75%) JavaScript
5 2,469 (30.52%) Scrum
6 2,115 (26.15%) Continuous Integration
7 2,057 (25.43%) Git (software)
8 1,870 (23.12%) HTML
9 1,857 (22.96%) C#
10 1,779 (21.99%) .NET
11 1,755 (21.70%) Test Automation
12 1,747 (21.60%) Microservices
13 1,712 (21.16%) CSS
14 1,551 (19.17%) Amazon AWS
15 1,547 (19.12%) Spring
16 1,534 (18.96%) AngularJS
17 1,524 (18.84%) Jenkins
18 1,464 (18.10%) SQL
19 1,449 (17.91%) RESTful
20 1,444 (17.85%) REST
21 1,407 (17.39%) Finance
22 1,370 (16.94%) React
23 1,305 (16.13%) DevOps
24 1,298 (16.05%) MVC
25 1,286 (15.90%) Web Services
26 1,230 (15.21%) Node.js
27 1,193 (14.75%) Kanban
28 1,166 (14.41%) Docker
29 1,153 (14.25%) OO
30 1,137 (14.06%) Microsoft Azure

TDD
Co-occurring IT Skills 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
1 427 (5.28%) Confluence
2 299 (3.70%) Elasticsearch
3 292 (3.61%) Apache
4 247 (3.05%) Tomcat
5 241 (2.98%) Apache Spark
6 203 (2.51%) WebSphere
7 164 (2.03%) JBoss
8 163 (2.02%) Cloud Foundry
9 160 (1.98%) WebLogic
10 135 (1.67%) CMS
11 133 (1.64%) NServiceBus
12 114 (1.41%) OpenStack
13 92 (1.14%) Oracle SOA Suite
14 88 (1.09%) Mule
15 63 (0.78%) Jetty
16 62 (0.77%) Oracle Service Bus
17 54 (0.67%) IIS
18 46 (0.57%) Sitecore CMS
19 42 (0.52%) Adobe Experience Manager
19 42 (0.52%) Apache Solr
Applications
1 58 (0.72%) Photoshop
2 30 (0.37%) Microsoft Excel
3 25 (0.31%) GIMP
4 11 (0.14%) Adobe Illustrator
5 10 (0.12%) Fireworks
6 7 (0.087%) Chatbot
6 7 (0.087%) Spreadsheet
7 4 (0.049%) InVision
7 4 (0.049%) Microsoft Office
7 4 (0.049%) MS Visio
8 2 (0.025%) Adobe Creative Suite
8 2 (0.025%) S-PLUS
9 1 (0.012%) Doxygen
9 1 (0.012%) Final Cut Pro
9 1 (0.012%) Microsoft Project
Business Applications
1 34 (0.42%) Dynamics CRM
2 18 (0.22%) Payment Gateway
3 17 (0.21%) thinkFolio
4 15 (0.19%) Markit EDM
5 14 (0.17%) Eagle PACE
5 14 (0.17%) Front Arena
6 11 (0.14%) Magento
7 6 (0.074%) Bloomberg AIM
7 6 (0.074%) Distributed Ledger
8 5 (0.062%) Oracle BPM
8 5 (0.062%) Summit
9 4 (0.049%) SDL Web 8
10 3 (0.037%) IBM Operational Decision Manager
10 3 (0.037%) LatentZero
10 3 (0.037%) Oracle CRM
10 3 (0.037%) SAP FI
10 3 (0.037%) Siebel CRM
11 2 (0.025%) Adobe Campaign
11 2 (0.025%) Salesforce.com CRM
11 2 (0.025%) SAP Hybris
Cloud Services
1 1,551 (19.17%) Amazon AWS
2 1,137 (14.06%) Microsoft Azure
3 313 (3.87%) GitHub
4 210 (2.60%) Serverless
5 197 (2.44%) npm
6 170 (2.10%) Google Cloud Platform
7 133 (1.64%) Amazon EC2
8 119 (1.47%) Cloud Computing
9 97 (1.20%) PaaS
10 92 (1.14%) Heroku
11 74 (0.91%) OpenShift
12 73 (0.90%) Amazon S3
13 68 (0.84%) AWS Lambda
14 67 (0.83%) SaaS
15 56 (0.69%) Slack
16 46 (0.57%) IaaS
17 44 (0.54%) Amazon SQS
18 40 (0.49%) Yarn
19 32 (0.40%) IBM Cloud
20 28 (0.35%) Amazon CloudWatch
Communications & Networking
1 313 (3.87%) HTTP
2 104 (1.29%) TCP/IP
3 95 (1.17%) Internet
4 58 (0.72%) DNS
5 55 (0.68%) SSL
6 53 (0.66%) SMS
7 50 (0.62%) FTP
8 27 (0.33%) AMQP
9 16 (0.20%) DHCP
9 16 (0.20%) Firewall
10 12 (0.15%) Broadband
10 12 (0.15%) HTTPS
10 12 (0.15%) Software-Defined Networking
11 11 (0.14%) DMARC
12 10 (0.12%) Kerberos
12 10 (0.12%) Network Security
12 10 (0.12%) Reverse Proxy
12 10 (0.12%) Wi-Fi
13 8 (0.099%) DKIM
13 8 (0.099%) FIX Connectivity
Database & Business Intelligence
1 993 (12.28%) SQL Server
2 839 (10.37%) NoSQL
3 537 (6.64%) MongoDB
4 533 (6.59%) PostgreSQL
5 530 (6.55%) MySQL
6 497 (6.14%) Relational Database
7 395 (4.88%) Big Data
8 301 (3.72%) Hadoop
9 249 (3.08%) Apache Cassandra
10 164 (2.03%) Redis
11 137 (1.69%) HBase
12 133 (1.64%) RDBMS
13 121 (1.50%) SQL Server 2012
14 98 (1.21%) Data Warehouse
15 94 (1.16%) SQL Server 2014
16 74 (0.91%) SQL Server 2016
17 73 (0.90%) Apache Hive
18 68 (0.84%) Amazon DynamoDB
19 64 (0.79%) Neo4j
20 61 (0.75%) Couchbase
Development Applications
1 2,057 (25.43%) Git (software)
2 1,524 (18.84%) Jenkins
3 798 (9.87%) Maven
4 776 (9.59%) JIRA
5 683 (8.44%) Selenium
6 608 (7.52%) Cucumber
7 579 (7.16%) JUnit
8 354 (4.38%) webpack
9 340 (4.20%) Subversion
10 333 (4.12%) TeamCity
11 314 (3.88%) Mockito
12 308 (3.81%) NUnit
13 282 (3.49%) Jasmine
14 259 (3.20%) Gradle
15 239 (2.95%) Grunt
16 237 (2.93%) gulp
17 229 (2.83%) Visual Studio
18 226 (2.79%) Team Foundation Server
19 211 (2.61%) SpecFlow
20 207 (2.56%) WebDriver
General
1 1,407 (17.39%) Finance
2 735 (9.09%) Banking
3 301 (3.72%) Retail
4 210 (2.60%) Front Office
5 197 (2.44%) Telecoms
6 185 (2.29%) Games
7 180 (2.23%) Investment Banking
8 169 (2.09%) Marketing
9 117 (1.45%) Manufacturing
10 107 (1.32%) Electronics
11 78 (0.96%) Publishing
12 71 (0.88%) Financial Institution
13 59 (0.73%) Back Office
14 54 (0.67%) Law
15 53 (0.66%) Advertising
16 44 (0.54%) Retail Banking
17 38 (0.47%) Automotive
17 38 (0.47%) Legal
18 9 (0.11%) General Ledger
19 7 (0.087%) Prime Brokerage
Job Titles
1 6,115 (75.60%) Developer
2 1,977 (24.44%) Java Developer
3 1,003 (12.40%) .NET Developer
4 967 (11.95%) Senior Developer
5 796 (9.84%) C# Developer
6 606 (7.49%) React Developer
7 550 (6.80%) JavaScript Developer
8 471 (5.82%) Front End Developer (Client-Side Developer)
9 417 (5.16%) C# .NET Developer
10 398 (4.92%) Full Stack Developer
11 383 (4.73%) Senior Java Developer
12 366 (4.52%) Agile Developer
13 291 (3.60%) Angular Developer
14 267 (3.30%) Software Engineer
15 266 (3.29%) Node.js Developer
16 218 (2.70%) Lead Developer
17 215 (2.66%) Architect
18 207 (2.56%) Scala Developer
19 204 (2.52%) Python Developer
20 197 (2.44%) DevOps Engineer
Libraries, Frameworks & Software Standards
1 1,870 (23.12%) HTML
2 1,779 (21.99%) .NET
3 1,712 (21.16%) CSS
4 1,547 (19.12%) Spring
5 1,534 (18.96%) AngularJS
6 1,449 (17.91%) RESTful
7 1,444 (17.85%) REST
8 1,370 (16.94%) React
9 1,286 (15.90%) Web Services
10 1,230 (15.21%) Node.js
11 1,031 (12.75%) HTML5
12 774 (9.57%) ASP.NET
13 768 (9.49%) Spring Boot
14 757 (9.36%) JSON
15 711 (8.79%) CSS3
16 690 (8.53%) Hibernate
17 655 (8.10%) ASP.NET Web API
18 626 (7.74%) SOAP
19 554 (6.85%) jQuery
20 498 (6.16%) ASP.NET MVC
Miscellaneous
1 868 (10.73%) Greenfield Project
2 560 (6.92%) User Experience
3 365 (4.51%) Mobile App
4 298 (3.68%) Fintech
5 228 (2.82%) Analytical Skills
6 226 (2.79%) Enterprise Software
7 207 (2.56%) Computer Science
8 135 (1.67%) Algorithms
9 123 (1.52%) Derivative
10 114 (1.41%) iPad
11 106 (1.31%) Foreign Exchange (FX)
12 105 (1.30%) Data Structures
12 105 (1.30%) Fixed Income
13 99 (1.22%) Self-Motivation
14 95 (1.17%) Virtual Team
15 79 (0.98%) Equities
16 65 (0.80%) Linux Command Line
17 59 (0.73%) Public Cloud
18 53 (0.66%) Cloud Native
18 53 (0.66%) Video on Demand
Operating Systems
1 900 (11.13%) Linux
2 423 (5.23%) Unix
3 304 (3.76%) Android
4 280 (3.46%) Windows
5 264 (3.26%) Apple iOS
6 67 (0.83%) Mac OS X
7 59 (0.73%) Red Hat Enterprise Linux
8 33 (0.41%) Mac OS
9 27 (0.33%) Windows Server
10 18 (0.22%) CentOS
11 15 (0.19%) VMS
12 14 (0.17%) Solaris
13 13 (0.16%) Ubuntu
14 8 (0.099%) Oracle Linux
15 7 (0.087%) Embedded Linux
15 7 (0.087%) HPUX
16 6 (0.074%) Debian
16 6 (0.074%) Windows 7
16 6 (0.074%) Windows 8
17 5 (0.062%) Windows Phone
Processes & Methodologies
1 6,154 (76.08%) Agile Software Development
2 3,226 (39.88%) BDD
3 2,469 (30.52%) Scrum
4 2,115 (26.15%) Continuous Integration
5 1,755 (21.70%) Test Automation
6 1,747 (21.60%) Microservices
7 1,305 (16.13%) DevOps
8 1,298 (16.05%) MVC
9 1,193 (14.75%) Kanban
10 1,153 (14.25%) OO
11 961 (11.88%) Software Engineering
12 892 (11.03%) Unit Testing
13 885 (10.94%) Pair Programming
14 689 (8.52%) E-Commerce
15 674 (8.33%) Front End Development
16 653 (8.07%) SOA
17 649 (8.02%) Continuous Delivery
18 542 (6.70%) Open Source
19 482 (5.96%) Web Development
20 480 (5.93%) Problem-Solving
Programming Languages
1 3,462 (42.80%) Java
2 2,973 (36.75%) JavaScript
3 1,857 (22.96%) C#
4 1,464 (18.10%) SQL
5 1,119 (13.83%) Java 8
6 816 (10.09%) Python
7 553 (6.84%) Scala
8 449 (5.55%) Ruby
9 412 (5.09%) TypeScript
10 407 (5.03%) ES6
11 262 (3.24%) Groovy
12 253 (3.13%) PHP
13 187 (2.31%) C++
14 178 (2.20%) T-SQL
15 170 (2.10%) Bash Shell
16 158 (1.95%) Kotlin
17 149 (1.84%) Apple Swift
17 149 (1.84%) Go
18 129 (1.59%) Shell Script
19 111 (1.37%) Objective-C
Qualifications
1 396 (4.90%) Security Cleared
2 349 (4.31%) Degree
3 301 (3.72%) SC Cleared
4 101 (1.25%) Computer Science Degree
5 94 (1.16%) BPSS Clearance
6 76 (0.94%) ISTQB
7 41 (0.51%) ISEB
8 31 (0.38%) Master's Degree
9 28 (0.35%) ISTQB Foundation Certification
10 26 (0.32%) DV Cleared
11 15 (0.19%) BC Cleared
12 14 (0.17%) DBS Check
13 10 (0.12%) AWS Certification
14 9 (0.11%) CTC Cleared
15 8 (0.099%) PMI Certification
15 8 (0.099%) PMP
16 6 (0.074%) ISEB Practitioner
16 6 (0.074%) ISTQB Advanced Certification
17 5 (0.062%) Numerate Degree
17 5 (0.062%) Sun Certification
Quality Assurance & Compliance
1 512 (6.33%) QA
2 74 (0.91%) GCP
3 31 (0.38%) PCI DSS
4 30 (0.37%) PMO
5 27 (0.33%) GDPR
6 24 (0.30%) Data Quality
7 15 (0.19%) Disclosure Scotland
8 13 (0.16%) ISO/IEC 27001
9 9 (0.11%) SLA
10 8 (0.099%) EMIR
10 8 (0.099%) MiFID
11 7 (0.087%) WCAG
12 5 (0.062%) HMG Security Policy Framework
12 5 (0.062%) PSD2
13 3 (0.037%) Dodd-Frank
14 2 (0.025%) ISO 9001
14 2 (0.025%) SEPA
14 2 (0.025%) WAI
15 1 (0.012%) DICOM
15 1 (0.012%) ECSS
System Software
1 1,166 (14.41%) Docker
2 82 (1.01%) HDFS
3 71 (0.88%) Apache ZooKeeper
4 50 (0.62%) VMware Infrastructure
5 33 (0.41%) Active Directory
6 30 (0.37%) vSphere
7 24 (0.30%) Virtual Machines
8 12 (0.15%) VirtualBox
9 9 (0.11%) Platform Symphony
10 7 (0.087%) Xen
11 6 (0.074%) Apache Flume
11 6 (0.074%) LXC
12 3 (0.037%) GeoWebCache
12 3 (0.037%) QEMU
12 3 (0.037%) Veritas Cluster Server
13 2 (0.025%) Firmware
13 2 (0.025%) Postfix
14 1 (0.012%) NFS
14 1 (0.012%) OpenIDM
14 1 (0.012%) Varnish
Systems Management
1 407 (5.03%) Ansible
2 402 (4.97%) Kubernetes
3 362 (4.48%) Puppet
4 299 (3.70%) Opscode Chef
5 215 (2.66%) Terraform
6 88 (1.09%) Mesos
7 64 (0.79%) Hadoop YARN
8 47 (0.58%) Kibana
9 43 (0.53%) Consul
10 42 (0.52%) Grafana
11 39 (0.48%) logstash
12 32 (0.40%) HP Quality Center
13 30 (0.37%) Business Desktop Deployment
14 28 (0.35%) Cobbler
15 25 (0.31%) Salt
15 25 (0.31%) Single Sign-On
16 24 (0.30%) Docker Swarm
16 24 (0.30%) Prometheus
17 19 (0.23%) Packer
18 16 (0.20%) Graylog
Vendors
1 535 (6.61%) Oracle
2 486 (6.01%) Microsoft
3 225 (2.78%) Google
4 136 (1.68%) IBM
5 119 (1.47%) SAP
6 84 (1.04%) Adobe
6 84 (1.04%) Splunk
7 78 (0.96%) Atlassian
8 75 (0.93%) Red Hat
9 74 (0.91%) Sitecore
10 57 (0.70%) WSO2
11 51 (0.63%) VMware
12 50 (0.62%) MuleSoft
12 50 (0.62%) Salesforce.com
13 46 (0.57%) Zend
14 45 (0.56%) Sybase
15 40 (0.49%) HP
16 34 (0.42%) Tableau
17 30 (0.37%) AppDynamics
17 30 (0.37%) Xamarin