Period
to 19 October 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 19 October 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
19 Oct 2018
Same period 2017 Same period 2016
Rank 19 17 29
Rank change year-on-year -2 +12 +2
Contract jobs citing TDD 8,012 7,485 6,675
As % of all contract IT jobs advertised in the UK 7.77% 7.53% 6.27%
As % of the Processes & Methodologies category 9.01% 8.78% 7.37%
Number of daily rates quoted 6,223 5,830 5,306
UK median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £375 £345 £325
90th Percentile £638 £625 £600
UK excluding London median daily rate £450 £425 £425
% change year-on-year +5.88% - +11.84%
Number of hourly rates quoted 22 57 27
UK median hourly rate £41.50 £45.00 £42.50
Median hourly rate % change year-on-year -7.78% +5.88% +9.68%
10th Percentile £21.08 £34.00 £31.15
90th Percentile £67.97 £63.75 £48.50
UK excluding London median hourly rate £42.00 £45.00 £40.00
% change year-on-year -6.67% +12.50% +3.23%

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 88,875 85,238 90,549
As % of all contract IT jobs advertised in the UK 86.21% 85.73% 85.10%
Number of daily rates quoted 58,634 56,500 59,763
UK median daily rate £454 £450 £425
Median daily rate % change year-on-year +0.89% +5.88% +3.66%
10th Percentile £300 £280 £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 2,410 2,047 2,459
UK median hourly rate £21.00 £24.87 £22.50
Median hourly rate % change year-on-year -15.56% +10.53% +3.45%
10th Percentile £11.18 £11.25 £11.25
90th Percentile £50.00 £50.00 £48.38
UK excluding London median hourly rate £20.12 £25.00 £23.00
% change year-on-year -19.51% +8.70% +4.55%

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 19 October 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 19 October 2018.

Contractor hourly rate histogram for TDD in the UK

TDD
Top 17 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 19 October 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 -3 7,576 £500 +2.56% 2,186
London -1 4,690 £525 +5.00% 1,062
UK excluding London -3 3,262 £450 +5.88% 1,247
South East -2 979 £475 +11.76% 318
North of England +4 851 £425 +1.19% 367
Midlands +2 444 £450 +12.50% 172
Yorkshire -1 386 £425 - 147
North West +2 368 £428 +6.88% 179
East of England -14 348 £525 +5.00% 122
West Midlands +2 304 £450 +12.50% 84
South West +15 259 £425 +6.25% 145
Scotland -11 246 £425 +6.25% 85
East Midlands +11 140 £405 +1.25% 88
Wales +34 105 £425 - 30
North East +8 97 £395 +1.28% 41
Northern Ireland +12 31 £412 -0.42% 8
Isle of Man - 1 - -

For the 6 months to 19 October 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 5,953 (74.30%) Agile Software Development
2 3,572 (44.58%) Java
3 3,301 (41.20%) BDD
4 2,932 (36.60%) JavaScript
5 2,263 (28.25%) Scrum
6 2,110 (26.34%) Continuous Integration
7 2,019 (25.20%) Git (software)
8 1,965 (24.53%) Microservices
9 1,802 (22.49%) C#
10 1,766 (22.04%) .NET
11 1,738 (21.69%) HTML
12 1,705 (21.28%) Test Automation
13 1,686 (21.04%) Spring
14 1,639 (20.46%) CSS
15 1,611 (20.11%) AngularJS
16 1,602 (20.00%) Amazon AWS
17 1,538 (19.20%) Jenkins
18 1,463 (18.26%) SQL
19 1,431 (17.86%) REST
20 1,397 (17.44%) Finance
21 1,384 (17.27%) RESTful
22 1,357 (16.94%) Docker
23 1,321 (16.49%) DevOps
24 1,298 (16.20%) React
25 1,281 (15.99%) Web Services
26 1,261 (15.74%) Microsoft Azure
27 1,199 (14.97%) Node.js
28 1,195 (14.92%) Java 8
29 1,172 (14.63%) MVC
30 1,108 (13.83%) OO

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
1 473 (5.90%) Confluence
2 289 (3.61%) Elasticsearch
3 270 (3.37%) Tomcat
4 230 (2.87%) Apache Spark
5 226 (2.82%) Apache
6 225 (2.81%) WebSphere
7 205 (2.56%) WebLogic
8 168 (2.10%) CMS
9 150 (1.87%) OpenStack
10 142 (1.77%) JBoss
11 120 (1.50%) Cloud Foundry
12 116 (1.45%) NServiceBus
13 103 (1.29%) Mule
14 88 (1.10%) Oracle SOA Suite
15 80 (1.00%) Jetty
16 67 (0.84%) Oracle Service Bus
17 61 (0.76%) MQSeries
18 59 (0.74%) Apache Solr
19 57 (0.71%) Sitecore CMS
20 54 (0.67%) IIS
Applications
1 56 (0.70%) Photoshop
2 38 (0.47%) Microsoft Excel
3 19 (0.24%) Spreadsheet
4 17 (0.21%) GIMP
5 12 (0.15%) Adobe Illustrator
6 10 (0.12%) Fireworks
6 10 (0.12%) InVision
7 6 (0.075%) Chatbot
8 4 (0.050%) Microsoft Project
8 4 (0.050%) MS Visio
9 2 (0.025%) Microsoft Office
9 2 (0.025%) Snapchat
9 2 (0.025%) S-PLUS
10 1 (0.012%) Adobe Creative Suite
10 1 (0.012%) Doxygen
10 1 (0.012%) Final Cut Pro
10 1 (0.012%) InfoPath
10 1 (0.012%) Microsoft PowerPoint
Business Applications
1 42 (0.52%) Dynamics CRM
2 12 (0.15%) Markit EDM
2 12 (0.15%) Payment Gateway
3 10 (0.12%) Distributed Ledger
4 9 (0.11%) Magento
5 8 (0.100%) thinkFolio
6 6 (0.075%) Oracle BPM
7 4 (0.050%) Eagle PACE
7 4 (0.050%) Front Arena
7 4 (0.050%) Oracle Financials
7 4 (0.050%) Oracle Retail
7 4 (0.050%) SAP Hybris
7 4 (0.050%) SDL Web 8
8 3 (0.037%) LatentZero
8 3 (0.037%) Oracle CRM
8 3 (0.037%) PeopleSoft Financials
8 3 (0.037%) SAP Oil and Gas
8 3 (0.037%) Siebel CRM
9 2 (0.025%) Bloomberg AIM
9 2 (0.025%) Unica
Cloud Services
1 1,602 (20.00%) Amazon AWS
2 1,261 (15.74%) Microsoft Azure
3 288 (3.59%) GitHub
4 222 (2.77%) Serverless
5 198 (2.47%) Google Cloud Platform
6 158 (1.97%) npm
7 143 (1.78%) Amazon EC2
8 112 (1.40%) PaaS
9 93 (1.16%) AWS Lambda
10 88 (1.10%) OpenShift
11 87 (1.09%) Heroku
12 77 (0.96%) Cloud Computing
13 74 (0.92%) SaaS
14 65 (0.81%) Amazon SQS
15 63 (0.79%) Slack
16 58 (0.72%) Amazon S3
17 41 (0.51%) Azure Functions
18 39 (0.49%) IaaS
19 34 (0.42%) Yarn
20 31 (0.39%) Sauce Labs
Communications & Networking
1 258 (3.22%) HTTP
2 90 (1.12%) Internet
3 81 (1.01%) TCP/IP
4 58 (0.72%) SSL
5 49 (0.61%) AMQP
6 31 (0.39%) FTP
7 26 (0.32%) DNS
8 25 (0.31%) SMS
9 21 (0.26%) Firewall
10 19 (0.24%) Software-Defined Networking
11 18 (0.22%) Kerberos
12 16 (0.20%) HTTPS
13 12 (0.15%) Skype
13 12 (0.15%) VPN
14 10 (0.12%) Broadband
14 10 (0.12%) Network Security
14 10 (0.12%) Reverse Proxy
15 8 (0.100%) LAN
15 8 (0.100%) SSH
16 6 (0.075%) SMTP
Database & Business Intelligence
1 925 (11.55%) SQL Server
2 885 (11.05%) NoSQL
3 626 (7.81%) PostgreSQL
4 578 (7.21%) MySQL
5 572 (7.14%) MongoDB
6 470 (5.87%) Relational Database
7 331 (4.13%) Big Data
8 307 (3.83%) Hadoop
9 283 (3.53%) Apache Cassandra
10 155 (1.93%) Redis
11 116 (1.45%) HBase
12 102 (1.27%) Data Warehouse
13 101 (1.26%) RDBMS
14 98 (1.22%) Couchbase
15 95 (1.19%) Apache Hive
16 93 (1.16%) Amazon DynamoDB
17 92 (1.15%) Azure SQL Database
18 74 (0.92%) SQL Server 2012
19 65 (0.81%) SQL Server Integration Services
20 56 (0.70%) SQL Server 2014
Development Applications
1 2,019 (25.20%) Git (software)
2 1,538 (19.20%) Jenkins
3 885 (11.05%) JIRA
4 818 (10.21%) Maven
5 758 (9.46%) Selenium
6 607 (7.58%) Cucumber
7 547 (6.83%) JUnit
8 333 (4.16%) TeamCity
9 331 (4.13%) Subversion
10 303 (3.78%) NUnit
11 288 (3.59%) webpack
12 278 (3.47%) Mockito
13 238 (2.97%) Team Foundation Server
14 225 (2.81%) gulp
15 223 (2.78%) Gradle
16 205 (2.56%) WebDriver
17 200 (2.50%) Jasmine
18 199 (2.48%) Visual Studio
19 196 (2.45%) Bitbucket
20 195 (2.43%) Octopus Deploy
General
1 1,397 (17.44%) Finance
2 658 (8.21%) Banking
3 285 (3.56%) Retail
4 233 (2.91%) Front Office
5 211 (2.63%) Telecoms
6 185 (2.31%) Marketing
7 177 (2.21%) Games
8 175 (2.18%) Investment Banking
9 120 (1.50%) Manufacturing
10 115 (1.44%) Electronics
11 76 (0.95%) Law
12 74 (0.92%) Publishing
13 62 (0.77%) Financial Institution
14 60 (0.75%) Advertising
15 57 (0.71%) Back Office
16 41 (0.51%) Automotive
17 27 (0.34%) Legal
18 23 (0.29%) Retail Banking
19 11 (0.14%) Pharmaceutical
20 9 (0.11%) Billing
Job Titles
1 6,101 (76.15%) Developer
2 2,164 (27.01%) Java Developer
3 955 (11.92%) Senior Developer
4 953 (11.89%) .NET Developer
5 733 (9.15%) C# Developer
6 586 (7.31%) React Developer
7 559 (6.98%) Front End Developer (Client-Side Developer)
8 515 (6.43%) JavaScript Developer
9 414 (5.17%) Full Stack Developer
10 382 (4.77%) Senior Java Developer
11 373 (4.66%) Agile Developer
12 364 (4.54%) Angular Developer
13 361 (4.51%) C# .NET Developer
14 278 (3.47%) Software Engineer
15 236 (2.95%) AWS Developer
16 234 (2.92%) Lead Developer
17 201 (2.51%) Node.js Developer
18 199 (2.48%) Python Developer
19 198 (2.47%) Scala Developer
20 194 (2.42%) Architect
Libraries, Frameworks & Software Standards
1 1,766 (22.04%) .NET
2 1,738 (21.69%) HTML
3 1,686 (21.04%) Spring
4 1,639 (20.46%) CSS
5 1,611 (20.11%) AngularJS
6 1,431 (17.86%) REST
7 1,384 (17.27%) RESTful
8 1,298 (16.20%) React
9 1,281 (15.99%) Web Services
10 1,199 (14.97%) Node.js
11 946 (11.81%) Spring Boot
12 934 (11.66%) HTML5
13 706 (8.81%) ASP.NET
14 673 (8.40%) JSON
15 670 (8.36%) Hibernate
16 631 (7.88%) ASP.NET Web API
17 586 (7.31%) SOAP
18 585 (7.30%) CSS3
19 511 (6.38%) jQuery
20 485 (6.05%) .NET Framework
Miscellaneous
1 1,016 (12.68%) Greenfield Project
2 549 (6.85%) User Experience
3 362 (4.52%) Fintech
4 336 (4.19%) Mobile App
5 293 (3.66%) Analytical Skills
6 269 (3.36%) Computer Science
7 149 (1.86%) Enterprise Software
8 145 (1.81%) Data Structures
9 144 (1.80%) Algorithms
10 134 (1.67%) Fixed Income
11 121 (1.51%) Derivative
12 118 (1.47%) Self-Motivation
13 108 (1.35%) Foreign Exchange (FX)
14 96 (1.20%) Equities
15 93 (1.16%) iPad
16 68 (0.85%) Cloud Native
17 61 (0.76%) Virtual Team
18 56 (0.70%) Public Cloud
18 56 (0.70%) Video on Demand
19 47 (0.59%) Video\Live Streaming
Operating Systems
1 736 (9.19%) Linux
2 389 (4.86%) Unix
3 289 (3.61%) Apple iOS
4 278 (3.47%) Android
5 275 (3.43%) Windows
6 50 (0.62%) Red Hat Enterprise Linux
7 47 (0.59%) Windows Server
8 40 (0.50%) Mac OS X
9 36 (0.45%) VMS
10 30 (0.37%) Mac OS
11 17 (0.21%) Solaris
12 13 (0.16%) CentOS
13 8 (0.100%) Windows 7
14 7 (0.087%) Windows 8
15 6 (0.075%) Ubuntu
16 5 (0.062%) Embedded Linux
17 4 (0.050%) Oracle Linux
18 3 (0.037%) DC/OS
18 3 (0.037%) Windows Server 2003
19 2 (0.025%) CoreOS
Processes & Methodologies
1 5,953 (74.30%) Agile Software Development
2 3,301 (41.20%) BDD
3 2,263 (28.25%) Scrum
4 2,110 (26.34%) Continuous Integration
5 1,965 (24.53%) Microservices
6 1,705 (21.28%) Test Automation
7 1,321 (16.49%) DevOps
8 1,172 (14.63%) MVC
9 1,108 (13.83%) OO
10 1,093 (13.64%) Kanban
11 1,025 (12.79%) Software Engineering
12 825 (10.30%) Pair Programming
13 803 (10.02%) Unit Testing
14 800 (9.99%) Front End Development
15 638 (7.96%) SOA
16 633 (7.90%) Continuous Delivery
17 632 (7.89%) E-Commerce
18 510 (6.37%) Problem-Solving
19 478 (5.97%) Open Source
20 453 (5.65%) SDLC
Programming Languages
1 3,572 (44.58%) Java
2 2,932 (36.60%) JavaScript
3 1,802 (22.49%) C#
4 1,463 (18.26%) SQL
5 1,195 (14.92%) Java 8
6 862 (10.76%) Python
7 522 (6.52%) Scala
8 426 (5.32%) TypeScript
9 394 (4.92%) Ruby
10 352 (4.39%) ES6
11 295 (3.68%) PHP
12 232 (2.90%) Groovy
13 185 (2.31%) Apple Swift
14 173 (2.16%) T-SQL
15 143 (1.78%) Go
16 140 (1.75%) Kotlin
17 137 (1.71%) Bash Shell
18 128 (1.60%) C++
19 106 (1.32%) Objective-C
20 95 (1.19%) Perl
Qualifications
1 392 (4.89%) Security Cleared
2 381 (4.76%) Degree
3 314 (3.92%) SC Cleared
4 120 (1.50%) Computer Science Degree
5 111 (1.39%) BPSS Clearance
6 61 (0.76%) ISTQB
7 47 (0.59%) ISEB
8 26 (0.32%) Master's Degree
9 21 (0.26%) DV Cleared
9 21 (0.26%) Numerate Degree
10 15 (0.19%) ISTQB Foundation Certification
11 13 (0.16%) BC Cleared
12 12 (0.15%) AWS Certification
12 12 (0.15%) DBS Check
13 10 (0.12%) PhD
14 9 (0.11%) CTC Cleared
15 8 (0.100%) PMI Certification
16 6 (0.075%) CITP
16 6 (0.075%) ISEB Practitioner
16 6 (0.075%) PMP
Quality Assurance & Compliance
1 507 (6.33%) QA
2 29 (0.36%) PMO
3 22 (0.27%) Data Quality
4 16 (0.20%) WCAG
5 14 (0.17%) GDPR
5 14 (0.17%) PCI DSS
6 12 (0.15%) Disclosure Scotland
7 11 (0.14%) ISO/IEC 27001
7 11 (0.14%) MiFID
8 10 (0.12%) EMIR
9 8 (0.100%) SLA
10 3 (0.037%) ISO 20022
10 3 (0.037%) PSD2
11 2 (0.025%) Dodd-Frank
11 2 (0.025%) HL7
11 2 (0.025%) ISO 9001
11 2 (0.025%) WAI
12 1 (0.012%) DICOM
12 1 (0.012%) ECSS
12 1 (0.012%) Solvency II
System Software
1 1,357 (16.94%) Docker
2 66 (0.82%) VMware Infrastructure
3 65 (0.81%) HDFS
4 51 (0.64%) Apache ZooKeeper
4 51 (0.64%) vSphere
5 21 (0.26%) Active Directory
6 20 (0.25%) Virtual Machines
7 11 (0.14%) VirtualBox
8 6 (0.075%) Apache Flume
8 6 (0.075%) LXC
9 4 (0.050%) Platform Symphony
10 3 (0.037%) Firmware
10 3 (0.037%) OpenAM
11 2 (0.025%) KVM
11 2 (0.025%) Microsoft App-V
11 2 (0.025%) Postfix
12 1 (0.012%) Ceph
12 1 (0.012%) IAG
12 1 (0.012%) OpenIDM
12 1 (0.012%) vCloud
Systems Management
1 553 (6.90%) Ansible
2 515 (6.43%) Kubernetes
3 393 (4.91%) Puppet
4 339 (4.23%) Opscode Chef
5 236 (2.95%) Terraform
6 71 (0.89%) Mesos
7 69 (0.86%) Kibana
8 62 (0.77%) Cobbler
9 58 (0.72%) Hadoop YARN
10 51 (0.64%) Grafana
11 44 (0.55%) logstash
12 27 (0.34%) Single Sign-On
13 26 (0.32%) HP Quality Center
14 24 (0.30%) Consul
14 24 (0.30%) Prometheus
15 23 (0.29%) Packer
16 18 (0.22%) Docker Swarm
16 18 (0.22%) ZABBIX
17 17 (0.21%) Oozie
18 16 (0.20%) Business Desktop Deployment
Vendors
1 632 (7.89%) Oracle
2 524 (6.54%) Microsoft
3 263 (3.28%) Google
4 126 (1.57%) SAP
5 110 (1.37%) IBM
6 87 (1.09%) WSO2
7 86 (1.07%) Atlassian
8 74 (0.92%) Splunk
9 73 (0.91%) Sitecore
10 71 (0.89%) VMware
11 68 (0.85%) Adobe
12 62 (0.77%) Zend
13 55 (0.69%) Red Hat
14 52 (0.65%) Sybase
15 47 (0.59%) Apple
16 43 (0.54%) TIBCO
17 38 (0.47%) Cloudera
17 38 (0.47%) Informatica
17 38 (0.47%) Xamarin
18 37 (0.46%) MuleSoft