TDD Contracts in the City of London

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 3 months to 24 June 2017 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 / City of London
Location	3 months to 24 Jun 2017	Same period 2016	Same period 2015
Rank	10	10	20
Rank change year-on-year	0	+10
Contract jobs citing TDD	356	364	432
As % of all contract IT jobs advertised in the City of London	10.90%	10.76%	7.42%
As % of the Processes & Methodologies category	12.37%	12.52%	9.16%
Number of daily rates quoted	318	341	382
Median daily rate	£525	£500	£480
Median daily rate % change year-on-year	+5.00%	+4.16%
90% offered a daily rate of more than	£400	£400	£375
10% offered a daily rate of more than	£633	£625	£600
UK excluding London median daily rate	£420	£413	£375
% change year-on-year	+1.81%	+10.00%
Number of hourly rates quoted	0	0	0
Median hourly rate	-	-	-
UK excluding London median hourly rate	£41.50	£40.00	£42.50
% change year-on-year	+3.75%	-5.88%

TDD is in the process and methodology skills category. The next 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 and methodology skills.

Contract Process & Methodology Skills City of London
Contract job vacancies with a requirement for process and methodology skills	2879	2907	4718
As % of all contract IT job vacancies advertised in the City of London	88.15%	85.93%	81.07%
Number of daily rates quoted	2210	2380	3714
Median daily rate	£500	£475	£473
Median daily rate % change year-on-year	+5.26%	+0.52%
90% offered a daily rate of more than	£350	£335	£325
10% offered a daily rate of more than	£650	£625	£625
UK excluding London median daily rate	£415	£400	£380
% change year-on-year	+3.75%	+5.26%
Number of hourly rates quoted	23	24	55
Median hourly rate	£20.00	£19.00	£24.50
Median hourly rate % change year-on-year	+5.26%	-22.44%
90% offered a hourly rate of more than	£14.75	£12.50	£15.00
10% offered a hourly rate of more than	£41.00	£31.50	£56.20
UK excluding London median hourly rate	£34.00	£28.50	£30.00
% change year-on-year	+19.29%	-5.00%

TDD
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing TDD as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

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 3 months to 24 June 2017.

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
Top 30 Co-occurring IT Skills in the City of London

For the 6 months to 24 June 2017, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for TDD.

1	519 (76.66%)	Agile Software Development
2	319 (47.12%)	Java
3	296 (43.72%)	BDD
4	256 (37.81%)	JavaScript
5	202 (29.84%)	Scrum
6	192 (28.36%)	Finance
7	174 (25.70%)	C#
8	155 (22.90%)	HTML
9	149 (22.01%)	CSS
10	144 (21.27%)	AngularJS
11	138 (20.38%)	OO
11	138 (20.38%)	Continuous Integration
12	136 (20.09%)	Test Automation
12	136 (20.09%)	Banking
13	125 (18.46%)	MVC

14	122 (18.02%)	React
15	116 (17.13%)	Spring
16	115 (16.99%)	Node.js
17	114 (16.84%)	SQL
18	111 (16.40%)	REST
19	110 (16.25%)	Web Services
20	109 (16.10%)	Microservices
21	106 (15.66%)	DevOps
22	105 (15.51%)	SQL Server
23	103 (15.21%)	.NET
24	101 (14.92%)	Pair Programming
25	97 (14.33%)	Git (software)
26	96 (14.18%)	Amazon AWS
26	96 (14.18%)	NoSQL
27	94 (13.88%)	Scala

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
Applications
Business Applications
Cloud Services
Communications & Networking
Database & Business Intelligence
Development Applications
General
Job Titles
Libraries, Frameworks & Software Standards
Miscellaneous
Operating Systems
Processes & Methodologies
Programming Languages
Qualifications
Quality Assurance & Compliance
System Software
Systems Management
Vendors

Application Platforms
1	42 (6.20%)	Apache Spark
2	23 (3.40%)	Elasticsearch
3	22 (3.25%)	Apache
4	18 (2.66%)	IIS
5	17 (2.51%)	SharePoint
6	16 (2.36%)	BizTalk Server
7	14 (2.07%)	Confluence
7	14 (2.07%)	Mule
7	14 (2.07%)	Tomcat
8	10 (1.48%)	JBoss
9	8 (1.18%)	WebLogic
10	7 (1.03%)	Cloud Foundry
11	5 (0.74%)	Apache Solr
12	4 (0.59%)	CMS
13	3 (0.44%)	Apache Pig
13	3 (0.44%)	DataSynapse
13	3 (0.44%)	EPiServer
13	3 (0.44%)	Oracle Coherence
13	3 (0.44%)	Sitecore CMS
14	2 (0.30%)	Drupal

Applications
1	4 (0.59%)	Microsoft Office
2	2 (0.30%)	Photoshop
3	1 (0.15%)	Microsoft Excel
3	1 (0.15%)	MS Visio

Business Applications
1	19 (2.81%)	Dynamics CRM
2	16 (2.36%)	Dynamics AX
3	3 (0.44%)	Eloqua
3	3 (0.44%)	ION MarketView
4	1 (0.15%)	Actimize
4	1 (0.15%)	Endur
4	1 (0.15%)	Magento
4	1 (0.15%)	Payment Gateway
4	1 (0.15%)	RMDS

Cloud Services
1	96 (14.18%)	Amazon AWS
2	56 (8.27%)	Microsoft Azure
3	21 (3.10%)	PaaS
4	19 (2.81%)	GitHub
4	19 (2.81%)	IaaS
5	8 (1.18%)	AWS CloudFormation
6	7 (1.03%)	Slack
7	5 (0.74%)	Amazon EC2
8	4 (0.59%)	Heroku
8	4 (0.59%)	TestFlight
9	3 (0.44%)	AWS Lambda
9	3 (0.44%)	Google Play
10	2 (0.30%)	BrowserStack
10	2 (0.30%)	OpenShift
10	2 (0.30%)	SaaS
10	2 (0.30%)	vREST
11	1 (0.15%)	AWS Elastic Beanstalk
11	1 (0.15%)	CloudBees
11	1 (0.15%)	Google Cloud Platform
11	1 (0.15%)	Salesforce Service Cloud

Communications & Networking
1	20 (2.95%)	HTTP
2	5 (0.74%)	Internet
3	4 (0.59%)	DNS
4	3 (0.44%)	FTP
4	3 (0.44%)	SSL
4	3 (0.44%)	TCP/IP
5	2 (0.30%)	LDAP
6	1 (0.15%)	Bluetooth
6	1 (0.15%)	Intranet
6	1 (0.15%)	Kerberos
6	1 (0.15%)	LAN
6	1 (0.15%)	Network Security
6	1 (0.15%)	RTP
6	1 (0.15%)	RTSP
6	1 (0.15%)	SNMP
6	1 (0.15%)	WAN

Database & Business Intelligence
1	105 (15.51%)	SQL Server
2	96 (14.18%)	NoSQL
3	86 (12.70%)	MongoDB
4	58 (8.57%)	Apache Cassandra
5	45 (6.65%)	MySQL
6	41 (6.06%)	Big Data
7	36 (5.32%)	Hadoop
8	31 (4.58%)	SQL Server Integration Services
9	30 (4.43%)	Relational Database
10	25 (3.69%)	SQL Server 2008
11	19 (2.81%)	SQL Server 2016
12	18 (2.66%)	PostgreSQL
13	14 (2.07%)	SQL Server 2012
14	11 (1.62%)	Hazelcast
15	10 (1.48%)	CouchDB
16	9 (1.33%)	HBase
16	9 (1.33%)	SQLite
17	7 (1.03%)	Couchbase
18	6 (0.89%)	MarkLogic
19	5 (0.74%)	QlikView

Development Applications
1	97 (14.33%)	Git (software)
2	78 (11.52%)	Jenkins
3	69 (10.19%)	JIRA
4	56 (8.27%)	Selenium
5	54 (7.98%)	Cucumber
6	42 (6.20%)	Jasmine
7	41 (6.06%)	gulp
8	40 (5.91%)	Maven
9	39 (5.76%)	Grunt
10	36 (5.32%)	Team Foundation Server
11	33 (4.87%)	JUnit
12	29 (4.28%)	webpack
13	26 (3.84%)	WebDriver
14	24 (3.55%)	TeamCity
15	23 (3.40%)	IntelliJ
15	23 (3.40%)	Mocha
15	23 (3.40%)	Mockito
16	22 (3.25%)	SpecFlow
17	18 (2.66%)	Moq
18	17 (2.51%)	NUnit

General
1	192 (28.36%)	Finance
2	136 (20.09%)	Banking
3	52 (7.68%)	Front Office
4	45 (6.65%)	Investment Banking
5	26 (3.84%)	Retail
6	14 (2.07%)	Advertising
7	12 (1.77%)	Marketing
8	10 (1.48%)	Games
8	10 (1.48%)	Publishing
9	8 (1.18%)	Retail Banking
9	8 (1.18%)	Telecoms
10	4 (0.59%)	Digital Economy
10	4 (0.59%)	Law
10	4 (0.59%)	Legal
11	3 (0.44%)	Corporate Banking
12	2 (0.30%)	Automotive
12	2 (0.30%)	Back Office
12	2 (0.30%)	Wholesale Banking
13	1 (0.15%)	Financial Institution

Job Titles
1	543 (80.21%)	Developer
2	189 (27.92%)	Java Developer
3	141 (20.83%)	Senior Developer
4	73 (10.78%)	C# Developer
5	63 (9.31%)	Senior Java Developer
6	62 (9.16%)	Full Stack Developer
7	48 (7.09%)	JavaScript Developer
8	45 (6.65%)	Scala Developer
9	43 (6.35%)	Agile Developer
10	41 (6.06%)	Front End Developer (Client-Side Developer)
11	38 (5.61%)	.NET Developer
12	33 (4.87%)	WPF Developer
13	31 (4.58%)	Agile Java Developer
14	27 (3.99%)	Analyst
14	27 (3.99%)	Node.js Developer
15	24 (3.55%)	Angular Developer
15	24 (3.55%)	C# WPF Developer
15	24 (3.55%)	Python Developer
16	22 (3.25%)	Senior Scala Developer
17	21 (3.10%)	Senior C# Developer

Libraries, Frameworks & Software Standards
1	155 (22.90%)	HTML
2	149 (22.01%)	CSS
3	144 (21.27%)	AngularJS
4	122 (18.02%)	React
5	116 (17.13%)	Spring
6	115 (16.99%)	Node.js
7	111 (16.40%)	REST
8	110 (16.25%)	Web Services
9	103 (15.21%)	.NET
10	93 (13.74%)	HTML5
11	77 (11.37%)	RESTful
12	63 (9.31%)	WPF
13	62 (9.16%)	WCF
14	51 (7.53%)	ASP.NET
15	50 (7.39%)	jQuery
16	49 (7.24%)	JSON
17	47 (6.94%)	SOAP
18	41 (6.06%)	CSS3
19	37 (5.47%)	Redux
20	36 (5.32%)	Entity Framework

Miscellaneous
1	57 (8.42%)	Greenfield Project
2	46 (6.79%)	User Experience
3	42 (6.20%)	Fintech
4	37 (5.47%)	Mobile App
5	29 (4.28%)	Foreign Exchange (FX)
6	25 (3.69%)	Computer Science
7	19 (2.81%)	Public Cloud
8	17 (2.51%)	Client/Server
9	15 (2.22%)	Analytical Skills
9	15 (2.22%)	Data Structures
9	15 (2.22%)	Hedge funds
10	14 (2.07%)	Derivative
11	13 (1.92%)	Credit Risk
11	13 (1.92%)	Enterprise Software
12	11 (1.62%)	iPad
13	10 (1.48%)	Market Risk
13	10 (1.48%)	NHS
14	9 (1.33%)	Algorithms
14	9 (1.33%)	Equities
14	9 (1.33%)	Fixed Income

Operating Systems
1	66 (9.75%)	Linux
2	45 (6.65%)	Windows
3	36 (5.32%)	Unix
4	31 (4.58%)	Apple iOS
5	29 (4.28%)	Android
6	10 (1.48%)	Windows Server
7	5 (0.74%)	Red Hat Enterprise Linux
8	3 (0.44%)	CoreOS
9	2 (0.30%)	Windows Server 2012
10	1 (0.15%)	Mac OS X
10	1 (0.15%)	Ubuntu
10	1 (0.15%)	Windows Server 2008

Processes & Methodologies
1	519 (76.66%)	Agile Software Development
2	296 (43.72%)	BDD
3	202 (29.84%)	Scrum
4	138 (20.38%)	Continuous Integration
4	138 (20.38%)	OO
5	136 (20.09%)	Test Automation
6	125 (18.46%)	MVC
7	109 (16.10%)	Microservices
8	106 (15.66%)	DevOps
9	101 (14.92%)	Pair Programming
10	92 (13.59%)	Kanban
11	83 (12.26%)	Multithreading
11	83 (12.26%)	Software Engineering
12	73 (10.78%)	E-Commerce
13	72 (10.64%)	Front End Development
14	70 (10.34%)	Unit Testing
15	60 (8.86%)	SOLID
16	53 (7.83%)	Open Source
16	53 (7.83%)	SOA
17	49 (7.24%)	Web Development

Programming Languages
1	319 (47.12%)	Java
2	256 (37.81%)	JavaScript
3	174 (25.70%)	C#
4	114 (16.84%)	SQL
5	94 (13.88%)	Scala
6	62 (9.16%)	Python
7	31 (4.58%)	Groovy
8	25 (3.69%)	ES6
9	23 (3.40%)	Apple Swift
9	23 (3.40%)	Objective-C
10	22 (3.25%)	TypeScript
11	21 (3.10%)	Go
11	21 (3.10%)	Ruby
12	15 (2.22%)	T-SQL
13	13 (1.92%)	Bash Shell
14	12 (1.77%)	C++
15	10 (1.48%)	PHP
16	9 (1.33%)	PL/SQL
17	8 (1.18%)	Shell Script
18	7 (1.03%)	Kotlin

Qualifications
1	27 (3.99%)	Degree
2	10 (1.48%)	Computer Science Degree
2	10 (1.48%)	Security Cleared
3	6 (0.89%)	SC Cleared
4	3 (0.44%)	ISEB
5	2 (0.30%)	DV Cleared
5	2 (0.30%)	ISTQB
6	1 (0.15%)	BPSS Clearance
6	1 (0.15%)	CFA
6	1 (0.15%)	ISTQB Advanced Certification
6	1 (0.15%)	ISTQB Foundation Certification
6	1 (0.15%)	Numerate Degree

Quality Assurance & Compliance
1	54 (7.98%)	QA
2	7 (1.03%)	MiFID
3	2 (0.30%)	Dodd-Frank
4	1 (0.15%)	IFRS
4	1 (0.15%)	IFRS 9

System Software
1	52 (7.68%)	Docker
2	8 (1.18%)	HDFS
3	4 (0.59%)	Apache ZooKeeper
4	2 (0.30%)	vCloud
4	2 (0.30%)	VMware Infrastructure
5	1 (0.15%)	Active Directory
5	1 (0.15%)	Varnish

Systems Management
1	30 (4.43%)	Puppet
2	23 (3.40%)	Opscode Chef
3	13 (1.92%)	Ansible
4	12 (1.77%)	Kubernetes
5	6 (0.89%)	Nagios
5	6 (0.89%)	Terraform
6	5 (0.74%)	Graphite
7	4 (0.59%)	HAProxy
7	4 (0.59%)	logstash
8	3 (0.44%)	Docker Swarm
9	2 (0.30%)	Control-M
9	2 (0.30%)	Grafana
9	2 (0.30%)	Kibana
9	2 (0.30%)	Mesos
10	1 (0.15%)	BladeLogic
10	1 (0.15%)	HP SiteScope
10	1 (0.15%)	OpenIDM
10	1 (0.15%)	ZABBIX

Vendors
1	41 (6.06%)	Microsoft
2	21 (3.10%)	New Relic
3	20 (2.95%)	Oracle
4	14 (2.07%)	Google
5	9 (1.33%)	IBM
6	8 (1.18%)	Telerik
7	7 (1.03%)	Xamarin
8	6 (0.89%)	Atlassian
8	6 (0.89%)	Red Hat
9	5 (0.74%)	Apple
9	5 (0.74%)	Reuters
10	4 (0.59%)	ION Trading
10	4 (0.59%)	Sitecore
10	4 (0.59%)	Sybase
11	3 (0.44%)	CA Agile Central
11	3 (0.44%)	Marketo
11	3 (0.44%)	Salesforce.com
11	3 (0.44%)	Splunk
11	3 (0.44%)	Typemock
12	2 (0.30%)	FXall