The following table provides summary statistics for permanent job vacancies advertised in Hertfordshire with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 3 months to 29 March 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
East of England / Hertfordshire
3 months to
29 Mar 2017
Same period 2016 Same period 2015
Rank 23 70 30
Rank change year-on-year +47 -40  
Permanent jobs citing TDD 212 89 197
As % of all permanent IT jobs advertised in Hertfordshire 9.50% 3.42% 8.23%
As % of the Processes & Methodologies category 10.79% 3.96% 10.12%
Number of salaries quoted 200 86 178
Median salary £45,000 £55,000 £50,000
Median salary % change year-on-year -18.18% +10.00%  
90% offered a salary of more than £35,000 £35,000 £35,000
10% offered a salary of more than £65,000 £80,000 £65,000
UK excluding London median salary £45,000 £45,000 £41,500
% change year-on-year - +8.43%  

TDD is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Hertfordshire with a requirement for process and methodology skills.

Process & Methodology Skills
Hertfordshire
Permanent job vacancies with a requirement for process and methodology skills 1964 2245 1947
As % of all permanent IT job vacancies advertised in Hertfordshire 87.99% 86.25% 81.29%
Number of salaries quoted 1636 1811 1521
Median salary £49,000 £52,318 £50,000
Median salary % change year-on-year -6.34% +4.63%  
90% offered a salary of more than £32,500 £32,500 £32,500
10% offered a salary of more than £70,000 £70,000 £75,000
UK excluding London median salary £45,000 £45,000 £43,000
% change year-on-year - +4.65%  

TDD
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for TDD in Hertfordshire

TDD
Salary Trend in Hertfordshire

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD in Hertfordshire.

Salary trend for TDD in Hertfordshire

TDD
Salary Histogram in Hertfordshire

The salary distribution of IT jobs citing TDD in Hertfordshire over the 3 months to 29 March 2017.

Salary histogram for TDD in Hertfordshire

TDD
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the Hertfordshire region over the 3 months to 29 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford +45 65 £42,500 +8.28% 7
St Albans -5 35 £50,000 -16.66% 2
Hemel Hempstead +24 24 £37,500 -16.66% 4
Letchworth - 24 £40,000 - 2
Stevenage +9 9 £55,000 +10.00%
Hoddesdon - 5 £30,000 - 1
Radlett - 5 £47,500 -
Rickmansworth -4 4 £67,500 +58.82% 1
Waltham Cross - 4 £70,000 -
Welwyn Garden City -5 3 £72,500 -19.44%
Broxbourne - 3 £45,000 -
Hertford -9 2 £70,000 +55.55%
TDD
East of England

For the 6 months to 29 March 2017, IT jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Hertfordshire region with a requirement for TDD.

1 321 (84.47%) Agile Software Development
2 229 (60.26%) .NET
3 224 (58.95%) C#
4 218 (57.37%) MVC
5 208 (54.74%) ASP.NET
6 202 (53.16%) SQL Server
7 192 (50.53%) BDD
8 191 (50.26%) ASP.NET MVC
9 183 (48.16%) Scrum
10 160 (42.11%) ASP.NET Web API
11 155 (40.79%) AngularJS
12 144 (37.89%) JavaScript
13 126 (33.16%) SQL
14 121 (31.84%) RESTful
15 115 (30.26%) Java
16 104 (27.37%) Git (software)
17 95 (25.00%) Web Application Development
18 92 (24.21%) .NET Framework
19 91 (23.95%) WCF
19 91 (23.95%) ASP.NET MVC 5
20 90 (23.68%) Unit Testing
20 90 (23.68%) Continuous Integration
21 86 (22.63%) Finance
22 83 (21.84%) Ruby
23 79 (20.79%) OO
23 79 (20.79%) Entity Framework
24 75 (19.74%) NoSQL
25 74 (19.47%) SQL Server 2014
26 73 (19.21%) Microsoft
27 71 (18.68%) Node.js

TDD
Co-occurring IT Skills in Hertfordshire 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 28 (7.37%) Tomcat
2 22 (5.79%) CMS
3 18 (4.74%) WebSphere
4 15 (3.95%) WebLogic
5 14 (3.68%) IIS
5 14 (3.68%) JBoss
6 13 (3.42%) Confluence
7 5 (1.32%) Elasticsearch
8 4 (1.05%) Adobe Experience Manager
8 4 (1.05%) Apache
8 4 (1.05%) MQSeries
8 4 (1.05%) Sitecore CMS
9 2 (0.53%) OpenStack
9 2 (0.53%) WordPress
10 1 (0.26%) NServiceBus
10 1 (0.26%) Oracle SOA Suite
10 1 (0.26%) SharePoint
Applications
1 42 (11.05%) MS Excel
2 8 (2.11%) MS Office
Business Applications
1 4 (1.05%) Magento
2 2 (0.53%) Payment Gateway
Cloud Services
1 26 (6.84%) Microsoft Azure
2 14 (3.68%) Amazon AWS
3 2 (0.53%) SaaS
4 1 (0.26%) GitHub
Communications & Networking
1 17 (4.47%) Internet
2 5 (1.32%) Wireshark
3 4 (1.05%) iBeacon
4 2 (0.53%) AMQP
5 1 (0.26%) 3GPP
5 1 (0.26%) LTE
5 1 (0.26%) Wireless
Database & Business Intelligence
1 202 (53.16%) SQL Server
2 75 (19.74%) NoSQL
3 74 (19.47%) SQL Server 2014
4 23 (6.05%) Relational Database
5 20 (5.26%) SQL Server 2012
6 17 (4.47%) SQL Server 2016
7 14 (3.68%) MongoDB
8 13 (3.42%) RDBMS
9 12 (3.16%) SQL Server Integration Services
9 12 (3.16%) SQL Server Reporting Services
10 10 (2.63%) MySQL
11 6 (1.58%) Big Data
12 4 (1.05%) Apache Cassandra
12 4 (1.05%) Data Warehouse
12 4 (1.05%) Jackrabbit
12 4 (1.05%) PostgreSQL
12 4 (1.05%) Redis
13 3 (0.79%) Data Mining
13 3 (0.79%) SQL Server 2008
14 2 (0.53%) RavenDB
Development Applications
1 104 (27.37%) Git (software)
2 70 (18.42%) Team Foundation Server
3 52 (13.68%) Selenium
4 48 (12.63%) NUnit
5 44 (11.58%) MSTest
6 43 (11.32%) WebDriver
7 42 (11.05%) JIRA
8 38 (10.00%) Cucumber
9 32 (8.42%) JUnit
10 26 (6.84%) Visual Studio
11 24 (6.32%) Maven
11 24 (6.32%) TeamCity
12 18 (4.74%) Jenkins
13 16 (4.21%) HP UFT
14 15 (3.95%) JBehave
14 15 (3.95%) Subversion
15 13 (3.42%) Moq
15 13 (3.42%) SoapUI
16 12 (3.16%) Protractor
16 12 (3.16%) ReSharper
General
1 86 (22.63%) Finance
2 15 (3.95%) Music Industry
3 11 (2.89%) Retail
4 10 (2.63%) Games
4 10 (2.63%) Legal
5 5 (1.32%) Electronics
6 3 (0.79%) Manufacturing
6 3 (0.79%) Marketing
7 1 (0.26%) Publishing
7 1 (0.26%) Telecoms
Job Titles
1 297 (78.16%) Developer
2 187 (49.21%) .NET Developer
3 86 (22.63%) C# Developer
4 72 (18.95%) C# .NET Developer
5 66 (17.37%) Senior Developer
6 62 (16.32%) ASP.NET MVC Developer
7 58 (15.26%) ASP.NET Developer
8 57 (15.00%) C# ASP.NET Developer
9 53 (13.95%) Java Developer
10 45 (11.84%) Analyst
11 33 (8.68%) Test Analyst
12 32 (8.42%) Software Developer
13 28 (7.37%) Agile Developer
14 27 (7.11%) Social Media Developer
15 25 (6.58%) Junior
15 25 (6.58%) Junior Developer
16 24 (6.32%) Angular Developer
17 23 (6.05%) Graduate Developer
17 23 (6.05%) Junior .NET Developer
17 23 (6.05%) Senior .NET Developer
Libraries, Frameworks & Software Standards
1 229 (60.26%) .NET
2 208 (54.74%) ASP.NET
3 191 (50.26%) ASP.NET MVC
4 160 (42.11%) ASP.NET Web API
5 155 (40.79%) AngularJS
6 121 (31.84%) RESTful
7 92 (24.21%) .NET Framework
8 91 (23.95%) ASP.NET MVC 5
8 91 (23.95%) WCF
9 79 (20.79%) Entity Framework
10 71 (18.68%) Node.js
11 55 (14.47%) Spring
12 54 (14.21%) HTML
12 54 (14.21%) KnockoutJS
13 53 (13.95%) CSS
14 52 (13.68%) XML
15 49 (12.89%) Twitter Bootstrap
16 45 (11.84%) Web Services
17 40 (10.53%) REST
18 37 (9.74%) Hibernate
Miscellaneous
1 28 (7.37%) BBC
2 27 (7.11%) Social Media
3 18 (4.74%) Computer Science
4 15 (3.95%) Tandem
5 12 (3.16%) Mobile App
6 9 (2.37%) Enterprise Software
7 7 (1.84%) User Experience
8 4 (1.05%) RIA
9 3 (0.79%) Fintech
9 3 (0.79%) iPad
9 3 (0.79%) Life Science
9 3 (0.79%) W3C
10 2 (0.53%) Analytical Skills
10 2 (0.53%) Client/Server
10 2 (0.53%) Virtual Team
11 1 (0.26%) Algorithms
11 1 (0.26%) Data Structures
11 1 (0.26%) FMCG
Operating Systems
1 37 (9.74%) Linux
2 33 (8.68%) Unix
3 27 (7.11%) Windows
4 15 (3.95%) Android
5 12 (3.16%) Apple iOS
6 6 (1.58%) Windows Server
7 5 (1.32%) Mac OS X
8 4 (1.05%) HPUX
8 4 (1.05%) Solaris
Processes & Methodologies
1 321 (84.47%) Agile Software Development
2 218 (57.37%) MVC
3 192 (50.53%) BDD
4 183 (48.16%) Scrum
5 95 (25.00%) Web Application Development
6 90 (23.68%) Continuous Integration
6 90 (23.68%) Unit Testing
7 79 (20.79%) OO
8 41 (10.79%) ATDD
9 40 (10.53%) Test Scripting
10 36 (9.47%) Kanban
11 35 (9.21%) Software Testing
12 29 (7.63%) Test Automation
13 27 (7.11%) SOA
14 25 (6.58%) High Availability
15 24 (6.32%) Dependency Injection
16 21 (5.53%) Automation Testing
16 21 (5.53%) Software Engineering
17 20 (5.26%) OOP
17 20 (5.26%) Web Development
Programming Languages
1 224 (58.95%) C#
2 144 (37.89%) JavaScript
3 126 (33.16%) SQL
4 115 (30.26%) Java
5 83 (21.84%) Ruby
6 35 (9.21%) T-SQL
7 28 (7.37%) Shell Script
8 27 (7.11%) VB
9 26 (6.84%) VB.NET
10 19 (5.00%) Python
11 9 (2.37%) Objective-C
11 9 (2.37%) TypeScript
12 8 (2.11%) Erlang
12 8 (2.11%) PowerShell
13 6 (1.58%) F#
13 6 (1.58%) PL/SQL
14 5 (1.32%) VBA
14 5 (1.32%) XAML
15 2 (0.53%) Perl
16 1 (0.26%) VBScript
Qualifications
1 21 (5.53%) Degree
2 14 (3.68%) ISEB
3 12 (3.16%) ISTQB
4 11 (2.89%) ISTQB Foundation Certification
5 2 (0.53%) Microsoft Certification
6 1 (0.26%) HND
6 1 (0.26%) PhD
Quality Assurance & Compliance
1 57 (15.00%) QA
2 15 (3.95%) SDET
System Software
1 2 (0.53%) Docker
Systems Management
1 5 (1.32%) Kibana
2 4 (1.05%) Business Desktop Deployment
2 4 (1.05%) MOM
3 3 (0.79%) Opscode Chef
4 2 (0.53%) Ansible
4 2 (0.53%) Capistrano
5 1 (0.26%) Puppet
Vendors
1 73 (19.21%) Microsoft
2 32 (8.42%) Google
3 27 (7.11%) Apple
3 27 (7.11%) Facebook
3 27 (7.11%) Sony
3 27 (7.11%) Yahoo!
4 16 (4.21%) Oracle
5 15 (3.95%) Atlassian
6 12 (3.16%) IBM
7 7 (1.84%) Talend
8 6 (1.58%) Sybase
8 6 (1.58%) Xamarin
9 4 (1.05%) ATG
9 4 (1.05%) Blue Martini
9 4 (1.05%) Sitecore
10 3 (0.79%) hybris
11 1 (0.26%) Intel
11 1 (0.26%) Snow
11 1 (0.26%) Virgin Media
Hemel Hempstead, Hertfordshire
Dawson & Walsh
Salary: £40000 - £65000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
Hemel Hempstead
Noir Consulting
Salary: £35000 - £40000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
Watford, Hertfordshire
Empiric.com
Salary: From £45,000 to £50,000 per annum + Benefits and Bonus
Posted: 15 hours ago
Watford, Hertfordshire
Dawson & Walsh
Salary: £30000 - £40000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
St. Albans, Hertfordshire
Dawson & Walsh
Salary: £40000 - £80000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
Letchworth Garden City, Hertfordshire
Understanding Recruitment
Salary: £25000 - £35000 per annum + benefits + bonus
Posted: 3 days ago
Hertfordshire
McGregor Boyall
Salary: £30000.00 - £55000.00 per annum
Posted: 2 days ago
Watford, Hertfordshire
Tiro Partners
Salary: £40000 - £60000 per annum
Posted: 2 days ago
Hemel Hempstead, Hertfordshire
Dawson & Walsh
Salary: £20000 - £35000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
St. Albans, Hertfordshire
Dawson & Walsh
Salary: £30000 - £40000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
Hoddesdon, Hertfordshire
Dawson & Walsh
Salary: £25000 - £35000 per annum + Bonus + Pension + Benefits
Posted: 2 days ago
Watford, Hertfordshire
Capita Resourcing - IT Resourcing
Salary: £45000 - £55000 per annum + Bonus, Benefits
Posted: 5 days ago
Hemel Hempstead, Hertfordshire
Pro-Quest Resourcing Ltd
Salary: £30000 - £40000 Per Annum + benefits
Posted: 5 days ago
Watford, Hertfordshire
Evolution Recruitment Solutions
Salary: 55,000 - 70,000
Posted: 2 days ago
Watford, Hertfordshire
Spring Technology
Salary: £45000.00 - £60000.00 per annum + bonus and benefits
Posted: 6 days ago
Rickmansworth, Hertfordshire
Darwin Recruitment
Salary: £70000.00 - £90000.00 per annum + Pension, Healthcare, Bonus
Posted: 6 days ago
Watford, Hertfordshire
Verticality Ltd
Salary: £40000 - £50000 per annum, Benefits Bonus + Benefits Package
Posted: 5 days ago
Letchworth Garden City
Applause IT Ltd
Salary: £32000 - £40000 per annum + Benefits
Posted: 16 days ago