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 26 June 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
East of England / Hertfordshire
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank 26 57 32
Rank change year-on-year +31 -25  
Permanent jobs citing TDD 180 94 203
As % of all permanent IT jobs advertised in Hertfordshire 8.53% 4.14% 7.05%
As % of the Processes & Methodologies category 9.75% 4.75% 8.19%
Number of salaries quoted 162 92 194
Median salary £48,750 £56,250 £50,000
Median salary % change year-on-year -13.33% +12.50%  
90% offered a salary of more than £37,500 £33,500 £35,000
10% offered a salary of more than £70,000 £70,000 £65,000
UK excluding London median salary £45,000 £45,000 £42,500
% change year-on-year - +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 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 1846 1978 2480
As % of all permanent IT job vacancies advertised in Hertfordshire 87.49% 87.17% 86.14%
Number of salaries quoted 1568 1620 1965
Median salary £50,000 £50,000 £47,500
Median salary % change year-on-year - +5.26%  
90% offered a salary of more than £32,500 £33,500 £31,000
10% offered a salary of more than £70,000 £67,500 £70,000
UK excluding London median salary £45,000 £45,000 £44,000
% change year-on-year - +2.27%  

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 26 June 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 26 June 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 +26 65 £50,000 -20.00% 6
St Albans -5 22 £65,000 - 6
Hemel Hempstead - 17 £52,500 - 2
Letchworth -2 14 £37,500 +11.94% 2
Broxbourne +9 11 £45,000 +5.88%
Hertford +5 10 £67,500 +3.84% 2
Bishop's Stortford +5 6 £42,500 - 1
Welwyn Garden City +3 6 - -
Stevenage - 5 £45,000 -
Hatfield -3 2 £70,000 +75.00% 2
Waltham Cross - 2 £35,000 - 1
Rickmansworth +3 1 £80,000 +88.23%
Hoddesdon - 1 £30,000 - 1
TDD
East of England

For the 6 months to 26 June 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.

1 333 (85.60%) Agile Software Development
2 229 (58.87%) .NET
3 227 (58.35%) C#
4 213 (54.76%) MVC
5 207 (53.21%) BDD
6 201 (51.67%) SQL Server
7 197 (50.64%) ASP.NET
8 183 (47.04%) Scrum
9 181 (46.53%) ASP.NET MVC
10 161 (41.39%) ASP.NET Web API
11 153 (39.33%) AngularJS
12 137 (35.22%) JavaScript
13 129 (33.16%) RESTful
14 126 (32.39%) Java
15 106 (27.25%) WCF
16 104 (26.74%) Web Application Development
17 103 (26.48%) Git (software)
18 97 (24.94%) ASP.NET MVC 5
19 96 (24.68%) OO
20 94 (24.16%) SQL
21 93 (23.91%) Unit Testing
22 90 (23.14%) Continuous Integration
22 90 (23.14%) Ruby
23 88 (22.62%) Node.js
24 83 (21.34%) Finance
25 77 (19.79%) NoSQL
26 75 (19.28%) Test Automation
27 74 (19.02%) .NET Framework
28 68 (17.48%) Entity Framework
29 67 (17.22%) QA

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 21 (5.40%) Tomcat
2 16 (4.11%) Confluence
3 14 (3.60%) CMS
4 11 (2.83%) WebLogic
5 10 (2.57%) IIS
6 5 (1.29%) Elasticsearch
6 5 (1.29%) JBoss
6 5 (1.29%) WebSphere
7 2 (0.51%) SharePoint
7 2 (0.51%) Sitecore CMS
8 1 (0.26%) Oracle SOA Suite
8 1 (0.26%) Umbraco
8 1 (0.26%) WebSphere Application Server
8 1 (0.26%) WordPress
Applications
1 3 (0.77%) Microsoft Excel
1 3 (0.77%) Microsoft Office
Business Applications
1 4 (1.03%) Magento
2 1 (0.26%) Payment Gateway
Cloud Services
1 27 (6.94%) Amazon AWS
2 25 (6.43%) Microsoft Azure
3 5 (1.29%) Google Play
3 5 (1.29%) SaaS
4 2 (0.51%) AWS Elastic Beanstalk
4 2 (0.51%) AWS Lambda
5 1 (0.26%) GitHub
Communications & Networking
1 17 (4.37%) Internet
2 7 (1.80%) iBeacon
3 3 (0.77%) Broadband
3 3 (0.77%) HTTP
Database & Business Intelligence
1 201 (51.67%) SQL Server
2 77 (19.79%) NoSQL
3 52 (13.37%) SQL Server 2014
4 46 (11.83%) SQL Server 2016
5 22 (5.66%) SQL Server 2012
6 14 (3.60%) Relational Database
7 9 (2.31%) SQL Server Integration Services
7 9 (2.31%) SQL Server Reporting Services
8 8 (2.06%) MongoDB
9 6 (1.54%) RDBMS
10 5 (1.29%) Apache Cassandra
11 4 (1.03%) Data Warehouse
11 4 (1.03%) Redis
12 3 (0.77%) Oracle Database
13 2 (0.51%) Amazon DynamoDB
14 1 (0.26%) MySQL
14 1 (0.26%) Oracle Database 11g
14 1 (0.26%) PostgreSQL
Development Applications
1 103 (26.48%) Git (software)
2 63 (16.20%) Selenium
3 60 (15.42%) Cucumber
3 60 (15.42%) Team Foundation Server
4 54 (13.88%) JIRA
5 50 (12.85%) NUnit
6 41 (10.54%) MSTest
7 39 (10.03%) WebDriver
8 31 (7.97%) Visual Studio
9 30 (7.71%) JUnit
10 28 (7.20%) Jenkins
11 27 (6.94%) JBehave
12 22 (5.66%) Maven
13 17 (4.37%) Protractor
14 16 (4.11%) TeamCity
15 15 (3.86%) HP UFT
16 14 (3.60%) Jasmine
17 12 (3.08%) Moq
18 11 (2.83%) SoapUI
19 9 (2.31%) Rhino Mocks
General
1 83 (21.34%) Finance
2 19 (4.88%) Games
3 12 (3.08%) Electronics
4 10 (2.57%) Music Industry
5 9 (2.31%) Retail
6 8 (2.06%) Legal
7 3 (0.77%) Manufacturing
7 3 (0.77%) Telecoms
8 2 (0.51%) Marketing
Job Titles
1 307 (78.92%) Developer
2 191 (49.10%) .NET Developer
3 82 (21.08%) C# Developer
4 66 (16.97%) C# .NET Developer
5 55 (14.14%) Java Developer
6 52 (13.37%) ASP.NET Developer
6 52 (13.37%) ASP.NET MVC Developer
6 52 (13.37%) C# ASP.NET Developer
7 49 (12.60%) Senior Developer
8 33 (8.48%) .NET Software Developer
9 32 (8.23%) Software Developer
10 28 (7.20%) Analyst
11 27 (6.94%) Social Media Developer
11 27 (6.94%) Test Analyst
12 25 (6.43%) Agile Developer
13 21 (5.40%) Developer in Test
14 20 (5.14%) Angular Developer
15 17 (4.37%) Automation Test Analyst
16 16 (4.11%) Java Engineer
16 16 (4.11%) QA Engineer
Libraries, Frameworks & Software Standards
1 229 (58.87%) .NET
2 197 (50.64%) ASP.NET
3 181 (46.53%) ASP.NET MVC
4 161 (41.39%) ASP.NET Web API
5 153 (39.33%) AngularJS
6 129 (33.16%) RESTful
7 106 (27.25%) WCF
8 97 (24.94%) ASP.NET MVC 5
9 88 (22.62%) Node.js
10 74 (19.02%) .NET Framework
11 68 (17.48%) Entity Framework
12 58 (14.91%) CSS
13 54 (13.88%) HTML
13 54 (13.88%) Web Services
14 49 (12.60%) Gherkin
15 47 (12.08%) KnockoutJS
16 39 (10.03%) jQuery
16 39 (10.03%) Spring
17 37 (9.51%) Twitter Bootstrap
17 37 (9.51%) XML
Miscellaneous
1 34 (8.74%) Greenfield Project
2 30 (7.71%) BBC
3 27 (6.94%) Social Media
4 22 (5.66%) Computer Science
5 17 (4.37%) Mobile App
6 13 (3.34%) User Experience
7 11 (2.83%) RIA
8 9 (2.31%) Tandem
9 7 (1.80%) Fintech
10 5 (1.29%) Algorithms
10 5 (1.29%) Data Structures
10 5 (1.29%) Kindle
11 4 (1.03%) iPhone
12 3 (0.77%) Life Science
12 3 (0.77%) W3C
13 2 (0.51%) Enterprise Software
13 2 (0.51%) Social Network
14 1 (0.26%) FMCG
Operating Systems
1 22 (5.66%) Android
2 20 (5.14%) Unix
3 18 (4.63%) Linux
4 16 (4.11%) Windows
5 11 (2.83%) Apple iOS
5 11 (2.83%) Mac OS X
6 1 (0.26%) Windows Server
Processes & Methodologies
1 333 (85.60%) Agile Software Development
2 213 (54.76%) MVC
3 207 (53.21%) BDD
4 183 (47.04%) Scrum
5 104 (26.74%) Web Application Development
6 96 (24.68%) OO
7 93 (23.91%) Unit Testing
8 90 (23.14%) Continuous Integration
9 75 (19.28%) Test Automation
10 50 (12.85%) ATDD
11 38 (9.77%) Kanban
12 37 (9.51%) Test Scripting
13 36 (9.25%) SDET
14 30 (7.71%) Software Engineering
15 29 (7.46%) Test Strategy
15 29 (7.46%) Web Development
16 23 (5.91%) Continuous Delivery
16 23 (5.91%) High Availability
16 23 (5.91%) Software Testing
17 20 (5.14%) OOP
Programming Languages
1 227 (58.35%) C#
2 137 (35.22%) JavaScript
3 126 (32.39%) Java
4 94 (24.16%) SQL
5 90 (23.14%) Ruby
6 27 (6.94%) T-SQL
7 18 (4.63%) Python
8 16 (4.11%) Shell Script
8 16 (4.11%) VB
9 15 (3.86%) VB.NET
10 14 (3.60%) TypeScript
11 12 (3.08%) XAML
12 9 (2.31%) F#
13 8 (2.06%) Objective-C
13 8 (2.06%) PL/SQL
14 6 (1.54%) PHP
15 5 (1.29%) Clojure
15 5 (1.29%) Go
15 5 (1.29%) Rust
16 4 (1.03%) PowerShell
Qualifications
1 20 (5.14%) Degree
2 6 (1.54%) Computer Science Degree
3 5 (1.29%) HND
4 2 (0.51%) ISEB
4 2 (0.51%) ISTQB
4 2 (0.51%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 67 (17.22%) QA
System Software
1 2 (0.51%) Docker
Systems Management
1 6 (1.54%) Ansible
1 6 (1.54%) Opscode Chef
2 5 (1.29%) Business Desktop Deployment
2 5 (1.29%) MOM
2 5 (1.29%) Puppet
3 4 (1.03%) Kibana
4 1 (0.26%) Capistrano
Vendors
1 52 (13.37%) Microsoft
2 36 (9.25%) Google
3 27 (6.94%) Apple
3 27 (6.94%) Facebook
3 27 (6.94%) Sony
3 27 (6.94%) Yahoo!
4 15 (3.86%) Oracle
5 14 (3.60%) Atlassian
5 14 (3.60%) Xamarin
6 6 (1.54%) Demandware
6 6 (1.54%) IBM
7 4 (1.03%) ATG
7 4 (1.03%) hybris
8 3 (0.77%) Virgin Media
9 2 (0.51%) Sitecore
Hemel Hempstead, Hertfordshire
Dawson & Walsh
Salary: £40000 - £65000 per annum + Bonus + Pension + Benefits
Posted: 15 hours ago
Hertford, Hertfordshire
Dawson & Walsh
Salary: £40000 - £55000 per annum + Bonus + Pension + Benefits
Posted: 16 hours ago
Waltham Cross, Hertfordshire
Dawson & Walsh
Salary: £30000 - £40000 per annum + Bonus + Pension + Benefits
Posted: 15 hours ago
St. Albans, Hertfordshire
Dawson & Walsh
Salary: £40000 - £80000 per annum + Bonus + Pension + Benefits
Posted: 16 hours ago
Watford, Hertfordshire
Dawson & Walsh
Salary: £30000 - £45000 per annum + Bonus + Pension + Benefits
Posted: 15 hours ago
Hertford, Hertfordshire
Understanding Recruitment
Salary: £65000 - £75000 per annum + be- 25 days holiday, flex hours
Posted: 15 hours ago
Watford, Hertfordshire
Spring Technology
Salary: Bonus
Posted: 10 hours ago
Bishop's Stortford, Hertfordshire
Dawson & Walsh
Salary: £40000 - £50000 per annum + Bonus + Pension + Benefits
Posted: 16 hours ago
Hemel Hempstead, Hertfordshire
Dawson & Walsh
Salary: £20000 - £35000 per annum + Bonus + Pension + Benefits
Posted: 15 hours ago
St. Albans, Hertfordshire
Dawson & Walsh
Salary: £30000 - £40000 per annum + Bonus + Pension + Benefits
Posted: 16 hours ago
Letchworth Garden City, Hertfordshire
Understanding Recruitment
Salary: £35000 - £45000 per annum + benefits + bonus
Posted: Yesterday
Hoddesdon, Hertfordshire
Dawson & Walsh
Salary: £25000 - £35000 per annum + Bonus + Pension + Benefits
Posted: 15 hours ago
Watford, Hertfordshire
TechNET IT Recruitment Limited
Salary: Competitive
Posted: 22 hours ago
Letchworth Garden City, Hertfordshire
Dawson & Walsh
Salary: £30000 - £45000 per annum + Bonus + Pension + Benefits
Posted: 3 days ago
St. Albans, Hertfordshire
Understanding Recruitment
Salary: £50000 - £70000 per annum + benefits
Posted: Yesterday
Watford, Hertfordshire
Capita Resourcing - IT Resourcing
Salary: £45000 - £55000 per annum + Benefits
Posted: 5 days ago
Watford, Hertfordshire
Evolution Recruitment Solutions
Salary: 40,000 - 50,000
Posted: 3 days ago
St. Albans, Hertfordshire
Resource Group
Salary: £50,000-£80,000 + Bonus & Benefits
Posted: 4 days ago
St. Albans, Hertfordshire
Net Recruit.co.uk Ltd
Salary: £22,000 - £29,000 DOE + Benefits
Posted: 4 days ago
Hitchin, Hertfordshire
Oscar
Salary: £20000 - £50000 per annum + Benefits
Posted: 4 days ago
St. Albans, Hertfordshire
Resource Group
Salary: £50,000-£80,000 + Bonus & Benefits
Posted: 4 days ago
Hertfordshire
Volt
Salary: £50000 - £65000 per annum + EXCELLENT BENEFITS
Posted: 4 days ago
Hatfield, Hertfordshire
Networking People
Salary: £55000 - £65000 per annum + Bens
Posted: 6 days ago
Watford, Hertfordshire
Verticality Ltd
Salary: £40000 - £55000 per annum, Benefits Bonus + Benefits Package
Posted: 5 days ago
Hatfield, Hertfordshire
Networking People
Salary: £65000 - £75000 per annum + Bens
Posted: 6 days ago