Period
to 18 November 2017

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 6 months to 18 November 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
East of England > Hertfordshire
6 months to
18 Nov 2017
Same period 2016 Same period 2015
Rank 24 43 37
Rank change year-on-year +19 -6 +8
Permanent jobs citing TDD 382 238 337
As % of all permanent IT jobs advertised in Hertfordshire 8.76% 5.32% 6.25%
As % of the Processes & Methodologies category 10.35% 6.07% 7.14%
Number of salaries quoted 346 228 339
Hertfordshire median annual salary £47,500 £50,000 £50,000
Median salary % change year-on-year -5.00% - +5.26%
10th Percentile £32,500 £31,000 £31,000
90th Percentile £72,500 £72,500 £77,500
East of England median annual salary £49,500 £46,614 £47,500
% change year-on-year +6.19% -1.87% +5.56%

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

All Process and Methodology Skills
Hertfordshire
Permanent vacancies with a requirement for process or methodology skills 3690 3924 4721
As % of all permanent IT jobs advertised in Hertfordshire 84.61% 87.79% 87.49%
Number of salaries quoted 3111 3241 3834
Hertfordshire median annual salary £47,500 £50,000 £47,500
Median salary % change year-on-year -5.00% +5.26% +2.43%
10th Percentile £28,500 £27,500 £26,750
90th Percentile £71,250 £72,500 £71,250
East of England median annual salary £47,500 £45,000 £45,000
% change year-on-year +5.56% - +3.45%

TDD
Job Vacancy Trend in Hertfordshire

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

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 6 months to 18 November 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 6 months to 18 November 2017. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford +23 95 £45,000 -16.28% 10
St Albans +2 61 £65,000 +62.50% 4
Hemel Hempstead +48 51 £52,500 +40.00% 4
Hertford - 27 £70,000 -
Stevenage +19 24 £45,000 +12.50% 1
Letchworth +3 23 £35,000 +4.48% 2
Waltham Cross - 23 £35,000 - 1
Hatfield +21 15 £60,000 +17.07% 1
Bishop's Stortford - 11 £60,000 - 2
Broxbourne +7 9 £45,000 -5.26%
Hoddesdon - 6 £30,000 - 1
Welwyn Garden City -8 5 £60,000 -14.29% 3
Rickmansworth -7 2 £61,250 +11.36% 3
Hitchin -6 1 £37,500 -31.82% 1
TDD
East of England

For the 6 months to 18 November 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.

1 341 (89.27%) Agile Software Development
2 236 (61.78%) C#
3 229 (59.95%) .NET
4 222 (58.12%) BDD
5 206 (53.93%) MVC
6 194 (50.79%) ASP.NET
7 182 (47.64%) SQL Server
8 162 (42.41%) ASP.NET Web API
9 161 (42.15%) ASP.NET MVC
10 149 (39.01%) Web Application Development
11 147 (38.48%) WCF
12 142 (37.17%) RESTful
13 140 (36.65%) ASP.NET MVC 5
14 138 (36.13%) Node.js
15 135 (35.34%) Git (software)
15 135 (35.34%) OO
16 122 (31.94%) Ruby
17 120 (31.41%) JavaScript
18 119 (31.15%) Scrum
19 104 (27.23%) Java
20 101 (26.44%) SQL Server 2016
21 100 (26.18%) NoSQL
22 96 (25.13%) AngularJS
23 71 (18.59%) HTML
24 69 (18.06%) CSS
25 61 (15.97%) Web Services
26 54 (14.14%) SQL
26 54 (14.14%) Test Automation
27 53 (13.87%) Amazon AWS
27 53 (13.87%) Google

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 15 (3.93%) Confluence
2 13 (3.40%) Tomcat
3 8 (2.09%) CMS
4 7 (1.83%) IIS
5 6 (1.57%) Elasticsearch
5 6 (1.57%) Umbraco
6 4 (1.05%) WordPress
7 2 (0.52%) JBoss
7 2 (0.52%) WebLogic
7 2 (0.52%) WebSphere
8 1 (0.26%) Apache
8 1 (0.26%) Oracle SOA Suite
8 1 (0.26%) WebLogic Portal
Business Applications
1 4 (1.05%) Payment Gateway
2 1 (0.26%) Magento
Cloud Services
1 53 (13.87%) Amazon AWS
2 21 (5.50%) Google Play
3 15 (3.93%) AWS Lambda
3 15 (3.93%) Serverless
4 14 (3.66%) Microsoft Azure
4 14 (3.66%) SaaS
5 10 (2.62%) AWS Elastic Beanstalk
6 1 (0.26%) Amazon EC2
6 1 (0.26%) Cloud Computing
6 1 (0.26%) GitHub
Communications & Networking
1 16 (4.19%) Internet
2 6 (1.57%) Hyperconnected
3 5 (1.31%) Broadband
3 5 (1.31%) VPN
4 1 (0.26%) HTTP
4 1 (0.26%) iBeacon
4 1 (0.26%) Skype
Database & Business Intelligence
1 182 (47.64%) SQL Server
2 101 (26.44%) SQL Server 2016
3 100 (26.18%) NoSQL
4 36 (9.42%) SQL Server 2014
5 15 (3.93%) SQL Server 2012
6 14 (3.66%) Relational Database
7 10 (2.62%) Amazon DynamoDB
7 10 (2.62%) Redis
8 7 (1.83%) MongoDB
9 4 (1.05%) SQL Server Reporting Services
10 3 (0.79%) PostgreSQL
10 3 (0.79%) SQL Server Integration Services
11 2 (0.52%) Apache Cassandra
11 2 (0.52%) Oracle Database
12 1 (0.26%) Crystal Reports
12 1 (0.26%) DB2
12 1 (0.26%) MySQL
12 1 (0.26%) Oracle Reports
Development Applications
1 135 (35.34%) Git (software)
2 39 (10.21%) Selenium
3 38 (9.95%) Cucumber
4 36 (9.42%) Jenkins
5 34 (8.90%) JIRA
6 31 (8.12%) NUnit
7 19 (4.97%) WebDriver
8 18 (4.71%) Team Foundation Server
9 17 (4.45%) Moq
9 17 (4.45%) MSTest
10 15 (3.93%) Visual Studio
11 13 (3.40%) JUnit
12 11 (2.88%) Jasmine
12 11 (2.88%) JBehave
12 11 (2.88%) Rhino Mocks
13 10 (2.62%) TeamCity
14 9 (2.36%) Maven
14 9 (2.36%) Protractor
15 8 (2.09%) SpecFlow
16 7 (1.83%) Gradle
General
1 41 (10.73%) Finance
2 35 (9.16%) Games
3 20 (5.24%) Retail
4 9 (2.36%) Electronics
5 6 (1.57%) Marketing
6 5 (1.31%) Legal
6 5 (1.31%) Telecoms
7 4 (1.05%) Publishing
8 2 (0.52%) Automotive
8 2 (0.52%) Banking
Job Titles
1 309 (80.89%) Developer
2 184 (48.17%) .NET Developer
3 55 (14.40%) C# Developer
4 43 (11.26%) Java Developer
5 42 (10.99%) Senior Developer
6 40 (10.47%) .NET Software Developer
7 31 (8.12%) Social Media Developer
8 25 (6.54%) Software Developer
9 22 (5.76%) Team Leader
10 21 (5.50%) C# .NET Developer
11 20 (5.24%) Digital Developer
12 18 (4.71%) Java Team Leader
13 16 (4.19%) ASP.NET Developer
13 16 (4.19%) Development Team Leader
13 16 (4.19%) Java Engineer
13 16 (4.19%) Senior C# Developer
14 15 (3.93%) C# Software Developer
14 15 (3.93%) Ruby on Rails Developer
14 15 (3.93%) Software Engineer
15 14 (3.66%) C# ASP.NET Developer
Libraries, Frameworks & Software Standards
1 229 (59.95%) .NET
2 194 (50.79%) ASP.NET
3 162 (42.41%) ASP.NET Web API
4 161 (42.15%) ASP.NET MVC
5 147 (38.48%) WCF
6 142 (37.17%) RESTful
7 140 (36.65%) ASP.NET MVC 5
8 138 (36.13%) Node.js
9 96 (25.13%) AngularJS
10 71 (18.59%) HTML
11 69 (18.06%) CSS
12 61 (15.97%) Web Services
13 50 (13.09%) .NET Framework
14 48 (12.57%) XML
15 44 (11.52%) Entity Framework
16 43 (11.26%) REST
17 37 (9.69%) KnockoutJS
18 34 (8.90%) Gherkin
19 31 (8.12%) jQuery
19 31 (8.12%) Ninject
Miscellaneous
1 37 (9.69%) BBC
2 35 (9.16%) Mobile App
3 31 (8.12%) Social Media
4 24 (6.28%) Computer Science
4 24 (6.28%) Greenfield Project
5 23 (6.02%) Social Network
6 20 (5.24%) iPhone
6 20 (5.24%) User Experience
7 10 (2.62%) Analytical Skills
7 10 (2.62%) RIA
8 9 (2.36%) Algorithms
8 9 (2.36%) Tandem
9 7 (1.83%) Data Structures
10 5 (1.31%) Kindle
11 4 (1.05%) Fintech
12 3 (0.79%) Robotics
13 2 (0.52%) Enterprise Software
14 1 (0.26%) Online Games
Operating Systems
1 24 (6.28%) Android
2 22 (5.76%) Windows
3 21 (5.50%) Linux
4 14 (3.66%) Mac OS X
5 10 (2.62%) Unix
6 9 (2.36%) Windows Server
7 7 (1.83%) Apple iOS
Processes & Methodologies
1 341 (89.27%) Agile Software Development
2 222 (58.12%) BDD
3 206 (53.93%) MVC
4 149 (39.01%) Web Application Development
5 135 (35.34%) OO
6 119 (31.15%) Scrum
7 54 (14.14%) Test Automation
8 52 (13.61%) Unit Testing
9 46 (12.04%) Software Engineering
10 42 (10.99%) Continuous Integration
11 41 (10.73%) Dependency Injection
12 38 (9.95%) SDLC
13 29 (7.59%) SDET
14 27 (7.07%) Kanban
14 27 (7.07%) SOA
15 26 (6.81%) API Testing
16 25 (6.54%) Web Development
17 24 (6.28%) Open Source
18 22 (5.76%) ATDD
18 22 (5.76%) Domain-Driven Design
Programming Languages
1 236 (61.78%) C#
2 122 (31.94%) Ruby
3 120 (31.41%) JavaScript
4 104 (27.23%) Java
5 54 (14.14%) SQL
6 16 (4.19%) TypeScript
7 15 (3.93%) PowerShell
7 15 (3.93%) VB.NET
8 13 (3.40%) PHP
9 11 (2.88%) T-SQL
10 10 (2.62%) XAML
11 9 (2.36%) Python
11 9 (2.36%) VB
12 8 (2.09%) VB6
13 7 (1.83%) Go
13 7 (1.83%) Rust
13 7 (1.83%) VBA
14 6 (1.57%) Apple Swift
15 5 (1.31%) C++
15 5 (1.31%) VBScript
Qualifications
1 36 (9.42%) Degree
2 10 (2.62%) Computer Science Degree
3 6 (1.57%) HND
4 2 (0.52%) ISTQB
4 2 (0.52%) ISTQB Foundation Certification
4 2 (0.52%) SC Cleared
4 2 (0.52%) Security Cleared
5 1 (0.26%) Numerate Degree
Quality Assurance & Compliance
1 51 (13.35%) QA
System Software
1 3 (0.79%) VMware Infrastructure
2 1 (0.26%) Active Directory
2 1 (0.26%) Docker
Systems Management
1 11 (2.88%) Ansible
1 11 (2.88%) Opscode Chef
2 7 (1.83%) Puppet
3 4 (1.05%) Capistrano
4 1 (0.26%) Oracle Enterprise Manager
4 1 (0.26%) WMI
Vendors
1 53 (13.87%) Google
2 46 (12.04%) Microsoft
3 31 (8.12%) Apple
3 31 (8.12%) Facebook
3 31 (8.12%) Sony
3 31 (8.12%) Yahoo!
4 12 (3.14%) Xamarin
5 9 (2.36%) Oracle
6 6 (1.57%) Atlassian
6 6 (1.57%) Virgin Media
7 5 (1.31%) Citrix
7 5 (1.31%) Demandware
7 5 (1.31%) Veeam
7 5 (1.31%) VMware
8 2 (0.52%) IBM
9 1 (0.26%) AppDynamics
9 1 (0.26%) ATG
9 1 (0.26%) hybris