Period
to 21 January 2018

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 21 January 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
East of England > Hertfordshire
6 months to
21 Jan 2018
Same period 2017 Same period 2016
Rank 21 32 38
Rank change year-on-year +11 +6 +3
Permanent jobs citing TDD 420 288 301
As % of all permanent IT jobs advertised in Hertfordshire 9.40% 6.55% 5.97%
As % of the Processes & Methodologies category 11.03% 7.41% 6.89%
Number of salaries quoted 390 273 299
Hertfordshire median annual salary £50,000 £45,000 £52,500
Median salary % change year-on-year +11.11% -14.29% +10.53%
10th Percentile £32,500 £31,350 £31,250
90th Percentile £72,500 £72,500 £77,500
East of England median annual salary £48,500 £45,344 £47,500
% change year-on-year +6.96% -4.54% +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 3,809 3,888 4,367
As % of all permanent IT jobs advertised in Hertfordshire 85.27% 88.44% 86.65%
Number of salaries quoted 3,221 3,210 3,560
Hertfordshire median annual salary £50,000 £50,000 £47,500
Median salary % change year-on-year - +5.26% -
10th Percentile £28,250 £27,500 £27,475
90th Percentile £71,250 £72,500 £71,250
East of England median annual salary £48,000 £45,344 £45,000
% change year-on-year +5.86% +0.76% -

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 21 January 2018.

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 21 January 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford +6 77 £45,000 - 2
Hemel Hempstead +31 76 £52,500 +40.00% 12
St Albans -1 66 £65,000 +44.44% 14
Letchworth -3 25 £34,000 - 3
Waltham Cross 0 22 £35,000 -50.00% 1
Hertford - 22 £70,000 - 3
Stevenage +6 20 £45,000 -7.69% 1
Harpenden +19 16 £45,000 -25.00% 1
Bishop's Stortford - 15 £45,000 - 2
Hatfield +9 14 £60,000 +11.63% 1
Rickmansworth -14 9 £55,000 -10.20% 2
Hitchin - 7 £35,000 -
Welwyn Garden City -12 6 £60,000 -15.79% 2
Potters Bar - 6 £68,750 -
Hoddesdon - 5 £30,000 -
Broxbourne +1 4 £45,000 -5.26%
Borehamwood -9 2 - -
TDD
East of England

For the 6 months to 21 January 2018, 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.

1 383 (91.19%) Agile Software Development
2 230 (54.76%) C#
3 224 (53.33%) BDD
4 218 (51.90%) .NET
5 201 (47.86%) MVC
6 181 (43.10%) ASP.NET
7 174 (41.43%) SQL Server
8 150 (35.71%) RESTful
9 149 (35.48%) ASP.NET MVC
10 148 (35.24%) ASP.NET Web API
11 147 (35.00%) Web Application Development
12 139 (33.10%) Scrum
13 138 (32.86%) Java
13 138 (32.86%) Git (software)
14 136 (32.38%) Node.js
15 132 (31.43%) ASP.NET MVC 5
16 131 (31.19%) JavaScript
17 128 (30.48%) WCF
18 116 (27.62%) Ruby
19 114 (27.14%) OO
19 114 (27.14%) AngularJS
20 112 (26.67%) NoSQL
21 110 (26.19%) SQL Server 2016
22 78 (18.57%) HTML
23 74 (17.62%) CSS
24 70 (16.67%) SQL
25 65 (15.48%) Amazon AWS
26 64 (15.24%) Finance
27 58 (13.81%) Web Services
28 55 (13.10%) Test Automation

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 (6.67%) Confluence
2 21 (5.00%) Tomcat
3 9 (2.14%) JBoss
3 9 (2.14%) WebLogic
4 7 (1.67%) WebSphere
5 5 (1.19%) Elasticsearch
6 4 (0.95%) CMS
7 3 (0.71%) SharePoint Server
7 3 (0.71%) Umbraco
8 2 (0.48%) IIS
8 2 (0.48%) Oracle SOA Suite
9 1 (0.24%) Oracle Service Bus
9 1 (0.24%) SharePoint
9 1 (0.24%) WebLogic Portal
Applications
1 1 (0.24%) Photoshop
Business Applications
1 1 (0.24%) WebTrends
Cloud Services
1 65 (15.48%) Amazon AWS
2 21 (5.00%) AWS Lambda
2 21 (5.00%) Serverless
3 16 (3.81%) Microsoft Azure
3 16 (3.81%) npm
4 15 (3.57%) SaaS
5 13 (3.10%) Google Play
6 11 (2.62%) AWS Elastic Beanstalk
7 4 (0.95%) GitHub
8 2 (0.48%) Amazon ElastiCache
8 2 (0.48%) Amazon S3
8 2 (0.48%) Amazon SQS
8 2 (0.48%) AWS CloudFormation
8 2 (0.48%) CloudFront
8 2 (0.48%) Heroku
8 2 (0.48%) Route 53
9 1 (0.24%) Amazon EC2
9 1 (0.24%) Cloud Computing
Communications & Networking
1 17 (4.05%) HTTP
2 16 (3.81%) VPN
3 10 (2.38%) Internet
4 5 (1.19%) Broadband
4 5 (1.19%) Hyperconnected
4 5 (1.19%) Skype
5 1 (0.24%) SSL
Database & Business Intelligence
1 174 (41.43%) SQL Server
2 112 (26.67%) NoSQL
3 110 (26.19%) SQL Server 2016
4 22 (5.24%) SQL Server 2014
5 13 (3.10%) Amazon DynamoDB
5 13 (3.10%) Relational Database
6 10 (2.38%) Apache Cassandra
6 10 (2.38%) MongoDB
7 8 (1.90%) SQL Server 2012
8 7 (1.67%) SQL Server Reporting Services
9 6 (1.43%) PostgreSQL
9 6 (1.43%) Redis
10 4 (0.95%) SQL Server Integration Services
11 2 (0.48%) Amazon RDS
11 2 (0.48%) Big Data
11 2 (0.48%) Oracle Database
11 2 (0.48%) RDBMS
12 1 (0.24%) Crystal Reports
12 1 (0.24%) DB2
12 1 (0.24%) Oracle Database 12c
Development Applications
1 138 (32.86%) Git (software)
2 47 (11.19%) JIRA
3 32 (7.62%) Selenium
4 29 (6.90%) Jenkins
5 23 (5.48%) Jasmine
6 21 (5.00%) WebDriver
7 19 (4.52%) Cucumber
8 18 (4.29%) webpack
9 16 (3.81%) gulp
9 16 (3.81%) JUnit
9 16 (3.81%) Karma Test Runner
9 16 (3.81%) Maven
10 13 (3.10%) NUnit
10 13 (3.10%) Visual Studio
11 10 (2.38%) Moq
11 10 (2.38%) MSTest
11 10 (2.38%) Rhino Mocks
11 10 (2.38%) Team Foundation Server
11 10 (2.38%) TeamCity
12 8 (1.90%) Zephyr
General
1 64 (15.24%) Finance
2 26 (6.19%) Games
3 18 (4.29%) Marketing
4 16 (3.81%) Automotive
5 14 (3.33%) Retail
6 10 (2.38%) Publishing
7 7 (1.67%) Banking
7 7 (1.67%) Legal
8 5 (1.19%) Telecoms
9 4 (0.95%) Electronics
10 1 (0.24%) Advertising
Job Titles
1 322 (76.67%) Developer
2 172 (40.95%) .NET Developer
3 62 (14.76%) Java Developer
4 47 (11.19%) Senior Developer
5 42 (10.00%) .NET Software Developer
6 28 (6.67%) C# Developer
7 25 (5.95%) JavaScript Developer
8 22 (5.24%) Social Media Developer
9 21 (5.00%) Development Team Leader
9 21 (5.00%) Team Leader
10 18 (4.29%) Systems Developer
11 16 (3.81%) Software Developer
11 16 (3.81%) Software Engineer
12 15 (3.57%) Java Team Leader
13 14 (3.33%) Angular Developer
13 14 (3.33%) Java Engineer
13 14 (3.33%) Senior Java Developer
14 13 (3.10%) Digital Developer
14 13 (3.10%) Front End Developer (Client-Side Developer)
14 13 (3.10%) Java Development Team Leader
Libraries, Frameworks & Software Standards
1 218 (51.90%) .NET
2 181 (43.10%) ASP.NET
3 150 (35.71%) RESTful
4 149 (35.48%) ASP.NET MVC
5 148 (35.24%) ASP.NET Web API
6 136 (32.38%) Node.js
7 132 (31.43%) ASP.NET MVC 5
8 128 (30.48%) WCF
9 114 (27.14%) AngularJS
10 78 (18.57%) HTML
11 74 (17.62%) CSS
12 58 (13.81%) Web Services
13 48 (11.43%) .NET Framework
14 42 (10.00%) Entity Framework
15 40 (9.52%) React
16 39 (9.29%) XML
17 37 (8.81%) jQuery
18 36 (8.57%) REST
19 35 (8.33%) HTML5
20 31 (7.38%) KnockoutJS
Miscellaneous
1 41 (9.76%) Mobile App
2 28 (6.67%) User Experience
3 26 (6.19%) Greenfield Project
4 22 (5.24%) BBC
4 22 (5.24%) Social Media
4 22 (5.24%) Social Network
5 17 (4.05%) Computer Science
6 16 (3.81%) Media Streaming
7 13 (3.10%) iPhone
8 11 (2.62%) Algorithms
8 11 (2.62%) Analytical Skills
9 9 (2.14%) Tandem
10 5 (1.19%) Online Games
10 5 (1.19%) RIA
10 5 (1.19%) Robotics
11 3 (0.71%) Enterprise Software
11 3 (0.71%) Fintech
12 2 (0.48%) Data Structures
12 2 (0.48%) Reference Data
Operating Systems
1 37 (8.81%) Windows
2 31 (7.38%) Linux
3 25 (5.95%) Unix
4 22 (5.24%) Windows Server
5 14 (3.33%) Android
6 12 (2.86%) Apple iOS
7 1 (0.24%) HPUX
7 1 (0.24%) Mac OS X
7 1 (0.24%) Solaris
Processes & Methodologies
1 383 (91.19%) Agile Software Development
2 224 (53.33%) BDD
3 201 (47.86%) MVC
4 147 (35.00%) Web Application Development
5 139 (33.10%) Scrum
6 114 (27.14%) OO
7 55 (13.10%) Test Automation
8 51 (12.14%) Software Engineering
9 45 (10.71%) Continuous Integration
10 39 (9.29%) Unit Testing
11 35 (8.33%) Dependency Injection
12 34 (8.10%) Business Intelligence
13 33 (7.86%) Kanban
14 31 (7.38%) CRM
14 31 (7.38%) Mentoring
14 31 (7.38%) SDLC
15 29 (6.90%) Open Source
16 26 (6.19%) SOA
17 23 (5.48%) SOLID
18 21 (5.00%) Customer Requirements
Programming Languages
1 230 (54.76%) C#
2 138 (32.86%) Java
3 131 (31.19%) JavaScript
4 116 (27.62%) Ruby
5 70 (16.67%) SQL
6 24 (5.71%) VB.NET
7 23 (5.48%) TypeScript
8 20 (4.76%) ES6
8 20 (4.76%) PHP
9 18 (4.29%) VBA
10 17 (4.05%) Python
11 14 (3.33%) T-SQL
12 12 (2.86%) C++
12 12 (2.86%) PowerShell
13 11 (2.62%) Apple Swift
14 10 (2.38%) Scala
15 9 (2.14%) Groovy
16 6 (1.43%) PL/SQL
16 6 (1.43%) VB
16 6 (1.43%) VB6
Qualifications
1 29 (6.90%) Degree
2 14 (3.33%) Computer Science Degree
3 10 (2.38%) SC Cleared
3 10 (2.38%) Security Cleared
4 8 (1.90%) ISTQB
4 8 (1.90%) ISTQB Foundation Certification
5 1 (0.24%) HND
5 1 (0.24%) Numerate Degree
Quality Assurance & Compliance
1 46 (10.95%) QA
2 2 (0.48%) Data Quality
System Software
1 3 (0.71%) VMware Infrastructure
2 2 (0.48%) Docker
3 1 (0.24%) Active Directory
Systems Management
1 6 (1.43%) Ansible
2 2 (0.48%) Business Desktop Deployment
2 2 (0.48%) MOM
2 2 (0.48%) Opscode Chef
2 2 (0.48%) Puppet
3 1 (0.24%) Kubernetes
3 1 (0.24%) Oracle Enterprise Manager
3 1 (0.24%) WMI
Vendors
1 40 (9.52%) Google
1 40 (9.52%) Microsoft
2 23 (5.48%) Facebook
3 22 (5.24%) Apple
3 22 (5.24%) Sony
3 22 (5.24%) Yahoo!
4 16 (3.81%) Citrix
4 16 (3.81%) Oracle
5 14 (3.33%) Veeam
5 14 (3.33%) VMware
6 4 (0.95%) IBM
6 4 (0.95%) Xamarin
7 1 (0.24%) AppDynamics
7 1 (0.24%) Demandware
7 1 (0.24%) New Relic