Period
to 22 April 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 22 April 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
East of England > Hertfordshire
6 months to
22 Apr 2018
Same period 2017 Same period 2016
Rank 22 28 57
Rank change year-on-year +6 +29 -24
Permanent jobs citing TDD 480 379 206
As % of all permanent IT jobs advertised in Hertfordshire 9.71% 8.58% 4.12%
As % of the Processes & Methodologies category 11.11% 9.51% 4.66%
Number of salaries quoted 445 357 198
Hertfordshire median annual salary £50,000 £45,000 £55,000
Median salary % change year-on-year +11.11% -18.18% +10.00%
10th Percentile £32,000 £32,500 £32,500
90th Percentile £72,500 £72,500 £75,000
East of England median annual salary £50,000 £45,000 £45,000
% change year-on-year +11.11% - -

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 4,319 3,987 4,422
As % of all permanent IT jobs advertised in Hertfordshire 87.39% 90.26% 88.42%
Number of salaries quoted 3,550 3,339 3,597
Hertfordshire median annual salary £52,500 £47,500 £47,500
Median salary % change year-on-year +10.53% - +3.26%
10th Percentile £27,500 £26,250 £27,000
90th Percentile £72,500 £72,000 £71,250
East of England median annual salary £50,000 £45,000 £45,000
% change year-on-year +11.11% - +2.27%

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 22 April 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 22 April 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
St Albans +5 90 £51,250 -6.82% 5
Hemel Hempstead +10 79 £42,000 +12.00% 7
Watford -11 75 £47,500 +5.56% 3
Harpenden +28 28 £45,000 -25.00%
Letchworth +1 26 £34,000 -15.00% 1
Hertford +18 23 £70,000 - 2
Stevenage +6 22 £40,000 -23.81% 3
Bishop's Stortford +5 16 £45,000 +12.50% 1
Potters Bar - 13 £65,000 -
Hatfield -12 12 £60,000 - 1
Welwyn Garden City -30 11 - - 2
Rickmansworth -16 10 £55,000 -18.52% 2
Waltham Cross +2 9 £35,000 -50.00%
Hitchin - 7 £35,000 - 1
Berkhamsted - 4 £50,000 -
Hoddesdon +6 2 £30,000 -
Borehamwood - 2 - -
TDD
East of England

For the 6 months to 22 April 2018, IT jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the Hertfordshire region with a requirement for TDD.

1 442 (92.08%) Agile Software Development
2 249 (51.88%) C#
3 235 (48.96%) BDD
4 233 (48.54%) .NET
5 201 (41.88%) MVC
6 200 (41.67%) Scrum
7 185 (38.54%) ASP.NET
8 175 (36.46%) Java
9 160 (33.33%) JavaScript
10 157 (32.71%) SQL Server
11 152 (31.67%) RESTful
12 145 (30.21%) ASP.NET MVC
12 145 (30.21%) ASP.NET Web API
13 142 (29.58%) Git (software)
14 124 (25.83%) Web Application Development
15 122 (25.42%) AngularJS
16 109 (22.71%) SQL
17 105 (21.88%) SQL Server 2016
18 102 (21.25%) ASP.NET MVC 5
18 102 (21.25%) Finance
19 101 (21.04%) HTML
20 99 (20.63%) Continuous Integration
21 95 (19.79%) Amazon AWS
21 95 (19.79%) NoSQL
22 93 (19.38%) Node.js
23 90 (18.75%) Ruby
23 90 (18.75%) CSS
24 88 (18.33%) WCF
25 83 (17.29%) OO
26 72 (15.00%) JIRA

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 40 (8.33%) Confluence
2 24 (5.00%) Tomcat
3 12 (2.50%) Oracle Service Bus
3 12 (2.50%) SharePoint Server
4 11 (2.29%) Oracle SOA Suite
4 11 (2.29%) WebLogic
5 7 (1.46%) JBoss
6 5 (1.04%) WebSphere
7 3 (0.63%) IIS
8 2 (0.42%) Elasticsearch
9 1 (0.21%) SharePoint
Applications
1 8 (1.67%) Chatbot
2 1 (0.21%) Photoshop
Business Applications
1 1 (0.21%) WebTrends
Cloud Services
1 95 (19.79%) Amazon AWS
2 32 (6.67%) Microsoft Azure
3 28 (5.83%) npm
4 19 (3.96%) AWS Lambda
4 19 (3.96%) Serverless
5 16 (3.33%) SaaS
6 8 (1.67%) AWS Elastic Beanstalk
7 6 (1.25%) AWS CloudTrail
7 6 (1.25%) Runscope
8 4 (0.83%) GitHub
9 2 (0.42%) Amazon EC2
9 2 (0.42%) Amazon ElastiCache
9 2 (0.42%) Amazon S3
9 2 (0.42%) Amazon SQS
9 2 (0.42%) AWS CloudFormation
9 2 (0.42%) CloudFront
9 2 (0.42%) Heroku
9 2 (0.42%) Route 53
10 1 (0.21%) Boomi
10 1 (0.21%) Google Cloud Platform
Communications & Networking
1 28 (5.83%) HTTP
2 24 (5.00%) VPN
3 11 (2.29%) SSL
4 8 (1.67%) SMS
5 6 (1.25%) Broadband
6 4 (0.83%) 3GPP
6 4 (0.83%) 5G
6 4 (0.83%) Internet
6 4 (0.83%) LTE
6 4 (0.83%) OFDM
6 4 (0.83%) Skype
6 4 (0.83%) WCDMA
6 4 (0.83%) WiMAX
6 4 (0.83%) Wireless
7 2 (0.42%) Hyperconnected
Database & Business Intelligence
1 157 (32.71%) SQL Server
2 105 (21.88%) SQL Server 2016
3 95 (19.79%) NoSQL
4 17 (3.54%) Relational Database
5 16 (3.33%) Apache Cassandra
5 16 (3.33%) MongoDB
6 12 (2.50%) Amazon DynamoDB
7 11 (2.29%) Oracle Database
7 11 (2.29%) Oracle Database 12c
7 11 (2.29%) SQL Server 2014
8 10 (2.08%) MySQL
8 10 (2.08%) SQL Server 2012
9 8 (1.67%) RDBMS
10 7 (1.46%) PostgreSQL
11 6 (1.25%) Couchbase
11 6 (1.25%) SQL Server Reporting Services
12 3 (0.63%) Redis
12 3 (0.63%) SQL Server Integration Services
13 2 (0.42%) Amazon RDS
13 2 (0.42%) Big Data
Development Applications
1 142 (29.58%) Git (software)
2 72 (15.00%) JIRA
3 34 (7.08%) Jasmine
4 31 (6.46%) webpack
5 29 (6.04%) gulp
5 29 (6.04%) Selenium
6 28 (5.83%) Jenkins
6 28 (5.83%) Karma Test Runner
7 25 (5.21%) Maven
8 21 (4.38%) WebDriver
9 19 (3.96%) Cucumber
10 15 (3.13%) JUnit
11 14 (2.92%) TeamCity
12 13 (2.71%) NUnit
12 13 (2.71%) Visual Studio
13 11 (2.29%) Moq
14 10 (2.08%) Zephyr
15 9 (1.88%) ReSharper
15 9 (1.88%) Team Foundation Server
16 8 (1.67%) Rhino Mocks
General
1 102 (21.25%) Finance
2 48 (10.00%) Marketing
3 23 (4.79%) Retail
4 20 (4.17%) Advertising
5 18 (3.75%) Games
6 17 (3.54%) Automotive
7 14 (2.92%) Legal
8 6 (1.25%) Publishing
8 6 (1.25%) Telecoms
9 5 (1.04%) Back Office
9 5 (1.04%) Banking
10 1 (0.21%) Law
Job Titles
1 363 (75.63%) Developer
2 161 (33.54%) .NET Developer
3 84 (17.50%) Java Developer
4 47 (9.79%) C# Developer
5 42 (8.75%) Software Developer
6 40 (8.33%) JavaScript Developer
7 39 (8.13%) Senior Developer
8 37 (7.71%) .NET Software Developer
9 26 (5.42%) Angular Developer
10 25 (5.21%) Team Leader
11 24 (5.00%) Development Team Leader
11 24 (5.00%) Front End Developer (Client-Side Developer)
11 24 (5.00%) Full Stack Developer
12 23 (4.79%) Systems Developer
13 22 (4.58%) C# .NET Developer
13 22 (4.58%) React Developer
14 21 (4.38%) HTML CSS Developer
14 21 (4.38%) HTML Developer
15 19 (3.96%) Scrum Master
15 19 (3.96%) Software Engineer
Libraries, Frameworks & Software Standards
1 233 (48.54%) .NET
2 185 (38.54%) ASP.NET
3 152 (31.67%) RESTful
4 145 (30.21%) ASP.NET MVC
4 145 (30.21%) ASP.NET Web API
5 122 (25.42%) AngularJS
6 102 (21.25%) ASP.NET MVC 5
7 101 (21.04%) HTML
8 93 (19.38%) Node.js
9 90 (18.75%) CSS
10 88 (18.33%) WCF
11 64 (13.33%) Web Services
12 60 (12.50%) XML
13 55 (11.46%) .NET Framework
14 52 (10.83%) HTML5
14 52 (10.83%) Spring
15 46 (9.58%) Entity Framework
15 46 (9.58%) jQuery
16 45 (9.38%) React
17 31 (6.46%) Sass
Miscellaneous
1 39 (8.13%) Mobile App
2 38 (7.92%) User Experience
3 29 (6.04%) Greenfield Project
4 28 (5.83%) Media Streaming
5 27 (5.63%) Computer Science
6 19 (3.96%) Analytical Skills
7 13 (2.71%) Robotics
8 11 (2.29%) Algorithms
9 10 (2.08%) Social Media
10 9 (1.88%) Social Network
11 6 (1.25%) BBC
12 5 (1.04%) Self-Motivation
12 5 (1.04%) Tandem
13 4 (0.83%) Embedded Systems
13 4 (0.83%) Enterprise Software
13 4 (0.83%) Online Games
13 4 (0.83%) Private Cloud
14 3 (0.63%) Reference Data
15 1 (0.21%) EPoS
15 1 (0.21%) Mainframe
Operating Systems
1 41 (8.54%) Linux
2 38 (7.92%) Unix
2 38 (7.92%) Windows
3 27 (5.63%) Windows Server
4 12 (2.50%) Apple iOS
5 3 (0.63%) HPUX
5 3 (0.63%) Solaris
6 2 (0.42%) Android
Processes & Methodologies
1 442 (92.08%) Agile Software Development
2 235 (48.96%) BDD
3 201 (41.88%) MVC
4 200 (41.67%) Scrum
5 124 (25.83%) Web Application Development
6 99 (20.63%) Continuous Integration
7 83 (17.29%) OO
8 60 (12.50%) Test Automation
9 50 (10.42%) CRM
10 49 (10.21%) Business Intelligence
11 43 (8.96%) Dependency Injection
11 43 (8.96%) Kanban
12 41 (8.54%) Mentoring
12 41 (8.54%) Software Engineering
13 40 (8.33%) Problem-Solving
14 39 (8.13%) E-Commerce
15 37 (7.71%) SOLID
16 36 (7.50%) Continuous Delivery
16 36 (7.50%) Front End Development
16 36 (7.50%) Unit Testing
Programming Languages
1 249 (51.88%) C#
2 175 (36.46%) Java
3 160 (33.33%) JavaScript
4 109 (22.71%) SQL
5 90 (18.75%) Ruby
6 31 (6.46%) ES6
7 30 (6.25%) Java 8
8 29 (6.04%) TypeScript
9 27 (5.63%) Scala
9 27 (5.63%) VB.NET
10 26 (5.42%) PHP
11 25 (5.21%) VBA
12 17 (3.54%) PL/SQL
13 14 (2.92%) C++
14 13 (2.71%) Python
14 13 (2.71%) T-SQL
15 10 (2.08%) Apple Swift
15 10 (2.08%) PowerShell
16 9 (1.88%) Groovy
17 8 (1.67%) Haskell
Qualifications
1 33 (6.88%) Degree
2 21 (4.38%) Computer Science Degree
3 15 (3.13%) Security Cleared
4 13 (2.71%) SC Cleared
5 10 (2.08%) ISTQB
5 10 (2.08%) ISTQB Foundation Certification
6 8 (1.67%) HND
7 1 (0.21%) Numerate Degree
Quality Assurance & Compliance
1 47 (9.79%) QA
2 3 (0.63%) Data Quality
3 1 (0.21%) GCP
System Software
1 18 (3.75%) Docker
Systems Management
1 10 (2.08%) Kubernetes
2 9 (1.88%) Single Sign-On
3 4 (0.83%) Ansible
4 3 (0.63%) Business Desktop Deployment
4 3 (0.63%) MOM
5 1 (0.21%) Puppet
5 1 (0.21%) Terraform
Vendors
1 34 (7.08%) Microsoft
2 27 (5.63%) Oracle
3 26 (5.42%) Facebook
4 24 (5.00%) Citrix
5 21 (4.38%) Veeam
5 21 (4.38%) VMware
6 11 (2.29%) Google
7 6 (1.25%) AppDynamics
7 6 (1.25%) Apple
7 6 (1.25%) Sony
7 6 (1.25%) Splunk
7 6 (1.25%) Yahoo!
8 4 (0.83%) IBM
9 3 (0.63%) Atlassian
10 2 (0.42%) New Relic
10 2 (0.42%) Xamarin
11 1 (0.21%) Dell
11 1 (0.21%) MuleSoft
11 1 (0.21%) Talend
11 1 (0.21%) WSO2