Period
to 17 July 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 17 July 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
East of England > Hertfordshire
6 months to
17 Jul 2018
Same period 2017 Same period 2016
Rank 26 24 75
Rank change year-on-year -2 +51 -43
Permanent jobs citing TDD 381 398 176
As % of all permanent IT jobs advertised in Hertfordshire 8.28% 9.15% 3.65%
As % of the Processes & Methodologies category 9.39% 10.17% 4.12%
Number of salaries quoted 353 363 171
Hertfordshire median annual salary £50,000 £47,500 £52,500
Median salary % change year-on-year +5.26% -9.52% +5.00%
10th Percentile £35,000 £32,500 £32,500
90th Percentile £72,500 £72,500 £72,500
East of England median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -5.26%

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 4,058 3,914 4,276
As % of all permanent IT jobs advertised in Hertfordshire 88.14% 89.94% 88.75%
Number of salaries quoted 3,239 3,298 3,458
Hertfordshire median annual salary £50,000 £47,500 £46,500
Median salary % change year-on-year +5.26% +2.15% +3.33%
10th Percentile £27,500 £27,500 £27,000
90th Percentile £72,500 £72,500 £70,250
East of England median annual salary £47,500 £45,000 £45,000
% change year-on-year +5.56% - +2.51%

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 17 July 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 17 July 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 +9 102 £52,500 -19.23% 8
Watford -23 64 £50,000 +11.11% 4
Hemel Hempstead +8 46 £45,000 -14.29% 4
Harpenden - 18 £45,000 -
Hertford +10 15 £70,000 - 1
Letchworth +6 15 £34,000 -9.33%
Stevenage -12 15 £26,000 -46.67% 4
Bishop's Stortford +1 13 £45,000 - 2
Hatfield -14 10 £61,250 -12.50%
Potters Bar - 10 £65,000 -
Welwyn Garden City -35 7 £50,000 -31.03% 3
Rickmansworth -9 4 £55,000 -18.52%
Berkhamsted - 4 £50,000 -
Waltham Cross 0 3 £35,000 -
Hitchin - 2 £38,750 -
TDD
East of England

For the 6 months to 17 July 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.

1 349 (91.60%) Agile Software Development
2 212 (55.64%) C#
3 196 (51.44%) .NET
4 185 (48.56%) BDD
5 159 (41.73%) Scrum
6 152 (39.90%) MVC
7 139 (36.48%) ASP.NET
8 138 (36.22%) Java
9 130 (34.12%) JavaScript
10 113 (29.66%) SQL Server
10 113 (29.66%) ASP.NET MVC
11 109 (28.61%) Continuous Integration
12 108 (28.35%) SQL
13 106 (27.82%) RESTful
14 102 (26.77%) ASP.NET Web API
15 98 (25.72%) Git (software)
16 86 (22.57%) HTML
16 86 (22.57%) Web Application Development
17 79 (20.73%) CSS
18 78 (20.47%) Amazon AWS
19 74 (19.42%) Finance
20 67 (17.59%) SQL Server 2016
21 64 (16.80%) AngularJS
21 64 (16.80%) Spring
22 61 (16.01%) ASP.NET MVC 5
23 60 (15.75%) OO
24 59 (15.49%) Web Services
24 59 (15.49%) XML
25 52 (13.65%) WCF
26 48 (12.60%) Marketing

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 20 (5.25%) Confluence
2 16 (4.20%) Oracle Service Bus
3 15 (3.94%) Oracle SOA Suite
4 14 (3.67%) Tomcat
5 13 (3.41%) SharePoint Server
6 7 (1.84%) WebLogic
7 3 (0.79%) IIS
8 1 (0.26%) Elasticsearch
8 1 (0.26%) JBoss
8 1 (0.26%) WebSphere
Applications
1 10 (2.62%) Chatbot
Cloud Services
1 78 (20.47%) Amazon AWS
2 41 (10.76%) Microsoft Azure
3 18 (4.72%) npm
4 7 (1.84%) SaaS
5 6 (1.57%) AWS CloudTrail
5 6 (1.57%) AWS Lambda
5 6 (1.57%) Runscope
5 6 (1.57%) Serverless
6 5 (1.31%) Amazon EC2
7 2 (0.52%) Google Cloud Platform
8 1 (0.26%) AWS Elastic Beanstalk
8 1 (0.26%) Boomi
8 1 (0.26%) Cloud Computing
Communications & Networking
1 18 (4.72%) HTTP
2 14 (3.67%) SSL
3 11 (2.89%) VPN
4 10 (2.62%) SMS
5 4 (1.05%) 3GPP
5 4 (1.05%) 5G
5 4 (1.05%) LTE
5 4 (1.05%) OFDM
5 4 (1.05%) WCDMA
5 4 (1.05%) WiMAX
5 4 (1.05%) Wireless
6 3 (0.79%) Internet
7 1 (0.26%) Broadband
7 1 (0.26%) Skype
Database & Business Intelligence
1 113 (29.66%) SQL Server
2 67 (17.59%) SQL Server 2016
3 48 (12.60%) NoSQL
4 18 (4.72%) Relational Database
5 14 (3.67%) MongoDB
5 14 (3.67%) Oracle Database
5 14 (3.67%) Oracle Database 12c
6 13 (3.41%) MySQL
7 12 (3.15%) Apache Cassandra
7 12 (3.15%) RDBMS
8 6 (1.57%) Amazon DynamoDB
8 6 (1.57%) Couchbase
8 6 (1.57%) SQL Server 2014
9 5 (1.31%) PostgreSQL
9 5 (1.31%) SQL Server 2012
9 5 (1.31%) SQL Server Reporting Services
10 4 (1.05%) Big Data
11 1 (0.26%) BigQuery
11 1 (0.26%) Redis
11 1 (0.26%) SQL Server Integration Services
Development Applications
1 98 (25.72%) Git (software)
2 43 (11.29%) JIRA
3 21 (5.51%) Visual Studio
3 21 (5.51%) webpack
4 19 (4.99%) gulp
4 19 (4.99%) Jasmine
4 19 (4.99%) Jenkins
4 19 (4.99%) StyleCop
5 18 (4.72%) Karma Test Runner
5 18 (4.72%) Maven
6 17 (4.46%) NUnit
6 17 (4.46%) Selenium
7 15 (3.94%) Cucumber
8 12 (3.15%) TeamCity
8 12 (3.15%) WebDriver
9 6 (1.57%) JMeter
9 6 (1.57%) JUnit
9 6 (1.57%) ReSharper
10 5 (1.31%) LoadRunner
10 5 (1.31%) Robot Framework
General
1 74 (19.42%) Finance
2 48 (12.60%) Marketing
3 32 (8.40%) Advertising
4 25 (6.56%) Retail
5 22 (5.77%) Games
6 16 (4.20%) Back Office
7 11 (2.89%) Legal
8 4 (1.05%) Automotive
9 2 (0.52%) Law
10 1 (0.26%) Telecoms
Job Titles
1 306 (80.31%) Developer
2 138 (36.22%) .NET Developer
3 74 (19.42%) Java Developer
4 61 (16.01%) C# Developer
5 55 (14.44%) Software Developer
6 40 (10.50%) C# .NET Developer
7 32 (8.40%) .NET Software Developer
8 31 (8.14%) Senior Developer
9 28 (7.35%) JavaScript Developer
10 27 (7.09%) Full Stack Developer
11 23 (6.04%) C# Software Developer
12 21 (5.51%) Front End Developer (Client-Side Developer)
13 20 (5.25%) Angular Developer
14 18 (4.72%) HTML CSS Developer
14 18 (4.72%) HTML Developer
14 18 (4.72%) React Developer
14 18 (4.72%) Team Leader
15 15 (3.94%) ASP.NET Developer
15 15 (3.94%) Development Team Leader
15 15 (3.94%) Software Engineer
Libraries, Frameworks & Software Standards
1 196 (51.44%) .NET
2 139 (36.48%) ASP.NET
3 113 (29.66%) ASP.NET MVC
4 106 (27.82%) RESTful
5 102 (26.77%) ASP.NET Web API
6 86 (22.57%) HTML
7 79 (20.73%) CSS
8 64 (16.80%) AngularJS
8 64 (16.80%) Spring
9 61 (16.01%) ASP.NET MVC 5
10 59 (15.49%) Web Services
10 59 (15.49%) XML
11 52 (13.65%) WCF
12 47 (12.34%) .NET Framework
13 44 (11.55%) HTML5
14 39 (10.24%) jQuery
14 39 (10.24%) Node.js
15 38 (9.97%) Entity Framework
16 31 (8.14%) Akka
17 28 (7.35%) J2EE
Miscellaneous
1 40 (10.50%) Computer Science
2 39 (10.24%) User Experience
3 27 (7.09%) Greenfield Project
4 26 (6.82%) Mobile App
5 23 (6.04%) Analytical Skills
6 18 (4.72%) Media Streaming
7 17 (4.46%) Robotics
8 7 (1.84%) Reference Data
8 7 (1.84%) Social Media
9 5 (1.31%) Private Cloud
10 4 (1.05%) Embedded Systems
11 3 (0.79%) BBC
11 3 (0.79%) Self-Motivation
11 3 (0.79%) Social Network
12 2 (0.52%) Algorithms
13 1 (0.26%) Data Structures
13 1 (0.26%) Enterprise Software
13 1 (0.26%) EPoS
13 1 (0.26%) Fintech
13 1 (0.26%) Mainframe
Operating Systems
1 27 (7.09%) Linux
2 24 (6.30%) Unix
3 19 (4.99%) Windows
4 13 (3.41%) Windows Server
5 6 (1.57%) Android
6 3 (0.79%) Apple iOS
6 3 (0.79%) HPUX
6 3 (0.79%) Solaris
Processes & Methodologies
1 349 (91.60%) Agile Software Development
2 185 (48.56%) BDD
3 159 (41.73%) Scrum
4 152 (39.90%) MVC
5 109 (28.61%) Continuous Integration
6 86 (22.57%) Web Application Development
7 60 (15.75%) OO
8 46 (12.07%) Problem-Solving
9 40 (10.50%) Dependency Injection
9 40 (10.50%) E-Commerce
9 40 (10.50%) Test Automation
10 37 (9.71%) Continuous Delivery
10 37 (9.71%) CRM
11 31 (8.14%) Front End Development
11 31 (8.14%) SOLID
12 30 (7.87%) SOA
13 29 (7.61%) Line Management
14 25 (6.56%) SDLC
14 25 (6.56%) Unit Testing
15 23 (6.04%) Validation
Programming Languages
1 212 (55.64%) C#
2 138 (36.22%) Java
3 130 (34.12%) JavaScript
4 108 (28.35%) SQL
5 41 (10.76%) Ruby
6 37 (9.71%) Java 8
6 37 (9.71%) Scala
7 27 (7.09%) ES6
8 23 (6.04%) PL/SQL
9 20 (5.25%) Haskell
9 20 (5.25%) TypeScript
10 13 (3.41%) C++
10 13 (3.41%) PHP
11 12 (3.15%) VB.NET
11 12 (3.15%) VBA
12 11 (2.89%) PowerShell
13 9 (2.36%) T-SQL
14 8 (2.10%) Python
15 5 (1.31%) C
15 5 (1.31%) Shell Script
Qualifications
1 35 (9.19%) Degree
2 25 (6.56%) Computer Science Degree
3 14 (3.67%) Security Cleared
4 12 (3.15%) SC Cleared
5 10 (2.62%) HND
6 4 (1.05%) ISTQB
6 4 (1.05%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 29 (7.61%) QA
2 7 (1.84%) Data Quality
3 1 (0.26%) GCP
System Software
1 30 (7.87%) Docker
Systems Management
1 23 (6.04%) Kubernetes
2 2 (0.52%) Business Desktop Deployment
2 2 (0.52%) MOM
3 1 (0.26%) Grafana
3 1 (0.26%) Icinga
3 1 (0.26%) Kibana
3 1 (0.26%) logstash
3 1 (0.26%) Nagios
3 1 (0.26%) Prometheus
3 1 (0.26%) Puppet
3 1 (0.26%) Terraform
3 1 (0.26%) ZABBIX
Vendors
1 35 (9.19%) Facebook
2 28 (7.35%) Oracle
3 24 (6.30%) Microsoft
4 11 (2.89%) Citrix
5 10 (2.62%) Veeam
5 10 (2.62%) VMware
6 6 (1.57%) AppDynamics
6 6 (1.57%) Splunk
7 5 (1.31%) Google
8 3 (0.79%) Apple
8 3 (0.79%) Atlassian
8 3 (0.79%) IBM
8 3 (0.79%) Sony
8 3 (0.79%) Yahoo!
9 2 (0.52%) Xamarin
10 1 (0.26%) MuleSoft
10 1 (0.26%) New Relic
10 1 (0.26%) PagerDuty
10 1 (0.26%) Talend
10 1 (0.26%) WSO2