Period
to 9 December 2018

The following table provides summary statistics for permanent job vacancies advertised in Watford 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 9 December 2018 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Hertfordshire > Watford
6 months to
9 Dec 2018
Same period 2017 Same period 2016
Rank 25 20 36
Rank change year-on-year -5 +16 +50
Permanent jobs citing TDD 94 98 57
As % of all permanent IT jobs advertised in Watford 9.80% 10.50% 5.62%
As % of the Processes & Methodologies category 10.90% 11.78% 6.09%
Number of salaries quoted 91 88 48
Watford median annual salary £55,000 £45,000 £50,000
Median salary % change year-on-year +22.22% -10.00% +11.11%
10th Percentile £35,750 £33,750 £35,000
90th Percentile £70,000 £62,500 £72,500
Hertfordshire median annual salary £52,500 £47,500 £47,500
% change year-on-year +10.53% - -5.00%

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 Watford with a requirement for process or methodology skills.

All Process and Methodology Skills
Watford
Permanent vacancies with a requirement for process or methodology skills 862 832 936
As % of all permanent IT jobs advertised in Watford 89.89% 89.17% 92.31%
Number of salaries quoted 699 690 797
Watford median annual salary £50,000 £50,000 £52,500
Median salary % change year-on-year - -4.76% +10.53%
10th Percentile £27,500 £29,500 £28,000
90th Percentile £80,000 £67,500 £75,000
Hertfordshire median annual salary £50,000 £47,500 £50,000
% change year-on-year +5.26% -5.00% +8.70%

TDD
Job Vacancy Trend in Watford

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

Job vacancy trend for TDD in Watford

TDD
Salary Trend in Watford

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD in Watford.

Salary trend for TDD in Watford

TDD
Salary Histogram in Watford

The salary distribution of IT jobs citing TDD in Watford over the 6 months to 9 December 2018.

Salary histogram for TDD in Watford

For the 6 months to 9 December 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 Watford region with a requirement for TDD.

1 74 (78.72%) Agile Software Development
2 66 (70.21%) SQL
3 57 (60.64%) BDD
4 48 (51.06%) C#
5 45 (47.87%) Test Automation
6 43 (45.74%) SQL Server
7 41 (43.62%) XML
8 40 (42.55%) JavaScript
9 36 (38.30%) Problem-Solving
10 35 (37.23%) Analytical Skills
10 35 (37.23%) PL/SQL
10 35 (37.23%) Oracle
11 34 (36.17%) Scaled Agile Framework
12 33 (35.11%) Migration
12 33 (35.11%) Data Migration
13 30 (31.91%) MVC
14 29 (30.85%) SC Cleared
14 29 (30.85%) Security Cleared
15 27 (28.72%) Reference Data
15 27 (28.72%) Data Mapping
15 27 (28.72%) Data Quality
16 26 (27.66%) Java
16 26 (27.66%) ETL
17 25 (26.60%) CSS
17 25 (26.60%) Scrum
18 24 (25.53%) RESTful
18 24 (25.53%) JIRA
19 21 (22.34%) SQL Server Reporting Services
19 21 (22.34%) PostgreSQL
19 21 (22.34%) T-SQL

TDD
Co-occurring IT Skills in Watford 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 12 (12.77%) Tomcat
2 8 (8.51%) Oracle Service Bus
2 8 (8.51%) Oracle SOA Suite
2 8 (8.51%) SharePoint Server
3 6 (6.38%) JBoss
3 6 (6.38%) WebLogic
3 6 (6.38%) WebSphere
4 1 (1.06%) Confluence
Communications & Networking
1 8 (8.51%) SSL
Database & Business Intelligence
1 43 (45.74%) SQL Server
2 21 (22.34%) PostgreSQL
2 21 (22.34%) SQL Server Reporting Services
3 17 (18.09%) SQL Server 2016
4 15 (15.96%) SQL Server Integration Services
5 12 (12.77%) RDBMS
5 12 (12.77%) Relational Database
6 8 (8.51%) Oracle Database
6 8 (8.51%) Oracle Database 12c
7 6 (6.38%) SQL Server 2012
7 6 (6.38%) SQL Server 2014
8 2 (2.13%) NoSQL
Development Applications
1 24 (25.53%) JIRA
2 15 (15.96%) Subversion
3 13 (13.83%) Git (software)
4 8 (8.51%) Maven
5 6 (6.38%) Zephyr
6 4 (4.26%) Cucumber
6 4 (4.26%) PostCSS
6 4 (4.26%) webpack
7 3 (3.19%) Selenium
8 2 (2.13%) JBehave
8 2 (2.13%) Jenkins
8 2 (2.13%) Team Foundation Server
9 1 (1.06%) Gradle
9 1 (1.06%) Robot Framework
9 1 (1.06%) WebDriver
General
1 20 (21.28%) Finance
2 16 (17.02%) Retail
3 2 (2.13%) Games
4 1 (1.06%) Automotive
Job Titles
1 70 (74.47%) Developer
2 27 (28.72%) Data Migration Developer
3 21 (22.34%) ETL Developer
3 21 (22.34%) Oracle Developer
3 21 (22.34%) Oracle ETL Developer
3 21 (22.34%) PostgreSQL Developer
3 21 (22.34%) SQL Developer
3 21 (22.34%) SQL Server Developer
4 20 (21.28%) C# Developer
5 15 (15.96%) .NET Developer
6 14 (14.89%) C# .NET Developer
7 13 (13.83%) Angular Developer
7 13 (13.83%) Full Stack Developer
8 12 (12.77%) Analyst
9 10 (10.64%) Senior Developer
10 9 (9.57%) Software Developer
11 8 (8.51%) Java Developer
11 8 (8.51%) Tester
12 7 (7.45%) QA Tester
12 7 (7.45%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 41 (43.62%) XML
2 25 (26.60%) CSS
3 24 (25.53%) RESTful
4 21 (22.34%) .NET
4 21 (22.34%) ASP.NET
5 16 (17.02%) Spring
6 15 (15.96%) JSON
7 14 (14.89%) AngularJS
7 14 (14.89%) HTML
7 14 (14.89%) J2EE
8 13 (13.83%) .NET Core
8 13 (13.83%) Angular 2
9 12 (12.77%) Java EE
10 10 (10.64%) HTML5
10 10 (10.64%) Sass
11 8 (8.51%) ASP.NET MVC
11 8 (8.51%) JSP
11 8 (8.51%) SOAP
11 8 (8.51%) Spring MVC
11 8 (8.51%) XSD
Miscellaneous
1 35 (37.23%) Analytical Skills
2 27 (28.72%) Reference Data
3 18 (19.15%) Greenfield Project
4 11 (11.70%) User Experience
5 9 (9.57%) Fintech
Operating Systems
1 10 (10.64%) Windows
2 9 (9.57%) Unix
3 7 (7.45%) Linux
4 6 (6.38%) Windows Server
5 1 (1.06%) Android
Processes & Methodologies
1 74 (78.72%) Agile Software Development
2 57 (60.64%) BDD
3 45 (47.87%) Test Automation
4 36 (38.30%) Problem-Solving
5 34 (36.17%) Scaled Agile Framework
6 33 (35.11%) Data Migration
6 33 (35.11%) Migration
7 30 (31.91%) MVC
8 27 (28.72%) Data Mapping
9 26 (27.66%) ETL
10 25 (26.60%) Scrum
11 18 (19.15%) Software Engineering
12 16 (17.02%) OO
13 14 (14.89%) Continuous Integration
13 14 (14.89%) Microservices
13 14 (14.89%) Web Application Development
14 13 (13.83%) Digital Transformation Programme
15 12 (12.77%) Data Modelling
15 12 (12.77%) User Stories
16 11 (11.70%) Test Scripting
Programming Languages
1 66 (70.21%) SQL
2 48 (51.06%) C#
3 40 (42.55%) JavaScript
4 35 (37.23%) PL/SQL
5 26 (27.66%) Java
6 21 (22.34%) T-SQL
7 10 (10.64%) ES6
8 6 (6.38%) ANSI SQL
8 6 (6.38%) Shell Script
9 3 (3.19%) Java 8
10 2 (2.13%) Ruby
11 1 (1.06%) Kotlin
Qualifications
1 29 (30.85%) SC Cleared
1 29 (30.85%) Security Cleared
2 6 (6.38%) ISTQB
2 6 (6.38%) ISTQB Foundation Certification
3 2 (2.13%) Degree
Quality Assurance & Compliance
1 27 (28.72%) Data Quality
2 15 (15.96%) QA
Systems Management
1 1 (1.06%) Ansible
Vendors
1 35 (37.23%) Oracle
2 16 (17.02%) Microsoft
3 15 (15.96%) Talend
4 6 (6.38%) Sybase
5 2 (2.13%) Xamarin
6 1 (1.06%) Atlassian
6 1 (1.06%) IBM