Period
to 21 January 2019

The following table provides summary statistics for permanent job vacancies advertised in Liverpool 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 2019 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Merseyside > Liverpool
6 months to
21 Jan 2019
Same period 2018 Same period 2017
Rank 26 32 38
Rank change year-on-year +6 +6 -9
Permanent jobs citing TDD 36 37 55
As % of all permanent IT jobs advertised in Liverpool 6.50% 5.30% 5.52%
As % of the Processes & Methodologies category 7.20% 5.70% 6.11%
Number of salaries quoted 34 34 44
Liverpool median annual salary £37,500 £50,000 £40,000
Median salary % change year-on-year -25.00% +25.00% -
10th Percentile £32,500 £32,500 £35,000
90th Percentile £55,000 £52,500 £55,750
Merseyside median annual salary £40,000 £50,000 £40,000
% change year-on-year -20.00% +25.00% -

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 Liverpool with a requirement for process or methodology skills.

All Process and Methodology Skills
Liverpool
Permanent vacancies with a requirement for process or methodology skills 500 649 900
As % of all permanent IT jobs advertised in Liverpool 90.25% 92.98% 90.36%
Number of salaries quoted 372 508 590
Liverpool median annual salary £42,500 £40,000 £40,000
Median salary % change year-on-year +6.25% - -
10th Percentile £27,500 £26,250 £26,250
90th Percentile £60,000 £63,750 £57,500
Merseyside median annual salary £40,000 £40,000 £40,000

TDD
Job Vacancy Trend in Liverpool

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

Job vacancy trend for TDD in Liverpool

TDD
Salary Trend in Liverpool

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

Salary trend for TDD in Liverpool

TDD
Salary Histogram in Liverpool

The salary distribution of IT jobs citing TDD in Liverpool over the 6 months to 21 January 2019.

Salary histogram for TDD in Liverpool

For the 6 months to 21 January 2019, 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 Liverpool region with a requirement for TDD.

1 33 (91.67%) Agile Software Development
2 23 (63.89%) .NET
3 22 (61.11%) BDD
4 20 (55.56%) C#
4 20 (55.56%) SQL Server
5 19 (52.78%) SQL
5 19 (52.78%) RESTful
6 18 (50.00%) Microsoft
7 17 (47.22%) SOAP
7 17 (47.22%) Web Services
7 17 (47.22%) T-SQL
7 17 (47.22%) Windows
7 17 (47.22%) WCF
8 16 (44.44%) .NET Framework
8 16 (44.44%) Visual Studio
9 15 (41.67%) Team Foundation Server
9 15 (41.67%) Acceptance Criteria
10 14 (38.89%) PMI
10 14 (38.89%) PMI Certification
11 11 (30.56%) Continuous Integration
12 9 (25.00%) Unit Testing
13 8 (22.22%) JavaScript
14 7 (19.44%) React
15 6 (16.67%) Microservices
15 6 (16.67%) Pair Programming
15 6 (16.67%) Spring
15 6 (16.67%) Scrum
16 5 (13.89%) MVC
16 5 (13.89%) Degree
16 5 (13.89%) Software Engineering

TDD
Co-occurring IT Skills in Liverpool 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 2 (5.56%) Elasticsearch
Applications
1 1 (2.78%) Chatbot
Cloud Services
1 3 (8.33%) Amazon AWS
2 2 (5.56%) AWS Lambda
2 2 (5.56%) Microsoft Azure
2 2 (5.56%) Serverless
3 1 (2.78%) npm
3 1 (2.78%) NuGet
3 1 (2.78%) SaaS
Communications & Networking
1 4 (11.11%) Internet
Database & Business Intelligence
1 20 (55.56%) SQL Server
2 1 (2.78%) Big Data
2 1 (2.78%) SQL Server 2008
2 1 (2.78%) SQL Server 2016
Development Applications
1 16 (44.44%) Visual Studio
2 15 (41.67%) Team Foundation Server
3 5 (13.89%) Git (software)
3 5 (13.89%) Mockito
4 1 (2.78%) gulp
4 1 (2.78%) Jasmine
4 1 (2.78%) JIRA
4 1 (2.78%) jspm
4 1 (2.78%) Octopus Deploy
4 1 (2.78%) PHPUnit
4 1 (2.78%) TeamCity
4 1 (2.78%) Visual Studio Code
General
1 1 (2.78%) Law
Job Titles
1 30 (83.33%) Developer
2 16 (44.44%) .NET Developer
2 16 (44.44%) C# Developer
3 15 (41.67%) C# .NET Developer
4 8 (22.22%) Senior Developer
5 5 (13.89%) Java Developer
5 5 (13.89%) Senior Java Developer
6 4 (11.11%) Front End Developer (Client-Side Developer)
6 4 (11.11%) Software Engineer
7 3 (8.33%) .NET Software Engineer
8 2 (5.56%) Software Developer
9 1 (2.78%) Analyst
9 1 (2.78%) Applications Developer
9 1 (2.78%) Business Analyst
9 1 (2.78%) C# Software Engineer
9 1 (2.78%) Lead Developer
9 1 (2.78%) Microsoft Developer
9 1 (2.78%) Senior Applications Developer
9 1 (2.78%) Senior C# Software Engineer
9 1 (2.78%) Senior Software Engineer
Libraries, Frameworks & Software Standards
1 23 (63.89%) .NET
2 19 (52.78%) RESTful
3 17 (47.22%) SOAP
3 17 (47.22%) WCF
3 17 (47.22%) Web Services
4 16 (44.44%) .NET Framework
5 7 (19.44%) React
6 6 (16.67%) Spring
7 5 (13.89%) AngularJS
7 5 (13.89%) REST
8 4 (11.11%) Backbone.js
8 4 (11.11%) Ember.js
9 3 (8.33%) .NET Core
10 2 (5.56%) ASP.NET
10 2 (5.56%) ASP.NET MVC
10 2 (5.56%) ASP.NET Web Forms
10 2 (5.56%) Entity Framework
10 2 (5.56%) HTML5
10 2 (5.56%) jQuery
10 2 (5.56%) Node.js
Miscellaneous
1 14 (38.89%) PMI
2 5 (13.89%) iPad
3 1 (2.78%) Analytical Skills
3 1 (2.78%) EPoS
3 1 (2.78%) Fintech
3 1 (2.78%) Greenfield Project
3 1 (2.78%) Mobile App
Operating Systems
1 17 (47.22%) Windows
2 1 (2.78%) Android
Processes & Methodologies
1 33 (91.67%) Agile Software Development
2 22 (61.11%) BDD
3 15 (41.67%) Acceptance Criteria
4 11 (30.56%) Continuous Integration
5 9 (25.00%) Unit Testing
6 6 (16.67%) Microservices
6 6 (16.67%) Pair Programming
6 6 (16.67%) Scrum
7 5 (13.89%) B2B
7 5 (13.89%) B2C
7 5 (13.89%) E-Commerce
7 5 (13.89%) MVC
7 5 (13.89%) Software Engineering
8 4 (11.11%) Front End Development
8 4 (11.11%) Prototyping
8 4 (11.11%) Software Architecture
8 4 (11.11%) Thought Leadership
8 4 (11.11%) Web Development
9 3 (8.33%) Kanban
10 2 (5.56%) Test Automation
Programming Languages
1 20 (55.56%) C#
2 19 (52.78%) SQL
3 17 (47.22%) T-SQL
4 8 (22.22%) JavaScript
5 5 (13.89%) Groovy
5 5 (13.89%) Java
5 5 (13.89%) Java 8
6 1 (2.78%) PHP
6 1 (2.78%) PowerShell
6 1 (2.78%) Python
6 1 (2.78%) TypeScript
Qualifications
1 14 (38.89%) PMI Certification
2 5 (13.89%) Degree
3 1 (2.78%) Computer Science Degree
3 1 (2.78%) ISTQB
Quality Assurance & Compliance
1 2 (5.56%) GDPR
2 1 (2.78%) QA
System Software
1 2 (5.56%) Docker
2 1 (2.78%) Virtual Machines
Systems Management
1 1 (2.78%) Ansible
1 1 (2.78%) Systems Management Server (SMS)
Vendors
1 18 (50.00%) Microsoft
2 5 (13.89%) Oracle
3 3 (8.33%) Xamarin