Period
to 22 November 2017

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 22 November 2017 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
Merseyside > Liverpool
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 18 46 25
Rank change year-on-year +28 -21 +8
Permanent jobs citing TDD 59 50 44
As % of all permanent IT jobs advertised in Liverpool 7.68% 4.59% 6.65%
As % of the Processes & Methodologies category 8.44% 5.15% 7.60%
Number of salaries quoted 55 38 41
Liverpool median annual salary £50,000 £40,000 £40,000
Median salary % change year-on-year +25.00% - -
10th Percentile £32,500 £32,375 £27,500
90th Percentile £62,500 £47,000 £47,500
Merseyside median annual salary £50,000 £40,000 £40,000
% change year-on-year +25.00% - +6.67%

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 699 971 579
As % of all permanent IT jobs advertised in Liverpool 91.02% 89.16% 87.46%
Number of salaries quoted 524 625 459
Liverpool median annual salary £41,000 £40,000 £40,000
Median salary % change year-on-year +2.50% - -
10th Percentile £27,500 £26,250 £24,450
90th Percentile £67,500 £57,500 £65,250
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 22 November 2017.

Salary histogram for TDD in Liverpool

For the 6 months to 22 November 2017, 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 Liverpool region with a requirement for TDD.

1 55 (93.22%) Agile Software Development
2 45 (76.27%) MVC
3 39 (66.10%) JavaScript
4 37 (62.71%) Selenium
5 36 (61.02%) PHP
5 36 (61.02%) REST
6 35 (59.32%) HTML
6 35 (59.32%) CSS
6 35 (59.32%) API Development
7 34 (57.63%) Software Engineering
8 33 (55.93%) Finance
8 33 (55.93%) Banking
8 33 (55.93%) Zend
8 33 (55.93%) CakePHP
8 33 (55.93%) SOAP
8 33 (55.93%) MySQL
8 33 (55.93%) CSS3
8 33 (55.93%) Laravel
8 33 (55.93%) HTML5
8 33 (55.93%) WebDriver
8 33 (55.93%) Functional Testing
8 33 (55.93%) Selenium IDE
9 18 (30.51%) Git (software)
10 16 (27.12%) BDD
11 15 (25.42%) .NET
12 14 (23.73%) C#
12 14 (23.73%) ASP.NET
13 13 (22.03%) SQL Server
13 13 (22.03%) NoSQL
13 13 (22.03%) RESTful

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 1 (1.69%) Elasticsearch
1 1 (1.69%) Tomcat
Cloud Services
1 5 (8.47%) Amazon AWS
1 5 (8.47%) Microsoft Azure
2 3 (5.08%) AWS CloudFormation
2 3 (5.08%) npm
3 2 (3.39%) SaaS
4 1 (1.69%) Amazon CloudWatch
4 1 (1.69%) GitHub
Communications & Networking
1 12 (20.34%) Internet
2 1 (1.69%) Skype
Database & Business Intelligence
1 33 (55.93%) MySQL
2 13 (22.03%) NoSQL
2 13 (22.03%) SQL Server
3 12 (20.34%) SQL Server 2016
4 3 (5.08%) Big Data
5 1 (1.69%) Hadoop
5 1 (1.69%) MongoDB
Development Applications
1 37 (62.71%) Selenium
2 33 (55.93%) Selenium IDE
2 33 (55.93%) WebDriver
3 18 (30.51%) Git (software)
4 3 (5.08%) Bower
4 3 (5.08%) JUnit
4 3 (5.08%) SonarQube
5 2 (3.39%) Jenkins
5 2 (3.39%) Maven
5 2 (3.39%) Xcode
6 1 (1.69%) Ant
6 1 (1.69%) Apache Ivy
6 1 (1.69%) Bitbucket
6 1 (1.69%) Cucumber
6 1 (1.69%) Eclipse
6 1 (1.69%) Gradle
6 1 (1.69%) JIRA
General
1 33 (55.93%) Banking
1 33 (55.93%) Finance
2 1 (1.69%) Marketing
Job Titles
1 53 (89.83%) Developer
2 36 (61.02%) PHP Developer
3 33 (55.93%) MySQL Developer
3 33 (55.93%) PHP MySQL Developer
4 26 (44.07%) Agile Developer
5 13 (22.03%) .NET Developer
5 13 (22.03%) C# .NET Developer
5 13 (22.03%) C# Developer
6 12 (20.34%) ASP.NET Developer
6 12 (20.34%) ASP.NET MVC Developer
6 12 (20.34%) C# ASP.NET Developer
7 7 (11.86%) Lead Developer
7 7 (11.86%) Lead PHP Developer
8 3 (5.08%) Senior Developer
9 2 (3.39%) iOS Developer
9 2 (3.39%) Java Developer
9 2 (3.39%) Junior
9 2 (3.39%) Junior Developer
9 2 (3.39%) Software Tester
9 2 (3.39%) Tester
Libraries, Frameworks & Software Standards
1 36 (61.02%) REST
2 35 (59.32%) CSS
2 35 (59.32%) HTML
3 33 (55.93%) CakePHP
3 33 (55.93%) CSS3
3 33 (55.93%) HTML5
3 33 (55.93%) Laravel
3 33 (55.93%) SOAP
4 15 (25.42%) .NET
5 14 (23.73%) ASP.NET
6 13 (22.03%) RESTful
7 12 (20.34%) ASP.NET MVC
7 12 (20.34%) ASP.NET MVC 5
7 12 (20.34%) ASP.NET Web API
7 12 (20.34%) Node.js
7 12 (20.34%) WCF
8 5 (8.47%) AngularJS
9 3 (5.08%) jQuery
10 2 (3.39%) .NET Framework
10 2 (3.39%) OAuth
Miscellaneous
1 12 (20.34%) Blog
1 12 (20.34%) Digital Media
2 3 (5.08%) Greenfield Project
3 2 (3.39%) Fintech
4 1 (1.69%) Computer Science
Operating Systems
1 6 (10.17%) Linux
2 2 (3.39%) Apple iOS
3 1 (1.69%) CentOS
3 1 (1.69%) Ubuntu
3 1 (1.69%) Windows
Processes & Methodologies
1 55 (93.22%) Agile Software Development
2 45 (76.27%) MVC
3 35 (59.32%) API Development
4 34 (57.63%) Software Engineering
5 33 (55.93%) Functional Testing
6 16 (27.12%) BDD
7 12 (20.34%) Web Application Development
8 7 (11.86%) Test Automation
9 4 (6.78%) Continuous Integration
9 4 (6.78%) DevOps
10 3 (5.08%) Continuous Delivery
10 3 (5.08%) Continuous Improvement
10 3 (5.08%) High Availability
10 3 (5.08%) Mentoring
10 3 (5.08%) Scrum
11 2 (3.39%) Disaster Recovery
11 2 (3.39%) iOS Development
11 2 (3.39%) Manual Testing
11 2 (3.39%) Security Testing
11 2 (3.39%) Software Testing
Programming Languages
1 39 (66.10%) JavaScript
2 36 (61.02%) PHP
3 14 (23.73%) C#
4 12 (20.34%) Ruby
5 4 (6.78%) SQL
6 3 (5.08%) Java
7 2 (3.39%) Apple Swift
7 2 (3.39%) Objective-C
8 1 (1.69%) Bash Shell
8 1 (1.69%) Groovy
8 1 (1.69%) Scala
Qualifications
1 3 (5.08%) Degree
2 2 (3.39%) ISEB
2 2 (3.39%) ISTQB
3 1 (1.69%) Computer Science Degree
Quality Assurance & Compliance
1 4 (6.78%) QA
Systems Management
1 3 (5.08%) Opscode Chef
1 3 (5.08%) Puppet
2 1 (1.69%) Ansible
2 1 (1.69%) ZABBIX
Vendors
1 33 (55.93%) Zend
2 1 (1.69%) Capita