Period
to 19 August 2019

The following table provides summary statistics for contract job vacancies advertised in Belfast with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 19 August 2019 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
County Antrim > Belfast
6 months to
19 Aug 2019
Same period 2018 Same period 2017
Rank 37 25 35
Rank change year-on-year -12 +10 -5
Contract jobs citing TDD 10 26 53
As % of all contract IT jobs advertised in Belfast 2.44% 7.85% 9.46%
As % of the Processes & Methodologies category 3.11% 9.67% 10.91%
Number of daily rates quoted 7 24 49
Belfast median daily rate £475 £453 £403
Median daily rate % change year-on-year +4.97% +12.28% -7.89%
10th Percentile £415 £303 £363
90th Percentile £530 £585 £513
County Antrim median daily rate £475 £453 £403
% change year-on-year +4.97% +12.28% -7.89%
Number of hourly rates quoted 0 0 0
Belfast median hourly rate - - -
County Antrim median hourly rate - - -

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Belfast with a requirement for process or methodology skills.

All Process and Methodology Skills
Belfast
Contract vacancies with a requirement for process or methodology skills 322 269 486
As % of all contract IT jobs advertised in Belfast 78.54% 81.27% 86.79%
Number of daily rates quoted 183 203 414
Belfast median daily rate £420 £432 £413
Median daily rate % change year-on-year -2.67% +4.61% +30.95%
10th Percentile £213 £263 £306
90th Percentile £585 £518 £496
County Antrim median daily rate £420 £432 £413
% change year-on-year -2.67% +4.61% +30.95%
Number of hourly rates quoted 19 8 3
Belfast median hourly rate £12.50 £37.25 £16.00
Median hourly rate % change year-on-year -66.44% +132.81% +1.59%
10th Percentile £10.49 £17.28 £13.91
90th Percentile £17.38 £40.00 £20.49
County Antrim median hourly rate £12.50 £37.25 £16.00
% change year-on-year -66.44% +132.81% +12.28%

TDD
Job Vacancy Trend in Belfast

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

Job vacancy trend for TDD in Belfast

TDD
Contractor Daily Rate Trend in Belfast

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Belfast.

Contractor daily rate trend for TDD in Belfast

TDD
Contractor Daily Rate Histogram in Belfast

The daily rate distribution of IT jobs citing TDD in Belfast over the 6 months to 19 August 2019.

Contractor daily rate histogram for TDD in Belfast

For the 6 months to 19 August 2019, IT contractor 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 contract job ads across the Belfast region with a requirement for TDD.

1 9 (90.00%) Java
1 9 (90.00%) Git (software)
2 7 (70.00%) OOD
2 7 (70.00%) Spring
3 6 (60.00%) Maven
3 6 (60.00%) Continuous Integration
3 6 (60.00%) Microsoft Azure
3 6 (60.00%) Amazon AWS
3 6 (60.00%) Jenkins
3 6 (60.00%) Microservices
4 5 (50.00%) API Design
4 5 (50.00%) Gradle
4 5 (50.00%) OpenStack
4 5 (50.00%) OO
4 5 (50.00%) Web Services
4 5 (50.00%) Microsoft
5 4 (40.00%) Finance
5 4 (40.00%) Agile Software Development
5 4 (40.00%) Virtual Machines
6 3 (30.00%) AngularJS
6 3 (30.00%) Relational Database
6 3 (30.00%) Banking
6 3 (30.00%) JIRA
6 3 (30.00%) NoSQL
6 3 (30.00%) Multithreading
6 3 (30.00%) BDD
6 3 (30.00%) Python
6 3 (30.00%) C#
6 3 (30.00%) C++
6 3 (30.00%) RDBMS

TDD
Co-occurring IT Skills in Belfast 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 5 (50.00%) OpenStack
2 2 (20.00%) Apache
2 2 (20.00%) Confluence
Cloud Services
1 6 (60.00%) Amazon AWS
1 6 (60.00%) Microsoft Azure
2 1 (10.00%) GitHub
2 1 (10.00%) Google Cloud Platform
Database & Business Intelligence
1 3 (30.00%) NoSQL
1 3 (30.00%) RDBMS
1 3 (30.00%) Relational Database
2 1 (10.00%) Apache Cassandra
2 1 (10.00%) Big Data
2 1 (10.00%) MySQL
Development Applications
1 9 (90.00%) Git (software)
2 6 (60.00%) Jenkins
2 6 (60.00%) Maven
3 5 (50.00%) Gradle
4 3 (30.00%) JIRA
5 2 (20.00%) Bitbucket
5 2 (20.00%) SonarQube
5 2 (20.00%) TeamCity
6 1 (10.00%) CA Release Automation
6 1 (10.00%) Cucumber
6 1 (10.00%) Visual Studio
General
1 4 (40.00%) Finance
2 3 (30.00%) Banking
Job Titles
1 9 (90.00%) Developer
2 6 (60.00%) Java Developer
2 6 (60.00%) Senior Developer
3 5 (50.00%) Senior Java Developer
4 3 (30.00%) Java Engineer
4 3 (30.00%) Senior Java Engineer
5 1 (10.00%) C# Developer
5 1 (10.00%) C++ Developer
5 1 (10.00%) C++/C# Developer
5 1 (10.00%) Full Stack Developer
5 1 (10.00%) Java Software Engineer
5 1 (10.00%) React Developer
5 1 (10.00%) Senior C# Developer
5 1 (10.00%) Senior C++ Developer
5 1 (10.00%) Senior Java Software Engineer
5 1 (10.00%) Senior Software Engineer
5 1 (10.00%) Software Engineer
Libraries, Frameworks & Software Standards
1 7 (70.00%) Spring
2 5 (50.00%) Web Services
3 3 (30.00%) AngularJS
4 2 (20.00%) jQuery
4 2 (20.00%) Node.js
4 2 (20.00%) REST
4 2 (20.00%) Spring Boot
5 1 (10.00%) CSS3
5 1 (10.00%) Django
5 1 (10.00%) Hibernate
5 1 (10.00%) HTML5
5 1 (10.00%) JSON
5 1 (10.00%) Kafka
5 1 (10.00%) OAuth
5 1 (10.00%) OAuth2
5 1 (10.00%) OpenID
5 1 (10.00%) React
5 1 (10.00%) Redux
5 1 (10.00%) SAML
5 1 (10.00%) Spring MVC
Miscellaneous
1 2 (20.00%) Derivative
1 2 (20.00%) Equities
2 1 (10.00%) Analytical Skills
2 1 (10.00%) Data Structures
Operating Systems
1 2 (20.00%) Linux
Processes & Methodologies
1 7 (70.00%) OOD
2 6 (60.00%) Continuous Integration
2 6 (60.00%) Microservices
3 5 (50.00%) API Design
3 5 (50.00%) OO
4 4 (40.00%) Agile Software Development
5 3 (30.00%) BDD
5 3 (30.00%) Multithreading
6 2 (20.00%) Software Engineering
6 2 (20.00%) Test Automation
7 1 (10.00%) Asynchronous Programming
7 1 (10.00%) DevOps
7 1 (10.00%) Functional Testing
7 1 (10.00%) Low Latency
7 1 (10.00%) MVC
7 1 (10.00%) Performance Improvement
7 1 (10.00%) Refactoring
7 1 (10.00%) Regression Testing
7 1 (10.00%) Unit Testing
Programming Languages
1 9 (90.00%) Java
2 3 (30.00%) C#
2 3 (30.00%) C++
2 3 (30.00%) Python
3 2 (20.00%) JavaScript
3 2 (20.00%) SQL
Qualifications
1 2 (20.00%) Degree
System Software
1 4 (40.00%) Virtual Machines
Systems Management
1 1 (10.00%) HP Fortify
Vendors
1 5 (50.00%) Microsoft
2 1 (10.00%) Google