Period
to 23 January 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 23 January 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
23 Jan 2019
Same period 2018 Same period 2017
Rank 14 17 19
Rank change year-on-year +3 +2 -
Contract jobs citing TDD 26 65 29
As % of all contract IT jobs advertised in Belfast 8.47% 13.77% 8.87%
As % of the Processes & Methodologies category 9.42% 15.15% 10.78%
Number of daily rates quoted 20 59 26
Belfast median daily rate £412 £430 £385
Median daily rate % change year-on-year -4.19% +11.69% -
10th Percentile £339 £385 £360
90th Percentile £425 £538 £420
County Antrim median daily rate £412 £430 £385
% change year-on-year -4.19% +11.69% -
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 276 429 269
As % of all contract IT jobs advertised in Belfast 89.90% 90.89% 82.26%
Number of daily rates quoted 175 314 183
Belfast median daily rate £400 £420 £365
Median daily rate % change year-on-year -4.76% +15.07% +12.31%
10th Percentile £308 £288 £213
90th Percentile £500 £538 £524
County Antrim median daily rate £400 £420 £365
% change year-on-year -4.76% +15.07% +12.31%
Number of hourly rates quoted 18 10 16
Belfast median hourly rate £18.06 £15.00 £13.00
Median hourly rate % change year-on-year +20.37% +15.38% -14.75%
10th Percentile £10.97 £10.85 £10.00
90th Percentile £48.75 £22.15 £18.00
County Antrim median hourly rate £18.06 £16.00 £13.00
% change year-on-year +12.84% +23.08% -14.75%

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 23 January 2019.

Contractor daily rate histogram for TDD in Belfast

For the 6 months to 23 January 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 25 (96.15%) Agile Software Development
2 19 (73.08%) JavaScript
2 19 (73.08%) SQL
3 18 (69.23%) Test Automation
4 17 (65.38%) AngularJS
5 16 (61.54%) Relational Database
5 16 (61.54%) CSS
5 16 (61.54%) RDBMS
6 15 (57.69%) Web Services
6 15 (57.69%) Java
6 15 (57.69%) MVC
6 15 (57.69%) Twitter Bootstrap
6 15 (57.69%) Backbone.js
6 15 (57.69%) RESTful
7 14 (53.85%) Cucumber
7 14 (53.85%) WebSphere
7 14 (53.85%) Degree
7 14 (53.85%) Gherkin
7 14 (53.85%) Jasmine
7 14 (53.85%) Ajax
7 14 (53.85%) Finance
7 14 (53.85%) Eclipse
7 14 (53.85%) JSP
7 14 (53.85%) Oracle
7 14 (53.85%) DB2
7 14 (53.85%) JUnit
7 14 (53.85%) XML
7 14 (53.85%) Struts
8 13 (50.00%) WebLogic
8 13 (50.00%) Project Management

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 14 (53.85%) WebSphere
2 13 (50.00%) WebLogic
3 4 (15.38%) Apache
4 1 (3.85%) Confluence
4 1 (3.85%) Drupal
Cloud Services
1 2 (7.69%) Amazon AWS
2 1 (3.85%) Microsoft Azure
Communications & Networking
1 3 (11.54%) SSH
1 3 (11.54%) SSL
2 1 (3.85%) FTP
Database & Business Intelligence
1 16 (61.54%) RDBMS
1 16 (61.54%) Relational Database
2 14 (53.85%) DB2
3 13 (50.00%) DB2 UDB
4 7 (26.92%) NoSQL
5 4 (15.38%) MongoDB
6 3 (11.54%) MySQL
7 1 (3.85%) Cosmos DB
7 1 (3.85%) RavenDB
7 1 (3.85%) SQL Server
Development Applications
1 14 (53.85%) Cucumber
1 14 (53.85%) Eclipse
1 14 (53.85%) Jasmine
1 14 (53.85%) JUnit
2 13 (50.00%) Bower
2 13 (50.00%) Grunt
3 5 (19.23%) JIRA
4 4 (15.38%) Selenium
4 4 (15.38%) TestComplete
5 2 (7.69%) TeamCity
6 1 (3.85%) Bitbucket
6 1 (3.85%) Git (software)
6 1 (3.85%) JSUnit
6 1 (3.85%) Octopus Deploy
General
1 14 (53.85%) Finance
2 13 (50.00%) Banking
3 1 (3.85%) Legal
Job Titles
1 18 (69.23%) Developer
2 15 (57.69%) Java Developer
3 12 (46.15%) Senior Developer
3 12 (46.15%) Senior Java Developer
4 4 (15.38%) Automation Tester
4 4 (15.38%) Tester
5 2 (7.69%) .NET Developer
5 2 (7.69%) Linux Specialist
6 1 (3.85%) Agile Test Manager
6 1 (3.85%) DBA
6 1 (3.85%) MySQL DBA
6 1 (3.85%) QA Manager
6 1 (3.85%) QA Test Manager
6 1 (3.85%) Report Developer
6 1 (3.85%) Scala Developer
6 1 (3.85%) Test Manager
Libraries, Frameworks & Software Standards
1 17 (65.38%) AngularJS
2 16 (61.54%) CSS
3 15 (57.69%) Backbone.js
3 15 (57.69%) RESTful
3 15 (57.69%) Twitter Bootstrap
3 15 (57.69%) Web Services
4 14 (53.85%) Ajax
4 14 (53.85%) Gherkin
4 14 (53.85%) JSP
4 14 (53.85%) Struts
4 14 (53.85%) XML
5 13 (50.00%) Hibernate
5 13 (50.00%) Spring
5 13 (50.00%) Spring Batch
5 13 (50.00%) Spring Integration
6 3 (11.54%) .NET
6 3 (11.54%) LAMP
6 3 (11.54%) Velocity
7 2 (7.69%) .NET Framework
7 2 (7.69%) HTML
Miscellaneous
1 4 (15.38%) Analytical Skills
1 4 (15.38%) Foreign Exchange (FX)
2 3 (11.54%) Clustering
2 3 (11.54%) N-Tier
3 1 (3.85%) Derivative
3 1 (3.85%) Enterprise Software
3 1 (3.85%) Equities
3 1 (3.85%) Greenfield Project
3 1 (3.85%) Mobile App
3 1 (3.85%) SWIFT
3 1 (3.85%) Virtual Team
Operating Systems
1 4 (15.38%) Linux
1 4 (15.38%) Unix
2 3 (11.54%) Red Hat Enterprise Linux
Processes & Methodologies
1 25 (96.15%) Agile Software Development
2 18 (69.23%) Test Automation
3 15 (57.69%) MVC
4 13 (50.00%) Project Management
4 13 (50.00%) Time Management
4 13 (50.00%) Waterfall
5 10 (38.46%) BDD
6 5 (19.23%) DevOps
7 4 (15.38%) Continuous Delivery
7 4 (15.38%) Continuous Integration
7 4 (15.38%) Issue Tracking
7 4 (15.38%) Requirements Management
7 4 (15.38%) Scrum
8 3 (11.54%) Disaster Recovery
8 3 (11.54%) High Availability
8 3 (11.54%) Performance Monitoring
8 3 (11.54%) Performance Tuning
8 3 (11.54%) Proactive Monitoring
8 3 (11.54%) Problem-Solving
9 2 (7.69%) Multithreading
Programming Languages
1 19 (73.08%) JavaScript
1 19 (73.08%) SQL
2 15 (57.69%) Java
3 9 (34.62%) Python
4 3 (11.54%) Bash Shell
4 3 (11.54%) C#
4 3 (11.54%) Perl
4 3 (11.54%) PHP
5 1 (3.85%) C++
5 1 (3.85%) Scala
5 1 (3.85%) TypeScript
Qualifications
1 14 (53.85%) Degree
2 1 (3.85%) ISEB
2 1 (3.85%) ISTQB
2 1 (3.85%) Microsoft Certification
Quality Assurance & Compliance
1 5 (19.23%) QA
System Software
1 1 (3.85%) Docker
Systems Management
1 4 (15.38%) HP ALM
2 3 (11.54%) Opscode Chef
2 3 (11.54%) Puppet
3 1 (3.85%) Ansible
Vendors
1 14 (53.85%) Oracle
2 4 (15.38%) HP
3 1 (3.85%) IBM
3 1 (3.85%) Microsoft