Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies advertised in Salford 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 22 November 2017 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)
Manchester > Salford
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 18 7 2
Rank change year-on-year -11 -5 +8
Contract jobs citing TDD 8 23 22
As % of all contract IT jobs advertised in Salford 6.25% 20.18% 28.95%
As % of the Processes & Methodologies category 7.02% 22.12% 32.35%
Number of daily rates quoted 6 20 19
Salford median daily rate £425 £426 £375
Median daily rate % change year-on-year -0.29% +13.67% +7.14%
10th Percentile £375 £333 £306
90th Percentile £506 £478 £448
Manchester median daily rate £400 £425 £375
% change year-on-year -5.88% +13.33% +15.38%
Number of hourly rates quoted 0 0 0
Salford median hourly rate - - -
Manchester 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 Salford with a requirement for process or methodology skills.

All Process and Methodology Skills
Salford
Contract vacancies with a requirement for process or methodology skills 114 104 68
As % of all contract IT jobs advertised in Salford 89.06% 91.23% 89.47%
Number of daily rates quoted 77 87 51
Salford median daily rate £425 £413 £350
Median daily rate % change year-on-year +3.03% +17.86% -
10th Percentile £286 £220 £200
90th Percentile £579 £595 £488
Manchester median daily rate £400 £400 £375
% change year-on-year - +6.67% +7.22%
Number of hourly rates quoted 14 2 6
Salford median hourly rate £17.43 £19.25 £16.40
Median hourly rate % change year-on-year -9.45% +17.36% -
10th Percentile £12.16 £15.73 £13.57
90th Percentile £31.50 £23.78 £19.25
Manchester median hourly rate £17.50 £15.25 £19.50
% change year-on-year +14.75% -21.79% +30.00%

TDD
Job Vacancy Trend in Salford

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

Job vacancy trend for TDD in Salford

TDD
Contractor Daily Rate Trend in Salford

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

Contractor daily rate trend for TDD in Salford

For the 6 months to 22 November 2017, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Salford region with a requirement for TDD.

1 8 (100.00%) JavaScript
1 8 (100.00%) CSS
1 8 (100.00%) Agile Software Development
1 8 (100.00%) Node.js
2 7 (87.50%) Software Engineering
2 7 (87.50%) HTML
3 6 (75.00%) Kanban
4 5 (62.50%) Git (software)
4 5 (62.50%) Continuous Integration
5 4 (50.00%) GitHub
5 4 (50.00%) Ruby
5 4 (50.00%) Ruby on Rails
5 4 (50.00%) Unit Testing
5 4 (50.00%) SMS
5 4 (50.00%) Workflow
6 3 (37.50%) Test Automation
6 3 (37.50%) Continuous Delivery
7 2 (25.00%) Line Management
7 2 (25.00%) JSON
7 2 (25.00%) QA
7 2 (25.00%) Performance Testing
7 2 (25.00%) HTTP
7 2 (25.00%) DNS
8 1 (12.50%) Java
8 1 (12.50%) E-Commerce
8 1 (12.50%) Systems Analysis
8 1 (12.50%) Finance
8 1 (12.50%) Scrum
8 1 (12.50%) JIRA
8 1 (12.50%) Business Desktop Deployment

TDD
Co-occurring IT Skills in Salford 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:

Cloud Services
1 4 (50.00%) GitHub
2 1 (12.50%) Amazon AWS
2 1 (12.50%) Amazon EC2
2 1 (12.50%) AWS CloudFormation
2 1 (12.50%) AWS Lambda
2 1 (12.50%) Serverless
2 1 (12.50%) Virtual Private Cloud
Communications & Networking
1 4 (50.00%) SMS
2 2 (25.00%) DNS
2 2 (25.00%) HTTP
Development Applications
1 5 (62.50%) Git (software)
2 1 (12.50%) Jenkins
2 1 (12.50%) JIRA
General
1 1 (12.50%) Finance
Job Titles
1 3 (37.50%) Developer
1 3 (37.50%) JavaScript Developer
2 2 (25.00%) JavaScript Engineer
2 2 (25.00%) Node.js Developer
2 2 (25.00%) Software Engineer
3 1 (12.50%) Senior Developer
3 1 (12.50%) Senior JavaScript Developer
3 1 (12.50%) Senior Software Engineer
3 1 (12.50%) Software Developer
Libraries, Frameworks & Software Standards
1 8 (100.00%) CSS
1 8 (100.00%) Node.js
2 7 (87.50%) HTML
3 4 (50.00%) Ruby on Rails
4 2 (25.00%) JSON
5 1 (12.50%) CSS3
5 1 (12.50%) HTML5
5 1 (12.50%) React
5 1 (12.50%) Sass
Processes & Methodologies
1 8 (100.00%) Agile Software Development
2 7 (87.50%) Software Engineering
3 6 (75.00%) Kanban
4 5 (62.50%) Continuous Integration
5 4 (50.00%) Unit Testing
5 4 (50.00%) Workflow
6 3 (37.50%) Continuous Delivery
6 3 (37.50%) Test Automation
7 2 (25.00%) Line Management
7 2 (25.00%) Performance Testing
8 1 (12.50%) E-Commerce
8 1 (12.50%) OpenUP
8 1 (12.50%) Scrum
8 1 (12.50%) SDLC
8 1 (12.50%) Systems Analysis
Programming Languages
1 8 (100.00%) JavaScript
2 4 (50.00%) Ruby
3 1 (12.50%) Java
Quality Assurance & Compliance
1 2 (25.00%) QA
Systems Management
1 1 (12.50%) Business Desktop Deployment