Period
to 24 November 2017

The following table provides summary statistics for contract job vacancies advertised in Sheffield 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 24 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)
South Yorkshire > Sheffield
6 months to
24 Nov 2017
Same period 2016 Same period 2015
Rank 20 13 21
Rank change year-on-year -7 +8 -1
Contract jobs citing TDD 50 84 54
As % of all contract IT jobs advertised in Sheffield 7.35% 8.70% 6.99%
As % of the Processes & Methodologies category 8.64% 10.62% 8.40%
Number of daily rates quoted 45 71 78
Sheffield median daily rate £475 £450 £400
Median daily rate % change year-on-year +5.56% +12.50% +6.67%
10th Percentile £364 £369 £263
90th Percentile £645 £625 £575
South Yorkshire median daily rate £463 £450 £400
% change year-on-year +2.78% +12.50% +10.34%
Number of hourly rates quoted 0 0 0
Sheffield median hourly rate - - -
South Yorkshire 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 Sheffield with a requirement for process or methodology skills.

All Process and Methodology Skills
Sheffield
Contract vacancies with a requirement for process or methodology skills 579 791 643
As % of all contract IT jobs advertised in Sheffield 85.15% 81.97% 83.18%
Number of daily rates quoted 317 536 488
Sheffield median daily rate £450 £425 £400
Median daily rate % change year-on-year +5.88% +6.25% +14.29%
10th Percentile £273 £290 £250
90th Percentile £600 £575 £552
South Yorkshire median daily rate £425 £425 £400
% change year-on-year - +6.25% +19.40%
Number of hourly rates quoted 7 15 21
Sheffield median hourly rate £23.08 £27.50 £12.50
Median hourly rate % change year-on-year -16.09% +120.00% -19.94%
10th Percentile £16.88 £13.00 £9.25
90th Percentile £41.49 £49.00 £15.00
South Yorkshire median hourly rate £23.08 £22.50 £13.88
% change year-on-year +2.56% +62.16% -11.76%

TDD
Job Vacancy Trend in Sheffield

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

Job vacancy trend for TDD in Sheffield

TDD
Contractor Daily Rate Trend in Sheffield

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

Contractor daily rate trend for TDD in Sheffield

TDD
Contractor Daily Rate Histogram in Sheffield

The daily rate distribution of IT jobs citing TDD in Sheffield over the 6 months to 24 November 2017.

Contractor daily rate histogram for TDD in Sheffield

TDD
Contractor Hourly Rate Trend in Sheffield

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Sheffield.

Contractor hourly rate trend for TDD in Sheffield

For the 6 months to 24 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 Sheffield region with a requirement for TDD.

1 41 (82.00%) Java
2 37 (74.00%) Agile Software Development
3 26 (52.00%) JavaScript
4 22 (44.00%) Test Automation
5 20 (40.00%) Git (software)
5 20 (40.00%) BDD
6 19 (38.00%) Continuous Delivery
7 17 (34.00%) DevOps
8 16 (32.00%) Open Source
8 16 (32.00%) Continuous Integration
8 16 (32.00%) Selenium
8 16 (32.00%) HTML
8 16 (32.00%) CSS
8 16 (32.00%) Linux
9 15 (30.00%) Unix
10 14 (28.00%) MySQL
11 13 (26.00%) Mac OS X
11 13 (26.00%) WebDriver
11 13 (26.00%) Mentoring
12 12 (24.00%) REST
12 12 (24.00%) RESTful
13 11 (22.00%) Web Services
13 11 (22.00%) MongoDB
13 11 (22.00%) AngularJS
13 11 (22.00%) Microservices
14 10 (20.00%) Jenkins
14 10 (20.00%) Python
14 10 (20.00%) Scrum
14 10 (20.00%) Web Development
14 10 (20.00%) Ruby

TDD
Co-occurring IT Skills in Sheffield 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 4 (8.00%) CMS
1 4 (8.00%) Confluence
2 3 (6.00%) JBoss
2 3 (6.00%) WebSphere
3 2 (4.00%) WordPress
4 1 (2.00%) Adobe Experience Manager
4 1 (2.00%) WebLogic
Cloud Services
1 6 (12.00%) Microsoft Azure
2 4 (8.00%) Amazon AWS
3 3 (6.00%) Amazon CloudWatch
3 3 (6.00%) GitHub
3 3 (6.00%) Google Cloud Platform
4 2 (4.00%) AWS CloudFormation
4 2 (4.00%) Slack
5 1 (2.00%) PaaS
Communications & Networking
1 3 (6.00%) HTTP
Database & Business Intelligence
1 14 (28.00%) MySQL
2 11 (22.00%) MongoDB
3 6 (12.00%) NoSQL
4 5 (10.00%) PostgreSQL
4 5 (10.00%) Relational Database
5 3 (6.00%) Apache Cassandra
5 3 (6.00%) SQL Server
6 2 (4.00%) Big Data
6 2 (4.00%) Oracle Database
Development Applications
1 20 (40.00%) Git (software)
2 16 (32.00%) Selenium
3 13 (26.00%) WebDriver
4 10 (20.00%) Jenkins
5 9 (18.00%) Cucumber
6 5 (10.00%) JIRA
7 4 (8.00%) Bitbucket
7 4 (8.00%) Karma Test Runner
8 3 (6.00%) Ant
8 3 (6.00%) Jasmine
8 3 (6.00%) JUnit
8 3 (6.00%) Maven
8 3 (6.00%) Subversion
8 3 (6.00%) Team Foundation Server
8 3 (6.00%) TeamCity
9 1 (2.00%) Mercurial
9 1 (2.00%) Protractor
9 1 (2.00%) Zephyr
General
1 4 (8.00%) Telecoms
2 3 (6.00%) Electronics
2 3 (6.00%) Finance
2 3 (6.00%) Manufacturing
2 3 (6.00%) Marketing
3 2 (4.00%) Billing
3 2 (4.00%) Retail
4 1 (2.00%) Advertising
Job Titles
1 22 (44.00%) Developer
2 15 (30.00%) Java Developer
3 10 (20.00%) Architect
4 8 (16.00%) Automation Tester
4 8 (16.00%) Full Stack Developer
4 8 (16.00%) Tester
5 7 (14.00%) Software Engineer
6 5 (10.00%) .NET Developer
6 5 (10.00%) Java Automation Tester
6 5 (10.00%) Lead Software Engineer
6 5 (10.00%) Selenium Automation Tester
6 5 (10.00%) Selenium Tester
6 5 (10.00%) Technical Architect
7 3 (6.00%) Java Architect
7 3 (6.00%) Java Technical Architect
7 3 (6.00%) Senior .NET Developer
7 3 (6.00%) Senior Developer
7 3 (6.00%) Web Automation Tester
7 3 (6.00%) Web Tester
8 2 (4.00%) Analyst
Libraries, Frameworks & Software Standards
1 16 (32.00%) CSS
1 16 (32.00%) HTML
2 12 (24.00%) REST
2 12 (24.00%) RESTful
3 11 (22.00%) AngularJS
3 11 (22.00%) Web Services
4 9 (18.00%) Node.js
5 8 (16.00%) Angular 2
5 8 (16.00%) React
6 6 (12.00%) jQuery
6 6 (12.00%) XML
7 5 (10.00%) .NET
7 5 (10.00%) .NET Framework
7 5 (10.00%) ASP.NET
7 5 (10.00%) Entity Framework
7 5 (10.00%) SOAP
7 5 (10.00%) Spring
8 4 (8.00%) CSS3
8 4 (8.00%) HTML5
8 4 (8.00%) KnockoutJS
Miscellaneous
1 4 (8.00%) Greenfield Project
2 3 (6.00%) User Experience
3 1 (2.00%) Algorithms
3 1 (2.00%) Data Structures
Operating Systems
1 16 (32.00%) Linux
2 15 (30.00%) Unix
3 13 (26.00%) Mac OS X
4 3 (6.00%) Red Hat Enterprise Linux
Processes & Methodologies
1 37 (74.00%) Agile Software Development
2 22 (44.00%) Test Automation
3 20 (40.00%) BDD
4 19 (38.00%) Continuous Delivery
5 17 (34.00%) DevOps
6 16 (32.00%) Continuous Integration
6 16 (32.00%) Open Source
7 13 (26.00%) Mentoring
8 11 (22.00%) Microservices
9 10 (20.00%) Scrum
9 10 (20.00%) Web Development
10 9 (18.00%) Configuration Management
10 9 (18.00%) Integration Testing
11 8 (16.00%) Software Engineering
11 8 (16.00%) Web Design
12 6 (12.00%) Responsive Web Design
12 6 (12.00%) Unit Testing
13 5 (10.00%) Coaching
13 5 (10.00%) SFIA
13 5 (10.00%) Test Scripting
Programming Languages
1 41 (82.00%) Java
2 26 (52.00%) JavaScript
3 10 (20.00%) Python
3 10 (20.00%) Ruby
4 9 (18.00%) SQL
5 5 (10.00%) C#
6 2 (4.00%) Bash Shell
6 2 (4.00%) PHP
6 2 (4.00%) PHP 5
6 2 (4.00%) Scala
Qualifications
1 3 (6.00%) Security Cleared
2 2 (4.00%) CTC Cleared
2 2 (4.00%) SC Cleared
3 1 (2.00%) BC Cleared
3 1 (2.00%) BPSS Clearance
Quality Assurance & Compliance
1 3 (6.00%) GCP
System Software
1 3 (6.00%) Docker
Systems Management
1 3 (6.00%) Grafana
1 3 (6.00%) Prometheus
2 2 (4.00%) Terraform
3 1 (2.00%) Opscode Chef
3 1 (2.00%) Puppet
Vendors
1 5 (10.00%) Microsoft
2 4 (8.00%) Oracle
3 3 (6.00%) Red Hat
3 3 (6.00%) SAP
3 3 (6.00%) Splunk
4 2 (4.00%) Zend
5 1 (2.00%) Adobe
5 1 (2.00%) ServiceNow