Period
to 6 April 2020

The following table provides summary statistics for contract job vacancies advertised in Surrey 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 6 April 2020 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 East > Surrey
6 months to
6 Apr 2020
Same period 2019 Same period 2018
Rank 58 21 29
Rank change year-on-year -37 +8 +3
Contract jobs citing TDD 36 215 194
As % of all contract jobs advertised in Surrey 2.64% 7.48% 6.60%
As % of the Processes & Methodologies category 3.13% 8.49% 7.62%
Number of daily rates quoted 29 178 171
Median daily rate £463 £500 £475
Median daily rate % change year-on-year -7.50% +5.26% +11.76%
10th Percentile £354 £370 £363
90th Percentile £638 £625 £588
South East median daily rate £463 £475 £450
% change year-on-year -2.63% +5.56% +7.14%
Number of hourly rates quoted 0 0 1
Median hourly rate - - £35.00
South East median hourly rate £51.50 £48.40 £45.00
% change year-on-year +6.40% +7.56% -7.22%

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 Surrey with a requirement for process or methodology skills.

All Process and Methodology Skills
Surrey
Contract vacancies with a requirement for process or methodology skills 1,149 2,533 2,545
As % of all contract IT jobs advertised in Surrey 84.11% 88.17% 86.56%
Number of daily rates quoted 798 1,830 1,792
Median daily rate £463 £475 £475
Median daily rate % change year-on-year -2.63% - +11.76%
10th Percentile £259 £313 £313
90th Percentile £625 £625 £588
South East median daily rate £450 £450 £425
% change year-on-year - +5.88% +3.03%
Number of hourly rates quoted 44 47 63
Median hourly rate £20.50 £22.00 £35.00
Median hourly rate % change year-on-year -6.82% -37.14% +28.44%
10th Percentile £12.75 £11.22 £10.40
90th Percentile £52.50 £53.00 £50.65
Median hourly rate £23.41 £24.91 £22.50
% change year-on-year -6.03% +10.71% -

TDD
Job Vacancy Trend in Surrey

Job postings citing TDD as a proportion of all IT jobs advertised in Surrey.

Job vacancy trend for TDD in Surrey

TDD
Contractor Daily Rate Trend in Surrey

3-month moving average daily rate quoted in jobs citing TDD in Surrey.

Daily rate trend for TDD in Surrey

TDD
Daily Rate Histogram in Surrey

Daily rate distribution for jobs citing TDD in Surrey over the 6 months to 6 April 2020.

Daily rate histogram for TDD in Surrey

TDD
Contractor Hourly Rate Trend in Surrey

3-month moving average hourly rates quoted in jobs citing TDD in Surrey.

Hourly rate trend for TDD in Surrey

TDD
Contract Job Locations in Surrey

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Surrey region over the 6 months to 6 April 2020. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Epsom - 11 £400 - 1
Camberley 0 10 £625 +10.13% 3
Staines +5 4 £463 -7.50%
Egham +7 1 £500 - 1
Leatherhead -10 1 £500 +17.65% 2
TDD
South East

For the 6 months to 6 April 2020, 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 Surrey region with a requirement for TDD.

1 28 (77.78%) Agile Software Development
2 20 (55.56%) Java
3 18 (50.00%) Scrum
4 17 (47.22%) JavaScript
5 15 (41.67%) RESTful
6 14 (38.89%) Node.js
6 14 (38.89%) SQL
7 12 (33.33%) Python
7 12 (33.33%) Finance
7 12 (33.33%) Data Integration
8 11 (30.56%) Azure
8 11 (30.56%) BDD
9 10 (27.78%) DevOps
9 10 (27.78%) Test Automation
10 9 (25.00%) Microservices
11 8 (22.22%) Serverless
11 8 (22.22%) Middleware
12 7 (19.44%) C#
12 7 (19.44%) AWS
12 7 (19.44%) Cucumber
12 7 (19.44%) Event-Driven Architecture
12 7 (19.44%) React
13 6 (16.67%) Jenkins
13 6 (16.67%) Selenium
13 6 (16.67%) CSS
13 6 (16.67%) JUnit
14 5 (13.89%) HTML
14 5 (13.89%) SOA
14 5 (13.89%) ETL
14 5 (13.89%) Microsoft

TDD
Co-occurring IT Skills in Surrey 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 (2.78%) IIS
Cloud Services
1 11 (30.56%) Azure
2 8 (22.22%) Serverless
3 7 (19.44%) AWS
4 5 (13.89%) Heroku
5 4 (11.11%) Amazon S3
5 4 (11.11%) AWS Lambda
5 4 (11.11%) Kong
6 2 (5.56%) GitHub
7 1 (2.78%) Azure Data Factory
7 1 (2.78%) Azure Functions
7 1 (2.78%) Dynamics 365
7 1 (2.78%) PaaS
7 1 (2.78%) Power Platform
Communications & Networking
1 4 (11.11%) AMQP
Database & Business Intelligence
1 4 (11.11%) Amazon Athena
1 4 (11.11%) Azure SQL Database
1 4 (11.11%) Cosmos DB
1 4 (11.11%) MongoDB
1 4 (11.11%) NoSQL
2 3 (8.33%) Big Data
2 3 (8.33%) Data Lake
2 3 (8.33%) Microsoft Analysis Services
3 2 (5.56%) Relational Database
3 2 (5.56%) SQL Server
4 1 (2.78%) BusinessObjects
4 1 (2.78%) Data Warehouse
4 1 (2.78%) GIS
4 1 (2.78%) Power BI
4 1 (2.78%) QlikView
4 1 (2.78%) SAP BW
4 1 (2.78%) SAP HANA
Development Applications
1 7 (19.44%) Cucumber
2 6 (16.67%) Jenkins
2 6 (16.67%) JUnit
2 6 (16.67%) Selenium
3 4 (11.11%) Atlassian Bamboo
4 2 (5.56%) Eclipse
4 2 (5.56%) Git (software)
4 2 (5.56%) IntelliJ
4 2 (5.56%) SpecFlow
5 1 (2.78%) JIRA
5 1 (2.78%) Subversion
5 1 (2.78%) Team Foundation Server
5 1 (2.78%) Visual Studio
General
1 12 (33.33%) Finance
2 3 (8.33%) Automotive
3 2 (5.56%) Banking
3 2 (5.56%) Financial Institution
4 1 (2.78%) French Language
4 1 (2.78%) Investment Banking
4 1 (2.78%) Public Sector
4 1 (2.78%) Spanish Language
Job Titles
1 29 (80.56%) Developer
2 8 (22.22%) JavaScript Developer
3 5 (13.89%) Node.js Developer
4 4 (11.11%) Azure Developer
4 4 (11.11%) Python Developer
4 4 (11.11%) Python Engineer
5 3 (8.33%) C# Developer
5 3 (8.33%) Developer in Test
5 3 (8.33%) Java Developer
5 3 (8.33%) React Developer
5 3 (8.33%) Software Developer
5 3 (8.33%) Web Developer
6 2 (5.56%) Front End Developer (Client-Side Developer)
6 2 (5.56%) Middleware Developer
7 1 (2.78%) Agile Java Developer
7 1 (2.78%) C# Software Developer
7 1 (2.78%) Development Team Leader
7 1 (2.78%) Principal Developer
7 1 (2.78%) Scrum Master
7 1 (2.78%) Team Leader
Libraries, Frameworks & Software Standards
1 15 (41.67%) RESTful
2 14 (38.89%) Node.js
3 8 (22.22%) Middleware
4 7 (19.44%) React
5 6 (16.67%) CSS
6 5 (13.89%) HTML
6 5 (13.89%) REST
7 4 (11.11%) Kafka
7 4 (11.11%) Spring
8 3 (8.33%) .NET
8 3 (8.33%) AngularJS
9 2 (5.56%) ASP.NET
9 2 (5.56%) ASP.NET Web API
9 2 (5.56%) Gherkin
9 2 (5.56%) JSON
9 2 (5.56%) RAML
9 2 (5.56%) Spring Cloud
10 1 (2.78%) ASP.NET MVC 5
10 1 (2.78%) Spring Boot
10 1 (2.78%) Web Services
Miscellaneous
1 5 (13.89%) Greenfield Project
2 3 (8.33%) Data Centre
3 2 (5.56%) Algorithms
3 2 (5.56%) Analytical Skills
3 2 (5.56%) Linux Command Line
Operating Systems
1 2 (5.56%) Linux
1 2 (5.56%) Unix
Processes & Methodologies
1 28 (77.78%) Agile Software Development
2 18 (50.00%) Scrum
3 12 (33.33%) Data Integration
4 11 (30.56%) BDD
5 10 (27.78%) DevOps
5 10 (27.78%) Test Automation
6 9 (25.00%) Microservices
7 7 (19.44%) Event-Driven Architecture
8 5 (13.89%) Analytics
8 5 (13.89%) API Design
8 5 (13.89%) ETL
8 5 (13.89%) Pair Programming
8 5 (13.89%) SOA
8 5 (13.89%) Unit Testing
9 4 (11.11%) Continuous Integration
9 4 (11.11%) Extreme Programming
9 4 (11.11%) Web Development
10 3 (8.33%) Computer Science
10 3 (8.33%) Data Modelling
10 3 (8.33%) OO
Programming Languages
1 20 (55.56%) Java
2 17 (47.22%) JavaScript
3 14 (38.89%) SQL
4 12 (33.33%) Python
5 7 (19.44%) C#
6 3 (8.33%) C
7 2 (5.56%) Shell Script
8 1 (2.78%) Java 8
Qualifications
1 1 (2.78%) Computer Science Degree
1 1 (2.78%) Degree
Quality Assurance & Compliance
1 1 (2.78%) Data Quality
1 1 (2.78%) QA
Vendors
1 5 (13.89%) Microsoft
2 3 (8.33%) Databricks
3 2 (5.56%) MuleSoft
4 1 (2.78%) CA Agile Central
4 1 (2.78%) Cognos
4 1 (2.78%) IBM
4 1 (2.78%) Salesforce.com
4 1 (2.78%) SAP
4 1 (2.78%) Sitecore