Period
to 25 August 2019

The following table provides summary statistics for permanent job vacancies advertised in Wiltshire with a requirement for TDD skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited TDD over the 6 months to 25 August 2019 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
South West > Wiltshire
6 months to
25 Aug 2019
Same period 2018 Same period 2017
Rank 68 31 52
Rank change year-on-year -37 +21 +21
Permanent jobs citing TDD 80 121 79
As % of all permanent IT jobs advertised in Wiltshire 4.22% 7.01% 5.05%
As % of the Processes & Methodologies category 4.54% 7.79% 5.50%
Number of salaries quoted 55 112 61
Wiltshire median annual salary £47,500 £45,000 £52,500
Median salary % change year-on-year +5.56% -14.29% +31.25%
10th Percentile £37,500 £26,250 £35,000
90th Percentile £67,500 £60,000 £57,500
South West median annual salary £45,000 £47,500 £45,000
% change year-on-year -5.26% +5.56% +5.88%

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

All Process and Methodology Skills
Wiltshire
Permanent vacancies with a requirement for process or methodology skills 1,764 1,554 1,436
As % of all permanent IT jobs advertised in Wiltshire 93.09% 90.09% 91.76%
Number of salaries quoted 1,339 1,362 1,235
Wiltshire median annual salary £47,500 £42,500 £40,750
Median salary % change year-on-year +11.76% +4.29% +1.88%
10th Percentile £27,500 £26,250 £25,000
90th Percentile £72,958 £61,250 £60,000
South West median annual salary £45,000 £42,500 £42,500
% change year-on-year +5.88% - +6.25%

TDD
Job Vacancy Trend in Wiltshire

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

Job vacancy trend for TDD in Wiltshire

TDD
Salary Trend in Wiltshire

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing TDD in Wiltshire.

Salary trend for TDD in Wiltshire

TDD
Salary Histogram in Wiltshire

The salary distribution of IT jobs citing TDD in Wiltshire over the 6 months to 25 August 2019.

Salary histogram for TDD in Wiltshire

TDD
Job Locations in Wiltshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the Wiltshire region over the 6 months to 25 August 2019. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Swindon -10 28 £47,500 -7.32% 4
Chippenham -10 18 £62,500 +72.41% 1
Salisbury -31 15 £40,000 - 1
Melksham - 5 £50,000 - 2
Warminster +1 2 £55,000 -
Corsham -10 1 £65,000 +136.36%
TDD
South West

For the 6 months to 25 August 2019, IT 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 permanent job ads across the Wiltshire region with a requirement for TDD.

1 69 (86.25%) Agile Software Development
2 37 (46.25%) .NET
3 36 (45.00%) C#
4 28 (35.00%) Git (software)
4 28 (35.00%) Continuous Improvement
5 26 (32.50%) JSON
5 26 (32.50%) REST
6 23 (28.75%) Finance
7 22 (27.50%) Scrum
7 22 (27.50%) Test Automation
8 21 (26.25%) Kanban
9 20 (25.00%) .NET Framework
9 20 (25.00%) MVC
9 20 (25.00%) SQL Server
9 20 (25.00%) Entity Framework
10 19 (23.75%) Jenkins
10 19 (23.75%) SOLID
10 19 (23.75%) ASP.NET
10 19 (23.75%) Continuous Integration
11 17 (21.25%) WCF
11 17 (21.25%) AngularJS
12 15 (18.75%) .NET Core
13 14 (17.50%) Matrix Organization
13 14 (17.50%) Decision-Making
13 14 (17.50%) TeamCity
13 14 (17.50%) Azure
13 14 (17.50%) AWS
13 14 (17.50%) Bash Shell
13 14 (17.50%) Games
13 14 (17.50%) JavaScript

TDD
Co-occurring IT Skills in Wiltshire 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 9 (11.25%) Apache
2 5 (6.25%) JBoss
3 2 (2.50%) Confluence
4 1 (1.25%) BizTalk Server
4 1 (1.25%) SharePoint
Applications
1 1 (1.25%) MS Visio
Business Applications
1 5 (6.25%) Dynamics CRM
Cloud Services
1 14 (17.50%) AWS
1 14 (17.50%) Azure
2 13 (16.25%) Dynamics 365
3 9 (11.25%) NuGet
4 8 (10.00%) iPaaS
5 4 (5.00%) Azure Functions
5 4 (5.00%) Serverless
6 3 (3.75%) Amazon EC2
6 3 (3.75%) Amazon SQS
6 3 (3.75%) SaaS
Communications & Networking
1 8 (10.00%) Reverse Proxy
2 1 (1.25%) Firewall
2 1 (1.25%) HTTP
2 1 (1.25%) Internet
2 1 (1.25%) Intranet
2 1 (1.25%) Network Security
2 1 (1.25%) SSH
2 1 (1.25%) TCP/IP
Database & Business Intelligence
1 20 (25.00%) SQL Server
2 6 (7.50%) RDBMS
2 6 (7.50%) Relational Database
3 5 (6.25%) Geospatial Data
3 5 (6.25%) GIS
3 5 (6.25%) MySQL
4 4 (5.00%) JasperReports
5 1 (1.25%) Hadoop
Development Applications
1 28 (35.00%) Git (software)
2 19 (23.75%) Jenkins
3 14 (17.50%) TeamCity
4 13 (16.25%) Bitbucket
4 13 (16.25%) JIRA
5 6 (7.50%) Maven
6 5 (6.25%) Ant
6 5 (6.25%) CruiseControl
6 5 (6.25%) FishEye
6 5 (6.25%) Hudson
6 5 (6.25%) JUnit
7 4 (5.00%) ClearQuest
8 3 (3.75%) PHPUnit
8 3 (3.75%) Subversion
9 1 (1.25%) eggPlant
9 1 (1.25%) GitLab
9 1 (1.25%) Gradle
9 1 (1.25%) Robot Framework
9 1 (1.25%) SoapUI
9 1 (1.25%) Zephyr
General
1 23 (28.75%) Finance
2 14 (17.50%) Games
3 9 (11.25%) Marketing
4 2 (2.50%) Electronics
5 1 (1.25%) Aerospace
5 1 (1.25%) Publishing
Job Titles
1 70 (87.50%) Developer
2 27 (33.75%) C# Developer
3 17 (21.25%) .NET Developer
3 17 (21.25%) C# .NET Developer
4 16 (20.00%) Lead Developer
5 15 (18.75%) Software Developer
6 13 (16.25%) iOS Developer
7 11 (13.75%) Full Stack Developer
8 9 (11.25%) Applications Developer
8 9 (11.25%) C# Application Developer
9 8 (10.00%) ASP.NET Developer
9 8 (10.00%) C# ASP.NET Developer
9 8 (10.00%) Software Engineer
10 7 (8.75%) .NET Applications Developer
10 7 (8.75%) AWS Developer
10 7 (8.75%) C# WPF Developer
10 7 (8.75%) WPF Developer
11 6 (7.50%) Java Engineer
12 5 (6.25%) PHP Developer
12 5 (6.25%) Principal Engineer
Libraries, Frameworks & Software Standards
1 37 (46.25%) .NET
2 26 (32.50%) JSON
2 26 (32.50%) REST
3 20 (25.00%) .NET Framework
3 20 (25.00%) Entity Framework
4 19 (23.75%) ASP.NET
5 17 (21.25%) AngularJS
5 17 (21.25%) WCF
6 15 (18.75%) .NET Core
7 14 (17.50%) Ajax
8 13 (16.25%) Cocoa
8 13 (16.25%) jQuery
9 10 (12.50%) ASP.NET Core
10 9 (11.25%) CSS
10 9 (11.25%) Lambda Expressions
10 9 (11.25%) WPF
11 6 (7.50%) Spring
11 6 (7.50%) Web Services
12 5 (6.25%) HTML
12 5 (6.25%) XML
Miscellaneous
1 13 (16.25%) Mobile App
1 13 (16.25%) Renewable Energy
2 10 (12.50%) Analytical Skills
3 6 (7.50%) Enterprise Software
4 4 (5.00%) Foreign Exchange (FX)
5 2 (2.50%) Video Conferencing
6 1 (1.25%) Algorithms
6 1 (1.25%) Embedded Systems
6 1 (1.25%) Linux Command Line
6 1 (1.25%) Public Cloud
6 1 (1.25%) Self-Motivation
6 1 (1.25%) Virtual Team
Operating Systems
1 13 (16.25%) Android
1 13 (16.25%) Apple iOS
2 7 (8.75%) Linux
3 4 (5.00%) Ubuntu
4 1 (1.25%) CentOS
4 1 (1.25%) Debian
4 1 (1.25%) FreeRTOS
4 1 (1.25%) Red Hat Enterprise Linux
4 1 (1.25%) Unix
Processes & Methodologies
1 69 (86.25%) Agile Software Development
2 28 (35.00%) Continuous Improvement
3 22 (27.50%) Scrum
3 22 (27.50%) Test Automation
4 21 (26.25%) Kanban
5 20 (25.00%) MVC
6 19 (23.75%) Continuous Integration
6 19 (23.75%) SOLID
7 14 (17.50%) Decision-Making
7 14 (17.50%) Matrix Management
7 14 (17.50%) Matrix Organization
8 13 (16.25%) iOS Development
8 13 (16.25%) Lean Software Development
8 13 (16.25%) Mobile Application Development
8 13 (16.25%) Wireframes
9 11 (13.75%) Problem-Solving
9 11 (13.75%) Software Testing
10 10 (12.50%) Open Source
10 10 (12.50%) Software Engineering
10 10 (12.50%) Structured Programming
Programming Languages
1 36 (45.00%) C#
2 14 (17.50%) Bash Shell
2 14 (17.50%) JavaScript
3 13 (16.25%) Apple Swift
3 13 (16.25%) Objective-C
3 13 (16.25%) Ruby
4 8 (10.00%) Java
5 5 (6.25%) C
5 5 (6.25%) Java 8
5 5 (6.25%) PHP
6 4 (5.00%) SQL
7 3 (3.75%) PHP 7
8 2 (2.50%) C++
8 2 (2.50%) Python
9 1 (1.25%) Clojure
9 1 (1.25%) Embedded C
9 1 (1.25%) Kotlin
9 1 (1.25%) Scala
9 1 (1.25%) VB.NET
Qualifications
1 3 (3.75%) SC Cleared
1 3 (3.75%) Security Cleared
2 2 (2.50%) Degree
Quality Assurance & Compliance
1 3 (3.75%) QA
System Software
1 10 (12.50%) Docker
2 5 (6.25%) Active Directory
Systems Management
1 10 (12.50%) Kubernetes
2 9 (11.25%) Opscode Chef
3 1 (1.25%) Ambari
3 1 (1.25%) Ansible
3 1 (1.25%) Mesos
3 1 (1.25%) SELinux
Vendors
1 10 (12.50%) Oracle
2 7 (8.75%) Atlassian
3 4 (5.00%) Adobe
3 4 (5.00%) Google
3 4 (5.00%) Microsoft
4 1 (1.25%) CA