Period
to 19 January 2021

The following table provides summary statistics for permanent job vacancies advertised in the North of England 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 19 January 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
England > North of England
6 months to
19 Jan 2021
Same period 2020 Same period 2019
Rank 30 26 24
Rank change year-on-year -4 -2 -4
Permanent jobs citing TDD 641 1,223 1,738
As % of all permanent jobs advertised in the North of England 6.74% 7.64% 9.05%
As % of the Processes & Methodologies category 7.26% 8.29% 9.84%
Number of salaries quoted 738 1,117 1,601
Median annual salary £52,500 £50,000 £48,463
Median salary % change year-on-year +5.00% +3.17% +7.69%
10th Percentile £36,600 £33,750 £32,500
90th Percentile £78,250 £67,500 £75,000
England median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +7.84%

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 the North of England with a requirement for process or methodology skills.

All Process and Methodology Skills
North of England
Permanent vacancies with a requirement for process or methodology skills 8,834 14,754 17,666
As % of all permanent IT jobs advertised in the North of England 92.87% 92.11% 91.96%
Number of salaries quoted 7,459 11,901 14,400
Median annual salary £47,500 £45,000 £45,000
Median salary % change year-on-year +5.56% - +5.88%
10th Percentile £30,750 £27,500 £26,250
90th Percentile £70,000 £68,750 £67,500
England median annual salary £55,000 £55,000 £52,500
% change year-on-year - +4.76% +5.00%

TDD
Job Vacancy Trend in the North of England

Job postings citing TDD as a proportion of all IT jobs advertised in the North of England.

Job vacancy trend for TDD in the North of England

TDD
Salary Trend in the North of England

3-month moving average salary quoted in jobs citing TDD in the North of England.

Salary trend for TDD in the North of England

TDD
Salary Histogram in the North of England

Salary distribution for jobs citing TDD in the North of England over the 6 months to 19 January 2021.

Salary histogram for TDD in the North of England

TDD
Job Locations in the North of England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing TDD within the North of England region over the 6 months to 19 January 2021. 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
North West -7 334 £55,000 +4.76% 155
Yorkshire -6 250 £50,000 - 62
North East +5 57 £50,000 +11.11% 25
TDD
England

For the 6 months to 19 January 2021, 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 North of England region with a requirement for TDD.

1 424 (66.15%) Agile Software Development
2 311 (48.52%) JavaScript
3 282 (43.99%) C#
4 213 (33.23%) Software Engineering
5 202 (31.51%) .NET
6 199 (31.05%) Java
7 179 (27.93%) SQL
8 173 (26.99%) AngularJS
9 161 (25.12%) DevOps
10 151 (23.56%) BDD
11 146 (22.78%) AWS
12 143 (22.31%) Python
13 139 (21.68%) Azure
14 136 (21.22%) Docker
14 136 (21.22%) HTML
15 133 (20.75%) Microservices
16 132 (20.59%) CSS
17 131 (20.44%) Git (software)
18 127 (19.81%) Continuous Integration
19 124 (19.34%) Test Automation
20 116 (18.10%) Unit Testing
21 104 (16.22%) .NET Core
22 102 (15.91%) OO
23 98 (15.29%) NoSQL
23 98 (15.29%) SOLID
24 93 (14.51%) Jenkins
25 90 (14.04%) React
26 87 (13.57%) Node.js
27 86 (13.42%) C++
27 86 (13.42%) Scrum

TDD
Co-occurring IT Skills in the North of England 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 39 (6.08%) Elasticsearch
2 37 (5.77%) nginx
3 14 (2.18%) CMS
4 5 (0.78%) BizTalk Server
5 4 (0.62%) Adobe Experience Manager
5 4 (0.62%) IIS
6 3 (0.47%) Confluence
6 3 (0.47%) NServiceBus
7 2 (0.31%) Apache Spark
7 2 (0.31%) Kentico
7 2 (0.31%) Tomcat
8 1 (0.16%) Apache
8 1 (0.16%) JBoss
8 1 (0.16%) Jetty
8 1 (0.16%) Moodle
8 1 (0.16%) Umbraco
8 1 (0.16%) WebLogic
8 1 (0.16%) WebSphere
Applications
1 6 (0.94%) Adobe Illustrator
2 2 (0.31%) Chatbot
3 1 (0.16%) Adobe XD
3 1 (0.16%) MS Visio
3 1 (0.16%) Photoshop
Business Applications
1 7 (1.09%) Magento
2 1 (0.16%) Payment Gateway
2 1 (0.16%) Salesforce.com CRM
2 1 (0.16%) Shopify
Cloud Services
1 146 (22.78%) AWS
2 139 (21.68%) Azure
3 47 (7.33%) GCP
4 44 (6.86%) Serverless
5 42 (6.55%) AWS CloudFormation
6 33 (5.15%) SaaS
7 20 (3.12%) AWS Lambda
8 18 (2.81%) Cloud Computing
9 10 (1.56%) PaaS
10 9 (1.40%) Amazon EC2
10 9 (1.40%) IaaS
11 8 (1.25%) NuGet
12 7 (1.09%) Amazon S3
13 4 (0.62%) Amazon ECS
13 4 (0.62%) npm
13 4 (0.62%) Slack
14 3 (0.47%) Google Play
14 3 (0.47%) iTunes
14 3 (0.47%) Virtual Private Cloud
14 3 (0.47%) Yarn
Communications & Networking
1 4 (0.62%) HTTP
2 3 (0.47%) TCP/IP
3 2 (0.31%) Software-Defined Radio
4 1 (0.16%) AMQP
4 1 (0.16%) SSH
Database & Business Intelligence
1 98 (15.29%) NoSQL
2 74 (11.54%) SQL Server
3 47 (7.33%) PostgreSQL
4 44 (6.86%) MySQL
5 41 (6.40%) Redis
6 28 (4.37%) MongoDB
7 26 (4.06%) Relational Database
8 18 (2.81%) SQL Server Integration Services
9 17 (2.65%) Big Data
10 14 (2.18%) SQL Server Analysis Services
11 11 (1.72%) Data Warehouse
12 10 (1.56%) SQL Server Reporting Services
13 5 (0.78%) Amazon DynamoDB
13 5 (0.78%) Apache Hive
13 5 (0.78%) Cosmos DB
13 5 (0.78%) Enterprise Data Warehouse
13 5 (0.78%) MariaDB
13 5 (0.78%) SQL Server 2016
14 4 (0.62%) Hadoop
15 3 (0.47%) RDBMS
Development Applications
1 131 (20.44%) Git (software)
2 93 (14.51%) Jenkins
3 43 (6.71%) Selenium
4 41 (6.40%) Subversion
5 36 (5.62%) Mercurial
6 32 (4.99%) JIRA
6 32 (4.99%) TeamCity
7 24 (3.74%) Maven
8 23 (3.59%) SoapUI
9 22 (3.43%) WebDriver
10 21 (3.28%) Visual Studio
11 20 (3.12%) Team Foundation Server
12 16 (2.50%) Cucumber
12 16 (2.50%) JUnit
13 15 (2.34%) Gradle
14 11 (1.72%) IntelliJ
14 11 (1.72%) Liquibase
14 11 (1.72%) Mockito
15 10 (1.56%) SpecFlow
16 8 (1.25%) Jasmine
General
1 76 (11.86%) Finance
2 21 (3.28%) Games
3 16 (2.50%) Public Sector
4 14 (2.18%) Marketing
5 13 (2.03%) Retail
6 7 (1.09%) Telecoms
7 4 (0.62%) Banking
8 3 (0.47%) Law
8 3 (0.47%) Local Government
9 2 (0.31%) Advertising
9 2 (0.31%) Housing Association
9 2 (0.31%) Manufacturing
10 1 (0.16%) Automotive
10 1 (0.16%) Back Office
10 1 (0.16%) Electronics
10 1 (0.16%) Pharmaceutical
Job Titles
1 381 (59.44%) Developer
2 167 (26.05%) Software Engineer
3 109 (17.00%) Senior Developer
4 105 (16.38%) .NET Developer
5 56 (8.74%) Software Developer
6 51 (7.96%) C# Developer
7 45 (7.02%) Front End Developer (Client-Side Developer)
7 45 (7.02%) Java Developer
8 40 (6.24%) C# .NET Developer
9 39 (6.08%) Senior .NET Developer
10 37 (5.77%) Python Engineer
10 37 (5.77%) Python Software Engineer
11 31 (4.84%) Angular Developer
12 29 (4.52%) Full Stack Developer
13 26 (4.06%) .NET Software Developer
14 22 (3.43%) PHP Developer
15 20 (3.12%) C# Software Developer
15 20 (3.12%) Mobile Engineer
15 20 (3.12%) Mobile Software Engineer
15 20 (3.12%) Senior Software Engineer
Libraries, Frameworks & Software Standards
1 202 (31.51%) .NET
2 173 (26.99%) AngularJS
3 136 (21.22%) HTML
4 132 (20.59%) CSS
5 104 (16.22%) .NET Core
6 90 (14.04%) React
7 87 (13.57%) Node.js
8 79 (12.32%) Vue.js
9 74 (11.54%) RESTful
10 60 (9.36%) ASP.NET
11 54 (8.42%) REST
12 53 (8.27%) .NET Framework
13 50 (7.80%) Spring
14 45 (7.02%) RabbitMQ
15 44 (6.86%) Web Services
16 36 (5.62%) ASP.NET Web API
17 35 (5.46%) jQuery
18 32 (4.99%) Spring Boot
19 31 (4.84%) Entity Framework
20 29 (4.52%) Laravel
Miscellaneous
1 45 (7.02%) User Experience
2 40 (6.24%) Greenfield Project
3 28 (4.37%) Mobile App
4 27 (4.21%) Enterprise Software
5 24 (3.74%) Algorithms
6 20 (3.12%) Data Structures
7 13 (2.03%) Blog
8 9 (1.40%) Virtual Team
9 8 (1.25%) Analytical Skills
10 7 (1.09%) Cloud Native
10 7 (1.09%) Xbox
11 6 (0.94%) e-Learning
11 6 (0.94%) Graphic Design
11 6 (0.94%) NHS
12 5 (0.78%) Management Information System
13 4 (0.62%) Self-Motivation
13 4 (0.62%) Smartphone
14 3 (0.47%) Social Media
15 2 (0.31%) Embedded Systems
15 2 (0.31%) iPhone
Operating Systems
1 34 (5.30%) Apple iOS
2 30 (4.68%) Android
3 24 (3.74%) Linux
4 15 (2.34%) Windows
5 1 (0.16%) CentOS
5 1 (0.16%) Embedded Linux
5 1 (0.16%) Red Hat Enterprise Linux
5 1 (0.16%) Ubuntu
5 1 (0.16%) Windows Server
Processes & Methodologies
1 424 (66.15%) Agile Software Development
2 213 (33.23%) Software Engineering
3 161 (25.12%) DevOps
4 151 (23.56%) BDD
5 133 (20.75%) Microservices
6 127 (19.81%) Continuous Integration
7 124 (19.34%) Test Automation
8 116 (18.10%) Unit Testing
9 102 (15.91%) OO
10 98 (15.29%) SOLID
11 86 (13.42%) Scrum
12 72 (11.23%) MVC
13 70 (10.92%) OOP
14 65 (10.14%) Pair Programming
15 62 (9.67%) Front End Development
16 59 (9.20%) Mentoring
17 57 (8.89%) Problem-Solving
18 52 (8.11%) E-Commerce
19 41 (6.40%) Continuous Delivery
20 40 (6.24%) Coaching
Programming Languages
1 311 (48.52%) JavaScript
2 282 (43.99%) C#
3 199 (31.05%) Java
4 179 (27.93%) SQL
5 143 (22.31%) Python
6 86 (13.42%) C++
7 62 (9.67%) TypeScript
8 56 (8.74%) Go
9 50 (7.80%) Ruby
10 48 (7.49%) PHP
11 44 (6.86%) Kotlin
12 43 (6.71%) Scala
13 27 (4.21%) Apple Swift
14 25 (3.90%) Java 8
14 25 (3.90%) Objective-C
15 23 (3.59%) ES6
16 17 (2.65%) T-SQL
17 8 (1.25%) PowerShell
18 7 (1.09%) PHP 7
19 6 (0.94%) Groovy
Qualifications
1 24 (3.74%) Degree
2 20 (3.12%) PhD
3 10 (1.56%) Security Cleared
4 7 (1.09%) AWS Certification
4 7 (1.09%) ISTQB
4 7 (1.09%) SC Cleared
5 4 (0.62%) Computer Science Degree
5 4 (0.62%) ISEB
6 2 (0.31%) DV Cleared
6 2 (0.31%) Numerate Degree
7 1 (0.16%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 37 (5.77%) QA
2 8 (1.25%) ISO/IEC 27001
3 4 (0.62%) GDPR
3 4 (0.62%) ISO 9001
3 4 (0.62%) WCAG
4 1 (0.16%) Data Quality
System Software
1 136 (21.22%) Docker
Systems Management
1 81 (12.64%) Kubernetes
2 56 (8.74%) Terraform
3 38 (5.93%) Ansible
4 7 (1.09%) Opscode Chef
5 6 (0.94%) Packer
6 1 (0.16%) Cobbler
6 1 (0.16%) Grafana
6 1 (0.16%) Prometheus
6 1 (0.16%) Puppet
6 1 (0.16%) Rundeck
Vendors
1 59 (9.20%) Microsoft
2 15 (2.34%) Adobe
3 14 (2.18%) Google
4 8 (1.25%) Apple
4 8 (1.25%) Zend
5 5 (0.78%) Aquila
5 5 (0.78%) MKS
6 3 (0.47%) Mapbox
6 3 (0.47%) Oracle
6 3 (0.47%) Salesforce.com
7 2 (0.31%) SAP
8 1 (0.16%) Atlassian
8 1 (0.16%) IBM
8 1 (0.16%) Progress
8 1 (0.16%) Rackspace
8 1 (0.16%) TIBCO