Job Vacancy Trend Salary Trend Salary Histogram Skill Sets
Period
to 27 July 2021

The table below provides summary statistics for permanent job vacancies with an option to work from home (WFH) and 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 27 July 2021 with a comparison to the same period in the previous 2 years.

Test-Driven Development (TDD)
UK > Work from Home
6 months to
27 Jul 2021		 Same period 2020 Same period 2019
Rank 39 21 34
Rank change year-on-year -18 +13 -15
Permanent jobs citing TDD 1,503 545 573
As % of all permanent jobs with a WFH option 6.60% 10.05% 7.03%
As % of the Processes & Methodologies category 7.05% 10.85% 7.53%
Number of salaries quoted 1,080 512 538
10th Percentile £38,750 £37,500 £35,000
25th Percentile £46,625 £43,750 £43,750
Median annual salary (50th Percentile) £60,000 £60,000 £56,500
Median % change year-on-year - +6.19% +18.95%
75th Percentile £77,500 £77,500 £75,000
90th Percentile £86,375 £93,750 £86,250
UK median annual salary £60,000 £60,000 £55,000
% change year-on-year - +9.09% +4.76%

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 with a WFH option and a requirement for process or methodology skills.

All Process and Methodology Skills
Work from Home
Permanent vacancies with a requirement for process or methodology skills 21,326 5,022 7,606
As % of all permanent jobs with a WFH option 93.66% 92.64% 93.29%
Number of salaries quoted 16,961 4,327 6,597
10th Percentile £35,750 £35,750 £35,000
25th Percentile £43,750 £42,500 £42,500
Median annual salary (50th Percentile) £57,500 £57,500 £57,500
75th Percentile £75,000 £73,750 £75,000
90th Percentile £91,250 £85,000 £87,500
UK median annual salary £55,000 £55,000 £52,500
% change year-on-year - +4.76% +5.00%

TDD
Trend for Jobs with a WFH Option

Job vacancies with a work from home option citing TDD as a proportion of all IT jobs advertised.

TDD trend for jobs with a WFH option

TDD
Salary Trend for Jobs with a WFH Option

3-month moving average salary quoted in job vacancies with a work from home option citing TDD.

TDD salary trend for jobs with a WFH option

TDD
Salary Histogram for Jobs with a WFH Option

Salary distribution for jobs with a work from home option citing TDD over the 6 months to 27 July 2021.

TDD salary histogram for jobs with a WFH option

For the 6 months to 27 July 2021, TDD job roles required the following IT skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent jobs with a WFH option and a requirement for TDD.

1 1,065 (70.86%) Agile Software Development
2 626 (41.65%) JavaScript
3 557 (37.06%) BDD
4 531 (35.33%) Microservices
5 515 (34.26%) React
6 485 (32.27%) Java
7 484 (32.20%) Scrum
8 462 (30.74%) AWS
9 448 (29.81%) C#
10 439 (29.21%) Azure
11 416 (27.68%) Software Engineering
12 393 (26.15%) DevOps
13 376 (25.02%) .NET
14 370 (24.62%) SQL
15 369 (24.55%) Test Automation
16 305 (20.29%) Docker
17 297 (19.76%) HTML
18 271 (18.03%) CSS
19 267 (17.76%) Git (software)
20 265 (17.63%) Continuous Integration
21 264 (17.56%) Social Skills
22 252 (16.77%) Finance
23 249 (16.57%) RESTful
24 246 (16.37%) AngularJS
25 243 (16.17%) REST
26 230 (15.30%) Front End Development
27 225 (14.97%) Node.js
28 223 (14.84%) MVC
29 221 (14.70%) TypeScript
30 215 (14.30%) Python

TDD
Co-occurring IT Skills with a WFH Option 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 53 (3.53%) Elasticsearch
2 51 (3.39%) Confluence
3 39 (2.59%) CMS
4 31 (2.06%) Tomcat
5 25 (1.66%) Apache Spark
6 21 (1.40%) SharePoint
7 18 (1.20%) nginx
8 17 (1.13%) Apache
9 15 (1.00%) Umbraco
10 14 (0.93%) Apache Solr
11 13 (0.86%) Drupal
11 13 (0.86%) EPiServer
12 11 (0.73%) WordPress
13 9 (0.60%) Mule
14 8 (0.53%) JBoss
14 8 (0.53%) Mule ESB
14 8 (0.53%) Red Hat Fuse
15 7 (0.47%) OpenStack
16 6 (0.40%) Apache Airflow
16 6 (0.40%) Oracle Spatial
Applications
1 20 (1.33%) Microsoft Office
2 7 (0.47%) Sketch
3 5 (0.33%) Chatbot
4 4 (0.27%) EngageOne
4 4 (0.27%) Zeplin
5 3 (0.20%) Adobe Creative Suite
5 3 (0.20%) InVision
6 2 (0.13%) Figma
7 1 (0.067%) Adobe XD
7 1 (0.067%) Photoshop
Business Applications
1 24 (1.60%) Dynamics CRM
2 19 (1.26%) Payment Gateway
3 7 (0.47%) Oracle BPM
4 3 (0.20%) NetSuite
5 1 (0.067%) Magento
5 1 (0.067%) SDL Web 8
5 1 (0.067%) Shopify
Cloud Services
1 462 (30.74%) AWS
2 439 (29.21%) Azure
3 140 (9.31%) GCP
4 102 (6.79%) SaaS
5 99 (6.59%) Serverless
6 53 (3.53%) AWS Lambda
7 46 (3.06%) GitHub
8 28 (1.86%) Amazon EC2
9 26 (1.73%) Cloud Functions
10 22 (1.46%) Amazon S3
10 22 (1.46%) Amazon SQS
11 21 (1.40%) Azure Functions
11 21 (1.40%) Cloud Computing
12 17 (1.13%) Azure Service Bus
12 17 (1.13%) PaaS
13 16 (1.06%) Azure Logic Apps
13 16 (1.06%) Power Platform
14 15 (1.00%) AWS CloudFormation
15 14 (0.93%) npm
16 13 (0.86%) Dynamics 365
Communications & Networking
1 25 (1.66%) HTTP
2 17 (1.13%) Internet
3 6 (0.40%) TCP/IP
4 3 (0.20%) DLNA
4 3 (0.20%) Skype
4 3 (0.20%) Software-Defined Radio
4 3 (0.20%) UPnP
4 3 (0.20%) Wi-Fi
4 3 (0.20%) Wireless
5 2 (0.13%) AMQP
5 2 (0.13%) DNS
Database & Business Intelligence
1 215 (14.30%) NoSQL
2 161 (10.71%) SQL Server
3 109 (7.25%) MongoDB
4 105 (6.99%) MySQL
5 98 (6.52%) PostgreSQL
6 69 (4.59%) Relational Database
7 52 (3.46%) Hadoop
8 49 (3.26%) Big Data
9 47 (3.13%) Amazon DynamoDB
10 25 (1.66%) Redis
11 22 (1.46%) Amazon RDS
12 19 (1.26%) Amazon Aurora
13 15 (1.00%) Apache Cassandra
14 14 (0.93%) Data Lake
15 13 (0.86%) Blockchain
16 12 (0.80%) Hazelcast
16 12 (0.80%) RDBMS
17 11 (0.73%) Azure SQL Database
17 11 (0.73%) Oracle Database
18 10 (0.67%) Power BI
Development Applications
1 267 (17.76%) Git (software)
2 125 (8.32%) Jenkins
3 107 (7.12%) JIRA
4 91 (6.05%) Selenium
5 79 (5.26%) Cucumber
6 75 (4.99%) GitLab
7 58 (3.86%) Maven
8 56 (3.73%) Visual Studio
9 53 (3.53%) Cypress.io
10 42 (2.79%) NUnit
11 39 (2.59%) webpack
12 38 (2.53%) JUnit
13 35 (2.33%) Postman
14 33 (2.20%) SpecFlow
14 33 (2.20%) WebDriver
15 32 (2.13%) JMeter
16 27 (1.80%) PHPUnit
16 27 (1.80%) Subversion
17 22 (1.46%) git-flow
18 20 (1.33%) CircleCI
General
1 264 (17.56%) Social Skills
2 252 (16.77%) Finance
3 102 (6.79%) Retail
4 91 (6.05%) Analytical Skills
5 83 (5.52%) Games
6 75 (4.99%) Banking
7 69 (4.59%) Public Sector
8 65 (4.32%) Marketing
9 39 (2.59%) Legal
10 31 (2.06%) Electronics
11 22 (1.46%) Organisational Skills
12 21 (1.40%) Back Office
13 20 (1.33%) Telecoms
14 19 (1.26%) Law
14 19 (1.26%) Publishing
15 16 (1.06%) Billing
16 15 (1.00%) Inclusion and Diversity
17 14 (0.93%) Manufacturing
18 10 (0.67%) Presentation Skills
19 9 (0.60%) Automotive
Job Titles
1 920 (61.21%) Developer
2 217 (14.44%) Software Engineer
3 191 (12.71%) Senior Developer
4 181 (12.04%) Java Developer
5 164 (10.91%) Full Stack Developer
6 159 (10.58%) .NET Developer
7 138 (9.18%) React Developer
8 136 (9.05%) Software Developer
9 113 (7.52%) C# Developer
9 113 (7.52%) PHP Developer
10 97 (6.45%) Front End Developer (Client-Side Developer)
11 85 (5.66%) Java Engineer
12 83 (5.52%) C# .NET Developer
13 69 (4.59%) Lead Developer
14 65 (4.32%) Senior Software Engineer
15 47 (3.13%) Java Software Engineer
16 45 (2.99%) .NET Software Developer
17 42 (2.79%) C# Software Developer
17 42 (2.79%) Senior .NET Developer
18 40 (2.66%) Senior Java Engineer
Libraries, Frameworks & Software Standards
1 515 (34.26%) React
2 376 (25.02%) .NET
3 297 (19.76%) HTML
4 271 (18.03%) CSS
5 249 (16.57%) RESTful
6 246 (16.37%) AngularJS
7 243 (16.17%) REST
8 225 (14.97%) Node.js
9 203 (13.51%) .NET Core
10 188 (12.51%) Spring
11 187 (12.44%) Web Services
12 132 (8.78%) Kafka
13 117 (7.78%) ASP.NET
14 114 (7.58%) GraphQL
15 109 (7.25%) Vue.js
16 107 (7.12%) Spring Boot
17 96 (6.39%) HTML5
18 91 (6.05%) Redux
19 90 (5.99%) .NET Framework
20 78 (5.19%) ASP.NET MVC
Miscellaneous
1 115 (7.65%) User Experience
2 100 (6.65%) Self-Motivation
3 98 (6.52%) Greenfield Project
4 88 (5.85%) Virtual Team
5 79 (5.26%) Mobile App
6 59 (3.93%) Algorithms
7 53 (3.53%) Data Structures
8 36 (2.40%) Legacy Systems
9 33 (2.20%) iPad
10 30 (2.00%) LIMS
11 27 (1.80%) Enterprise Software
12 21 (1.40%) Legacy Code
13 20 (1.33%) Management Information System
14 19 (1.26%) NHS
15 17 (1.13%) Video\Live Streaming
16 15 (1.00%) Credit Risk
17 14 (0.93%) Cloud Native
18 13 (0.86%) Legacy Applications
19 12 (0.80%) Hybrid Cloud
20 11 (0.73%) Wiki
Operating Systems
1 157 (10.45%) Linux
2 52 (3.46%) Unix
3 48 (3.19%) Android
4 43 (2.86%) Apple iOS
5 26 (1.73%) Windows
6 11 (0.73%) Embedded Linux
7 8 (0.53%) Mac OS X
8 7 (0.47%) SUSE
8 7 (0.47%) Ubuntu
9 4 (0.27%) CentOS
10 3 (0.20%) Mac OS
Processes & Methodologies
1 1,065 (70.86%) Agile Software Development
2 557 (37.06%) BDD
3 531 (35.33%) Microservices
4 484 (32.20%) Scrum
5 416 (27.68%) Software Engineering
6 393 (26.15%) DevOps
7 369 (24.55%) Test Automation
8 265 (17.63%) Continuous Integration
9 230 (15.30%) Front End Development
10 223 (14.84%) MVC
11 202 (13.44%) SOLID
12 201 (13.37%) Mentoring
13 159 (10.58%) Fintech
14 151 (10.05%) Problem-Solving
15 141 (9.38%) SDLC
16 135 (8.98%) Kanban
17 133 (8.85%) Pair Programming
18 128 (8.52%) E-Commerce
19 126 (8.38%) Computer Science
20 125 (8.32%) Unit Testing
Programming Languages
1 626 (41.65%) JavaScript
2 485 (32.27%) Java
3 448 (29.81%) C#
4 370 (24.62%) SQL
5 221 (14.70%) TypeScript
6 215 (14.30%) Python
7 164 (10.91%) PHP
8 111 (7.39%) Kotlin
9 96 (6.39%) Java 8
10 89 (5.92%) Scala
11 62 (4.13%) Ruby
12 55 (3.66%) C++
13 48 (3.19%) Java 11
14 43 (2.86%) ES6
15 36 (2.40%) Go
16 35 (2.33%) C
17 31 (2.06%) T-SQL
18 23 (1.53%) PHP 7
19 21 (1.40%) VB
20 19 (1.26%) Groovy
Qualifications
1 122 (8.12%) Degree
2 62 (4.13%) Computer Science Degree
3 23 (1.53%) BPSS Clearance
4 20 (1.33%) Security Cleared
5 16 (1.06%) SC Cleared
6 14 (0.93%) ISEB
7 7 (0.47%) Master's Degree
8 5 (0.33%) ISTQB
9 2 (0.13%) Numerate Degree
10 1 (0.067%) AWS Certification
10 1 (0.067%) CBAP
10 1 (0.067%) CITP
10 1 (0.067%) IIBA
10 1 (0.067%) PMI Certification
Quality Assurance & Compliance
1 138 (9.18%) QA
2 73 (4.86%) Accessibility
3 23 (1.53%) GDPR
4 9 (0.60%) WCAG
5 3 (0.20%) ISO 20022
5 3 (0.20%) SLA
6 2 (0.13%) Data Quality
7 1 (0.067%) ISO 9001
7 1 (0.067%) ISO/IEC 27001
7 1 (0.067%) PCI DSS
7 1 (0.067%) PSD2
System Software
1 305 (20.29%) Docker
2 8 (0.53%) Firmware
3 5 (0.33%) vSphere
4 4 (0.27%) Apache ZooKeeper
5 3 (0.20%) Virtual Machines
6 1 (0.067%) Varnish
Systems Management
1 215 (14.30%) Kubernetes
2 64 (4.26%) Terraform
3 21 (1.40%) Ansible
4 9 (0.60%) Prometheus
4 9 (0.60%) Single Sign-On
5 7 (0.47%) Kibana
5 7 (0.47%) Puppet
5 7 (0.47%) Rancher
6 6 (0.40%) Grafana
6 6 (0.40%) Opscode Chef
7 5 (0.33%) Docker Swarm
7 5 (0.33%) Istio
8 2 (0.13%) Hadoop YARN
8 2 (0.13%) HP Fortify
8 2 (0.13%) logstash
8 2 (0.13%) ZABBIX
9 1 (0.067%) Control-M
9 1 (0.067%) Nagios
9 1 (0.067%) Oozie
Vendors
1 134 (8.92%) Microsoft
2 65 (4.32%) Google
3 59 (3.93%) Oracle
4 29 (1.93%) Atlassian
5 27 (1.80%) IBM
6 25 (1.66%) Mercator
7 16 (1.06%) SAP
8 13 (0.86%) Pega
9 9 (0.60%) Databricks
9 9 (0.60%) WooCommerce
10 7 (0.47%) AppDynamics
10 7 (0.47%) Splunk
10 7 (0.47%) Xamarin
11 6 (0.40%) ESRI
11 6 (0.40%) MuleSoft
12 5 (0.33%) Adobe
12 5 (0.33%) ServiceNow
13 4 (0.27%) OpenText
13 4 (0.27%) Sitecore
14 3 (0.20%) Dell