Period
to 23 September 2021

The following table provides summary statistics for permanent job vacancies with a requirement for Clean Code skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Clean Code over the 6 months to 23 September 2021 with a comparison to the same period in the previous 2 years.

Clean Code
UK
6 months to
23 Sep 2021
Same period 2020 Same period 2019
Rank 185 253 293
Rank change year-on-year +68 +40 +17
Permanent jobs citing Clean Code 2,415 642 1,631
As % of all permanent jobs advertised in the UK 1.97% 1.30% 1.16%
As % of the Processes & Methodologies category 2.10% 1.39% 1.26%
Number of salaries quoted 1,050 570 1,365
10th Percentile £35,000 £34,875 £33,750
25th Percentile £42,500 £42,500 £41,250
Median annual salary (50th Percentile) £60,000 £60,000 £55,000
Median % change year-on-year - +9.09% +10.00%
75th Percentile £77,500 £77,500 £73,750
90th Percentile £95,000 £90,000 £85,000
UK excluding London median annual salary £47,500 £47,500 £47,500

Clean Code 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 requirement for process or methodology skills.

All Process and Methodology Skills
UK
Permanent vacancies with a requirement for process or methodology skills 115,033 46,115 129,729
As % of all permanent IT jobs advertised in the UK 93.97% 93.20% 92.62%
Number of salaries quoted 76,915 38,053 103,181
10th Percentile £32,500 £33,000 £30,000
25th Percentile £42,500 £42,500 £37,500
Median annual salary (50th Percentile) £57,500 £55,000 £52,500
Median % change year-on-year +4.55% +4.76% +5.00%
75th Percentile £76,250 £73,750 £70,000
90th Percentile £93,750 £91,250 £86,250
UK excluding London median annual salary £50,000 £50,000 £45,000
% change year-on-year - +11.11% -

Clean Code
Job Vacancy Trend

Job postings citing Clean Code as a proportion of all IT jobs advertised.

Job vacancy trend for Clean Code in the UK

Clean Code
Salary Trend

3-month moving average salary quoted in jobs citing Clean Code.

Salary trend for Clean Code in the UK

Clean Code
Salary Histogram

Salary distribution for jobs citing Clean Code over the 6 months to 23 September 2021.

Salary histogram for Clean Code in the UK

Clean Code
Top 17 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Clean Code within the UK over the 6 months to 23 September 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
England +78 2,228 £62,500 +4.17% 287
London +105 1,397 £75,000 +3.45% 151
UK excluding London +26 890 £47,500 - 161
Work from Home -53 509 £57,500 -4.17% 87
South East +49 364 £55,000 - 23
North of England -38 207 £47,500 +5.56% 63
North West -24 115 £47,500 +5.56% 34
Midlands -63 113 £40,750 +1.88% 26
West Midlands -55 82 £42,750 -13.20% 17
South West -68 69 £55,000 +41.03% 17
Scotland -42 65 £50,000 +11.11% 22
Yorkshire -77 52 £45,000 -5.26% 16
East of England -74 48 £47,500 -2.56% 6
North East -7 40 £34,750 -8.55% 13
East Midlands -56 32 £37,500 - 9
Northern Ireland -34 16 £30,000 - 1
Wales -44 8 £50,000 +11.11% 3

For the 6 months to 23 September 2021, IT jobs citing Clean Code 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 with a requirement for Clean Code.

1 1,281 (53.04%) Agile Software Development
2 1,032 (42.73%) JavaScript
3 893 (36.98%) Software Engineering
4 776 (32.13%) React
5 749 (31.01%) AWS
6 706 (29.23%) CSS
7 705 (29.19%) Finance
8 649 (26.87%) C#
9 619 (25.63%) .NET
10 611 (25.30%) Docker
11 609 (25.22%) Microservices
12 604 (25.01%) Python
13 600 (24.84%) Git (software)
14 593 (24.55%) Azure
15 591 (24.47%) TDD
16 574 (23.77%) Java
17 569 (23.56%) SQL
18 550 (22.77%) HTML
19 548 (22.69%) Full Stack Development
20 521 (21.57%) DevOps
21 520 (21.53%) Node.js
22 511 (21.16%) User Experience
23 453 (18.76%) OO
23 453 (18.76%) RESTful
24 443 (18.34%) AngularJS
24 443 (18.34%) Social Skills
25 441 (18.26%) TypeScript
26 406 (16.81%) Test Automation
27 405 (16.77%) Computer Science
28 404 (16.73%) PostgreSQL

Clean Code
Co-occurring IT Skills 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
1 149 (6.17%) Apache
2 140 (5.80%) Apache Spark
3 129 (5.34%) GemFire
4 127 (5.26%) CMS
5 115 (4.76%) Elasticsearch
6 39 (1.61%) Apache Airflow
7 33 (1.37%) WordPress
8 31 (1.28%) Umbraco
9 28 (1.16%) Confluence
10 26 (1.08%) Sitecore CMS
11 23 (0.95%) Gunicorn
11 23 (0.95%) nginx
12 20 (0.83%) Kentico
13 19 (0.79%) EPiServer
14 18 (0.75%) IIS
15 14 (0.58%) Drupal
15 14 (0.58%) IBM Domino
16 13 (0.54%) Headless CMS
17 10 (0.41%) MediaWiki
18 8 (0.33%) Tomcat
Applications
1 26 (1.08%) Microsoft Office
2 19 (0.79%) Adobe XD
3 18 (0.75%) Photoshop
4 14 (0.58%) Adobe Illustrator
5 11 (0.46%) Figma
6 10 (0.41%) Microsoft Excel
7 7 (0.29%) Spreadsheet
8 5 (0.21%) Adobe Creative Suite
9 4 (0.17%) Sketch
10 2 (0.083%) Chatbot
11 1 (0.041%) Fireworks
11 1 (0.041%) Zeplin
Business Applications
1 28 (1.16%) Payment Gateway
2 25 (1.04%) Shopify
3 8 (0.33%) Magento
4 5 (0.21%) SDL Web 8
5 4 (0.17%) Summit
6 3 (0.12%) Sentinel
7 2 (0.083%) Academy Revenues and Benefits
Cloud Services
1 749 (31.01%) AWS
2 593 (24.55%) Azure
3 300 (12.42%) GCP
4 276 (11.43%) GitHub
5 235 (9.73%) Serverless
6 156 (6.46%) SaaS
7 149 (6.17%) Amazon Kinesis
8 133 (5.51%) AWS Lambda
9 89 (3.69%) Amazon S3
10 75 (3.11%) Heroku
11 59 (2.44%) NuGet
12 54 (2.24%) AWS Step Functions
13 51 (2.11%) Amazon EC2
13 51 (2.11%) OpenShift
14 47 (1.95%) Azure Service Bus
15 45 (1.86%) Azure Functions
16 33 (1.37%) npm
17 31 (1.28%) Cloud Computing
18 24 (0.99%) Amazon CloudWatch
18 24 (0.99%) Firebase
Communications & Networking
1 167 (6.92%) HTTP
2 46 (1.90%) Broadband
3 44 (1.82%) Internet
4 19 (0.79%) SMTP
4 19 (0.79%) SSH
5 12 (0.50%) DNS
5 12 (0.50%) FTP
6 9 (0.37%) RIP
7 8 (0.33%) Asterisk PBX
7 8 (0.33%) VoIP
8 4 (0.17%) Bluetooth
8 4 (0.17%) MQTT
9 3 (0.12%) AMQP
9 3 (0.12%) NFC
9 3 (0.12%) PPP
9 3 (0.12%) TCP/IP
10 1 (0.041%) HTTPS
10 1 (0.041%) Intranet
10 1 (0.041%) VPN
10 1 (0.041%) Wireless
Database & Business Intelligence
1 404 (16.73%) PostgreSQL
2 399 (16.52%) NoSQL
3 329 (13.62%) Relational Database
4 267 (11.06%) MySQL
4 267 (11.06%) Redis
5 228 (9.44%) SQL Server
6 136 (5.63%) Big Data
6 136 (5.63%) MariaDB
7 128 (5.30%) MongoDB
8 126 (5.22%) HBase
9 83 (3.44%) Amazon DynamoDB
10 48 (1.99%) Azure SQL Database
11 35 (1.45%) Data Warehouse
12 27 (1.12%) Apache Cassandra
12 27 (1.12%) Couchbase
12 27 (1.12%) Kalido
13 26 (1.08%) Amazon RDS
13 26 (1.08%) RDBMS
14 21 (0.87%) Hadoop
15 20 (0.83%) Blockchain
Development Applications
1 600 (24.84%) Git (software)
2 254 (10.52%) Jenkins
3 168 (6.96%) Gradle
4 163 (6.75%) Cucumber
5 151 (6.25%) Cypress.io
6 147 (6.09%) Artifactory
7 137 (5.67%) Storybook
8 134 (5.55%) JUnit
9 133 (5.51%) Protractor
10 129 (5.34%) IntelliJ
10 129 (5.34%) Sonatype Nexus
11 127 (5.26%) Eclipse
12 126 (5.22%) Mockito
13 118 (4.89%) JIRA
14 93 (3.85%) TeamCity
15 77 (3.19%) Octopus Deploy
16 72 (2.98%) GitLab
17 67 (2.77%) webpack
18 59 (2.44%) SonarQube
19 57 (2.36%) CircleCI
General
1 705 (29.19%) Finance
2 443 (18.34%) Social Skills
3 354 (14.66%) Banking
4 228 (9.44%) Retail
5 179 (7.41%) Inclusion and Diversity
6 169 (7.00%) Marketing
7 153 (6.34%) Law
8 146 (6.05%) Analytical Skills
9 89 (3.69%) Games
10 47 (1.95%) Retail Banking
11 43 (1.78%) Manufacturing
12 40 (1.66%) Organisational Skills
13 33 (1.37%) Automotive
14 29 (1.20%) Advertising
14 29 (1.20%) Telecoms
15 26 (1.08%) Public Sector
16 21 (0.87%) Presentation Skills
16 21 (0.87%) Wearables
17 20 (0.83%) Publishing
18 16 (0.66%) Electronics
Job Titles
1 1,350 (55.90%) Developer
2 557 (23.06%) Software Engineer
3 276 (11.43%) Senior Developer
4 219 (9.07%) Software Developer
5 210 (8.70%) Front End Developer (Client-Side Developer)
6 179 (7.41%) Full Stack Developer
7 176 (7.29%) Senior Software Engineer
8 148 (6.13%) Backend Developer
9 136 (5.63%) C# Developer
10 132 (5.47%) .NET Developer
11 111 (4.60%) PHP Developer
12 98 (4.06%) Lead Developer
13 94 (3.89%) React Developer
14 90 (3.73%) Java Developer
15 88 (3.64%) Principal Engineer
16 87 (3.60%) Principal Software Engineer
17 74 (3.06%) C# .NET Developer
18 69 (2.86%) Java Engineer
19 62 (2.57%) JavaScript Developer
20 54 (2.24%) Mobile Developer
Libraries, Frameworks & Software Standards
1 776 (32.13%) React
2 706 (29.23%) CSS
3 619 (25.63%) .NET
4 550 (22.77%) HTML
5 520 (21.53%) Node.js
6 453 (18.76%) RESTful
7 443 (18.34%) AngularJS
8 380 (15.73%) REST
9 322 (13.33%) .NET Core
10 306 (12.67%) Kafka
11 243 (10.06%) Spring
12 233 (9.65%) RabbitMQ
13 214 (8.86%) Redux
14 200 (8.28%) JSON
15 185 (7.66%) Web Services
16 175 (7.25%) HTML5
17 173 (7.16%) Express
17 173 (7.16%) GraphQL
18 165 (6.83%) ASP.NET
19 160 (6.63%) Vue.js
Miscellaneous
1 511 (21.16%) User Experience
2 174 (7.20%) Mobile App
3 157 (6.50%) Algorithms
4 141 (5.84%) Self-Motivation
5 127 (5.26%) Linux Command Line
6 122 (5.05%) Data Structures
7 105 (4.35%) Greenfield Project
8 84 (3.48%) Virtual Team
9 78 (3.23%) Cloud Native
10 62 (2.57%) Social Media
11 56 (2.32%) Legacy Systems
12 43 (1.78%) Hedge funds
13 41 (1.70%) Enterprise Software
13 41 (1.70%) Legacy Code
14 38 (1.57%) Video\Live Streaming
15 33 (1.37%) Foreign Exchange (FX)
15 33 (1.37%) Legacy Applications
16 28 (1.16%) Client/Server
17 25 (1.04%) NHS
18 24 (0.99%) Robotics
Operating Systems
1 308 (12.75%) Linux
2 162 (6.71%) Unix
3 134 (5.55%) Apple iOS
4 129 (5.34%) Android
5 70 (2.90%) Windows
6 13 (0.54%) Windows 10
6 13 (0.54%) Windows 7
6 13 (0.54%) Windows Server 2012
7 11 (0.46%) CentOS
8 10 (0.41%) Ubuntu
9 8 (0.33%) Mac OS
10 6 (0.25%) Fedora
10 6 (0.25%) Red Hat Enterprise Linux
11 4 (0.17%) Debian
Processes & Methodologies
1 1,281 (53.04%) Agile Software Development
2 893 (36.98%) Software Engineering
3 609 (25.22%) Microservices
4 591 (24.47%) TDD
5 548 (22.69%) Full Stack Development
6 521 (21.57%) DevOps
7 453 (18.76%) OO
8 406 (16.81%) Test Automation
9 405 (16.77%) Computer Science
10 368 (15.24%) Fintech
11 345 (14.29%) Continuous Integration
12 339 (14.04%) Problem-Solving
13 330 (13.66%) Scrum
14 296 (12.26%) SDLC
15 277 (11.47%) Software Testing
16 273 (11.30%) Front End Development
16 273 (11.30%) OOP
17 269 (11.14%) SOLID
18 242 (10.02%) Mentoring
19 223 (9.23%) BDD
Programming Languages
1 1,032 (42.73%) JavaScript
2 649 (26.87%) C#
3 604 (25.01%) Python
4 574 (23.77%) Java
5 569 (23.56%) SQL
6 441 (18.26%) TypeScript
7 265 (10.97%) PHP
8 129 (5.34%) Kotlin
9 126 (5.22%) Shell Script
10 125 (5.18%) Groovy
11 109 (4.51%) Ruby
12 99 (4.10%) Go
13 98 (4.06%) C++
14 94 (3.89%) C
15 71 (2.94%) T-SQL
16 55 (2.28%) Apple Swift
17 53 (2.19%) Scala
18 44 (1.82%) Java 8
19 38 (1.57%) PHP 7
19 38 (1.57%) PowerShell
Qualifications
1 376 (15.57%) Degree
2 126 (5.22%) OCP
2 126 (5.22%) Oracle Certification
3 114 (4.72%) Computer Science Degree
4 45 (1.86%) AWS Certification
5 16 (0.66%) PhD
6 15 (0.62%) MBA
7 11 (0.46%) DBS Check
8 9 (0.37%) Master's Degree
8 9 (0.37%) Security Cleared
9 6 (0.25%) DV Cleared
9 6 (0.25%) Microsoft Certification
9 6 (0.25%) Numerate Degree
10 3 (0.12%) SC Cleared
11 1 (0.041%) ISTQB
11 1 (0.041%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 222 (9.19%) QA
2 34 (1.41%) Accessibility
3 32 (1.33%) GDPR
4 23 (0.95%) GRC
5 10 (0.41%) WCAG
6 8 (0.33%) Data Quality
7 1 (0.041%) ISO/IEC 27001
7 1 (0.041%) SOC 2
7 1 (0.041%) WAI
System Software
1 611 (25.30%) Docker
2 124 (5.13%) HDFS
3 97 (4.02%) VMware Infrastructure
4 4 (0.17%) Firmware
4 4 (0.17%) Varnish
5 3 (0.12%) Active Directory
Systems Management
1 394 (16.31%) Kubernetes
2 167 (6.92%) Terraform
3 166 (6.87%) Ansible
4 36 (1.49%) Opscode Chef
5 22 (0.91%) Prometheus
6 19 (0.79%) Grafana
7 18 (0.75%) Puppet
8 14 (0.58%) Kibana
9 8 (0.33%) Argo
9 8 (0.33%) Docker Swarm
10 6 (0.25%) Istio
11 5 (0.21%) Consul
12 4 (0.17%) Capistrano
12 4 (0.17%) logstash
13 1 (0.041%) MIIS
13 1 (0.041%) ZABBIX
Vendors
1 300 (12.42%) Microsoft
2 138 (5.71%) Okta
3 136 (5.63%) VMware
4 126 (5.22%) Google
5 120 (4.97%) Samsung
6 57 (2.36%) Oracle
7 36 (1.49%) Adobe
8 27 (1.12%) Alibaba
9 26 (1.08%) Sitecore
10 24 (0.99%) Apple
10 24 (0.99%) Optimizely
10 24 (0.99%) Yahoo!
10 24 (0.99%) Zend
11 23 (0.95%) New Relic
12 20 (0.83%) Spotify
13 18 (0.75%) Bloomberg
14 17 (0.70%) ANSYS
15 16 (0.66%) Atlassian
16 15 (0.62%) Xamarin
17 14 (0.58%) Salesforce.com