Period
to 21 September 2021

The following table provides summary statistics for permanent job vacancies advertised in London 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 21 September 2021 with a comparison to the same period in the previous 2 years.

Clean Code
England > London
6 months to
21 Sep 2021
Same period 2020 Same period 2019
Rank 121 233 242
Rank change year-on-year +112 +9 +49
Permanent jobs citing Clean Code 1,410 300 783
As % of all permanent jobs advertised in London 2.87% 1.47% 1.41%
As % of the Processes & Methodologies category 3.01% 1.56% 1.51%
Number of salaries quoted 447 271 659
10th Percentile £48,750 £48,750 £43,750
25th Percentile £58,750 £55,000 £52,500
Median annual salary (50th Percentile) £75,000 £72,500 £67,500
Median % change year-on-year +3.45% +7.41% +8.00%
75th Percentile £95,000 £85,000 £85,000
90th Percentile £110,000 £107,500 £91,500
England median annual salary £62,500 £60,000 £56,000
% change year-on-year +4.17% +7.14% +12.00%

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 advertised in London with a requirement for process or methodology skills.

All Process and Methodology Skills
London
Permanent vacancies with a requirement for process or methodology skills 46,854 19,173 51,912
As % of all permanent IT jobs advertised in London 95.44% 94.08% 93.51%
Number of salaries quoted 30,500 16,003 42,259
10th Percentile £42,500 £42,500 £36,250
25th Percentile £52,500 £52,500 £47,500
Median annual salary (50th Percentile) £70,000 £70,000 £65,000
Median % change year-on-year - +7.69% +4.00%
75th Percentile £88,750 £87,500 £82,500
90th Percentile £105,000 £109,900 £100,000
England median annual salary £57,500 £57,000 £52,500
% change year-on-year +0.88% +8.57% +3.14%

Clean Code
Job Vacancy Trend in London

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

Job vacancy trend for Clean Code in London

Clean Code
Salary Trend in London

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

Salary trend for Clean Code in London

Clean Code
Salary Histogram in London

Salary distribution for jobs citing Clean Code in London over the 6 months to 21 September 2021.

Salary histogram for Clean Code in London

Clean Code
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Clean Code within the London region over the 6 months to 21 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
Central London -37 119 £67,500 -6.90% 48
West London +20 107 £70,000 -9.68% 19
South London -28 1 - - 2
Clean Code
England

For the 6 months to 21 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 across the London region with a requirement for Clean Code.

1 690 (48.94%) Agile Software Development
2 625 (44.33%) JavaScript
3 503 (35.67%) Software Engineering
4 497 (35.25%) Finance
5 493 (34.96%) Docker
6 455 (32.27%) AWS
7 424 (30.07%) React
8 392 (27.80%) Python
9 372 (26.38%) SQL
10 337 (23.90%) Microservices
11 336 (23.83%) TDD
12 330 (23.40%) TypeScript
13 316 (22.41%) User Experience
13 316 (22.41%) Fintech
14 313 (22.20%) CSS
15 300 (21.28%) Java
15 300 (21.28%) .NET
16 293 (20.78%) REST
16 293 (20.78%) Kubernetes
17 292 (20.71%) Social Skills
18 288 (20.43%) C#
19 286 (20.28%) Full Stack Development
20 269 (19.08%) HTML
20 269 (19.08%) Node.js
21 267 (18.94%) Test Automation
22 259 (18.37%) Azure
23 251 (17.80%) PostgreSQL
24 247 (17.52%) RESTful
25 245 (17.38%) Continuous Integration
26 242 (17.16%) SDLC

Clean Code
Co-occurring IT Skills in London 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 68 (4.82%) CMS
2 43 (3.05%) Elasticsearch
3 39 (2.77%) Apache Airflow
4 23 (1.63%) Confluence
4 23 (1.63%) Gunicorn
5 17 (1.21%) Apache
6 14 (0.99%) IBM Domino
6 14 (0.99%) nginx
7 13 (0.92%) Headless CMS
8 11 (0.78%) WordPress
9 10 (0.71%) Drupal
9 10 (0.71%) MediaWiki
10 9 (0.64%) Apache Spark
11 8 (0.57%) Magnolia
11 8 (0.57%) Tomcat
12 6 (0.43%) Sitecore CMS
12 6 (0.43%) Umbraco
13 4 (0.28%) EPiServer
13 4 (0.28%) Jetty
13 4 (0.28%) Kentico
Applications
1 26 (1.84%) Microsoft Office
2 11 (0.78%) Adobe Illustrator
2 11 (0.78%) Microsoft Excel
2 11 (0.78%) Photoshop
3 10 (0.71%) Adobe XD
4 7 (0.50%) Figma
4 7 (0.50%) Spreadsheet
5 1 (0.071%) Adobe Creative Suite
5 1 (0.071%) Fireworks
5 1 (0.071%) Sketch
5 1 (0.071%) Zeplin
Business Applications
1 27 (1.91%) Payment Gateway
2 11 (0.78%) Shopify
3 4 (0.28%) Summit
4 2 (0.14%) Academy Revenues and Benefits
4 2 (0.14%) SDL Web 8
5 1 (0.071%) Sentinel
Cloud Services
1 455 (32.27%) AWS
2 259 (18.37%) Azure
3 172 (12.20%) Serverless
4 147 (10.43%) GCP
5 119 (8.44%) SaaS
6 115 (8.16%) GitHub
7 105 (7.45%) AWS Lambda
8 74 (5.25%) Amazon S3
9 63 (4.47%) Heroku
10 52 (3.69%) AWS Step Functions
11 45 (3.19%) Amazon EC2
12 43 (3.05%) NuGet
13 35 (2.48%) Azure Functions
14 29 (2.06%) Cloud Computing
15 15 (1.06%) Azure Service Bus
16 14 (0.99%) Amazon CloudWatch
16 14 (0.99%) Azure App Service
16 14 (0.99%) Azure Event Grid
16 14 (0.99%) Azure Service Fabric
17 13 (0.92%) Azure Key Vault
Communications & Networking
1 147 (10.43%) HTTP
2 44 (3.12%) Broadband
3 13 (0.92%) Internet
4 9 (0.64%) RIP
5 8 (0.57%) Asterisk PBX
5 8 (0.57%) VoIP
6 3 (0.21%) AMQP
6 3 (0.21%) TCP/IP
7 1 (0.071%) 5G
7 1 (0.071%) Intranet
7 1 (0.071%) SSH
7 1 (0.071%) VPN
Database & Business Intelligence
1 251 (17.80%) PostgreSQL
2 202 (14.33%) NoSQL
3 118 (8.37%) MySQL
4 95 (6.74%) Redis
4 95 (6.74%) Relational Database
5 88 (6.24%) SQL Server
6 74 (5.25%) MongoDB
7 67 (4.75%) Amazon DynamoDB
8 62 (4.40%) Big Data
9 41 (2.91%) Azure SQL Database
10 31 (2.20%) Data Warehouse
11 27 (1.91%) Couchbase
11 27 (1.91%) Kalido
12 26 (1.84%) Apache Cassandra
13 23 (1.63%) Amazon RDS
14 20 (1.42%) Hadoop
15 16 (1.13%) Blockchain
16 13 (0.92%) Oracle Database
16 13 (0.92%) Power BI
17 12 (0.85%) RDBMS
Development Applications
1 232 (16.45%) Git (software)
2 88 (6.24%) TeamCity
3 70 (4.96%) Octopus Deploy
4 58 (4.11%) CircleCI
5 54 (3.83%) git-flow
6 52 (3.69%) JIRA
7 50 (3.55%) Jenkins
8 47 (3.33%) webpack
9 42 (2.98%) Gradle
10 33 (2.34%) GitLab
11 26 (1.84%) gulp
12 21 (1.49%) Cucumber
13 18 (1.28%) Postman
13 18 (1.28%) Selenium
14 17 (1.21%) JMeter
14 17 (1.21%) Mocha
14 17 (1.21%) Travis CI
15 16 (1.13%) Jasmine
16 15 (1.06%) Cypress.io
16 15 (1.06%) Xcode
General
1 497 (35.25%) Finance
2 292 (20.71%) Social Skills
3 178 (12.62%) Banking
4 116 (8.23%) Analytical Skills
4 116 (8.23%) Retail
5 89 (6.31%) Marketing
6 83 (5.89%) Games
7 46 (3.26%) Retail Banking
8 30 (2.13%) Inclusion and Diversity
9 29 (2.06%) Telecoms
10 28 (1.99%) Advertising
10 28 (1.99%) Manufacturing
11 23 (1.63%) Automotive
12 20 (1.42%) Organisational Skills
12 20 (1.42%) Publishing
13 15 (1.06%) Russian Language
14 13 (0.92%) Public Sector
15 10 (0.71%) Electronics
15 10 (0.71%) Front Office
16 9 (0.64%) Back Office
Job Titles
1 717 (50.85%) Developer
2 343 (24.33%) Software Engineer
3 197 (13.97%) Senior Developer
4 133 (9.43%) Senior Software Engineer
5 129 (9.15%) Front End Developer (Client-Side Developer)
6 124 (8.79%) Full Stack Developer
7 103 (7.30%) Backend Developer
8 78 (5.53%) Software Developer
9 62 (4.40%) Java Developer
10 61 (4.33%) Lead Developer
11 54 (3.83%) React Developer
12 48 (3.40%) Mobile Developer
13 42 (2.98%) Java Engineer
14 39 (2.77%) .NET Software Engineer
15 37 (2.62%) Python Developer
16 36 (2.55%) C# Developer
17 33 (2.34%) AWS Developer
18 31 (2.20%) Data Engineer
19 27 (1.91%) Senior Full Stack Developer
20 26 (1.84%) .NET Developer
Libraries, Frameworks & Software Standards
1 424 (30.07%) React
2 313 (22.20%) CSS
3 300 (21.28%) .NET
4 293 (20.78%) REST
5 269 (19.08%) HTML
5 269 (19.08%) Node.js
6 247 (17.52%) RESTful
7 204 (14.47%) AngularJS
8 167 (11.84%) .NET Core
9 158 (11.21%) Kafka
10 135 (9.57%) Django
11 121 (8.58%) GraphQL
11 121 (8.58%) Vue.js
12 86 (6.10%) React Native
12 86 (6.10%) Web Services
13 84 (5.96%) COM
14 80 (5.67%) HTML5
15 73 (5.18%) .NET Framework
16 70 (4.96%) gRPC
16 70 (4.96%) Ruby on Rails
Miscellaneous
1 316 (22.41%) User Experience
2 124 (8.79%) Algorithms
3 119 (8.44%) Mobile App
4 100 (7.09%) Data Structures
5 81 (5.74%) Self-Motivation
6 68 (4.82%) Greenfield Project
7 63 (4.47%) Cloud Native
8 58 (4.11%) Social Media
9 56 (3.97%) Virtual Team
10 45 (3.19%) Hedge funds
11 43 (3.05%) Legacy Systems
12 35 (2.48%) Video\Live Streaming
13 33 (2.34%) Foreign Exchange (FX)
14 31 (2.20%) Legacy Code
15 26 (1.84%) Legacy Applications
16 21 (1.49%) Robotics
17 19 (1.35%) Client/Server
18 18 (1.28%) Industry 4.0
18 18 (1.28%) Mobile Banking
18 18 (1.28%) NHS
Operating Systems
1 99 (7.02%) Apple iOS
2 89 (6.31%) Android
3 78 (5.53%) Linux
4 33 (2.34%) Unix
5 20 (1.42%) Windows
6 3 (0.21%) Mac OS
7 1 (0.071%) Ubuntu
Processes & Methodologies
1 690 (48.94%) Agile Software Development
2 503 (35.67%) Software Engineering
3 337 (23.90%) Microservices
4 336 (23.83%) TDD
5 316 (22.41%) Fintech
6 286 (20.28%) Full Stack Development
7 267 (18.94%) Test Automation
8 245 (17.38%) Continuous Integration
9 242 (17.16%) SDLC
10 236 (16.74%) DevOps
11 202 (14.33%) SOLID
12 201 (14.26%) Problem-Solving
13 195 (13.83%) OOP
14 187 (13.26%) Computer Science
15 181 (12.84%) Mentoring
16 162 (11.49%) Artificial Intelligence
17 158 (11.21%) Front End Development
18 157 (11.13%) Continuous Improvement
19 148 (10.50%) Event-Driven
20 145 (10.28%) OO
Programming Languages
1 625 (44.33%) JavaScript
2 392 (27.80%) Python
3 372 (26.38%) SQL
4 330 (23.40%) TypeScript
5 300 (21.28%) Java
6 288 (20.43%) C#
7 100 (7.09%) Kotlin
8 89 (6.31%) Go
9 86 (6.10%) PHP
10 83 (5.89%) Ruby
11 77 (5.46%) C
12 51 (3.62%) Scala
13 50 (3.55%) C++
14 42 (2.98%) Apple Swift
15 41 (2.91%) Java 8
16 28 (1.99%) Elm
17 26 (1.84%) Dart
18 19 (1.35%) Cython
19 18 (1.28%) ES6
20 16 (1.13%) PowerShell
Qualifications
1 144 (10.21%) Degree
2 64 (4.54%) Computer Science Degree
3 43 (3.05%) AWS Certification
4 14 (0.99%) MBA
4 14 (0.99%) PhD
5 6 (0.43%) Master's Degree
5 6 (0.43%) Numerate Degree
6 3 (0.21%) DBS Check
6 3 (0.21%) SC Cleared
6 3 (0.21%) Security Cleared
Quality Assurance & Compliance
1 172 (12.20%) QA
2 32 (2.27%) GDPR
3 23 (1.63%) GRC
4 15 (1.06%) Accessibility
5 4 (0.28%) Data Quality
6 1 (0.071%) ISO/IEC 27001
6 1 (0.071%) SOC 2
6 1 (0.071%) WAI
6 1 (0.071%) WCAG
System Software
1 493 (34.96%) Docker
2 2 (0.14%) Active Directory
2 2 (0.14%) VMware Infrastructure
3 1 (0.071%) Varnish
Systems Management
1 293 (20.78%) Kubernetes
2 121 (8.58%) Terraform
3 34 (2.41%) Ansible
4 18 (1.28%) Puppet
5 16 (1.13%) Grafana
5 16 (1.13%) Opscode Chef
6 15 (1.06%) Prometheus
7 8 (0.57%) Argo
7 8 (0.57%) Kibana
8 6 (0.43%) Istio
9 5 (0.35%) Docker Swarm
10 4 (0.28%) Capistrano
11 2 (0.14%) Consul
12 1 (0.071%) ZABBIX
Vendors
1 168 (11.91%) Microsoft
2 121 (8.58%) Samsung
3 93 (6.60%) Google
4 28 (1.99%) Oracle
5 27 (1.91%) Alibaba
6 26 (1.84%) Yahoo!
7 22 (1.56%) New Relic
8 21 (1.49%) Apple
9 11 (0.78%) Adobe
9 11 (0.78%) Atlassian
10 9 (0.64%) Okta
11 8 (0.57%) Optimizely
11 8 (0.57%) Snapchat
11 8 (0.57%) Xamarin
12 7 (0.50%) Salesforce.com
13 6 (0.43%) Sitecore
13 6 (0.43%) Stackify
14 5 (0.35%) Spotify
15 4 (0.28%) Alteryx
15 4 (0.28%) Dynatrace