Period
to 26 September 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of 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 26 September 2021 with a comparison to the same period in the previous 2 years.

Clean Code
Central London > City of London
6 months to
26 Sep 2021
Same period 2020 Same period 2019
Rank 141 119 148
Rank change year-on-year -22 +29 +54
Permanent jobs citing Clean Code 108 80 221
As % of all permanent jobs advertised in the City of London 1.85% 2.13% 2.19%
As % of the Processes & Methodologies category 1.96% 2.26% 2.33%
Number of salaries quoted 105 80 218
10th Percentile £46,250 £51,250 £53,750
25th Percentile £53,750 £56,000 £57,500
Median annual salary (50th Percentile) £67,500 £75,000 £72,500
Median % change year-on-year -10.00% +3.45% +11.54%
75th Percentile £95,000 £90,000 £87,500
90th Percentile £110,000 £110,000 £92,500
Central London median annual salary £67,500 £72,500 £72,500
% change year-on-year -6.90% - +16.00%

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 the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Permanent vacancies with a requirement for process or methodology skills 5,523 3,547 9,485
As % of all permanent IT jobs advertised in the City of London 94.41% 94.36% 93.84%
Number of salaries quoted 4,932 3,085 8,401
10th Percentile £42,500 £45,000 £37,500
25th Percentile £55,000 £53,750 £51,250
Median annual salary (50th Percentile) £72,500 £70,000 £67,500
Median % change year-on-year +3.57% +3.70% +3.85%
75th Percentile £91,250 £86,250 £82,500
90th Percentile £107,500 £102,500 £97,500
Central London median annual salary £70,000 £70,000 £65,000
% change year-on-year - +7.69% +4.00%

Clean Code
Job Vacancy Trend in the City of London

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

Job vacancy trend for Clean Code in the City of London

Clean Code
Salary Trend in the City of London

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

Salary trend for Clean Code in the City of London

Clean Code
Salary Histogram in the City of London

Salary distribution for jobs citing Clean Code in the City of London over the 6 months to 26 September 2021.

Salary histogram for Clean Code in the City of London

For the 6 months to 26 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 City of London region with a requirement for Clean Code.

1 42 (38.89%) Agile Software Development
2 39 (36.11%) Kubernetes
3 38 (35.19%) Git (software)
4 35 (32.41%) JavaScript
5 32 (29.63%) Java
6 29 (26.85%) .NET
6 29 (26.85%) Software Engineering
6 29 (26.85%) REST
7 28 (25.93%) Test Automation
8 27 (25.00%) Multithreading
8 27 (25.00%) Software Testing
9 24 (22.22%) Kafka
9 24 (22.22%) SDET
10 23 (21.30%) Jenkins
11 22 (20.37%) Web Services
12 21 (19.44%) C#
12 21 (19.44%) Azure
13 20 (18.52%) JMS
13 20 (18.52%) Finance
13 20 (18.52%) Docker
13 20 (18.52%) Greenfield Project
13 20 (18.52%) Java 8
13 20 (18.52%) Self-Motivation
14 19 (17.59%) Big Data
14 19 (17.59%) MongoDB
14 19 (17.59%) Apache Cassandra
14 19 (17.59%) OOP
14 19 (17.59%) Hadoop
14 19 (17.59%) ActiveMQ
15 18 (16.67%) BDD

Clean Code
Co-occurring IT Skills in the City of 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 1 (0.93%) Confluence
1 1 (0.93%) Jetty
1 1 (0.93%) MS Exchange
Applications
1 1 (0.93%) Zeplin
Cloud Services
1 21 (19.44%) Azure
2 10 (9.26%) Serverless
3 7 (6.48%) Azure Functions
3 7 (6.48%) Azure Service Bus
3 7 (6.48%) NuGet
4 6 (5.56%) Azure App Service
4 6 (5.56%) Azure Event Grid
4 6 (5.56%) Azure Service Fabric
5 4 (3.70%) GitHub
6 3 (2.78%) AWS
6 3 (2.78%) GCP
7 2 (1.85%) AWS Lambda
7 2 (1.85%) npm
7 2 (1.85%) PaaS
8 1 (0.93%) Azure Data Factory
8 1 (0.93%) BrowserStack
8 1 (0.93%) Firebase
8 1 (0.93%) IaaS
8 1 (0.93%) Microsoft 365
8 1 (0.93%) SaaS
Communications & Networking
1 9 (8.33%) Internet
2 1 (0.93%) HTTP
Database & Business Intelligence
1 19 (17.59%) Apache Cassandra
1 19 (17.59%) Big Data
1 19 (17.59%) Hadoop
1 19 (17.59%) MongoDB
2 14 (12.96%) SQL Server
3 7 (6.48%) Azure SQL Database
4 6 (5.56%) NoSQL
5 4 (3.70%) Relational Database
6 1 (0.93%) Data Lake
6 1 (0.93%) MySQL
6 1 (0.93%) PostgreSQL
6 1 (0.93%) Power BI
6 1 (0.93%) Qlik Sense
6 1 (0.93%) RDBMS
6 1 (0.93%) Redis
6 1 (0.93%) SQL Server Analysis Services
6 1 (0.93%) SQL Server Integration Services
6 1 (0.93%) Tableau
Development Applications
1 38 (35.19%) Git (software)
2 23 (21.30%) Jenkins
3 13 (12.04%) Cucumber
4 12 (11.11%) CircleCI
4 12 (11.11%) Cypress.io
5 11 (10.19%) Postman
6 7 (6.48%) Jasmine
7 5 (4.63%) Selenium
8 2 (1.85%) Gradle
8 2 (1.85%) Maven
9 1 (0.93%) Apache Ivy
9 1 (0.93%) Bitbucket
9 1 (0.93%) Codeship
9 1 (0.93%) Concordion
9 1 (0.93%) gulp
9 1 (0.93%) Mocha
9 1 (0.93%) Mockito
9 1 (0.93%) Moq
9 1 (0.93%) SoapUI
9 1 (0.93%) webpack
General
1 20 (18.52%) Finance
2 9 (8.33%) Electronics
3 3 (2.78%) Banking
3 3 (2.78%) Marketing
4 2 (1.85%) Advertising
5 1 (0.93%) Analytical Skills
5 1 (0.93%) Public Sector
5 1 (0.93%) Publishing
Job Titles
1 65 (60.19%) Developer
2 26 (24.07%) Java Developer
3 13 (12.04%) Software Engineer
4 10 (9.26%) Mobile Developer
5 9 (8.33%) Applications Developer
5 9 (8.33%) Mobile Applications Developer
5 9 (8.33%) Xamarin Developer
6 8 (7.41%) C++ Developer
6 8 (7.41%) Senior Developer
7 7 (6.48%) C# Software Engineer
8 6 (5.56%) Server Engineer
8 6 (5.56%) Serverless Engineer
9 5 (4.63%) .NET Developer
9 5 (4.63%) C# Developer
9 5 (4.63%) Front End Developer (Client-Side Developer)
10 4 (3.70%) Senior C++ Developer
10 4 (3.70%) Senior Software Engineer
10 4 (3.70%) Software Engineering Team Leader
10 4 (3.70%) Software Team Leader
10 4 (3.70%) Team Leader
Libraries, Frameworks & Software Standards
1 29 (26.85%) .NET
1 29 (26.85%) REST
2 24 (22.22%) Kafka
3 22 (20.37%) Web Services
4 20 (18.52%) JMS
5 19 (17.59%) ActiveMQ
6 15 (13.89%) .NET Core
7 13 (12.04%) React
8 12 (11.11%) GraphQL
8 12 (11.11%) STL
9 11 (10.19%) CSS
9 11 (10.19%) Node.js
10 10 (9.26%) JSON
11 9 (8.33%) HTML
11 9 (8.33%) Reactive Extensions
11 9 (8.33%) RESTful
12 8 (7.41%) AngularJS
12 8 (7.41%) WebdriverIO
13 7 (6.48%) ASP.NET Web API
14 6 (5.56%) Spring
Miscellaneous
1 20 (18.52%) Greenfield Project
1 20 (18.52%) Self-Motivation
2 17 (15.74%) User Experience
3 13 (12.04%) Mobile App
4 12 (11.11%) Spread Betting
5 9 (8.33%) Internet of Things
6 8 (7.41%) Foreign Exchange (FX)
7 6 (5.56%) Legacy Systems
8 4 (3.70%) Marketing Technology
9 2 (1.85%) Hedge funds
9 2 (1.85%) Legacy Code
9 2 (1.85%) Wiki
10 1 (0.93%) Client/Server
Operating Systems
1 14 (12.96%) Android
1 14 (12.96%) Apple iOS
2 12 (11.11%) Linux
2 12 (11.11%) Unix
Processes & Methodologies
1 42 (38.89%) Agile Software Development
2 29 (26.85%) Software Engineering
3 28 (25.93%) Test Automation
4 27 (25.00%) Multithreading
4 27 (25.00%) Software Testing
5 24 (22.22%) SDET
6 19 (17.59%) OOP
7 18 (16.67%) BDD
8 17 (15.74%) DevOps
9 14 (12.96%) TDD
10 13 (12.04%) Full Stack Development
10 13 (12.04%) MVC
11 12 (11.11%) Low Latency
11 12 (11.11%) OO
11 12 (11.11%) OOD
12 11 (10.19%) API Testing
12 11 (10.19%) Continuous Integration
12 11 (10.19%) Scrum
13 10 (9.26%) SOLID
14 8 (7.41%) Fintech
Programming Languages
1 35 (32.41%) JavaScript
2 32 (29.63%) Java
3 21 (19.44%) C#
4 20 (18.52%) Java 8
5 13 (12.04%) SQL
6 12 (11.11%) C++
7 10 (9.26%) TypeScript
8 5 (4.63%) Python
9 4 (3.70%) T-SQL
10 3 (2.78%) PHP
11 2 (1.85%) PowerShell
12 1 (0.93%) Apple Swift
12 1 (0.93%) Bash Shell
12 1 (0.93%) Kotlin
12 1 (0.93%) R
Qualifications
1 3 (2.78%) Computer Science Degree
1 3 (2.78%) Degree
2 2 (1.85%) Numerate Degree
3 1 (0.93%) DBS Check
Quality Assurance & Compliance
1 15 (13.89%) QA
2 1 (0.93%) Accessibility
System Software
1 20 (18.52%) Docker
Systems Management
1 39 (36.11%) Kubernetes
2 1 (0.93%) Terraform
Vendors
1 9 (8.33%) Xamarin
2 5 (4.63%) Microsoft
3 1 (0.93%) Alteryx
3 1 (0.93%) Atlassian
3 1 (0.93%) Dynatrace
3 1 (0.93%) Google
3 1 (0.93%) New Relic
3 1 (0.93%) Oracle