Period
to 21 September 2021

The table below looks at the prevalence of the term Legacy Code in permanent job vacancies advertised in London. Included is a benchmarking guide to the salaries offered in vacancies that have cited Legacy Code over the 6 months to 21 September 2021 with a comparison to the same period over the previous 2 years.

Legacy Code
England > London
6 months to
21 Sep 2021
Same period 2020 Same period 2019
Rank 532 431 561
Rank change year-on-year -101 +130 +157
Permanent jobs citing Legacy Code 182 61 179
As % of all permanent jobs advertised in London 0.37% 0.30% 0.32%
As % of the Miscellaneous category 0.84% 0.73% 0.86%
Number of salaries quoted 81 54 163
10th Percentile £37,500 £62,250 £37,500
25th Percentile £45,000 £72,500 £52,500
Median annual salary (50th Percentile) £70,000 £82,500 £70,000
Median % change year-on-year -15.15% +17.86% +3.70%
75th Percentile £86,250 £97,500 £85,000
90th Percentile £93,750 " £94,500
England median annual salary £52,500 £52,500 £55,000
% change year-on-year - -4.55% +10.00%

Legacy Code is in the Generic IT Skills 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 generic IT skills.

All Generic IT Skills
London
Permanent vacancies with a requirement for generic IT skills 21,749 8,302 20,932
As % of all permanent IT jobs advertised in London 44.30% 40.74% 37.71%
Number of salaries quoted 12,681 6,867 16,520
10th Percentile £42,500 £42,500 £36,250
25th Percentile £53,750 £54,027 £47,500
Median annual salary (50th Percentile) £72,500 £72,500 £65,000
Median % change year-on-year - +11.54% -
75th Percentile £92,500 £95,000 £85,000
90th Percentile £112,500 £120,000 £105,000
England median annual salary £60,000 £59,254 £55,000
% change year-on-year +1.26% +7.73% +4.76%

Legacy Code
Job Vacancy Trend in London

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

Job vacancy trend for Legacy Code in London

Legacy Code
Salary Trend in London

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

Salary trend for Legacy Code in London

Legacy Code
Salary Histogram in London

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

Salary histogram for Legacy Code in London

Legacy 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 Legacy 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 -79 23 £80,000 -3.03% 5
West London - 1 £72,500 - 2
Legacy Code
England

For the 6 months to 21 September 2021, IT jobs citing Legacy 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 Legacy Code.

1 97 (53.30%) React
2 88 (48.35%) JavaScript
3 87 (47.80%) Software Engineering
4 83 (45.60%) Agile Software Development
5 70 (38.46%) AWS
6 69 (37.91%) HTML
7 65 (35.71%) Full Stack Development
8 62 (34.07%) Unit Testing
9 60 (32.97%) Finance
10 59 (32.42%) CSS
11 53 (29.12%) Python
12 51 (28.02%) TDD
13 50 (27.47%) Docker
14 49 (26.92%) DevOps
15 44 (24.18%) Java
16 43 (23.63%) PHP
17 41 (22.53%) Refactoring
18 39 (21.43%) User Experience
19 36 (19.78%) AngularJS
19 36 (19.78%) .NET
20 35 (19.23%) OO
21 32 (17.58%) Django
21 32 (17.58%) Fintech
22 31 (17.03%) Clean Code
23 30 (16.48%) TypeScript
23 30 (16.48%) Mentoring
23 30 (16.48%) REST
24 29 (15.93%) C#
24 29 (15.93%) Social Skills
25 28 (15.38%) OOP

Legacy 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 8 (4.40%) WordPress
2 4 (2.20%) CMS
3 3 (1.65%) Elasticsearch
3 3 (1.65%) Jetty
3 3 (1.65%) SharePoint
3 3 (1.65%) SharePoint 2013
4 2 (1.10%) Camunda
5 1 (0.55%) Confluence
5 1 (0.55%) nginx
5 1 (0.55%) Oracle SOA Suite
Applications
1 3 (1.65%) Microsoft Excel
2 1 (0.55%) Figma
Business Applications
1 28 (15.38%) Magento
2 20 (10.99%) Shopify
3 10 (5.49%) Payment Gateway
4 1 (0.55%) Oracle Receivables
Cloud Services
1 70 (38.46%) AWS
2 27 (14.84%) Amazon ECS
3 20 (10.99%) Amazon SQS
4 17 (9.34%) Azure
5 7 (3.85%) Amazon EC2
5 7 (3.85%) Datadog
5 7 (3.85%) Serverless
6 6 (3.30%) Amazon ELB
6 6 (3.30%) AWS CloudFormation
6 6 (3.30%) AWS Fargate
6 6 (3.30%) AWS Lambda
6 6 (3.30%) GitHub
6 6 (3.30%) Virtual Private Cloud
7 5 (2.75%) SaaS
8 3 (1.65%) GitHub Actions
8 3 (1.65%) Heroku
9 1 (0.55%) Amazon S3
9 1 (0.55%) Azure Service Bus
9 1 (0.55%) Route 53
Communications & Networking
1 6 (3.30%) DNS
1 6 (3.30%) TCP/IP
2 1 (0.55%) Firewall
2 1 (0.55%) VoIP
2 1 (0.55%) Wi-Fi
Database & Business Intelligence
1 26 (14.29%) PostgreSQL
2 21 (11.54%) MySQL
3 20 (10.99%) Redis
4 10 (5.49%) Relational Database
5 5 (2.75%) Amazon DynamoDB
5 5 (2.75%) NoSQL
5 5 (2.75%) RDBMS
6 4 (2.20%) MongoDB
6 4 (2.20%) SQL Server
7 3 (1.65%) Blockchain
7 3 (1.65%) MariaDB
8 1 (0.55%) Azure SQL Database
Development Applications
1 25 (13.74%) Jenkins
2 24 (13.19%) CircleCI
2 24 (13.19%) Git (software)
3 18 (9.89%) PHPUnit
4 10 (5.49%) Terragrunt
5 5 (2.75%) webpack
6 4 (2.20%) Artifactory
6 4 (2.20%) Gradle
6 4 (2.20%) TeamCity
7 3 (1.65%) Cypress.io
7 3 (1.65%) Mocha
7 3 (1.65%) Team Foundation Server
8 2 (1.10%) SonarQube
8 2 (1.10%) Xcode
9 1 (0.55%) Ant
9 1 (0.55%) gulp
9 1 (0.55%) JIRA
9 1 (0.55%) Moq
9 1 (0.55%) Octopus Deploy
General
1 60 (32.97%) Finance
2 29 (15.93%) Social Skills
3 28 (15.38%) Retail
4 24 (13.19%) Games
5 14 (7.69%) Banking
6 5 (2.75%) Marketing
6 5 (2.75%) Retail Finance
7 3 (1.65%) Documentation Skills
7 3 (1.65%) Front Office
7 3 (1.65%) Publishing
8 1 (0.55%) Advertising
8 1 (0.55%) Analytical Skills
8 1 (0.55%) Military
Job Titles
1 84 (46.15%) Developer
2 61 (33.52%) Software Engineer
3 27 (14.84%) Senior Software Engineer
4 22 (12.09%) PHP Developer
5 16 (8.79%) Full Stack Developer
6 15 (8.24%) Lead Software Engineer
6 15 (8.24%) Senior Developer
7 14 (7.69%) PHP Developer - Fintech
7 14 (7.69%) PHP Laravel Developer
8 11 (6.04%) .NET Software Engineer
9 10 (5.49%) DevOps Engineer
9 10 (5.49%) Integration Engineer
9 10 (5.49%) React Developer
9 10 (5.49%) Software Integration Engineer
10 8 (4.40%) JavaScript Engineer
11 7 (3.85%) Backend Developer
12 6 (3.30%) Mobile Developer
12 6 (3.30%) Senior Mobile Developer
12 6 (3.30%) Senior React Developer
13 5 (2.75%) Technical Leader
Libraries, Frameworks & Software Standards
1 97 (53.30%) React
2 69 (37.91%) HTML
3 59 (32.42%) CSS
4 36 (19.78%) .NET
4 36 (19.78%) AngularJS
5 32 (17.58%) Django
6 30 (16.48%) REST
7 27 (14.84%) Node.js
8 23 (12.64%) RESTful
9 22 (12.09%) jQuery
9 22 (12.09%) Laravel
10 21 (11.54%) Sass
11 20 (10.99%) React Native
12 19 (10.44%) Jest
13 18 (9.89%) Flask
14 16 (8.79%) Redux
15 15 (8.24%) LAMP
16 14 (7.69%) Vue.js
17 12 (6.59%) Web Services
18 11 (6.04%) Kafka
Miscellaneous
1 39 (21.43%) User Experience
2 16 (8.79%) Mobile App
3 15 (8.24%) Legacy Systems
4 14 (7.69%) Greenfield Project
4 14 (7.69%) Self-Motivation
5 9 (4.95%) Blog
5 9 (4.95%) Virtual Team
6 4 (2.20%) Podcast
7 3 (1.65%) Animation
8 2 (1.10%) Legacy Applications
9 1 (0.55%) Cloud Native
9 1 (0.55%) Enterprise Software
9 1 (0.55%) Foreign Exchange (FX)
9 1 (0.55%) NHS
Operating Systems
1 12 (6.59%) Android
2 11 (6.04%) Apple iOS
3 2 (1.10%) Unix
4 1 (0.55%) Linux
Processes & Methodologies
1 87 (47.80%) Software Engineering
2 83 (45.60%) Agile Software Development
3 65 (35.71%) Full Stack Development
4 62 (34.07%) Unit Testing
5 51 (28.02%) TDD
6 49 (26.92%) DevOps
7 41 (22.53%) Refactoring
8 35 (19.23%) OO
9 32 (17.58%) Fintech
10 31 (17.03%) Clean Code
11 30 (16.48%) Mentoring
12 28 (15.38%) OOP
13 27 (14.84%) Microservices
14 24 (13.19%) Test Automation
15 22 (12.09%) Coaching
16 21 (11.54%) E-Commerce
17 20 (10.99%) Data-Driven Decision Making
17 20 (10.99%) Technical Architecture
18 18 (9.89%) Prototyping
18 18 (9.89%) Scrum
Programming Languages
1 88 (48.35%) JavaScript
2 53 (29.12%) Python
3 44 (24.18%) Java
4 43 (23.63%) PHP
5 30 (16.48%) TypeScript
6 29 (15.93%) C#
7 16 (8.79%) ES6
8 15 (8.24%) PHP 7
8 15 (8.24%) Scala
9 12 (6.59%) SQL
10 7 (3.85%) Kotlin
10 7 (3.85%) Ruby
11 5 (2.75%) Clojure
12 4 (2.20%) Apple Swift
12 4 (2.20%) F#
12 4 (2.20%) Objective-C
13 3 (1.65%) PowerShell
13 3 (1.65%) Shell Script
13 3 (1.65%) Solidity
13 3 (1.65%) VBA
Qualifications
1 18 (9.89%) Degree
2 6 (3.30%) AWS Certification
2 6 (3.30%) MBA
3 5 (2.75%) Computer Science Degree
4 4 (2.20%) Security Cleared
5 3 (1.65%) SC Cleared
6 1 (0.55%) DV Cleared
Quality Assurance & Compliance
1 22 (12.09%) QA
2 11 (6.04%) Accessibility
3 1 (0.55%) GDPR
3 1 (0.55%) HIPAA
3 1 (0.55%) ISO/IEC 27001
3 1 (0.55%) SOC 2
System Software
1 50 (27.47%) Docker
Systems Management
1 23 (12.64%) Terraform
2 14 (7.69%) Kubernetes
Vendors
1 9 (4.95%) Microsoft
2 6 (3.30%) Google
3 3 (1.65%) Zend
4 2 (1.10%) Dynatrace
5 1 (0.55%) Atlassian
5 1 (0.55%) Oracle