Period
to 20 September 2021

The table below looks at the prevalence of the term Legacy Code in permanent job vacancies. Included is a benchmarking guide to the salaries offered in vacancies that have cited Legacy Code over the 6 months to 20 September 2021 with a comparison to the same period over the previous 2 years.

Legacy Code
UK
6 months to
20 Sep 2021
Same period 2020 Same period 2019
Rank 698 562 764
Rank change year-on-year -136 +202 +98
Permanent jobs citing Legacy Code 341 137 346
As % of all permanent jobs advertised in the UK 0.28% 0.28% 0.24%
As % of the Miscellaneous category 0.70% 0.78% 0.70%
Number of salaries quoted 185 125 315
10th Percentile £35,000 £32,500 £37,500
25th Percentile £40,000 £36,250 £41,250
Median annual salary (50th Percentile) £52,500 £52,500 £55,000
Median % change year-on-year - -4.55% +10.00%
75th Percentile £72,500 £88,750 £77,500
90th Percentile £86,250 £97,500 £85,000
UK excluding London median annual salary £47,500 £40,000 £45,000
% change year-on-year +18.75% -11.11% -

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 with a requirement for generic IT skills.

All Generic IT Skills
UK
Permanent vacancies with a requirement for generic IT skills 48,649 17,659 49,728
As % of all permanent IT jobs advertised in the UK 40.19% 35.95% 35.18%
Number of salaries quoted 29,213 14,314 37,926
10th Percentile £32,500 £32,788 £30,000
25th Percentile £42,500 £42,500 £37,500
Median annual salary (50th Percentile) £60,000 £57,500 £53,000
Median % change year-on-year +4.35% +8.49% +0.95%
75th Percentile £80,000 £78,750 £72,500
90th Percentile £97,500 £100,000 £90,000
UK excluding London median annual salary £50,000 £48,000 £45,000
% change year-on-year +4.17% +6.67% -

Legacy Code
Job Vacancy Trend

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

Job vacancy trend for Legacy Code in the UK

Legacy Code
Salary Trend

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

Salary trend for Legacy Code in the UK

Legacy Code
Salary Histogram

Salary distribution for jobs citing Legacy Code over the 6 months to 20 September 2021.

Salary histogram for Legacy Code in the UK

Legacy Code
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Legacy Code within the UK over the 6 months to 20 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 -135 313 £52,500 - 42
London -106 182 £70,000 -15.15% 23
UK excluding London -161 149 £47,500 +18.75% 21
Work from Home -207 83 £50,000 -2.44% 17
North of England -90 62 £50,000 +29.87% 7
Yorkshire -76 36 £57,500 +53.33% 1
South East -142 34 £45,000 +12.50% 5
North West -75 22 £40,000 +14.29% 6
Scotland -74 18 £50,000 +11.11% 2
Midlands -114 18 £40,000 +9.59% 4
West Midlands -92 13 £70,000 +69.70% 3
South West -81 11 £60,000 +20.00% 2
East Midlands -76 5 £37,500 +4.17% 1
East of England - 5 £42,500 - 1
North East -51 4 £41,250 -14.95%
Wales - 1 - -

For the 6 months to 20 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 with a requirement for Legacy Code.

1 179 (52.49%) Agile Software Development
2 171 (50.15%) JavaScript
3 169 (49.56%) React
4 139 (40.76%) Software Engineering
5 136 (39.88%) HTML
6 119 (34.90%) CSS
7 117 (34.31%) Docker
8 112 (32.84%) AWS
8 112 (32.84%) Full Stack Development
9 111 (32.55%) Unit Testing
10 101 (29.62%) PHP
11 99 (29.03%) TDD
12 84 (24.63%) Java
12 84 (24.63%) .NET
13 83 (24.34%) Git (software)
14 81 (23.75%) OO
15 76 (22.29%) User Experience
16 75 (21.99%) C#
17 73 (21.41%) Finance
18 70 (20.53%) MySQL
19 65 (19.06%) Mentoring
20 61 (17.89%) DevOps
20 61 (17.89%) Node.js
20 61 (17.89%) AngularJS
21 60 (17.60%) Microservices
21 60 (17.60%) OOP
21 60 (17.60%) Python
22 59 (17.30%) Fintech
23 55 (16.13%) Test Automation
23 55 (16.13%) Refactoring

Legacy 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 11 (3.23%) Apache
1 11 (3.23%) CMS
1 11 (3.23%) Elasticsearch
2 8 (2.35%) Tomcat
2 8 (2.35%) WordPress
3 4 (1.17%) Umbraco
4 3 (0.88%) Confluence
4 3 (0.88%) Jetty
4 3 (0.88%) SharePoint
4 3 (0.88%) SharePoint 2013
5 2 (0.59%) Camunda
6 1 (0.29%) nginx
6 1 (0.29%) Oracle SOA Suite
Applications
1 3 (0.88%) Microsoft Excel
2 1 (0.29%) Figma
Business Applications
1 28 (8.21%) Magento
2 20 (5.87%) Shopify
3 19 (5.57%) Payment Gateway
4 1 (0.29%) Oracle Receivables
Cloud Services
1 112 (32.84%) AWS
2 42 (12.32%) Azure
3 27 (7.92%) Amazon ECS
4 23 (6.74%) Amazon SQS
5 19 (5.57%) PaaS
5 19 (5.57%) SaaS
6 17 (4.99%) Serverless
7 12 (3.52%) AWS CloudFormation
8 10 (2.93%) Amazon EC2
9 9 (2.64%) Cloud Computing
9 9 (2.64%) GitHub
10 8 (2.35%) Amazon CloudWatch
10 8 (2.35%) Amazon ElastiCache
11 7 (2.05%) AWS Lambda
11 7 (2.05%) Datadog
12 6 (1.76%) Amazon ELB
12 6 (1.76%) AWS Fargate
12 6 (1.76%) Virtual Private Cloud
13 4 (1.17%) Amazon S3
13 4 (1.17%) IaaS
Communications & Networking
1 9 (2.64%) Internet
2 6 (1.76%) DNS
2 6 (1.76%) TCP/IP
3 1 (0.29%) Ethernet
3 1 (0.29%) Firewall
3 1 (0.29%) VoIP
3 1 (0.29%) Wi-Fi
Database & Business Intelligence
1 70 (20.53%) MySQL
2 47 (13.78%) Redis
3 32 (9.38%) SQL Server
4 31 (9.09%) PostgreSQL
5 21 (6.16%) NoSQL
6 17 (4.99%) Relational Database
7 14 (4.11%) MongoDB
8 11 (3.23%) Apache Cassandra
8 11 (3.23%) Big Data
8 11 (3.23%) Oracle Database
9 8 (2.35%) InterSystems Cache
10 6 (1.76%) Amazon Aurora
10 6 (1.76%) MariaDB
10 6 (1.76%) RDBMS
11 5 (1.47%) Amazon DynamoDB
12 3 (0.88%) Blockchain
13 2 (0.59%) SQL Server Reporting Services
14 1 (0.29%) Azure SQL Database
14 1 (0.29%) Data Warehouse
14 1 (0.29%) Oracle Database 12c
Development Applications
1 83 (24.34%) Git (software)
2 51 (14.96%) Jenkins
3 38 (11.14%) webpack
4 37 (10.85%) PHPUnit
5 24 (7.04%) CircleCI
6 22 (6.45%) Babel
7 11 (3.23%) JUnit
7 11 (3.23%) Maven
8 10 (2.93%) Terragrunt
9 7 (2.05%) JIRA
10 6 (1.76%) Team Foundation Server
11 5 (1.47%) TeamCity
11 5 (1.47%) Visual Studio
12 4 (1.17%) Artifactory
12 4 (1.17%) Gradle
13 3 (0.88%) Bitbucket
13 3 (0.88%) Cypress.io
13 3 (0.88%) Mocha
13 3 (0.88%) PhpStorm
13 3 (0.88%) Xdebug
General
1 73 (21.41%) Finance
2 52 (15.25%) Social Skills
3 51 (14.96%) Retail
4 47 (13.78%) Games
5 14 (4.11%) Banking
5 14 (4.11%) Retail Finance
6 5 (1.47%) Marketing
7 3 (0.88%) Documentation Skills
7 3 (0.88%) Front Office
7 3 (0.88%) Law
7 3 (0.88%) Legal
7 3 (0.88%) Publishing
8 2 (0.59%) Billing
8 2 (0.59%) Telecoms
9 1 (0.29%) Advertising
9 1 (0.29%) Aerospace
9 1 (0.29%) Automotive
9 1 (0.29%) Avionics
9 1 (0.29%) Local Government
9 1 (0.29%) Military
Job Titles
1 186 (54.55%) Developer
2 93 (27.27%) Software Engineer
3 48 (14.08%) Senior Software Engineer
4 43 (12.61%) PHP Developer
5 30 (8.80%) Full Stack Developer
6 22 (6.45%) Java Developer
6 22 (6.45%) PHP Laravel Developer
7 20 (5.87%) PHP Developer - Fintech
8 19 (5.57%) Lead Developer
8 19 (5.57%) Senior Developer
9 17 (4.99%) C# Developer
9 17 (4.99%) Lead Software Engineer
10 16 (4.69%) JavaScript Engineer
11 13 (3.81%) .NET Developer
11 13 (3.81%) React Developer
12 11 (3.23%) .NET Software Engineer
12 11 (3.23%) Lead Java Developer
13 10 (2.93%) Front End Developer (Client-Side Developer)
13 10 (2.93%) Integration Engineer
13 10 (2.93%) Software Integration Engineer
Libraries, Frameworks & Software Standards
1 169 (49.56%) React
2 136 (39.88%) HTML
3 119 (34.90%) CSS
4 84 (24.63%) .NET
5 61 (17.89%) AngularJS
5 61 (17.89%) Node.js
6 52 (15.25%) RESTful
7 50 (14.66%) REST
8 48 (14.08%) Redux
9 41 (12.02%) jQuery
9 41 (12.02%) Laravel
10 39 (11.44%) ASP.NET
11 38 (11.14%) Kafka
12 37 (10.85%) Jest
13 34 (9.97%) .NET Framework
14 32 (9.38%) Django
15 31 (9.09%) Vue.js
15 31 (9.09%) Web Services
16 30 (8.80%) Spring
17 29 (8.50%) Sass
Miscellaneous
1 76 (22.29%) User Experience
2 31 (9.09%) Mobile App
3 29 (8.50%) Greenfield Project
4 22 (6.45%) Self-Motivation
5 20 (5.87%) Legacy Systems
6 10 (2.93%) Data Protection Act
7 9 (2.64%) Blog
7 9 (2.64%) Virtual Team
8 7 (2.05%) Algorithms
9 5 (1.47%) Enterprise Software
9 5 (1.47%) Fibre Optics
10 4 (1.17%) Cloud Native
10 4 (1.17%) Podcast
11 3 (0.88%) Animation
12 2 (0.59%) Client/Server
12 2 (0.59%) Legacy Applications
12 2 (0.59%) NHS
13 1 (0.29%) Cybercrime
13 1 (0.29%) Device Driver
13 1 (0.29%) Foreign Exchange (FX)
Operating Systems
1 17 (4.99%) Linux
2 13 (3.81%) Android
3 11 (3.23%) Apple iOS
4 8 (2.35%) Ubuntu
5 5 (1.47%) CentOS
6 2 (0.59%) Unix
7 1 (0.29%) VxWorks
7 1 (0.29%) Windows
Processes & Methodologies
1 179 (52.49%) Agile Software Development
2 139 (40.76%) Software Engineering
3 112 (32.84%) Full Stack Development
4 111 (32.55%) Unit Testing
5 99 (29.03%) TDD
6 81 (23.75%) OO
7 65 (19.06%) Mentoring
8 61 (17.89%) DevOps
9 60 (17.60%) Microservices
9 60 (17.60%) OOP
10 59 (17.30%) Fintech
11 55 (16.13%) Refactoring
11 55 (16.13%) Test Automation
12 53 (15.54%) Scrum
13 49 (14.37%) SOLID
14 47 (13.78%) Pair Programming
15 41 (12.02%) Clean Code
16 39 (11.44%) MVC
17 37 (10.85%) E-Commerce
18 36 (10.56%) Continuous Integration
Programming Languages
1 171 (50.15%) JavaScript
2 101 (29.62%) PHP
3 84 (24.63%) Java
4 75 (21.99%) C#
5 60 (17.60%) Python
6 52 (15.25%) TypeScript
7 48 (14.08%) SQL
8 29 (8.50%) Scala
9 24 (7.04%) PHP 7
10 22 (6.45%) ES6
10 22 (6.45%) Kotlin
11 15 (4.40%) Java 8
12 11 (3.23%) Java 9
13 10 (2.93%) Java 11
14 7 (2.05%) C++
14 7 (2.05%) Ruby
15 5 (1.47%) Clojure
15 5 (1.47%) Go
16 4 (1.17%) Apple Swift
16 4 (1.17%) Objective-C
Qualifications
1 30 (8.80%) Degree
2 14 (4.11%) Computer Science Degree
3 6 (1.76%) AWS Certification
3 6 (1.76%) MBA
3 6 (1.76%) Security Cleared
4 4 (1.17%) SC Cleared
5 1 (0.29%) DV Cleared
Quality Assurance & Compliance
1 35 (10.26%) QA
2 11 (3.23%) Accessibility
3 7 (2.05%) ISO/IEC 27001
4 1 (0.29%) GDPR
4 1 (0.29%) HIPAA
4 1 (0.29%) SLA
4 1 (0.29%) SOC 2
System Software
1 117 (34.31%) Docker
Systems Management
1 44 (12.90%) Kubernetes
2 31 (9.09%) Terraform
3 22 (6.45%) Graphite
4 21 (6.16%) Opscode Chef
5 14 (4.11%) Prometheus
6 11 (3.23%) Ansible
7 8 (2.35%) Grafana
7 8 (2.35%) Kibana
7 8 (2.35%) logstash
7 8 (2.35%) ZABBIX
8 7 (2.05%) Puppet
9 1 (0.29%) Amdocs OSS
Vendors
1 17 (4.99%) Oracle
2 14 (4.11%) Splunk
3 10 (2.93%) Microsoft
4 6 (1.76%) Google
5 3 (0.88%) Xamarin
5 3 (0.88%) Zend
6 2 (0.59%) Dynatrace
7 1 (0.29%) Amdocs
7 1 (0.29%) Atlassian
7 1 (0.29%) Facebook
7 1 (0.29%) Telerik