Legacy Systems Job Trends in London

Legacy System
England > London

The table below looks at the prevalence of the term Legacy Systems in permanent job vacancies in London. Included is a benchmarking guide to the salaries offered in vacancies that cited Legacy Systems over the 6 months leading up to 3 December 2025, comparing them to the same period in the previous two years.

6 months to
3 Dec 2025
Same period 2024 Same period 2023
Rank 203 329 350
Rank change year-on-year +126 +21 +40
Permanent jobs citing Legacy Systems 194 111 96
As % of all permanent jobs in London 1.47% 0.65% 0.52%
As % of the Miscellaneous category 3.33% 1.52% 1.29%
Number of salaries quoted 90 74 90
10th Percentile £52,490 £39,125 £50,000
25th Percentile £56,250 £43,358 £62,500
Median annual salary (50th Percentile) £77,500 £63,000 £79,500
Median % change year-on-year +23.02% -20.75% -6.47%
75th Percentile £94,688 £120,000 £90,000
90th Percentile £115,000 £142,500 £100,375
England median annual salary £67,500 £52,500 £65,000
% change year-on-year +28.57% -19.23% -10.34%

All Generic Skills
London

Legacy Systems falls under the General and Transferable Skills category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring generic IT skills in London.

Permanent vacancies with a requirement for generic IT skills 5,834 7,285 7,443
As % of all permanent jobs advertised in London 44.13% 42.85% 40.59%
Number of salaries quoted 3,421 4,065 5,805
10th Percentile £35,750 £45,000 £40,500
25th Percentile £50,000 £56,250 £56,250
Median annual salary (50th Percentile) £75,000 £80,000 £80,000
Median % change year-on-year -6.25% - +6.67%
75th Percentile £101,250 £108,750 £100,000
90th Percentile £130,000 £130,000 £128,250
England median annual salary £55,000 £60,000 £62,500
% change year-on-year -8.33% -4.00% -3.85%

Legacy Systems
Job Vacancy Trend in London

Historical trend showing the proportion of permanent IT job postings citing Legacy Systems relative to all permanent IT jobs advertised in London.

Legacy Systems job vacancy trend in London

Legacy Systems
Salary Trend in London

Salary distribution trend for jobs in London citing Legacy Systems.

Salary distribution trend for jobs in London citing Legacy Systems

Legacy Systems
Salary Histogram in London

Salary distribution for jobs citing Legacy Systems in London over the 6 months to 3 December 2025.

Salary histogram for Legacy Systems in London

Legacy Systems
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 Systems within the London region over the 6 months to 3 December 2025. 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
Jobs
Central London +57 22 £66,250 -17.19% 8
West London +5 4 - - 3
South London +29 2 £55,200 -55.84% 1
Legacy Systems
England

Legacy Systems
Co-Occurring Skills & Capabilities in London by Category

The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category:

Application Platforms
1 8 (4.12%) Apache
1 8 (4.12%) Apache Airflow
2 7 (3.61%) SharePoint
3 5 (2.58%) Apache Spark
4 4 (2.06%) Apache Synapse
4 4 (2.06%) Appian
5 3 (1.55%) Microsoft Exchange
6 2 (1.03%) Confluence
7 1 (0.52%) nginx
7 1 (0.52%) SAS
Applications
1 9 (4.64%) Microsoft Office
2 4 (2.06%) Microsoft Excel
3 2 (1.03%) Microsoft PowerPoint
Business Applications
1 2 (1.03%) Dynamics CRM
1 2 (1.03%) SAP S/4HANA
2 1 (0.52%) Aladdin
2 1 (0.52%) NetSuite
2 1 (0.52%) SAP MDG
Cloud Services
1 49 (25.26%) Azure
2 46 (23.71%) AWS
3 25 (12.89%) Amazon Bedrock
3 25 (12.89%) Vertex AI
4 13 (6.70%) SaaS
5 11 (5.67%) Azure DevOps
5 11 (5.67%) Power Platform
6 8 (4.12%) Microsoft 365
7 7 (3.61%) GCP
7 7 (3.61%) GitHub
8 6 (3.09%) ChatGPT
8 6 (3.09%) GitHub Copilot
8 6 (3.09%) Power Automate
9 5 (2.58%) Azure Data Factory
9 5 (2.58%) Azure Synapse Analytics
9 5 (2.58%) Snowflake
10 4 (2.06%) Amazon Kinesis
10 4 (2.06%) Amazon SQS
10 4 (2.06%) Entra ID
10 4 (2.06%) Stackdriver
Communications & Networking
1 6 (3.09%) Firewall
2 4 (2.06%) WAN
3 3 (1.55%) Intranet
3 3 (1.55%) LAN
3 3 (1.55%) SD-WAN
3 3 (1.55%) Wi-Fi
4 2 (1.03%) Extranet
4 2 (1.03%) SAN
4 2 (1.03%) TCP/IP
5 1 (0.52%) DHCP
5 1 (0.52%) DNS
5 1 (0.52%) Fibre Channel
5 1 (0.52%) iSCSI
5 1 (0.52%) NAS
5 1 (0.52%) Network Security
5 1 (0.52%) PSTN
5 1 (0.52%) Unified Communications
5 1 (0.52%) VoIP
5 1 (0.52%) VPN
Database & Business Intelligence
1 67 (34.54%) SQL Server
2 44 (22.68%) MySQL
3 9 (4.64%) Power BI
4 8 (4.12%) SQL Server Integration Services
5 7 (3.61%) Relational Database
6 5 (2.58%) BigQuery
7 4 (2.06%) Amazon Redshift
7 4 (2.06%) Big Data
7 4 (2.06%) Data Mining
7 4 (2.06%) NoSQL
7 4 (2.06%) Pinecone
8 3 (1.55%) Metadata
8 3 (1.55%) PostgreSQL
9 2 (1.03%) Azure SQL Database
9 2 (1.03%) Data Vault
9 2 (1.03%) Oracle Database
9 2 (1.03%) Snowflake Schema
10 1 (0.52%) Delta Lake
10 1 (0.52%) PostHog
10 1 (0.52%) SAP Data Services
Development Applications
1 11 (5.67%) ERwin
2 8 (4.12%) Jenkins
2 8 (4.12%) Octopus Deploy
3 6 (3.09%) TeamCity
4 4 (2.06%) Git
4 4 (2.06%) JIRA
4 4 (2.06%) MLflow
5 3 (1.55%) GitLab
6 2 (1.03%) Artifactory
6 2 (1.03%) JUnit
6 2 (1.03%) Synon
7 1 (0.52%) Cucumber
7 1 (0.52%) JMeter
7 1 (0.52%) Mockito
7 1 (0.52%) Selenium
7 1 (0.52%) Vite
General
1 87 (44.85%) Social Skills
2 48 (24.74%) Analytical Skills
3 41 (21.13%) Finance
4 12 (6.19%) Banking
5 9 (4.64%) Investment Banking
5 9 (4.64%) Legal
6 8 (4.12%) Inclusion and Diversity
7 6 (3.09%) Law
8 5 (2.58%) Public Sector
9 3 (1.55%) Retail
10 2 (1.03%) Back Office
10 2 (1.03%) Documentation Skills
10 2 (1.03%) Music Industry
11 1 (0.52%) Front Office
11 1 (0.52%) Health Technology
11 1 (0.52%) Influencing Skills
11 1 (0.52%) International Banking
11 1 (0.52%) Mandarin Language
11 1 (0.52%) Marketing
Job Titles
1 70 (36.08%) Consultant
2 42 (21.65%) Senior
3 32 (16.49%) Architect
4 26 (13.40%) Developer
5 25 (12.89%) Gen AI Consultant
5 25 (12.89%) Senior Consultant
6 24 (12.37%) Lead
7 13 (6.70%) Data Architect
8 11 (5.67%) Lead Architect
8 11 (5.67%) Lead Data Architect
9 9 (4.64%) Senior Developer
10 8 (4.12%) Analyst
10 8 (4.12%) CRM Manager
10 8 (4.12%) Platform Manager
11 7 (3.61%) Enterprise Architect
11 7 (3.61%) Lead Developer
11 7 (3.61%) Solutions Architect
12 6 (3.09%) Artificial Intelligence Developer
12 6 (3.09%) DevOps Engineer
13 5 (2.58%) Applications Engineer
Libraries, Frameworks & Software Standards
1 25 (12.89%) LangChain
2 18 (9.28%) REST
3 12 (6.19%) .NET
4 10 (5.15%) Pandas
5 9 (4.64%) Kafka
5 9 (4.64%) Web Services
6 8 (4.12%) RESTful
7 7 (3.61%) Laravel
8 6 (3.09%) Django
8 6 (3.09%) NumPy
8 6 (3.09%) OpenAPI
8 6 (3.09%) scikit-learn
8 6 (3.09%) Spring
8 6 (3.09%) Spring Boot
8 6 (3.09%) Swagger
9 5 (2.58%) FastAPI
9 5 (2.58%) Hibernate
9 5 (2.58%) Hugging Face
9 5 (2.58%) PyTorch
9 5 (2.58%) Tailwind CSS
Miscellaneous
1 20 (10.31%) Data Structures
2 18 (9.28%) Cloud Native
3 10 (5.15%) Management Information System
4 7 (3.61%) Virtual Team
5 6 (3.09%) Hybrid Cloud
6 5 (2.58%) Analytical Mindset
6 5 (2.58%) Low-Code
7 4 (2.06%) Distributed Architecture
7 4 (2.06%) Enterprise Software
7 4 (2.06%) Product Ownership
8 3 (1.55%) e-Learning
8 3 (1.55%) Onboarding
9 2 (1.03%) CMDB
9 2 (1.03%) Cyber Threat
9 2 (1.03%) Legacy Applications
9 2 (1.03%) Shadow IT
10 1 (0.52%) Algorithms
10 1 (0.52%) Data Centre
10 1 (0.52%) Data Protection Act
10 1 (0.52%) Self-Motivation
Operating Systems
1 5 (2.58%) Windows
2 3 (1.55%) Windows Server
3 2 (1.03%) VMS
4 1 (0.52%) Linux
4 1 (0.52%) Windows Server 2012
Processes & Methodologies
1 49 (25.26%) Migration
2 48 (24.74%) AI
2 48 (24.74%) OO
2 48 (24.74%) Stakeholder Management
3 45 (23.20%) Agile
4 44 (22.68%) OOP
5 38 (19.59%) Thought Leadership
6 37 (19.07%) CI/CD
7 36 (18.56%) Machine Learning
8 32 (16.49%) Computer Science
8 32 (16.49%) IT Strategy
9 31 (15.98%) LLM
10 30 (15.46%) DevOps
10 30 (15.46%) Prompt Engineering
11 29 (14.95%) Generative AI
11 29 (14.95%) MLOps
11 29 (14.95%) Retrieval-Augmented Generation
11 29 (14.95%) Roadmaps
12 26 (13.40%) Business Development
13 24 (12.37%) Data Modelling
Programming Languages
1 45 (23.20%) Delphi
2 44 (22.68%) Pascal
3 30 (15.46%) SQL
4 21 (10.82%) Python
5 12 (6.19%) PowerShell
6 11 (5.67%) Java
7 10 (5.15%) PHP
8 8 (4.12%) JavaScript
9 6 (3.09%) C#
10 2 (1.03%) Bicep
10 2 (1.03%) PL/SQL
10 2 (1.03%) RPG
10 2 (1.03%) Shell Script
10 2 (1.03%) TypeScript
11 1 (0.52%) Bash
11 1 (0.52%) Data Analysis Expressions
11 1 (0.52%) Elixir
11 1 (0.52%) Go
11 1 (0.52%) R
11 1 (0.52%) Scala
Qualifications
1 38 (19.59%) Degree
2 30 (15.46%) Computer Science Degree
3 4 (2.06%) Azure Certification
4 3 (1.55%) Security Cleared
5 2 (1.03%) Cisco Certification
5 2 (1.03%) Microsoft Certification
5 2 (1.03%) SC Cleared
5 2 (1.03%) TOGAF Certification
6 1 (0.52%) (ISC)2 CCSP
6 1 (0.52%) ACCA
6 1 (0.52%) CCNP
6 1 (0.52%) CCSP
6 1 (0.52%) CISA
6 1 (0.52%) Master's Degree
6 1 (0.52%) MCITP
6 1 (0.52%) MCSA
6 1 (0.52%) PhD
6 1 (0.52%) SAP Certification
Quality Assurance & Compliance
1 47 (24.23%) QA
2 12 (6.19%) GDPR
3 7 (3.61%) Data Quality
4 4 (2.06%) ISO/IEC 27001
5 3 (1.55%) Accessibility
6 2 (1.03%) COBIT
7 1 (0.52%) Cyber Essentials
7 1 (0.52%) Cyber Essentials PLUS
7 1 (0.52%) NIST
System Software
1 14 (7.22%) Docker
2 3 (1.55%) Active Directory
2 3 (1.55%) VMware ESXi
2 3 (1.55%) VMware Infrastructure
3 1 (0.52%) Hyper-V
3 1 (0.52%) Virtual Desktop
3 1 (0.52%) VMware Server
3 1 (0.52%) vSphere
Systems Management
1 18 (9.28%) Kubernetes
2 15 (7.73%) Terraform
3 3 (1.55%) Microsoft Intune
4 2 (1.03%) Ansible
4 2 (1.03%) Grafana
4 2 (1.03%) Prometheus
5 1 (0.52%) Backup Exec
5 1 (0.52%) Cisco CUCM
5 1 (0.52%) FortiGate
5 1 (0.52%) Kibana
5 1 (0.52%) SCOM
5 1 (0.52%) vCenter Server
5 1 (0.52%) ZABBIX
Vendors
1 53 (27.32%) Oracle
2 40 (20.62%) Microsoft
3 26 (13.40%) Google
4 12 (6.19%) Salesforce
5 6 (3.09%) Databricks
6 5 (2.58%) Cisco
6 5 (2.58%) OpenAI
6 5 (2.58%) VMware
7 4 (2.06%) Automation Anywhere
7 4 (2.06%) Citrix
7 4 (2.06%) UiPath
8 3 (1.55%) SAP
8 3 (1.55%) Workday
9 2 (1.03%) AppDynamics
9 2 (1.03%) IBM
9 2 (1.03%) Meraki
9 2 (1.03%) MuleSoft
9 2 (1.03%) New Relic
9 2 (1.03%) ServiceNow
9 2 (1.03%) SolarWinds