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 28 December 2025, comparing them to the same period in the previous two years.

6 months to
28 Dec 2025
Same period 2024 Same period 2023
Rank 191 312 364
Rank change year-on-year +121 +52 +11
Permanent jobs citing Legacy Systems 193 124 82
As % of all permanent jobs in London 1.41% 0.78% 0.46%
As % of the Miscellaneous category 3.34% 1.80% 1.13%
Number of salaries quoted 90 69 78
10th Percentile £52,490 £38,750 £49,250
25th Percentile £56,250 £43,125 £62,813
Median annual salary (50th Percentile) £75,000 £60,000 £79,500
Median % change year-on-year +25.00% -24.53% -3.64%
75th Percentile £94,688 £102,500 £90,000
90th Percentile £115,250 £134,000 £105,375
England median annual salary £67,500 £51,500 £60,000
% change year-on-year +31.07% -14.17% -17.24%

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 5,773 6,907 7,233
As % of all permanent jobs advertised in London 42.04% 43.54% 40.48%
Number of salaries quoted 3,415 3,714 5,496
10th Percentile £35,750 £43,750 £40,000
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 £100,000 £106,250 £101,250
90th Percentile £126,250 £127,500 £125,000
England median annual salary £55,000 £60,000 £60,000
% change year-on-year -8.33% - -7.69%

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 28 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 28 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 +52 26 £65,000 +2.36% 61
West London -4 3 - - 3
South London +26 2 £48,975 -60.82% 6
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 7 (3.63%) Appian
1 7 (3.63%) SharePoint
2 4 (2.07%) Apache
2 4 (2.07%) Apache Airflow
3 3 (1.55%) Microsoft Exchange
4 2 (1.04%) Apache Spark
4 2 (1.04%) Confluence
5 1 (0.52%) Apache Synapse
5 1 (0.52%) nginx
5 1 (0.52%) SAS
Applications
1 8 (4.15%) Microsoft Office
2 3 (1.55%) Microsoft Excel
3 1 (0.52%) Microsoft PowerPoint
Business Applications
1 2 (1.04%) Aladdin
1 2 (1.04%) Dynamics CRM
Cloud Services
1 51 (26.42%) Azure
2 38 (19.69%) AWS
3 26 (13.47%) Amazon Bedrock
3 26 (13.47%) Vertex AI
4 14 (7.25%) Azure DevOps
5 13 (6.74%) SaaS
6 11 (5.70%) Power Platform
7 8 (4.15%) Azure Data Factory
7 8 (4.15%) Microsoft 365
7 8 (4.15%) Power Automate
8 7 (3.63%) Anthropic Claude
8 7 (3.63%) Azure AI
8 7 (3.63%) GitHub
9 6 (3.11%) ChatGPT
9 6 (3.11%) GitHub Copilot
10 4 (2.07%) Entra ID
10 4 (2.07%) GCP
11 3 (1.55%) Amazon SQS
11 3 (1.55%) IaaS
11 3 (1.55%) PaaS
Communications & Networking
1 6 (3.11%) Firewall
2 4 (2.07%) WAN
3 3 (1.55%) LAN
3 3 (1.55%) SD-WAN
3 3 (1.55%) Wi-Fi
4 2 (1.04%) Extranet
4 2 (1.04%) Intranet
4 2 (1.04%) SAN
4 2 (1.04%) 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%) PSTN
5 1 (0.52%) Unified Communications
5 1 (0.52%) VoIP
5 1 (0.52%) VPN
Database & Business Intelligence
1 73 (37.82%) SQL Server
2 44 (22.80%) MySQL
3 11 (5.70%) SQL Server Integration Services
4 10 (5.18%) Power BI
5 7 (3.63%) Pinecone
6 6 (3.11%) Relational Database
7 4 (2.07%) Metadata
8 2 (1.04%) Azure SQL Database
8 2 (1.04%) BigQuery
8 2 (1.04%) Data Vault
8 2 (1.04%) Oracle Database
8 2 (1.04%) PostgreSQL
8 2 (1.04%) Snowflake Schema
9 1 (0.52%) Big Data
9 1 (0.52%) Data Mining
9 1 (0.52%) Data Warehouse
9 1 (0.52%) NoSQL
9 1 (0.52%) SQL Server Analysis Services
9 1 (0.52%) SQL Server Reporting Services
9 1 (0.52%) Tableau
Development Applications
1 11 (5.70%) ERwin
1 11 (5.70%) Octopus Deploy
2 9 (4.66%) TeamCity
3 7 (3.63%) MLflow
4 4 (2.07%) Git
4 4 (2.07%) Jenkins
4 4 (2.07%) JIRA
5 2 (1.04%) Artifactory
5 2 (1.04%) GitLab
5 2 (1.04%) Synon
6 1 (0.52%) Cucumber
6 1 (0.52%) JMeter
6 1 (0.52%) JUnit
6 1 (0.52%) LoadRunner
6 1 (0.52%) Selenium
6 1 (0.52%) Storybook
6 1 (0.52%) Vite
General
1 86 (44.56%) Social Skills
2 48 (24.87%) Finance
3 40 (20.73%) Analytical Skills
4 12 (6.22%) Banking
5 10 (5.18%) Legal
6 9 (4.66%) Inclusion and Diversity
7 8 (4.15%) Investment Banking
8 6 (3.11%) Law
9 3 (1.55%) Public Sector
9 3 (1.55%) Retail
10 2 (1.04%) Back Office
10 2 (1.04%) 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 (36.27%) Consultant
2 41 (21.24%) Senior
3 30 (15.54%) Architect
4 26 (13.47%) Gen AI Consultant
4 26 (13.47%) Senior Consultant
5 20 (10.36%) Lead
6 19 (9.84%) Developer
7 13 (6.74%) Data Architect
8 11 (5.70%) Lead Architect
8 11 (5.70%) Lead Data Architect
9 10 (5.18%) Analyst
10 9 (4.66%) DevOps Engineer
11 7 (3.63%) Artificial Intelligence Engineer
11 7 (3.63%) Automation Engineer
11 7 (3.63%) Business Analyst
11 7 (3.63%) CRM Manager
11 7 (3.63%) Enterprise Architect
11 7 (3.63%) Platform Manager
11 7 (3.63%) Senior Developer
12 6 (3.11%) Artificial Intelligence Developer
Libraries, Frameworks & Software Standards
1 26 (13.47%) LangChain
2 20 (10.36%) REST
3 16 (8.29%) .NET
4 12 (6.22%) Pandas
4 12 (6.22%) Web Services
5 10 (5.18%) RESTful
6 9 (4.66%) Django
6 9 (4.66%) NumPy
6 9 (4.66%) OpenAPI
6 9 (4.66%) scikit-learn
6 9 (4.66%) Swagger
7 8 (4.15%) FastAPI
7 8 (4.15%) Flask
7 8 (4.15%) Hugging Face
7 8 (4.15%) pytest
7 8 (4.15%) PyTorch
7 8 (4.15%) TensorFlow
8 7 (3.63%) Faiss
8 7 (3.63%) JWT
8 7 (3.63%) OAuth
Miscellaneous
1 19 (9.84%) Data Structures
2 17 (8.81%) Cloud Native
3 10 (5.18%) Virtual Team
4 9 (4.66%) Hybrid Cloud
4 9 (4.66%) Management Information System
5 7 (3.63%) Low-Code
6 5 (2.59%) Product Ownership
7 4 (2.07%) Analytical Mindset
7 4 (2.07%) Distributed Architecture
8 3 (1.55%) Cyber Threat
8 3 (1.55%) Enterprise Software
9 2 (1.04%) CMDB
9 2 (1.04%) Legacy Applications
9 2 (1.04%) Onboarding
9 2 (1.04%) Shadow IT
10 1 (0.52%) Credit Risk
10 1 (0.52%) Data Protection Act
10 1 (0.52%) Distributed Systems
10 1 (0.52%) Market Risk
10 1 (0.52%) Video Conferencing
Operating Systems
1 5 (2.59%) Windows
2 3 (1.55%) Windows Server
3 2 (1.04%) VMS
4 1 (0.52%) Linux
4 1 (0.52%) Windows Server 2012
Processes & Methodologies
1 55 (28.50%) AI
2 53 (27.46%) Stakeholder Management
3 51 (26.42%) OO
4 46 (23.83%) Agile
5 44 (22.80%) Migration
5 44 (22.80%) OOP
6 40 (20.73%) Machine Learning
7 38 (19.69%) Thought Leadership
8 36 (18.65%) CI/CD
9 35 (18.13%) LLM
10 34 (17.62%) Prompt Engineering
11 33 (17.10%) DevOps
11 33 (17.10%) Generative AI
11 33 (17.10%) MLOps
11 33 (17.10%) Retrieval-Augmented Generation
12 32 (16.58%) Computer Science
12 32 (16.58%) IT Strategy
13 29 (15.03%) Roadmaps
14 26 (13.47%) Data Modelling
15 25 (12.95%) Business Development
Programming Languages
1 45 (23.32%) Delphi
2 44 (22.80%) Pascal
3 32 (16.58%) SQL
4 23 (11.92%) Python
5 15 (7.77%) PowerShell
6 9 (4.66%) Java
7 7 (3.63%) C#
8 6 (3.11%) JavaScript
9 4 (2.07%) PHP
10 2 (1.04%) Bicep
10 2 (1.04%) PL/SQL
10 2 (1.04%) RPG
10 2 (1.04%) TypeScript
11 1 (0.52%) Bash
11 1 (0.52%) C++
11 1 (0.52%) Data Analysis Expressions
11 1 (0.52%) Go
11 1 (0.52%) Rust
11 1 (0.52%) Scala
11 1 (0.52%) VBScript
Qualifications
1 38 (19.69%) Degree
2 30 (15.54%) Computer Science Degree
3 4 (2.07%) Azure Certification
4 2 (1.04%) Microsoft Certification
4 2 (1.04%) SC Cleared
4 2 (1.04%) Security Cleared
4 2 (1.04%) TOGAF Certification
5 1 (0.52%) CCNP
5 1 (0.52%) Cisco Certification
5 1 (0.52%) Master's Degree
5 1 (0.52%) MCITP
5 1 (0.52%) MCSA
5 1 (0.52%) PhD
Quality Assurance & Compliance
1 47 (24.35%) QA
2 12 (6.22%) GDPR
3 10 (5.18%) Data Quality
4 5 (2.59%) ISO/IEC 27001
5 4 (2.07%) Accessibility
6 3 (1.55%) COBIT
7 1 (0.52%) Actionable Recommendations
7 1 (0.52%) Cyber Essentials
7 1 (0.52%) Cyber Essentials PLUS
7 1 (0.52%) NIST
System Software
1 15 (7.77%) 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 19 (9.84%) Kubernetes
2 16 (8.29%) Terraform
3 3 (1.55%) Microsoft Intune
4 2 (1.04%) Grafana
5 1 (0.52%) Ansible
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%) Prometheus
5 1 (0.52%) SCOM
5 1 (0.52%) vCenter Server
5 1 (0.52%) ZABBIX
Vendors
1 52 (26.94%) Oracle
2 38 (19.69%) Microsoft
3 27 (13.99%) Google
4 11 (5.70%) Salesforce
5 8 (4.15%) OpenAI
6 7 (3.63%) Automation Anywhere
6 7 (3.63%) UiPath
7 5 (2.59%) Cisco
7 5 (2.59%) VMware
8 4 (2.07%) Citrix
9 3 (1.55%) AppDynamics
9 3 (1.55%) Databricks
9 3 (1.55%) ServiceNow
10 2 (1.04%) BiZZdesign
10 2 (1.04%) IBM
10 2 (1.04%) Meraki
10 2 (1.04%) MuleSoft
10 2 (1.04%) New Relic
10 2 (1.04%) SolarWinds
10 2 (1.04%) Workday