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Legacy Modernization
Move fast without breaking what works
We modernise legacy codebases and monolithic architectures incrementally — using the strangler-fig pattern, automated refactoring, and rigorous regression testing to move forward without rewrites that never ship.
What it is
Codebase assessment
Static analysis, dependency graph mapping, and cyclomatic complexity profiling — a clear picture of where the risk and the debt actually lives.
Strangler-fig migration
We carve out bounded contexts and migrate them to modern services one at a time, keeping the legacy system running throughout.
Automated refactoring
AI-assisted large-scale refactors — framework upgrades, language migrations, API contract rationalisation — with regression test suites that verify every step.
Database modernisation
Schema migrations, ORM upgrades, and zero-downtime data migrations using dual-write patterns and careful rollback planning.
Who it's for
Engineering teams running on Rails 3, PHP 5, or a decade-old Node monolith — who need to move to modern infrastructure without a Big Bang rewrite that takes 18 months and ships nothing.
Our approach
System archaeology
We read the code, run the traces, and interview the engineers who built it. You get a complete map of what the system actually does, not what the docs say it does.
Risk-ranked modernisation roadmap
We prioritise by risk, business value, and feasibility — starting with the changes that unblock the most engineering velocity for the least disruption.
Incremental migration
One bounded context at a time. Each migration is gated by a regression suite that runs against both old and new implementations simultaneously.
Knowledge transfer
Your team owns the new system. We run joint working sessions throughout, not just at handoff.
Tech we use
Frontend
Backend
Database
devops
cloud
Sample deliverables
FAQ
Assess my legacy system
Tell us about your project and we'll have a proposal ready within 48 hours.