Legacy application modernization, in safe stages
We modernise ageing applications step by step: assess the current system, stabilise it, then migrate modules and data to a modern, containerised architecture — keeping your business running throughout instead of a risky big-bang rewrite.
Systems we modernise
Best for: businesses running on old PHP, .NET or desktop systems that have become hard to change.
Old PHP applications
Upgrading outdated PHP versions and frameworks, or moving modules to a modern stack.
.NET and desktop systems
Moving desktop or on-premise .NET software to secure web applications.
Monolith to services
Splitting a hard-to-change monolith into well-defined services where it pays off.
Database migration
Moving data to PostgreSQL or the cloud with validation and zero data loss.
Cloud migration
Moving from ageing servers to containers on AWS or other cloud providers.
Stabilisation
Fixing the most painful bugs, security gaps and performance issues first.
Everything you need to launch
Delivered end to end by senior engineers, with weekly demos and written updates. You own the code once the project is paid in full.
- Code, infrastructure and security assessment
- Prioritised modernisation roadmap
- Automated tests around critical behaviour
- Incremental module migration (strangler pattern)
- Data migration with validation
- Containerisation and CI/CD
- Zero-downtime cutover plan
- Documentation for your team
From first call to launch
- 01
Assess
Review code, data, infrastructure and risks; document what must not break.
- 02
Stabilise
Add tests and monitoring, fix critical issues and security gaps.
- 03
Migrate
Replace one module at a time behind the scenes, with data migrated and verified.
- 04
Retire
Switch traffic over, decommission old components and hand over runbooks.
Tools we use
Mature, well-supported technology your team can hire for and maintain. See our full technology stack.
- Node.js
- TypeScript
- Python
- Go
- PostgreSQL
- Docker
- Kubernetes
- AWS
- GitHub Actions
Typical timeline
| Focused first version | 6–8 weeks |
|---|---|
| Growth-scale platform | 8–11 weeks |
| Enterprise scale | 10–14 weeks |
Starting ranges; your exact plan depends on scope and integrations. Try the project estimator or read how pricing works.
Frequently asked questions
Should we rewrite our system from scratch?
Usually not. Full rewrites are slow and risky because the old system keeps changing and hidden business rules get lost. Replacing it module by module lets you get value early and reduce risk.
Will our business be interrupted during modernisation?
We plan for zero downtime: the old and new systems run side by side, traffic moves over gradually, and every step has a rollback plan.
Can you work with code nobody on our team understands?
Yes. We start by documenting how the system behaves, add tests around critical workflows and only then change it.
How long does legacy modernisation take?
The first modernised module typically takes 6–8 weeks. Larger programmes run in phases, prioritised by business value and risk.
Often combined with
Cloud & 24/7 Support
Software maintenance and cloud support with agreed response times: monitoring, security patching, backups, DevOps and ongoing improvements.
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SaaS product development from MVP to scale: multi-tenant architecture, subscription billing, dashboards and APIs. Senior engineers; you own the code.
Learn more →Planning a legacy modernization project?
Tell us what you're building. An engineer replies within 24 hours with questions and a time to talk.