Architecture & Legacy Modernisation
Change the system without stopping the business
DanixSoft reviews and modernises legacy software in phases — an architecture review, a written plan of what changes and in what order, then incremental delivery — so a business can replace an ageing system without pausing revenue.
Some systems cannot be paused for a rewrite. We review what you have, write down what should change and in what order, and then modernise it in phases — so revenue keeps flowing while the platform improves underneath.
What's included?
Everything you need to ship a production-grade solution.
Architecture Reviews & Audits
A written assessment of your codebase and infrastructure covering scalability, security, maintainability, and cost, with a prioritised roadmap.
Legacy Modernisation
Phased migration of monolithic PHP, .NET, or older Node/Python systems to modern, maintainable architectures.
Cloud Migration
Moving on-premise or legacy cloud setups to containerised deployments with infrastructure as code.
Service Decomposition
Splitting monoliths only where independent deployment pays for its complexity.
Database Architecture
Schema redesign, read replicas, indexing, and zero-downtime migration planning.
Fractional CTO
Part-time senior technical leadership for startups that need architecture and hiring decisions made well.
How does a project run?
Transparent, milestone-driven delivery from day one.
System Discovery
A deep dive into your code, infrastructure, team, and constraints, ending in a written findings report.
Architecture Blueprint
Target architecture: system diagrams, data flow, API contracts, and infrastructure-as-code templates.
Phased Migration Plan
A sequenced plan that keeps the business running during the transition — no big-bang rewrite.
Implementation
Our engineers execute the plan with weekly progress reviews against the roadmap.
Knowledge Transfer
Runbooks, architecture decision records, and handover sessions so your team can own the result.
Which technologies do we use?
Battle-tested tools we rely on to deliver.
How much does it cost?
Scale / Enterprise: ~$30k–$60k+
Typically 3–6 months, often phased
A standalone architecture audit can be scoped on its own. Fractional CTO engagements start from $2,000/month.
Typical starting points, not quotes. Final pricing depends on scope and is fixed in writing after a discovery call.
See all pricing tiersFrequently Asked Questions
Common questions about this service.
How long does a legacy migration take?
A focused API modernisation usually takes a few months; a full platform rebuild takes longer. We de-risk either with a phased plan so value ships along the way.
Can you audit our code without taking over the project?
Yes. A standalone audit gives you a written report you can act on yourself or use to inform hiring.
Do you offer fractional CTO services?
Yes. For early-stage teams that need senior technical leadership part-time, fractional CTO engagements start from $2,000/month and cover architecture, hiring, code standards, and vendor selection.
Where to Next
Services teams usually pair with this one.
Further reading: Backend Development articles on the DanixSoft blog
Industries we build this for
Next step
Tell us what you are building.
A free 30-minute discovery call, then a written scope and a fixed-price quote — before you commit to anything.