Code Modernization
Legacy systems, moved forward.
What it is
AI-assisted modernization of legacy codebases — migration, technical debt reduction, and adding AI capability to systems that predate it.
Who it's for
Organizations carrying legacy systems that block progress but cannot justify a rebuild from scratch.
What we deliver
Four phases, no surprises.
Discovery
We map your workflows, identify what is worth doing, define success metrics, and audit what we will be working with. No assumptions.
Design
We design the approach in full — including model selection, integrations, and controls — before a line of code is written.
Delivery
We build with regular demos and continuous feedback. You see progress, you give input, we adjust.
Handover
Documentation, training, and a clean handover to your team — with ongoing support available if you want it.
Every engagement is scoped to your situation, so timelines and investment depend on what you actually need. We will tell you honestly what we think makes sense — including when a smaller scope is the right answer.
Frequently Asked Questions
What is AI-assisted code modernization?
AI-assisted code modernization uses language models to accelerate the migration and refactoring of legacy codebases — reading unfamiliar code, generating tests, and drafting migrations that engineers review. Nisco AI Systems delivers this as codebase assessment and triage, migration, framework and dependency upgrades, test coverage, and incremental delivery.
Do you have to rebuild the whole system?
No, and Nisco AI Systems generally advises against it. Modernization is delivered incrementally against a system that keeps working throughout, targeting the parts that actually block progress. Full rewrites carry risk that most organizations do not need to take on.
What if nobody on our team understands the legacy code any more?
That is a common starting point and it is one of the areas where AI-assisted work helps most. Nisco AI Systems begins with a codebase assessment that documents what the system currently does, which is often the first accurate description a client has had in years.
Talk to an Anthropic-credentialed team.
30 minutes, no sales pitch. Bring the problem, not a feature list.