Legacy System Modernisation in Nottingham

Refactoring keeps your existing codebase and architecture, improving it piece by piece. A full rewrite starts from scratch and carries more risk because you must shut down the old system before the new one is proven. Refactoring lets you run both in parallel, test thoroughly, and flip the switch with confidence. For most legacy systems, refactoring is faster and safer.

We run dual systems during the transition. Data syncs between old and new in real time, so your operations never pause. Once the new system proves stable under load, we switch traffic over gradually. Each step is reversible until you're certain everything works. We keep full audit logs so you can trace any issue back to its source.

Yes. We've mapped and moved systems from legacy databases to PostgreSQL, MySQL, and cloud platforms like AWS RDS and Azure SQL. The challenge isn't the database itself but understanding your data relationships and business rules. We spend time understanding your schema, not just copying rows. That diligence prevents silent data corruption.

It depends on system size and complexity. A medium-sized monolith (50 to 100 services) typically takes 6 to 18 months in phased waves. We don't do big-bang migrations. Instead, we extract one or two services at a time, prove they work in production, then move to the next. You see progress every sprint and can adjust priorities based on business need.

That's common. We reverse-engineer the codebase, interview operators and subject-matter experts, and document what we find. That process itself improves your team's understanding. We then build a knowledge base so future engineers don't rely on one person's memory. The modernisation becomes a chance to capture institutional knowledge before it walks out the door.

Yes. We typically move to a retainer model post-launch. Your team owns the modern system, but we're on call for optimization, security patches, and performance tuning. Most clients use this to stabilize operations while they plan feature work on the new platform. It's a natural transition from project work to ongoing partnership.