 Luby expands its AI Legacy Modernization practice for companies on aging core systemsThe technology consulting firm rebuilds outdated core platforms in regulated sectors like fintech, banking, and insurance, using AI-augmented engineering to modernize systems without disrupting live operations.
By: Luby Many firms in regulated sectors still operate on platforms built a decade or more ago. These systems often work, but they slow down new features, raise maintenance costs, and carry security gaps that are hard to close. Luby's practice focuses on rebuilding this kind of infrastructure while the business keeps running on it. The approach starts with mapping the existing system and its dependencies before any code is replaced. Teams then modernize in stages, often moving from monolithic applications toward modular or microservices architectures, so a client can adopt changes without a single high-risk cutover. Work happens inside the client's own repositories and processes rather than in a separate rebuild. More on the practice is available at https://www.luby.co/ What has changed recently is the role of AI in the work. Luby's engineers use AI tooling across the build cycle to read and document unfamiliar codebases, propose refactors, and generate tests for systems that often lack them. By the firm's own measurement, this lets engineers deliver about twice as fast while holding code quality steady, which matters most on legacy projects where understanding old code is half the effort. The practice is aimed at financial services, banking, insurance, and other regulated industries, where downtime and data handling carry direct consequences. Luby's teams operate in these environments as an AWS Certified Partner, a Google Cloud Partner, and a member of the American Fintech Council. The company was named the 4th fastest-growing in Brazil and the Americas in 2024, 2025, 2026 and served more than 540 clients across the US, Brazil, and Europe. For companies seeking a nearshore technology partner with proven US fintech experience, visit https://www.luby.com.br End
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