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Modernizing Core Systems with Agentic AI Software Factory

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The Challenge

Nacional Financiera (NAFIN), one of Mexico’s most important development banks, required the development of new modules and functionalities for its mission-critical core systems. These systems, largely built in Java, had grown complex over the years and required precise alignment with NAFIN’s defined architectural standards.

The project faced several obstacles:

Complex Legacy Codebase: Large volumes of Java legacy code slowed down integration and innovation.

Tight Deadlines: Business-critical modules had to be delivered within strict release schedules.

Human Error Risks: Manual coding carried risks of defects that could impact sensitive financial operations.

Vendor Lock-In: Reliance on legacy vendors limited flexibility and strategic independence.

NAFIN needed a partner that could accelerate development, reduce risks, and guarantee timely delivery.

The Solution:

Roomie’s Software Factory Enabled by Agentic AI

Roomie deployed its Software Factory service enabled by Agentic AI, leveraging both its CMMI5-certified engineering team and its proprietary Legacy Systems Takeover module.

Legacy Takeover Module:

AI Agents took control of NAFIN’s Java codebase to accelerate the development of new functionalities.

Hybrid Human + AI Approach:

Certified Roomie engineers collaborated with AI agents to ensure code aligned with NAFIN’s architecture and quality standards.

Error Reduction:

AI-powered validation minimized bugs and defects during development.

On-Time Delivery:

Automation accelerated coding cycles, ensuring project milestones were achieved on schedule.

Vendor Independence:

Migration and modernization efforts reduced dependency on legacy vendors, giving NAFIN greater control over its technology.

The ROI & Impact

The hybrid development model delivered clear ROI to NAFIN:

88% Reduction in Coding Errors: AI-driven validation reduced rework and risks in mission-critical systems.

100% On-Time Delivery: All new modules and functionalities were released within strict deadlines.

30% Workforce Optimization: Less dependency on large, specialized teams lowered costs.

Vendor Lock-In Avoidance: NAFIN gained independence from legacy vendors, enabling future flexibility.

Agility Boost: Faster development cycles improved the bank’s ability to respond to business and regulatory needs.

The Takeaway

With Roomie’s Software Factory enabled by Agentic AI, NAFIN successfully accelerated the modernization of its Java-based core systems. The combination of certified engineering expertise and AI-powered automation delivered high-quality code, on-time releases, reduced costs, and long-term strategic freedom.

This project highlights Roomie’s ROI-First approach: fewer errors, faster delivery, optimized resources, and future-proofed technology.