Case Studies
Legacy Modernization of a Decades-Old Microsoft Access Database and Banking Application
Learn how legacy system migration can transform outdated Microsoft Access Database and applications for improved performance and future readiness.
Client Overview
A privately held, multi-generational real estate investment, development firm.
Challenge
When a high-end real estate company needed to replace its 20-year-old Microsoft Access-based private banking application, they needed a strategic partner who understood complex financial systems, accounting workflows, and the stakes of business-critical software.
Tevpro was selected to re-architect and modernize the company’s private banking platform into a secure, scalable, and cloud-ready web application built for the next generation.
The original application, developed in Microsoft Access, handled everything from internal accounting to private banking workflows. Over time, it became unstable, unsupported, and dangerously outdated.
Challenges of Legacy Software:
- No access to the original developers
- No design documentation available
- Disjointed databases for Savings and Trust accounts
- Manual reconciliation with duplicated data entry
- Limited access for remote work or multi-user collaboration
And perhaps most critically: the application contained complex financial logic for interest calculations, period-end closings, and financial modeling, making a direct migration impossible.
Solution
Tevpro was brought in to re-platform and re-engineer the entire system from scratch and transform a fragile Access-based application into a robust, cloud-native, modern web app.
Reverse Engineering with a Purpose
With no technical documentation to start from, our development team reverse-engineered the system using a copy of the legacy database. From there, we:
- Rewrote custom VB code into TypeScript
- Re-architected Access tables into SQL Server
- Rebuilt queries, forms, and reports with a modern tech stack
The New Tech Stack
To ensure long-term scalability and support, Tevpro built the app using:
- TypeScript + Node.js
- NestJS for backend architecture
- Angular + Bootstrap for front-end UI
- Prisma ORM for efficient database access
- SQL Server as the core relational database
This modern stack supports cloud deployment, multi-device access, and agile updates.
Results
Tevpro delivered one unified system, built for the future. Previously, users had to enter transactions separately in multiple Micrsoft Access databases. Tevpro unified the system into a single source of truth, combining all data for Trust and Savings accounts under one roof.
Key Benefits:
- Automated interest calculations with smart validation
- Locked-down accounting periods post month-end close
- Audit-friendly reporting and traceability
- Real-time collaboration for accounting and finance teams
- Significantly reduced human error and redundancy
By implementing cloud-based legacy software modernization, we gave the company more than just a new application—we gave them operational freedom.
Is Your Legacy System Holding You Back?
Still running business-critical software on Microsoft Access or another outdated platform? Whether it’s a private banking system, internal accounting tool, or any custom-built application, legacy system migration to the cloud could be the single best investment your company makes this year.
Tevpro specializes in re-architecting legacy systems and transforming them into cloud-ready platforms that scale with your business.
Why work with us
Why Tevpro?
Whether you’re a startup with a bold product idea or an established company seeking a stronger delivery partner, Tevpro delivers results. Our expert consultants specialize in building secure, scalable applications that simplify operations and drive real ROI.
Client Testimonial
“Their team understood our processes, eliminated years of inefficiencies, and delivered a solution that will support us well into the future.”