endorsedOngoing

Legacy Finance App Modernization & .NET 6 Migration

Services Covered:

Custom Software Development • IT Consulting

Industry

Information Technology

Duration

17 months

Budget

50K - 199K

Start Date

1 March 2025

Team Size

1-5 Employees

Engagement Model

Offshore

Project Capability Score (PCS)

80/100

Strong

Project Capability Score (PCS) estimates how capable Techstack Ltd is of successfully delivering a project like this, based on its past experience, track record, and ability to handle similar work. Learn more about PCS

Client

Confidential

New York City, United States of America

Project Summary

Techstack modernized a legacy finance application for a technology consultancy by proposing a phased modernization approach, introducing data flow management, and transitioning system components toward .NET 6. The work improved performance for complex financial reports, reduced maintenance time through modular components, and lowered operational costs. The team worked closely with the client's internal developers and communicated frequently throughout the engagement.

Key Challenges

Modernize a legacy finance application that had grown overly complex
Shift to a modular, component-oriented structure to enable scalability and easier maintenance
Provide a foundation that supports better decision-making and future flexibility

Project Deliverables

Step-by-step modernization plan and system review
Migration/transition to .NET 6-compatible architecture
Multi-tenant architecture supporting multiple contexts
Data flow management and improved financial planning tools
Collaboration and compatibility work with internal developers

Project Solution

Techstack reviewed the existing system to identify dependencies and bottlenecks, then proposed and implemented a step-by-step modernization that minimized risk. They implemented a new multi-tenant architecture, introduced smarter data flow management, improved financial planning tools, and ensured compatibility with older .NET framework components while transitioning to .NET 6 in collaboration with the client's internal developers.

Project Outcome

Performance increased noticeably for complex financial reports and simulations
Maintenance time decreased because modular components can be updated without affecting other parts of the system
Operational costs were reduced due to targeted updates rather than full rebuilds

Platforms

SaaS

Tech Stack

.NET Core

Client Endorsement

Overall Review Rating

Timeliness

Cost Rating

Willing to Refer

Quality of Deliverables

“Techstack company has delivered measurable improvements within the first few months. The team has approached the work with real ownership, checked in frequently, raised potential issues early, and ensured everything aligned with the client's long-term goals. The engagement has been smooth.”
Ian Hatcher-Williams
Founder
Date: 11/14/2025