Many trading businesses rely on years—sometimes decades—of accumulated code written for legacy platforms. Expert Advisors, custom indicators, and execution logic built in MQL, C, or C++ often represent a significant intellectual and financial investment. Yet as markets and technology evolve, these legacy trading systems face growing limitations. Fintechee addresses this challenge by enabling a seamless migration path from traditional environments to modern, web-based trading infrastructure.

The Challenge of Legacy EA and Indicator Code

Legacy trading code was typically designed for desktop platforms with tightly coupled execution environments. While these systems have proven reliable, they are often difficult to scale, integrate, or adapt to new markets such as crypto and DeFi.

Common challenges include:

• Platform lock-in and limited extensibility

• Difficulty integrating new data sources

• Fragmented development and deployment workflows

• Rising maintenance and operational complexity

As a result, traders and institutions face a difficult choice: rebuild everything from scratch or remain constrained by outdated technology.

Migrating C/C++/MQL to JavaScript & WebAssembly

Fintechee eliminates this dilemma by providing tools to migrate C, C++, and MQL code into a modern execution environment powered by JavaScript and WebAssembly.

WebAssembly enables near-native performance within web browsers, allowing legacy trading logic to run efficiently without rewriting core algorithms. JavaScript serves as the orchestration layer, integrating migrated strategies into Fintechee’s broader trading ecosystem.

This approach allows traders to modernize incrementally—preserving proven logic while gaining access to new capabilities.

Running Legacy Logic Directly in Web Browsers

One of Fintechee’s most powerful capabilities is the ability to run legacy trading logic directly in web browsers.

Instead of relying on desktop installations or proprietary runtimes, migrated strategies execute within a secure, browser-based environment. This enables:

• Platform-independent access

• Centralized deployment and updates

• Consistent behavior across devices

• Seamless integration with web-based analytics and execution tools

The result is a modern trading workflow without sacrificing performance or reliability.

Protecting Past Investments While Modernizing

Legacy code represents more than software—it embodies market knowledge, research, and experience. Fintechee’s migration strategy ensures that these investments are protected.

By enabling EA migration rather than replacement, traders and institutions can:

• Retain proven strategies and indicators

• Extend existing logic to new asset classes

• Combine legacy models with modern tools such as AI and advanced analytics

Modernization becomes a process of enhancement rather than disruption.

Reducing Technical Debt in Trading Operations

Over time, legacy systems accumulate technical debt—complex dependencies, outdated tools, and fragmented workflows. Fintechee addresses this by consolidating execution, development, and deployment within a unified platform.

Migrated strategies benefit from:

• Simplified maintenance

• Faster iteration cycles

• Lower operational risk

• Improved long-term scalability

By reducing technical debt, Fintechee allows trading operations to focus on strategy and performance rather than infrastructure limitations.