Web Application Full-Stack Developer (C# / .NET/ ASP.NET)

What You Will Do: Migrate features from the legacy C# WPF system to a Vue 3 web platform, understanding the original business logic and re-implementing it for the web. Build and optimize real-time data views, which update at high frequency with minimal UI lag. Improve WebSocket data pipeline -- optimize message routing, compression, chunked sending, bounded channel queuing, and Web Worker processing for large datasets. Collaborate with trading and infrastructure teams to develop new features. Production support and bug fix. Establish auto testing practices and framework. Requirements: 5+ years professional experience in .NET / C# backend development (ASP.NET Web API) Core Strong proficiency with Vue.js (Vue 3 preferred) and TypeScript Strong experience with real-time web applications (trading app is a plus) -- WebSocket, Server-Sent Events, or similar streaming data technologies Proficiency with high-performance data rendering -- virtual scrolling, efficient DOM updates, handling thousands of rows updating in real-time Experience with Protobuf serialization and binary data protocols Familiarity with Web Workers for offloading CPU-intensive tasks Solid understanding of SQL databases (MSSQL or similar) and ORM (Entity Framework Core) Experience with Redis or similar caching solutions Familiarity with message brokers (RabbitMQ, Kafka, or similar pub/sub systems)