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)