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Full-stack Web Developer

IO Tech Solutions Limited
Hong Kong, Hong Kong SAR, Hong Kong
On-site

About this role

Hong Kong, Hong Kong SAR, Hong Kong

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

  • Professional experience in .NET / C# backend.
  • Background with Vue.js or React JS 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)
  • Experience with VXE Table or similar high-performance data grid libraries
  • Knowledge of Pinia state management and Tailwind CSS
  • Understanding of authentication systems (OAuth 2.0, SAML, SSO)
  • Experience in crypto, fintech or financial services is nice to have

Required Skills

  • Data

  • FinTech

  • Routing

  • Support

  • Authentication

  • Vue.js

  • Entity Framework

  • Kafka

  • RabbitMQ

  • Financial Services

  • Trading

  • Web Applications

  • Features

  • Redis

  • React

  • Infrastructure

  • CSS

  • Databases

  • C#

  • TypeScript

  • Testing

  • Business

  • SQL

  • Management

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