---
title: "Full-Stack Engineer (High-Performance Web Systems) at IO TECH SOLUTIONS LIMITED – VueJobs"
canonical_url: "https://vuejobs.com/jobs/io-tech-solutions-limited-full-stack-engineer-high-performance-web-systems"
meta:
  "og:title": "Full-Stack Engineer (High-Performance Web Systems) at IO TECH SOLUTIONS LIMITED – VueJobs"
---

> Index of every page on this site: [llms.txt](https://vuejobs.com/llms.txt)

# **Full-Stack Engineer (High-Performance Web Systems)**

IO TECH SOLUTIONS LIMITED

Vue-first

**Full-stack**

![Flag of Hong Kong](https://hatscripts.github.io/circle-flags/flags/hk.svg) Hong Kong Island, Hong Kongon-sitefull-timesenior3 months ago

[**Apply Now **](https://www.careers-page.com/io-tech-solutions-limited/job/RY7V64V6?ref=vuejobs.com)

---

### **What You Will Do**

- **Legacy Transformation:** Reverse-engineer complex business logic from C# WPF systems and architect modern, scalable equivalents in a web-native environment.
- **Data Pipeline Engineering:** Architect and optimize the end-to-end WebSocket pipeline, implementing advanced techniques like binary serialization (Protobuf), message routing, and bounded channel queuing.
- **High-Frequency UI:** Develop real-time data visualizations and grids that handle thousands of updates per second with zero UI lag using Web Workers and custom rendering strategies.
- **Infrastructure Collaboration:** Partner with trading and infra teams to bridge the gap between low-latency backend services and the end-user experience.
- **Quality & Resilience:** Establish automated testing frameworks for real-time systems and provide tier-2 production support to ensure 24/7 system reliability.

### **Requirements**

- **Backend Expertise:**
  - 5+ years of professional experience in **.NET / C#** development, specifically with **ASP.NET Core Web API**.
  - Strong proficiency with **Entity Framework Core** and **MSSQL** (or similar relational databases).
  - Experience implementing and managing **Redis** or similar caching solutions.
  - Familiarity with message brokers such as **RabbitMQ, Kafka**, or other pub/sub systems.
- **Frontend Mastery:**
  - Deep proficiency in **Vue.js (Vue 3)** and **TypeScript**.
  - Experience with **Pinia** for state management and **Tailwind CSS** for styling.
  - Hands-on experience with high-performance data grid libraries (e.g., **VXE Table**).
- **Real-Time Systems & Performance:**
  - Proven track record building real-time applications using **WebSockets**, **SSE**, or similar streaming technologies.
  - Expertise in high-performance rendering techniques: **virtual scrolling**, efficient DOM updates, and handling massive real-time datasets.
  - Experience with **Web Workers** for offloading CPU-intensive tasks to maintain UI responsiveness.
  - Knowledge of **Protobuf** serialization and working with binary data protocols.
- **Architecture & Security:**
  - Solid understanding of modern authentication systems, including **OAuth 2.0, SAML, and SSO**.
  - Ability to establish and maintain **automated testing practices** and frameworks.
- **Preferred Qualifications:**
  - Previous experience in **FinTech, Crypto, or Financial Services**.
  - Experience building or maintaining trading platforms or high-frequency data dashboards.

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