Chan Sheung Long (Matthew)

Senior Hardware Engineer (Nov 2022 – Present)
viAct · Hong Kong SAR
Delivered IoT solutions, led system integration efforts, provided consulting, and managed both technical and procurement collaborations with vendors.
System Engineer → Senior System Engineer (Apr 2021 – Oct 2022)
Chun Wo Development Holdings · Hong Kong SAR
Led innovation initiatives, directed R&D projects in AI and IoT, and delivered 3S smart‑construction solutions.
Research Assistant (Jul 2019 – Apr 2021)
City University of Hong Kong · Hong Kong SAR
Conducted IoT research and development focused on geospatial data, engineered a patented sensor, and deployed projects on EMSD's GWIN network, a LoRaWAN‑based platform.
Robotics Team Coach (Part‑time) (Sep 2012 – Mar 2018)
Baptist Lui Ming Choi Secondary School · Hong Kong SAR
Mentored elite student teams for international robotics competitions, advancing STEM education and overseeing team operations.

VLM-Based Vector Search – Vector search system for similar photos using Vision Language Models (VLM), implementing multimodal embeddings and similarity algorithms.
LLM VLM Embeddings Vector Database
Rockchip-Based Edge AI – Rockchip-based edge AI solution with YOLO implementation, optimized for real-time vision inference with hardware-aware processing.
YOLO Rockchip Edge Computing Hardware Design
Agentic Flow System – Agentic flow architecture for recursive LLM prompting and orchestration, creating advanced reasoning pipelines.
LLM Python JavaScript/HTML Agentic Flow Orchestration
Operations Toolkit – Internal workflow and efficiency software designed to automate processes and enhance team productivity.
Internal Tools Automation Workflow Productivity
IoT Integration System – IoT integration system built with Node.js, featuring time-series data handling, KV store, observability, and real-time visualization.
Node.js Time-Series KV Store Scalability Observability
High‑Resolution Positioning – High-resolution positioning system utilizing GNSS with RTK technology for centimeter-level accuracy.
GNSS RTK High-Precision
Company-Wide IoT System – Company-wide IoT infrastructure designed to support thousands of concurrent connections and multiple simultaneous users at scale.
LoRaWAN 4G/5G Scalability Expandability Infrastructure

AI/ML Systems: LLM, VLM, Agent, llama.cpp, Ollama, Qdrant, Embeddings, YOLO, ResNet, Vector Search
IoT Infrastructure: LoRaWAN, 4G/5G, NB-IoT, Wi-Fi
Edge Computing: Rockchip, Raspberry Pi, RKNN, Espressif, Microchip, Embedded Firmware
Backend & Data: Node.js, Node-RED, InfluxDB, Qdrant, Nginx, Apache, Redis/Dragonfly, MQTT, RabbitMQ, REST API
Positioning Tech: GNSS, RTK, High-Precision Localization
Programming Languages: Python, JavaScript, HTML, C/C++, Go, Lua
Technical Leadership: Project Management, R&D
Automation & Tools: Workflow Automation, Internal Tools

Gold Prize – HKEIA Innovation & Technology Project Competition 2019 – Recognized for "Design and Development of Quadruped Robot".
S. H. Ho Foundation Ltd. Student Project Scholarship – Recipient, Department of Electrical Engineering, RGC 64B prize.
Final Year Project Competition – Silver Prize 2019 – "Design and Development of a Quadruped Robot" supervised by Dr. Ricky Lau.