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johnnietse/README.md

πŸš€ Johnnie Tse (Yan Ho Tse)

High-Performance Systems & Infrastructure Engineer
Specializing in HPC, Cloud-Native AI, and Autonomous Systems.

Portfolio β€’ LinkedIn β€’ Email


πŸ›οΈ Professional Engineering Narrative

I am a Computer Engineering student at Queen's University (Class of 2026) with a deep focus on monumental open-source architectures and sustainable AI infrastructure. My work bridges the gap between bare-metal hardware constraints and distributed multi-host orchestration, from optimizing Solana's blockchain infrastructure to architecting carbon-aware LLM serving on Kubernetes.


πŸ›‘οΈ Core Engineering Pillars

☁️ Cloud-Native & AI Infrastructure (Solana, vLLM, Deel)

  • Solana Labs (Fellow): Engineering high-throughput blockchain infrastructure and applied ML.
  • vLLM / llm-d: Architected an Energy-Aware Endpoint Picker (EPP) in Go, integrating eBPF telemetry and Carbon-Aware Controllers to reduce inference energy by 17.4%.
  • Kubernetes (SIG Apps): Core contributor to LeaderWorkerSet (LWS); implementing state-machine fixes for distributed GPU scheduling and high-availability pod orchestration.
  • Deel (ML Research): Built a scalable legal-data RAG pipeline using Python/Selenium/Pinecone, automating ingestion of 10,000+ documents with structure-aware semantic chunking.

🚘 Autonomous Systems & Robotics (Queen's AutoDrive, Foresoon)

  • Queen's AutoDrive (CAN Lead): Architected a multi-threaded ROS2 C++ node for SAE Level 4 vehicles. Managed 100+ signals across 4 isolated CAN networks with <2ms latency and ISO 26262 ASIL-D compliance.
  • Foresoon (Robotics Intern): Deployed a CV pipeline (OpenCV/ArUco) for a Kinova Gen3 6-DOF arm on a Clearpath Jackal UGV for autonomous assistive feeding.
  • G.O.S. Phytotron (IoT): Engineered a custom 4-layer PCB (nRF52840) running Zephyr RTOS with Thread mesh networking, achieving 360nA quiescent current.

⚑ High-Performance Computing & Systems (Arista, QHPC)

  • HPC Capstone (ELEC498): Developed a PID-controlled DVFS engine for miniMD, utilizing Intel RAPL and Beta-Adaptation algorithms to optimize MPI communication phases.
  • Arista Networks (Intern): Modeled $2M project portfolios in SAP S/4HANA, flagging $150K in overruns and building Power BI dashboards to boost project efficiency by 25%.
  • Queen's HPC (Co-Founder): Established the first ratified HPC club at Queen's; developed a technical curriculum covering SLURM, MPI/OpenMP, and HPL/HPCG benchmarking.

πŸ› οΈ Core Stack & Engineering Vectors

Category Tools & Technologies
Languages Go C++ C Python Rust TypeScript Solidity Assembly Bash
Infra & Cloud Kubernetes Docker eBPF Terraform Ansible AWS Solana Redis
Systems & RTOS Linux Zephyr ROS2 Verilog FPGA KiCad CAN
AI & Data PyTorch TensorFlow OpenCV LangChain Pinecone SAP PowerBI
HPC & Net MPI CUDA SLURM gRPC Protobuf

πŸ“Š Engineering Metrics

Johnnie's GitHub Stats Top Langs


πŸš€ Featured Engineering Showroom

A phase-aware Kubernetes scheduling plugin for the llm-d framework. It implements an adaptive, closed-loop controller to route LLM Prefill and Decode phases across heterogeneous accelerators (GPUs and ASICs) to optimize for Software Carbon Intensity (SCI) and energy budgets.

Phase-aware Dynamic Voltage and Frequency Scaling (DVFS) controller for the miniMD proxy application.

πŸš€ ELEC-475

Labs and classwork from ELEC 375

Level 4 autonomous vehicle real-time road-sign TensorFlow Lite object detection model trained and deployed on Coral TPU edge hardware using EfficientDet-Lite.


πŸ“¬ Activity Pulse

Recent Activity


Generated with ⚑ by Manus | Last Updated: 2026-06-13 04:07:40 UTC

Pinned Loading

  1. AI-Powered_Professional_Job_Application_Assistant AI-Powered_Professional_Job_Application_Assistant Public

    AI-powered full-stack job application assistant that automates tailored resume & cover letter creation, analyzes job/company data, simulates ATS scoring, and provides actionable insights. Complete …

    TypeScript 1

  2. llm-d-epp-Energy-Aware-Endpoint-Picker-Plugin- llm-d-epp-Energy-Aware-Endpoint-Picker-Plugin- Public

    Measured study of energy-aware replica selection for LLM inference in the llm-d router, on a shared GPU cluster with no privileged control. Out-of-tree EPP plugin, pre-registered evaluation, every …

    Go

  3. elec-498-group-30-2025-2026-proxy-app elec-498-group-30-2025-2026-proxy-app Public

    Phase-aware Dynamic Voltage and Frequency Scaling (DVFS) controller for the miniMD proxy application.

    Python

  4. travelExpenseTracker travelExpenseTracker Public

    Android finance tracking app with SQLite-backed secure login authentication, real-time financial analytics using MPAndroidChart, and financial charts visualizations built for competition teams to m…

    Java

  5. ChillnCharm ChillnCharm Public

    Android e-commerce app built with MVVM, Clean Architecture, Retrofit, and Room (freelance proof of concept).

  6. walk-jump-motion-classifier walk-jump-motion-classifier Public

    Desktop machine learning application for classifying walking vs. jumping using smartphone accelerometer data, feature extraction, normalization, and logistic regression.

    Python