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Achievement: QuickdrawAchievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: YOLO

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Mingkai406/README.md

Good systems start with better questions.

Hi, I’m Mingkai. Kirby waving

I’m a software engineer and MSCS student at Northeastern University in Silicon Valley. I build full-stack applications and AI systems, connecting backend infrastructure with interactive experiences.

My interests include human–AI interaction, multimodal systems, and making AI behavior more reliable and measurable.

Python TypeScript C# C++ SQL
React Node.js PostgreSQL AWS GCP / Vertex AI

LinkedIn · VOICE · CueFrame demo

Selected work

Started Project What it does · Explore
May 2025 VOICE
Applied AI · Research project		 Multi-agent virtual-patient platform deployed in a graduate speech-language pathology (SLP) course in Summer 2026. I lead backend engineering and LLM evaluation, connecting interactive patient dialogue with automated assessment.
Recognized with Northeastern University’s 2025–2026 Bridge Builder Award for this work.
Platform · Code
Sep 2025 Momentum
Full-stack mentorship · Next.js / PostgreSQL		 Full-stack mentorship platform for goal setting, progress tracking, and mentor feedback. This project was used in Northeastern University’s OGS Global Student Mentor Program, supporting 40+ students.
Live demo · Code · Architecture
Mar 2026 CreatorPal
Audience research · Google ADK		 Audience research agent built with Google ADK, combining hybrid retrieval, on-demand skills, and executable Python analysis. Checks numerical claims against computed results before committing recommendations with supporting evidence.
Architecture · Evaluation
Jul 2026 Agent Reliability Harness
Agent evaluation · Python		 Fault-injection and code-validation framework for agent systems. Independently verifies database and file state, tests crash recovery and idempotency, and gates code patches through five isolated Docker checks.
Recovery example · Report
Aug 2026 CueFrame
Visual interaction · C++		 C++ visual-interaction runtime with local object detection, temporal evidence tracking, and rejection of outdated responses. Latest-frame scheduling reduced p95 observation latency by 44% versus FIFO in a controlled CPU benchmark.
Interactive demo · Architecture · Benchmark
Sep 2026 TurnServe
Inference systems · C++		 C++20 inference runtime for concurrent conversations sharing a llama.cpp model. Three scheduling policies coordinate prefill and decoding; cancellation-safe turn replacement prevents further output and history commits after cancellation is acknowledged.
Design · Recorded run

Outside of code

I enjoy traveling, working out, and swimming. I’m also a skyscraper enthusiast with an interest in architecture.

Pinned Loading

  1. agent-reliability-harness agent-reliability-harness Public

    Reliability testing for Google ADK, LangGraph, and custom applications: fault injection, checkpoint recovery, independent state verification, and OpenTelemetry reports.

    Python 1

  2. nuvoicesim/voice-sim-app nuvoicesim/voice-sim-app Public

    An AWS Amplify Application With React Vite Frontend

    TypeScript 3

  3. turnserve turnserve Public

    C++ LLM inference runtime with multi-session scheduling, cancellation-safe turn replacement, and trace-driven observability.

    C++

  4. cueframe cueframe Public

    C++ visual interaction runtime with local object detection, temporal evidence tracking, and cancellation-aware responses.

    C++