Shufeng Chen

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I’m an M.S. student in Electrical Engineering at Columbia University, focused on backend infrastructure, systems performance, and applied AI engineering.

My work spans cloud-native services (Kubernetes, microservices, data pipelines) and AI product engineering (retrieval/Q&A, multimodal interaction), with an emphasis on reliability, observability, and clean API design.

Backend & systems: distributed services, scheduling/automation, performance debugging and tooling
Applied AI: LLM apps, retrieval workflows, evaluation and latency optimization
Interactive systems: game/XR engineering with strong focus on runtime performance

Focus

What I enjoy building

Cloud Backend

Microservices, REST APIs, caching, data pipelines

Applied AI

LLM apps, retrieval/Q&A, ML experimentation & evaluation

Systems

Performance debugging, reliability, dev tooling

Internship Experience

Selected highlights

Software Engineer Intern

Jul 2025 – Aug 2025

Tencent · Cloud Computing Group

Built backend microservices for distributed inference pipelines on Kubernetes-managed HPC clusters; automated container lifecycle & remote job operations for smoother orchestration.
Developed internal cluster management and scheduling APIs (Spring Boot/Security, Redis/MySQL) and integrated cloud metadata synchronization for lifecycle tracking.
Improved ingestion/telemetry services by shipping a CLI-based pipeline adopted by 20+ internal apps; enabled high-throughput streaming from 4,300+ edge nodes.
Deployed pre-embedding pipelines across Tencent Cloud and AWS (EKS/EC2), improving inference latency by 1.3× and reducing CPU load by 2.2× via caching and preprocessing.

Full Stack Software Engineer Intern

Sep 2024 – Nov 2024

Tree-Graph Research Institute

Built a cross-platform crypto analytics app (React Native) with GPT-based insights; summarized 5,000+ news sources using LDA topic modeling.
Designed an automated ETL pipeline (Scrapy, AWS Lambda, DynamoDB, EventBridge) and indexed real-time data to OpenSearch; improved search API performance by 33%.
Shipped high-performance secrets-detection microservices (Go/Python/Rust) over gRPC + Kubernetes; reduced P95 latency from 170ms to 40ms and supported 10K+ QPS using Bloom-filter warm cache.
Implemented serverless remediation workflows (Step Functions + Lambda) and production observability (Prometheus/Grafana, structured logs).

Full Stack Software Engineer Intern

Jan 2023 – Mar 2023

VisionX LLC

Developed an ONNX-optimized, real-time environmental monitoring platform with depth-enabled cameras and on-device inference for fire/smoke and pedestrian detection.
Led delivery of a PDF Q&A system on AWS (SageMaker/App Runner/S3) with LangChain + React + Express; improved responsiveness via vector caching and prompt tuning.
Designed an MLOps rollout pipeline (offline → shadow → live) with Jenkins and Grafana for drift/latency monitoring in field deployments.

Projects

Selected repos from github.com/shufengc

Patton Food

Java • Spring Boot • React • PostgreSQL • AWS

GitHub Repo

A full-stack, cloud-deployed online food ordering web application with clean API design and a modern UI.

User registration and login
Session-based authentication using Spring Security
Password encryption with BCrypt
Restaurant/menu browsing with cart and checkout flow

PDF-AI: Conversational PDF Q&A System

JavaScript/TypeScript • React • Express • LangChain • OpenAI

GitHub Repo

An AI assistant that lets users upload PDFs and ask natural language questions about their content.

PDF upload & processing pipeline
Retrieval + LLM answering with conversation context
Responsive chat UI
Latency optimizations via caching and request shaping

L2 Game Engine

C++17 • Lua 5.3+ • SDL • Box2D • CMake

GitHub Repo

A cross-platform 2D game engine in C++ with Lua scripting. Designed to host game logic externally while keeping the runtime fast, modular, and easy to extend.

C++ core runtime: real-time game loop, scene/actor system, and engine APIs optimized for iteration speed and stable frame updates.
Lua scripting + language hosting: externalized gameplay logic and modding; provided script-facing APIs for actor creation, behaviors, and interactions.
SDL rendering + input: moved from text-based to 2D real-time gameplay; implemented event-driven input handling and basic audio/bitmap rendering.
Box2D physics integration: collision handling, rigid body dynamics, friction, and gravity to support realistic 2D physics gameplay.
Joystick support: up to two joysticks with configurable mappings for player control and responsive movement tuning.
Cross-platform build: Linux/macOS/Windows build support via CMake toolchain and platform-specific project generation.
Shipped a complete game on the engine: Havoc: 300-Seconds Escape (Playable Build)

LinguAR: AR Language Learning with Real-Time Translation & AI Assistant

Unity • C# • iOS ARKit • YOLOX • Google Cloud Translate • Whisper • GPT-4o • AWS Polly

Demo Video

An iOS AR app prototype that combines real-scene recognition, translation, and multimodal tutoring for daily language practice.

Built the end-to-end AR learning loop: object recognition (YOLOX) → translation overlay (Google Cloud Translate) → pronunciation output (AWS Polly).
Led AR shooting mini-game feature implementation: fixed screen flicker via gameplay screen dynamics; added SFX/VFX + scoreboard and developed interactive bullet models.
Integrated voice-first AI tutoring (Whisper STT + GPT-4o + TTS) to enable conversational practice with multimodal I/O.
Delivered a usability-tested team prototype with story maps and iterative refinements based on structured user feedback.

Game & XR Projects

Unity / Unreal demos and shipped playable builds

VR Room Simulator

Unreal Engine • Blueprints

Demo Video

A VR walkthrough simulator focused on interaction and environment fidelity, built for real-time performance.

Interactive VR navigation with user-friendly scene flow
Blueprint-driven interaction logic for rapid iteration
Performance-oriented real-time rendering considerations

A2 GO! (AR Location-Based Game)

Unity • C# • Mapbox

Demo Video

An AR experience inspired by location-based gameplay, combining map navigation with AR interactions.

Map-based discovery using Mapbox integration
AR interactions and UI flows for collection/progression
Mobile-first performance and interaction design

RENOVAR (AR Furniture Preview)

Unity • XR/AR • Meta Quest

Project Page

An AR prototype that helps users preview furniture in space before purchase, emphasizing scale, placement, and usability.

Virtual placement workflow for in-room visualization
Interaction and UI patterns optimized for XR devices
End-to-end prototype delivery with structured iteration

The Legend of Zelda (Unity Remaster)

Unity • C#

Playable Build

A Unity remaster-style gameplay prototype focusing on core action-adventure mechanics and moment-to-moment feel.

Implemented key gameplay systems (combat/items/progression)
Enemy behavior and encounter tuning for gameplay clarity
Polished controls and UI feedback loops

Echo Space (Echolocation Adventure)

Unity • C#

Playable Build

A gameplay prototype built around echolocation-style exploration, turning sound-driven feedback into navigation.

Core mechanic: reveal environment state through echolocation cues
Designed exploration loop to support discovery and tension
Implemented interaction and pacing to keep sessions engaging

Chrono Portal: A Journey Home

Unity • C#

Playable Build

A puzzle game centered on portal mechanics, emphasizing level logic, item interactions, and UI clarity.

Portal-based puzzle design with staged difficulty progression
Inventory UI and interaction system for puzzle tooling
Shipped playable build with multiple levels and clear objectives

Publications

Selected papers

Breast Cancer Detection Model Training Strategy Based on Continual Learning

CAIBDA 2022 • Conference Paper

IEEE Xplore

Shufeng Chen, Fenghui Tang.

Global-local Dynamic Adversarial Learning for Cross-domain Sentiment Analysis

Mathematics 11(14):3130 • 2023

MDPI

Juntao Lyu, Zheyuan Zhang, Shufeng Chen, Xiying Fan*.

Contact

Fastest way to reach me

shufeng.c.dev@gmail.com

Connect on LinkedIn