🎓 CS @ The Ohio State University  •  💻 Backend Enthusiast  •  🚀 SWE Intern Seeker (Summer/Fall 2026)

• 📚 Junior majoring in Computer Science & Engineering @ OSU
• 💻 Focused on Backend, APIs, Databases, and Distributed Systems
• 🌱 Currently building backend systems with Spring Boot, Redis, and messaging systems
• 🧩 Enjoy solving problems and building useful tools
• 🎯 Goal: grow into a strong backend engineer who writes clean & reliable code

A document Q&A assistant using retrieval-augmented generation.

• 🧠 Built a LangChain-based RAG pipeline
• 🧩 Generated embeddings via DashScopeEmbeddings
• 🔁 Integrated ChromaDB vector search and optional Ollama local inference

Tech: Python, LangChain, DashScope (Tongyi/Qwen), ChromaDB, Ollama

A high-concurrency local review platform focusing on caching and consistency.

• ⚡ Implemented Redis caching strategies for hot data and common failure modes
• 🔒 Designed voucher flash-sale logic using Redisson distributed locks
• 🪪 Built token-based authentication with Redis-backed sessions

Tech: Java, Spring Boot, MyBatis, Redis, Redisson, MySQL

Backend system supporting core food delivery workflows.

• 🍱 Built RESTful APIs for menu, cart, and order modules
• 🔐 Implemented JWT authentication and role separation
• ✅ Ensured transactional consistency for order processing

Tech: Java, Spring Boot, MyBatis-Plus, MySQL, JWT

Reverse-engineered embedded firmware and developed exploits in a competitive security challenge.

• 🧩 Identified vulnerabilities in embedded systems
• 🚀 Advanced to the Attack Phase
• 🛡️ Strengthened low-level systems and cybersecurity knowledge

Tech: Embedded Systems, Reverse Engineering, Cybersecurity

• 📚 Spring Security & authentication patterns
• 🗄️ Database transactions, indexing, and performance tuning
• ☁️ Docker + backend deployment basics

📧 Email: hank.zihao@gmail.com
🔗 LinkedIn: https://www.linkedin.com/in/hankzhang-ky
💻 GitHub: https://github.com/hankkyy

Always happy to connect, learn, and collaborate! 🚀