# Ethan Zhu

> Actively seeking full-time SDE jobs | Software Engineer | Backend, Full-stack, Distributed system, Database, TypeScript, Java | 0 to 1 builder | JHU Alum

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/ethanzhu

Enthusiastic software engineer with experience in education, commercial, and manufacturing organizations. Backend experience in system design, database design and optimization, cache design and message queue. Now exploring frontend and full-stack techniques with TypeScript. Graduated master's in Computer Science at JHU. Can be reached at ethan.ys.zhu@gmail.com.

✅ Experienced software engineer with proven expertise in full-stack development across education and commercial systems
✅ Demonstrated success in optimizing system performance, reducing manual processes through technical innovation
✅ Strong track record of implementing robust architectural solutions using modern technologies that maintain high availability
✅ Skilled in database optimization techniques, improving query performance and increasing system throughput
✅ Experienced team lead with success in delivering projects under budget while meeting client requirements
✅ Proven ability to identify operational pain points and implement technical solutions that significantly improve efficiency
✅ Background in building scalable, secure applications spanning from database architecture to responsive user interfaces
✅ Versatile technical professional with expertise across multiple programming languages and technology stacks
✅ Strong team management experience with demonstrated ability to foster cooperation and collaboration across functions
✅ Interested in opportunities to apply technical expertise to solve complex business challenges and drive tangible business value

🛠️SPECIALTIES
Java, TypeScript, Python, Spring Boot, Next.js, MySQL, PostgreSQL, Redis, RabbitMQ, Docker, System Design, Data Analysis, Agile Methodology, Team Management

## Work Experience
### Software Engineer @ Johns Hopkins Whiting School of Engineering
Jan 2025 – Present | Baltimore, Maryland, United States
• Collaborating with Prof. Ziang Xiao and Prof. Daniel Khashabi, developed Agentic AI system for LLM HCI research, architecting multi-agent system using LangChain integrated with OpenAI API, implementing prompt engineering and contextual retrieval to structure and improve LLM responses
• Accelerated page rendering speed by 40% through restructuring frontend to component-based architecture with React and hooks, shadcn/ui, Tailwind CSS and managing states by Zustand
• Built Event-Driven backend with Django and Server-Sent Events (SSE), enabling real-time unidirectional streaming from LLM agents to human researchers for interactive evaluation
• Optimized API gateway and boosted throughput by 25% by using Nginx as reverse proxy and load balancer for traffic management and Kafka as message queue for request buffering
• Deployed automated CI/CD pipelines with GitHub Actions to detect build-time errors in Python backend and TypeScript frontend, enhancing system reliability by enabling early issue resolution for scalable AI research deployments

### Course Assistant @ Johns Hopkins Whiting School of Engineering
Jan 2025 – Jan 2025 | Baltimore, Maryland, United States
• Course Assistant for EN601.208 Full-stack JavaScript

### Software Engineer @ zPods
Jan 2025 – Jan 2025 | St Louis, Missouri, United States
• Developed a cross-platform sleep tracking and analysis app with React Native and Expo in TypeScript, enabling real-time sleep data visualization and health monitoring
• Designed user-friendly interface with 18+ animated components using React Native Animation API and Reanimated to enhance user experience
• Reduced boilerplate by 60% and improved component re-render performance by migrating from React Context to Zustand for state management
• Engineered Event-Driven microservices using Firebase Pub/Sub and cloud functions for real-time health data processing

### Full Stack Software Engineer @ OfSpectrum
Jan 2025 – Jan 2025
• Developed a dynamic product showcase website and trial platform utilizing Next.js, React, FastAPI, and Supabase

### Software Engineer @ Foshan Yufeili Medical Commercial Co., Ltd
Jan 2020 – Jan 2024 | Guangdong, China
• Implemented a high-concurrency e-commerce system for medical consumables ordering, leveraging microservices architecture with Java, Spring Boot, and MySQL, accelerating order processing by 80% 
• Developed a responsive user interface using Vue.js and styled components, enabling the sales team to place orders, check inventory, and review order history across web and mobile platforms
• Optimized database performance and reduced data retrieval by 30% by analyzing slow queries with advanced MySQL query optimization and composite indexes creation for large-scale datasets 
• Improved consumables lookup time by 96% (from 5s to 200ms)} through implementing two-level cache using Elasticsearch for full-text search, Redis for hot data caching, and LRU eviction strategy during traffic surges
• Ensured reliable order placement during peak bidding seasons by reducing order failures by 99% through implementing RabbitMQ with Topic Exchange pattern to segregate orders from major and minor suppliers
• Reduced release cycles by 80% and ensured consistent production builds via automating CI/CD pipeline through containerized deployments using Docker and Jenkins
• Achieved 100% branch coverage and delivered robust system using JUnit for unit testing and JMeter for load testing

### Project Manager @ HAND Enterprise Solutions Co., Ltd.
Jan 2018 – Jan 2020 | Shanghai, China
• Launched cross-departmental budget consolidation initiative, coordinating budget proposals across multiple departments, standardizing data metrics, and monitoring both budget compilation processes and system development progress
• Optimized budget planning procedure and decreased planning duration from 5 months to 3 months by Business Process Reengineering (BPR) and delivering features by SCRUM agile method
• Led integration of data schema between ERP and legacy systems and achieved 99.9% data consistency for financial statement generation by implementing ETL pipelines using Pandas

### Logistics Intern @ Hepalink
Jan 2017 – Jan 2017 | Shenzhen, Guangdong, China
• Analyzed logistics performance metrics (transportation efficiency, inventory turnover) using Microsoft Excel, and generated regular reports in Tableau to identify operational improvements 
• Ensured 100% stock data accuracy by managing pharmaceutical raw material inventory with WMS, including receiving, dispatching, cycle counting, and data reconciliation
• Improved transportation efficiency by 2% through identifying transit loss issues and collaborating with third-party cold chain logistics providers to optimize shipment monitoring processes

### Operation Assistant @ IAEXP Botswana
Jan 2016 – Jan 2016 | Guangzhou, Guangdong, China
• Organized end-to-end international shipment operations across 10+ African countries, including order processing, multi-modal transport coordination, and shipment tracking, achieving 95% on-time delivery rate
• Collaborated with 20+ primary global logistics partners (shipping lines, airlines, freight forwarders, customs brokers) to optimize transportation costs by 10% while maintaining 98%+ service satisfaction
• Reduced processing time by 30% in analyzing transportation data using Microsoft Excel Pivot Tables and VBA automation, streamlining operational processes and enabling data-driven decision-making


## Education
### Master of Science - MS in Computer Science
The Johns Hopkins University

### Bachelor of Business Administration - BBA in Supply Chain Management
Guangdong University of Finance & Economics


## Contact & Social
- LinkedIn: https://linkedin.com/in/ethan-ys-zhu
- Portfolio: https://wontonion.github.io

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Source: https://flows.cv/ethanzhu
JSON Resume: https://flows.cv/ethanzhu/resume.json
Last updated: 2026-04-11