Zihao (Eddie) Song

Complex Frontend Application Development
Led the development of LoanOptions.ai, a comprehensive loan application platform built with Next.js and React. Integrated multiple third-party services, including OCR scanning, credit checks, and bank statement automation, improving operational efficiency and user experience. Participated in architectural and workflow decisions to ensure the platform could handle complex multi-step applications, scale effectively, and remain maintainable.

AWS Cloud & Serverless Development
Worked with AWS CloudFormation and Lambda to standardize and automate infrastructure deployment across environments. Developed solutions using AWS SQS to decouple long-running server requests, enhancing system responsiveness and reliability. Managed S3-based file storage pipelines with presigned URLs, handling both private and public buckets to ensure secure, efficient, and controlled access to user-uploaded documents.

Database Optimization
Redesigned and optimized MongoDB database architecture, restructuring data models to improve query efficiency and storage performance. Contributed to a rational schema design that reduced frontend and backend processing failures while enhancing system reliability, maintainability, and scalability.

High-Performance Frontend State Management
Implemented complex application state management using Redux and custom React Hooks, supporting dynamic form generation, multi-step workflows, and real-time data synchronization. Ensured the platform remained scalable, responsive, and maintainable through careful state architecture and reusable components.

Application Security & OWASP Best Practices
Enhanced application security by applying OWASP standards, implementing input validation, XSS/CSRF protection, and encryption for sensitive data. Contributed to automated testing workflows using JEST for unit and integration tests, reducing production bugs and enabling faster iterations while maintaining system integrity.

User Behaviour Analysis & Data-Driven Optimization
Developed Google Cloud Functions and BigQuery pipelines, integrating analytics tools to enable full-funnel user behaviour tracking. Produced actionable, data-driven insights to guide product iterations, optimize user experience, and inform strategic decisions.

Security Monitoring & Vulnerability Protection
Integrated Sentry for real-time error logging and reporting, leveraging logs and reports to monitor system health and identify issues. Contributed to regular vulnerability assessments to maintain high system availability, reliability, and security standards.