Usage-based parking with real-time sessions and RLUSD settlement on the XRP Ledger.

Instead of paying for a fixed block of parking time, PayPark lets drivers start a live session, track cost as they park, and settle only for the time they actually use.

Next.js TypeScript Express Socket.io XRPL RLUSD TomTom

Columbia DivHacks 2025

• 🏆 3rd Place Overall
• 🏆 Best Financial Hack — Capital One
• 🏆 On-Chain Innovation — Ripple
• 🏆 Most Popular Hack

A real-time crypto portfolio simulator built around market behavior rather than static balances.

Streams BTC/ETH pricing and order-book data, supports simulated trading, and layers AI-generated risk commentary over portfolio activity.

Real-time APIs Gemini FinTech Market Data

A personal-finance platform built around making financial data easier to query and understand.

Supports transaction ingestion, automatic CSV mapping, retrieval-augmented financial chat, and portfolio visualizations.

Next.js TypeScript RAG Semantic Kernel SQLite

Cloud Infrastructure    → repeatable, policy-aware systems
Distributed Systems     → state, coordination, reliability
AI Infrastructure       → retrieval, orchestration, observability
FinTech                 → market systems, payments, financial tooling
Physical AI             → reinforcement learning + simulation

Python · Java · C++ · TypeScript · JavaScript

Next.js · React · Node.js · Express · Flask

AWS · Terraform · Docker · Git/GitHub · Jenkins · GCP · Azure

SQL · MySQL · SQLite · Redis · Prisma

Gemini API · RAG · Semantic Kernel · Hugging Face · Isaac Gym

• infrastructure abstractions that make cloud systems harder to misuse
• distributed state and real-time systems
• AI infrastructure beyond the model API
• reinforcement learning in simulated environments
• financial systems where software decisions directly affect user behavior