rohan.jk — interactive transit map
distilling a financial analyst: small open models to frontier accuracy
Fine-tuning small open-source models (Qwen3 8B and 14B, QLoRA on one RTX 4090) into a financial memo system where every number is mechanically verified: a tuned writer, a tuned repair model, and a deterministic gate that together match a frontier model on provable correctness. Every experiment pre-registered, including the failures.
quant strategy research: strategies, and the ways backtests lie
The strategy-research arm of a miniature trading firm: a backtesting engine that makes cheating structurally impossible, pairs trading with Kalman-adaptive hedging, factor strategies with survivorship bias measured at +4.6%/yr instead of disclaimed, and an ML layer that lost to its baseline.
careersphere
A PyCon Singapore 2026 champion project that maps a person's skills to realistic career moves using OpenAI, SkillsFuture data, live job signals, and a 3D role sphere.
bqst
An audio mastering plugin built in C++/JUCE, combining custom DSP, saturation design, oversampling, preset management, DAW validation, and a polished hardware-inspired interface.
yourcast!
A serverless application that generates personalized 3-5 minute AI-narrated podcasts based on user-selected topics, aggregating stories from 200+ RSS feeds and processing 16,000+ articles daily.
Data Center Atlas
An automated pipeline that discovers, extracts, and consolidates 11,000+ data center facilities worldwide using AI agents, vision-based PDF extraction, and geospatial deduplication.
PatentEase
A mobile patent management system that simplifies the submission, tracking, and management of patent applications, featuring an ML-powered similarity checker and integration with Singapore's IPOS patent database.
live chord monitor
A real-time MIDI and computer-keyboard chord monitor: a root-agnostic chord-detection engine with correct enharmonic spelling, built as a signed and notarized macOS app in Electron, React, and TypeScript.
Tesla Supercharger Tracker
A data pipeline that tracks the entire global Tesla Supercharger network, performing schema-driven field-level change detection to maintain a complete audit trail of infrastructure evolution.
This Website
A zero-dependency, single-page portfolio site with real-time audio visualizations, canvas-rendered backgrounds, and a Markdown-driven project system - all in vanilla JS.
Bio
hi, i'm rohan, a computer engineering student at ntu, singapore. i build end-to-end products with AI, from data pipelines and cloud infrastructure to mobile apps and everything in between. outside of code, i write, produce and record music. feel free to reach out below!
Stats
Tech stack
- Python
- JavaScript
- React
- C++
- JUCE
- DSP
- OpenAI
- Codex
- Google Cloud
- Node.js
- Docker
- Git
- Linux
- DuckDB
- PostgreSQL
- Claude
- Gemini