Hariharan · builder · applied math
About
I'm Hariharan, an Applied Mathematics undergrad at UC San Diego who builds AI-powered and full-stack software. I like turning hard problems into small, careful, runtime-verified projects.
My work spans multi-agent AI systems, full-stack web apps, computational-chemistry research at UCSD's APEX Lab, and quantitative finance with the campus Hedge Fund Club, on top of two years leading a team as a sergeant in the Singapore Police Force.
I move fast at hackathons (2nd of 150 at the Google I/O hackathon, 2nd at Vercel's Zero to Agent, among others) and care about shipping things that actually work.
Languages: TypeScript, JavaScript, Python, Java
Frontend: React, React Native, Next.js, Expo, Tailwind CSS, Vite
Backend: Node.js, FastAPI, REST, Server-Sent Events
APIs: Anthropic API, OpenAI API, Gemini API, Vercel AI SDK, GitHub API
Databases: PostgreSQL, Supabase, Convex, Drizzle ORM, Upstash Redis
Cloud: Vercel, Vercel Workflow Dev Kit, Vercel Cron, Slurm / HPC
AI / ML: Multi-agent systems, YOLO, ORB-SLAM3, Gemini Live, Computer Vision
Tools: Git, Turborepo, Vitest, Playwright
Projects
SkyGuardian
Search-and-rescue mission control for drones: a DJI Mavic survey feed and a Tello inspection drone fused through YOLO + Gemini vision, a live knowledge graph, a Gemini Live voice pilot, and ORB-SLAM3 path reconstruction.
2nd of 150 teams · Google I/O hackathon
Lattice
A durable AI agent for computational chemistry, built with Vercel's Workflow Development Kit and Claude. It plans DFT campaigns, polls long-running Slurm jobs on an HPC cluster, and recovers automatically from VASP convergence failures.
2nd place · Vercel Zero to Agent hackathon
Hindsight
A shared-memory and drift-detection platform for AI coding agents, built on Nia, Tensorlake, Convex, and Vercel. A "Guardian" loop files real GitHub issues and hands findings to Devin until they are resolved.
3rd place · Nozomio Hackathon
WatchDog
A CalTrans (Bay Area District 4) CCTV monitoring and incident-clipping dashboard for dispatchers, built with a five-person team. The idea caught Y Combinator president Garry Tan's attention at the event.
GStack × GBrain · YC hackathon
Argus
A competitor-intelligence tool running three Claude agents concurrently via a FastAPI orchestrator, generating executive briefings with risk signals in under 40 seconds. Shipped with four people in six hours.
Top-5 community vote · SDx Hackathon
CalTrack
A cross-platform calorie and fitness tracker (Expo + Supabase) with USDA food search, barcode scanning, a macro "bullshit detector," and 320 tests at 92% coverage. Most of it was built by supervised autonomous Claude Code agents under a strict atomic-commit, device-verified rule.
Now
Right now I'm a research intern at UCSD's APEX Lab (computational chemistry and DFT), a quantitative analyst with the campus Hedge Fund Club, and I keep building AI side-projects between problem sets, including this very portfolio.
Contact
Hariharan
builder · applied math