ROHAN DAS
Backend Developer, B.Tech Computer Science 2027
PROJECTS
PixelForge Image Processing API
Stack: Python, FastAPI, Celery, Redis, Docker
- Moved processing to a Celery worker pool, handling about 60 images per second on a four-core machine without blocking requests.
- Built an image-processing API for resizing and watermarking uploads, so small shops stop editing product photos by hand.
- Secured the API with key-based auth and per-key rate limits, returning clear 429 responses with retry-after headers.
TutorLink Tutoring Marketplace
Stack: Next.js, TypeScript, PostgreSQL, Prisma, Tailwind CSS
- Prevented double-booked slots with a database exclusion constraint rather than application checks that race under load.
- Rendered listings with Next.js server components over PostgreSQL through Prisma, keeping the client bundle small on low-end phones.
Splitsy Shared Expense Tracker
Stack: React, TypeScript, Node.js, Express, MongoDB
- Settled each group's debts in at most n-1 payments with a greedy min-cash-flow algorithm instead of pairwise repayments.
SKILLS
Python, FastAPI, Redis, PostgreSQL, Celery, Docker
