Full-stack software engineer, building real products.

Currently at Yukthi Systems (Bangalore ,remote), where I've shipped a Gmail-scale webmail platform, a Slack-like chat system, and Go-based CLI tools processing terabytes of email data.

DocSend alternative. Built and launched solo.

• Per-link access gates: password → expiry → email capture → email verification → view cap
• Page-level heartbeat analytics (5s pulse) — dwell time per page, not just clicks
• RAG-based AI Q&A over PDF chunks using Groq Llama 3.1 + GIN full-text search
• Canvas watermarking with dynamic tokens ({email}, {ip}, {date}) resolved per viewer
• Direct-to-S3 presigned upload flow — no large files through app server
• Multi-gateway payments: Razorpay (INR) + PayPal (USD), routed by currency
• Distributed rate limiting via Upstash Redis, edge-safe
• Multi-tenant team support, anonymous uploads with claim-on-signup

Stack: Next.js 15, TypeScript, Neon Postgres (raw SQL), AWS S3, Upstash Redis, Groq, Resend

Frontend Developer → Yukthi Systems (Aug 2025 – Present)

• Webmail platform (Gmail-scale) — compose, threading, folders, serving 1,75,000+ users
• YCT-Chat — real-time messaging, channels, video/audio calls (Slack-like)
• Y-Files — video streaming, real-time collaboration, file versioning (Go backend)
• Admin Panel with 30+ sections across all products

Software Engineer → AtticBits Solutions (Sep 2023 – Aug 2025)

• Workstation — flagship workflow management platform used by 500+ companies
• Hiring platform with WebSocket-based real-time resume parsing (tRPC + Remix)
• Booking platform (hotel, ticket, tour) with payments and admin panel

Languages   TypeScript · JavaScript · Go · SQL
Frontend    React · Next.js · React Native · Tailwind · Shadcn/UI
Backend     Node.js · Express · Go · Socket.io
Databases   PostgreSQL · MongoDB · Redis
Infra       AWS S3 · Docker · Upstash · Vercel · Neon

ruprajsingh1@gmail.com · LinkedIn · therupraj.in