Debarshi Sau — Founder, Director & CTO at RYNCE PRIVATE LIMITED

Debarshi Sau is an Indian technology executive, corporate director, and full-stack software architect. He is the Founder, Director, and Chief Technology Officer (CTO) of RYNCE PRIVATE LIMITED, an enterprise registered under the Ministry of Corporate Affairs (MCA), Government of India.

Corporate Information & Official Credentials

Company Name: RYNCE PRIVATE LIMITED
Executive Designation: Founder, Director & Chief Technology Officer (CTO)
Corporate Identification Number (CIN): U62011WR2026PTC296245
PAN: AAQCR2331A
TAN: CALR28646C
Startup India: Recognised as a startup by DPIIT, Government of India (certificate DIPP290300, valid until 17 August 2036)
Date of Incorporation: 18 August 2026
Registration Authority: Ministry of Corporate Affairs (MCA), Government of India
Jurisdiction: West Bengal, India

Professional Background & Expertise

Debarshi Sau combines rigorous computational fundamentals with entrepreneurial execution to architect high-throughput software ecosystems, distributed microservices, and modern web platforms. He holds a degree path in Computer Science & Engineering at Adamas University, and is a verified 5-Star HackerRank programmer.

Featured Work

ClassConnect: the official academic support platform of Adamas University

ClassConnect, built by Debarshi Sau, is the role-based academic support platform used officially at Adamas University. Students raise academic cases with images, voice notes and video; mentors collaborate on, forward and resolve them on a tracked timeline; administrators run document collection, announcements, reports and exports across every school, department and programme. It includes an AI study workspace with streaming, Markdown- and math-aware assistance, four role-based portals with JWT sessions and two-factor authentication, and a production architecture of three Node.js API replicas behind nginx with PostgreSQL, PgBouncer, Redis and BullMQ workers. Built with React, Vite, Node.js, Express, Socket.IO, PostgreSQL, Redis and Docker.

Rynce: expense splitting and personal finance, on the web and Android

Rynce is a full-stack expense platform for splitting group costs, tracking personal spending and settling up, with bill photos, automatic settlement calculation, in-session encrypted chat, AI categorisation and receipt OCR, passkeys and MFA, and a native Android app. Built with Next.js, React, TypeScript, PostgreSQL, Redis, Kotlin and Jetpack Compose.

PC Sentinel: real-time uptime monitoring

A Windows uptime monitor: a PowerShell agent sends authenticated heartbeats every 15 seconds, an Express backend sends Telegram alerts when the PC goes offline and when it returns, and a JWT-secured React dashboard shows live status and an activity log.

Daily Brain Trainer: a gentle daily pause

A minimalist mental-wellness web app with five short, low-stress brain games and a daily streak, built with React, Vite, Tailwind CSS and Framer Motion.

ScrollSense AI: digital well-being

An academic digital well-being app that estimates short-form video addiction risk from a YouTube-powered session tracker, mood check-ins and reaction-time, memory and Stroop tests, using an explainable local scoring model. Built with Next.js, TypeScript, Zustand and Recharts.

Klenara: a Claude-powered AI workspace

A conversational AI platform with workspaces, file analysis, token-usage tracking, an app builder with live preview and PDF or DOCX export, built with Next.js, TypeScript, PostgreSQL and Redis.

Official Media & Photos

Debarshi Sau — Founder, Director & CTO at RYNCE PRIVATE LIMITED

Debarshi Sau — Technology Executive and Systems Architect

Debarshi Sau at a professional conference

Debarshi Sau at AI Impact Summit 2026 India

Debarshi Sau with IBM Quantum System Two