Sellatrix
Multi-tenant POS SaaS platform revolutionizing retail operations across diverse business verticals. Built as a microservices architecture with Next.js and React frontend, Nest.js backend, and MongoDB database. Powers real-time transactions through WebSockets, handles massive scale with Redis caching, and delivers seamless hardware integration for complete point-of-sale solutions. Deployed on Digital Ocean with GitLab CI/CD pipelines, supporting multiple business niches with PWA capabilities for offline-first operations.
Overview
Multi-tenant POS SaaS platform revolutionizing retail operations across diverse business verticals. Built as a microservices architecture with Next.js and React frontend, Nest.js backend, and MongoDB database. Powers real-time transactions through WebSockets, handles massive scale with Redis caching, and delivers seamless hardware integration for complete point-of-sale solutions. Deployed on Digital Ocean with GitLab CI/CD pipelines, supporting multiple business niches with PWA capabilities for offline-first operations.
Key Features
Technology Stack
Problem Statement
Retail businesses struggled with expensive, rigid POS systems that couldn't adapt to different business models. Traditional solutions required separate implementations for each business type, lacked real-time capabilities, and forced businesses into expensive hardware lock-ins. Multi-location businesses needed separate systems per location, creating data silos and operational nightmares. Offline capabilities were non-existent, meaning any internet outage brought business to a halt.
Business Impact
Sellatrix transformed retail operations by delivering a flexible, multi-tenant POS that adapts to any business model. The microservices architecture enabled rapid scaling, supporting thousands of businesses across multiple verticals on a single platform. Real-time WebSocket communication eliminated transaction delays, while PWA capabilities ensured business continuity even during internet outages. Multi-tenant architecture reduced infrastructure costs by 70% compared to traditional per-business deployments, while hardware integration flexibility freed businesses from vendor lock-ins. The platform now processes millions of transactions daily with 99.9% uptime.