Olympus Fitness - Gym Saas

Commercial gym operations were previously burdened by manual front-desk friction, paper ledgers, and revenue leakage caused by members accessing facilities despite expired memberships or uncollected dues. • Front-desk staff spent excessive time manually validating member cards and recording merchandise purchases during peak morning and evening rushes. • The primary objective was to engineer a unified, zero-friction operating platform that automates member check-ins, eliminates paper logs, enforces strict real-time payment reconciliation at entry points, and gives gym members a native-feeling mobile portal for tracking personal records (PRs), nutrition, and habit streaks.

Engineered as an end-to-end full-stack web application using the Next.js 16 App Router and React 19, backed by MySQL 8.0 through Drizzle ORM for type-safe, sub-millisecond database queries. • Dual-Portal Architecture & Cryptographic Session Security: Architected a split role-based ecosystem separating the staff "War Room" admin console from the mobile-first Member Experience. Authentication utilizes cryptographically secure tokens stored in HttpOnly cookies, backed by an in-database sessions table featuring automatic garbage collection of expired tokens and bcrypt hashing. • Automated Check-In Gatekeeper Engine: Developed a centralized validation pipeline (`validateCheckIn`) executed via Next.js Server Actions. When a member scans their unique QR badge, the system evaluates their membership expiration date against gym calendar closures and compares outstanding accounts receivable against a strict threshold limit. If access is denied, entrance is halted instantly and an automated SMS alert is dispatched via the Notify.lk gateway. • Point-of-Sale (POS) & Treasury Ledger: Built a real-time inventory and billing subsystem supporting multi-item checkouts, variant management, stock quantity decrementing, low-inventory alert thresholds, and printable thermal receipt generation. Every transaction simultaneously writes to the payments ledger, tracking paid balances and accounts due atomically. • Biometric Tracking & Zyra AI Engine: Built member habit tracking, PR leaderboard indexing, and weight progression telemetry. Integrated 'Zyra', a hybrid fitness engine combining a deterministic instant response core for biometric metrics with OpenRouter LLM capabilities for contextual workout and nutritional guidance.