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Case Study — 2026

FitLocker

Commercial Deployment & Client

Playground Fitness & TrainFitness (Kamuning & Visayas)

Gym Owners, Coaches, Front-Desk Staff & Members

Key Operational Impact

Synchronized member records, subscriptions, and QR check-ins across 3 commercial gym locations with 0 lost logs.

Technology Stack & Libraries

ReactFirebaseTailwind CSSNode.jsCloud Firestore

Executive Overview

Gym operations platform engineered for commercial athletic facilities and multi-branch clubs. Brings sub-second QR kiosk check-ins, automated membership renewal alerts, coach shift management, and cash collection audit trails into one controlled workspace.

The Operational Problem

Commercial gym operators struggled with paper logbooks, untracked membership expirations, unauthorized entry, and collection discrepancies at the front desk.

The Engineered Solution

Architected FitLocker as a centralized gym operations hub with sub-second QR kiosk check-ins, automated subscription renewal pipelines, staff PIN audit trails, and multi-branch revenue analytics.

Key Architectural Decisions
  • Real-time Firebase Firestore database for sub-second front-desk kiosk check-ins
  • Role-based PIN security ensuring staff audit logs for all cash collections and discounts
  • Responsive tablet and mobile command center for instant owner revenue oversight
Verified Production Outcomes
  • Live commercial deployment across Playground Fitness & TrainFitness (Kamuning & Visayas)
  • Replaced manual paper logbooks with automated QR kiosk check-ins and member analytics
  • Eliminated front-desk collection leakage with role-based PIN security and audit trails

Engineering Scope & Role

Full-Stack Developer & Product Designer (Solo Builder)

fitlocker-5a5ee.web.app