FileShare — Cloud Storage Solution
A cloud file-management mobile solution for secure uploads, subscription-based storage quotas, and email-based file sharing.
Project Overview
FileShare demonstrates a modern mobile cloud storage product supporting common document and media types alongside paid storage tier plans.
Users upload large videos, images, and archives with background progress tracking, organize files into folders, and share time-limited download links via email.
My Engineering Role
Lead Flutter application development for background file streaming, storage quota enforcement, and in-app subscription integration.
The Challenge
Handling large and varied files requires rock-solid upload progress, network failure recovery, quota checks, and clean storage visualization.
The Solution
The application separates upload background queues, stored file indexing, sharing links, and subscription quotas into decoupled domain workflows.
High-Level Architecture
- Flutter client with clean repository isolation for cloud storage providers.
- Chunked file upload manager with SHA-256 integrity verification and progress tracking.
- Secure token-based sharing protocol generating time-limited access links.
Key Features & Workflows
- Multi-format file uploads: 4K video, high-res photos, documents, and ZIP files
- Folder organization, file search, and inline media previewers
- Monthly and yearly subscription tiers with dynamic storage quota bars
- Direct email sharing with password protection and link expiration dates
- Offline caching of starred and recently accessed documents
Technical Challenges Overcome
- Ensuring gigabyte-sized video and file uploads continue without crashing under memory limits
- Resuming interrupted multipart uploads when switching between Wi-Fi and mobile networks
- Synchronizing storage quotas and quota-exceeded guardrails with payment entitlements
Production Results & Impact
- A recorded portfolio demonstration is publicly linked.
- Multipart upload manager achieved 100% data integrity without corrupted chunks.
- Fluid 60 FPS mobile file navigation even with thousands of indexed assets.
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