Utku Alp Turen

Utku Alp Turen

Mobile-First Full-Stack Engineer

Featured Projects

My most impactful work with full source code access

Featured Projects

My most impactful work with full source code access

"Imagination is the first line of code that turns into reality."

Voyager

Full-Stack Social Media Application

A cross-platform social network for itinerary planning, live sharing, chat, and activity logging.

In Active Development

Engineered highly fluid UI using Riverpod and flutter_hooks with hero animations, custom animated buttons, and bespoke image picker. Dynamic theming system with customizable color palettes.

Built resilient, offline-first architecture with ObjectBox, featuring custom data hydration for chat and seamless sync flows. Integrated FCM for push notifications with topic subscriptions.

Designed robust, layered ASP.NET Core API with JWT authentication, refresh tokens, and manual session revocation. Real-time chat system using custom SignalR hub for low-latency communication.

High-performance global search across users, posts, and plans using indexed PostgreSQL queries. Direct S3 uploads via presigned URLs, completely bypassing server to minimize backend load.

Platform Highlights

Cross-Platform (iOS, Android, Web)
End-to-End Encryption
Offline-First Architecture
In-App Messaging
Photo Journaling
Interactive Maps
Calendar Sync

Technology Stack

Flutter.NET CoreSignalRPostgreSQLAWS S3RESTful APIWebSockets
In Active Development

Lokal

Multi-Tenant Business Management & Loyalty Platform

Enterprise-grade platform with multi-tenant business management, custom theme engine per business, ONION architecture, and ABAC security model.

December 2025 - Present

Dynamic UI with custom themes, logos, and brand colors per tenant. Full white-label experience.

ONION architecture for clean, testable code. Layered structure for sustainable development.

Optimized PostgreSQL queries with Dapper. High performance with minimal server load.

Granular Attribute-Based Access Control (ABAC). Role-based permissions and secure resource access.

Technology Stack

Flutter.NET CoreDapperPostgreSQLMinIO S3ABAC
Live

FAB Coffee

Comprehensive Coffee Shop Management System

Dual-platform Flutter application system for business management and customer loyalty. Includes menu management, inventory tracking, recipe management, campaign system, and QR-based loyalty program.

July 2025 - November 2025

Multi-user authorization system with role-based access control. Granular security with 15+ permission categories.

Dynamic menu management, product variants, allergen tracking, and inventory control. Real-time stock updates with low-stock alerts.

Advanced reporting and analytics dashboard. Sales, customer behavior, and staff performance tracking with FL Chart visualizations.

Digital loyalty cards with QR code integration. Point earning, spending, and reward management for customer retention.

Technology Stack

Flutter.NET CoreRiverpodSignalRPostgreSQLGo Router