Designed and developed a team-specific on-call management platform that transformed a manually managed process into a centralized workflow spanning a cross-platform mobile application, web-based management panel, backend API, and PostgreSQL database.

• Implemented secure authentication, role-based access control, automated scheduling, shift changes, availability tracking, and notification workflows.
• Built an Android native integration using Kotlin, WorkManager, and operator USSD commands to route the shared on-call phone according to the active duty schedule.

Contributed to an internal web application for creating steel production orders and tracking their progress across production stages in an industrial environment.

• Worked on the Angular-based user interface and Spring Boot backend services supporting user and administrator workflows.
• Contributed to the management of order and production data through a relational MySQL data model.

An AI-assisted mobile application that brings photos scattered across different devices into private, event-based shared collections for organized archiving, discovery, and sharing.

• Supports event creation, invitations, shared photo uploads, archive and collection views, and optional location-based browsing on a map.
• Enriches uploaded photos with AI-generated captions, tags, and vector embeddings to enable Turkish and English semantic search.
• Uses a React Native mobile client, NestJS API, PostgreSQL with pgvector, background processing, and S3-compatible object storage.