Fullstack Developer

Built a multi-tenant ERP SaaS platform for the Turkish construction industry independently from product concept to production. Developed 44 feature modules, approximately 500 component files, 167 database migrations, and reusable route-parametric panels for contractor and subcontractor organizations.

Implemented layered authorization with route guards, UI permission gates, server-side row-level security, and RPC controls. Developed progress payment, VAT withholding, cheque and promissory note, payroll, cash flow, procurement, and warehouse modules. Built a Claude API assistant with tool calling, model routing, and prompt caching to control per-user API costs.

Built the full procurement chain, including requisitions, quotations, purchase orders, and goods receipts, along with the supplier management module. Authored the data model and business rules on the .NET and C# side, developed RESTful APIs, and optimized existing endpoint data structures.

Developed form-heavy and table-heavy enterprise screens using React and Tailwind CSS or Sass. Supported migration from JavaScript to TypeScript, improved Core Web Vitals through code splitting and lazy loading, participated in Agile and Scrum ceremonies and code reviews, and produced technical documentation.

Built purchase recording, current account tracking, and price and yield calculation flows end to end for a hazelnut trading business.

Designed an offline-first data structure and synchronization logic for use cases involving intermittent internet connectivity. Developed the application with Flutter, Dart, and Supabase.

Developed a tournament management system for arm wrestling using React, TypeScript, and Supabase. Implemented a double-elimination bracket algorithm from scratch, including upper and lower bracket flows, bye allocation, and match progression modeled as a state machine.

Added real-time result updates and internationalization support for tournament management workflows.

Developed a 3D survival game with Unity and C#. Built the core survival loop, including inventory, placement-based building, farming, melee and ranged combat, damage and health systems, and enemy artificial intelligence.

Set up the character animation pipeline with Unity Animator and implemented a JSON-based save and load system for world, inventory, and structure state.