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YavuzhanKursun/ReadMe.md

Yavuzhan Kursun

Software engineer building multi-tenant SaaS and production telephony systems. Final-year CS student in Turkey, currently interning at Multitek Teknoloji.

Currently

Most of my time goes into two things. The first is FinancialTracker, a multi-tenant pre-accounting SaaS I built end-to-end — Java 21 and Spring Boot 3 on the backend with PostgreSQL, Redis, and ActiveMQ Artemis; React 18 and TypeScript on the frontend; deployed on Azure. The second is VoIP infrastructure at Multitek: production PBX systems on Issabel 5 and Asterisk, handling SIP trunking, NAT/RTP routing, inter-PBX trunking, CDR pipelines, and operator panel integrations.

Selected Work

FinancialTracker — Multi-tenant pre-accounting platform with tenant isolation, RBAC, and financial dashboards. Java 21, Spring Boot 3, PostgreSQL, Redis, ActiveMQ Artemis, React 18, TypeScript. Live at zecrone.com. Repo

DailyFlow — iOS productivity app built with SwiftUI and SwiftData. Local-first architecture, no backend dependency.

Issabel / Asterisk Deployments — Production telephony infrastructure for enterprise use. SIP trunking over chan_pjsip, NAT traversal, multi-site inter-PBX routing, CDR integration with external dashboards.

Stack
Backend Java 21, Spring Boot 3, PostgreSQL, Redis, ActiveMQ Artemis
Frontend React 18, TypeScript, SwiftUI
Infra Docker, Ansible, Azure, Linux (Rocky), Nginx
Telephony Asterisk, Issabel, SIP, chan_pjsip

Contact

LinkedIn · Medium · HackerRank

Based in Turkey, open to remote roles.

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  1. YavuzhanKursun YavuzhanKursun Public

    GitHub profile README

    1

  2. ai-image-classifier ai-image-classifier Public

    AI-Powered Image Classifier using MobileNetV2 Transfer Learning with Streamlit Web UI

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  3. on-muhasebe-showcase on-muhasebe-showcase Public

    Zecrone — Multi-tenant SaaS Accounting Platform | Spring Boot + React + React Native + PostgreSQL | Architecture & Documentation Showcase

  4. turkish-economic-forecasting turkish-economic-forecasting Public

    ML-powered forecasting system for Turkish economic indicators (USD/TRY, Inflation, Interest Rate) — TÜBİTAK supported research

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  5. Universite-Online-Sinav-Sistemi Universite-Online-Sinav-Sistemi Public

    Full-Stack Online Exam Management System - Flask + React, PostgreSQL, JWT Auth, Role-Based Access Control

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