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I'm writing code or maybe I'm doing magic
👨‍💻
I'm writing code or maybe I'm doing magic

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@terrayazilim @netfleetorg @Tunex-Digital @dileksoft

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yekaranfil/README.md

Hi there, I'm Yusuf Emre Karanfil 👋

Backend & DevOps Engineer specializing in scalable microservices, cloud infrastructure, and distributed real-time platforms.

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🚀 About Me

Results-driven Backend & DevOps Engineer with 4+ years of hands-on production experience designing, deploying, and maintaining high-performance microservices and reliable infrastructure.

  • 🏗️ Backend Engineering: Deep expertise in Java (Spring Boot, Spring WebFlux), building asynchronous workflows, reactive pipelines, and event-driven architectures.
  • 💳 Fintech & Telematics: Proven track record implementing mission-critical payment gateways, idempotency transaction engines, and large-scale GPS/telemetry routing systems.
  • ⚙️ DevOps & Cloud: Skilled in Linux server administration (Ubuntu, systemd), containerization with Docker / Compose, reverse-proxy topologies (Nginx), and automated CI/CD pipelines across cloud (Azure) and bare-metal environments.
  • 🎓 Background: B.Sc. in Management Information Systems (Necmettin Erbakan University, GPA: 3.43/4.00).

🛠️ Tech Stack & Capabilities

Languages & Core

Java Scala Python TypeScript SQL Bash

Backend & Frameworks

Spring Boot Spring WebFlux OAuth2 / JWT REST APIs Microservices

DevOps, Cloud & Infrastructure

Docker Linux Nginx Microsoft Azure CI/CD Git

Databases & Caching

PostgreSQL Redis MongoDB MSSQL


💼 What I Do & Architectural Focus

  • Scalable Authentication & Authorization: Designing multi-tenant identity systems leveraging Spring Security, OAuth2, JWT, and granular RBAC.
  • Financial & Transactional Reliability: Building idempotent payment gateways with automated webhooks, audit trails, and reconciliation flows.
  • Real-Time Data & Telematics: Processing high-concurrency GPS and telemetry data, route planning optimization, and caching with Redis.
  • Production Server Hardening: Setting up bare-metal and cloud Linux nodes, reverse proxy configurations, SSL auto-renewals, and systemd daemons for high availability (99.9%).

📊 GitHub Statistics

Yusuf Emre's GitHub Stats Top Languages

Let's connect and build reliable, high-performance systems together.

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