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merrttopal/README.md

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πŸš€ About Me

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”
β”‚  πŸ’Ό  Senior Software Development Specialist @ Etiya (Sep 2023 - Present)    β”‚
β”‚  🏠  Istanbul, Turkey                                                       β”‚
β”‚  🎯  Long-term goal: Software Architect                                     β”‚
β”‚  πŸ€–  Passionate about AI-driven automation & legacy system modernization.   β”‚
β”‚  ⚑  TDD advocate | 80%+ test coverage | Clean code enthusiast              β”‚
β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜

I'm a passionate Backend Developer focused on building reliable, scalable, and high-performance systems using Java and Spring Boot. Currently at Etiya, I modernize legacy monolithic BSS applications into cutting-edge microservices architectures.

πŸ”₯ What I Do Best

Domain Expertise
Legacy Modernization Java 8 β†’ 17 migrations, monolith β†’ microservices refactoring
Microservices Multi-tenant architectures, Event-Driven Architecture (EDA)
AI Integration n8n workflows, LLM integrations, 70% productivity boost
DevOps CI/CD pipelines (Jenkins, ArgoCD), Docker, Kubernetes
BSS/OSS Telecom CPQ, Product Catalog, Customer Asset modules

πŸ› οΈ Tech Stack

πŸ’» Languages & Frameworks

Java Stack

πŸ—„οΈ Databases & Caching

Databases

☁️ DevOps & Cloud

DevOps

🧰 Tools & Platforms

Tools

πŸ’Ό Professional Experience

🏒 Senior Software Development Specialist β€” Etiya

September 2023 – Present | Istanbul, Turkey

+ Recurring Payment Microservice
  └─ Built from scratch (Java 21, Spring Boot) for subscription management
  └─ ActiveMQ (Amazon MQ) for event-driven, secure & scalable transactions

+ Legacy BSS Modernization  
  └─ Migrated monolithic app: Java 8 β†’ Java 17
  └─ Refactored into modern microservices architecture
  └─ Significant performance & maintainability improvements

+ Document Engine Microservice
  └─ Multi-tenant document generation (HTML rendering + Jasper Reports)
  └─ Integrated with downstream systems

+ AI-Enhanced Productivity
  └─ Integrated AI tools into SDLC at Etiya
  └─ 70% increase in code quality & delivery speed

+ BSS Transformation
  └─ Product Catalog Management, CPQ, Customer Asset modules
  └─ Streamlined complex telecom sales workflows

+ DevOps & Quality
  └─ CI/CD: Bitbucket β†’ Jenkins β†’ ArgoCD
  └─ Docker & Kubernetes orchestration
  └─ 80%+ unit test coverage (JUnit, Mockito) β€” strict TDD
  └─ 3+ microservices delivered end-to-end over 12 months
  └─ 20% feature delivery rate increase via Jira/Git/Confluence optimization

πŸ—οΈ Engineering Portfolio

Project Description Tech
🏠 Self-Hosted Home Server Full-stack home server: Ubuntu, CasaOS, Docker, Cloudflare Ubuntu CasaOS Docker Cloudflare
πŸ€– AI Automation Workflows Custom n8n + LLM integrations for technical task optimization n8n LLM Automation
πŸ› οΈ Developer Toolset Cloud-native browser tools: JSON viewer, JWT decoder, etc. Cloud-Native Web Tools
πŸ“Š CRM Demo Advanced CRM & BSS architecture demonstration Spring Boot Microservices
πŸ“‘ Telco API Sandbox TMF-compliant mock API for BSS/OSS integration testing REST API TMF Mock Server

πŸ“œ Certifications

πŸ›οΈ Architecture & Frameworks πŸ€– AI & Digital Transformation πŸ’» Core Development
ODA Overview & Components (TM Forum) AI & CX Awareness Java 301 β€” Turkcell Geleceği Yazanlar
ODF Foundation (TM Forum) AI & Automation Foundation Customer Centricity Foundation
SID Foundation (TM Forum) Managing Digital Transformation (ODF)
TAM Foundation (TM Forum) Digital Maturity Fundamentals
eTOM Fundamentals & Foundation DT4DI Awareness
MAMA Awareness

πŸ“Š GitHub Stats

GitHub Stats Top Languages
GitHub Streak

🌐 Connect With Me


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