Hello, I am

Mert Çıklabakkal

Full Stack Developer

Specializing in Java/Spring Boot, Microservices, and High-Performance Architectures.

📍 Kayseri, Türkiye 📧 contact@mertciklabakkal.com
Mert Çıklabakkal

Summary

Full Stack Developer with 10+ years of experience in E-commerce, Logistics, and ERP domains. Architected high-concurrency systems handling 5,000+ concurrent connections and 300+ RPS. Specialized in Java/Spring Boot, React, and Cloud (AWS/Azure) ecosystems. Seeking a backend-heavy architectural role in scalable distributed systems.

Experience & Projects

Full Stack Developer

Eria Teknoloji

2016 - Present

Leading backend architecture and full-stack development for high-scale enterprise solutions.

BMW Motorrad Online Store (Subsidiary of Borusan Otomotiv)

2025

B2C e-commerce platform for premium motorcycle equipment and accessories.

  • Architected a cloud-native microservices backend on AWS using Kubernetes and Docker, ensuring auto-scaling capabilities for high-traffic campaigns.
  • Engineered a cohesive enterprise ecosystem by seamlessly integrating with SAP and CRM platforms, achieving end-to-end business process automation.
  • Designed secure order processing workflows with Spring Boot and PostgreSQL, handling complex stock variants.
AWSKubernetesDockerSpring BootPostgreSQL

EczaTrend B2B (Flagship Product)

2016 - Present

Turkey's first and largest exclusive joint procurement platform for pharmacists.

  • Lead Developer of the platform for 10 years, continuously evolving the architecture to support growing user demand and new modules.
  • Designed a real-time WebSocket architecture managing 5,000+ concurrent connections, facilitating live auctions and joint purchasing events.
  • Scaled the system to handle 300 requests per second (RPS) with sub-millisecond latency during critical procurement windows.
  • Developed and maintained custom logistics algorithms that automated shipping routing, reducing calculation errors by 95%.
Spring BootWebSocketsRedisLogistics Algorithms

Proprietary Enterprise Application Framework (Internal Tool)

2016 - Present

Modular Java ecosystem for rapid application development and standardization.

  • Architected a database-agnostic framework integrating with Spring, managing component lifecycles via Hibernate, Eclipse Vert.x, and Apache libraries.
  • Engineered an automated CRUD engine that dynamically generates Ext JS frontend components based on backend entities, reducing boilerplate development time by 70%.
  • Built centralized Authentication & Authorization modules to automate security compliance across all internal projects.
JavaSpringHibernateExt JSVert.x

Lonca Market (Subsidiary of Koç Holding)

2023 - 2024

Private B2B marketplace enabling inter-company product sales.

  • Architected the backend using Spring Boot and Elasticsearch, reducing product search query latency by 40% for catalogs with 100k+ items.
  • Implemented asynchronous messaging with RabbitMQ, enabling reliable processing of 10k+ daily transactions between subsidiaries.
  • Integrated Redis caching, reducing database load by 30% during peak sales campaigns.
Spring BootElasticsearchRabbitMQRedis

Company Valuation Automation System

2024

Web-based platform for automated financial analysis and reporting.

  • Engineered a data ingestion engine that extracts financial data (Tax Returns, Trial Balances) from unstructured sources like PDFs, XMLs, and Scanned Images using OCR technologies.
  • Developed complex algorithms to calculate company valuation metrics automatically based on historical income statements.
  • Built a reporting module that programmatically generates comprehensive presentation slides, reducing manual financial analysis time by 90%.
JavaSpring BootOCRAlgorithms

Online Automotive Spare Parts Ordering System

2023

Centralized platform aggregating inventory from Europe's leading suppliers.

  • Built a unified data aggregation engine that standardizes inventory data from 15+ external APIs, providing real-time stock accuracy.
  • Reduced order processing time by 60% by automating the purchasing flow across different supplier systems via a single React-based interface.
JavaMicroservicesAPI IntegrationReact

TokenFlex Portakal B2B (Subsidiary of Koç Holding)

2022

B2B wholesale marketplace platform.

  • Developed microservices for order management using Spring Boot, ensuring data consistency across distributed systems.
  • Optimized SQL queries on MySQL, resulting in 50% faster page load times for the admin reporting dashboard.
Spring BootMySQLMicroservices

Hot Air Balloon Maintenance ERP System

2018

Web-based ERP under Civil Aviation Authority supervision.

  • Engineered a compliant tracking system used by 30+ companies to digitize maintenance logs, eliminating 100% of paper-based archiving costs.
  • Implemented granular Role-Based Access Control (RBAC) to pass Civil Aviation security audits.
JavaERP ArchitectureRBAC

Technical Skills

Languages

Java JavaScript (ES6+) SQL HTML5 CSS3

Frameworks

Spring Boot Spring Cloud React.js Vue.js Ext JS Node.js Hibernate

Databases & Caching

PostgreSQL MySQL MongoDB Redis Elasticsearch

DevOps & Tools

AWS Azure Docker Kubernetes (K8s) Jenkins RabbitMQ Git Maven Linux

Education & Certifications

Erciyes University

Associate Degree, Computer Programming

2016 - 2018

Technical High School

Computer Science and Information Technology

2012 - 2016

Cisco Certified Network Associate (CCNA)

Routing and Switching

Web Based Marketing Software

HTL Spengergasse (Vienna, Austria)