Efe Engin COLOGLU

• Refactored legacy code to improve maintainability and align with modern programming techniques.
• Increased website responsiveness by identifying and resolving bottlenecks in server-side processes.
• Conducted thorough code reviews that promoted high-quality software development practices amongst team members.
• Optimized database queries for faster data retrieval, enhancing the efficiency of various applications.
• Designed and built microservices architecture, enabling better scalability and flexibility within the application ecosystem.

• Designed and developed robust web backend applications and APIs for clients worldwide.
• Notable Projects: Automated Enterprise Solution : Built an application integrating Amazon Marketplaces through Amazon SellerCentral API, streamlining operations for clients' customers.
  Radio Broadcast Management System : Developed a backend system with a dynamic queue for managing broadcast schedules, including third-party advertisements.
  
• Tech Stack : PHP, Symfony, Laravel, Zend, MySQL, PostgreSQL, MongoDB, RabbitMQ (RMQ), AWS, Firebase.

Enterprise-Level Solutions

• Contributed to large-scale projects in Agile environments, delivering server-side applications using modern PHP frameworks and database technologies.
• Specialized in building scalable systems leveraging both SQL and NoSQL databases.

Enhancing and Refactoring Large-Scale Booking Management Systems

• Spearheaded improvements and refactoring of Europe's largest booking management back-office system to optimize performance and maintainability.
• VOIP Integration : Developed a real-time VOIP user recognition solution for the back-office system using sockets, leveraging Node.js and PHP.
• System Modernization : Led the migration of a 1M+ line codebase from PHP 5.6.28 to PHP 7 and upgraded the framework from Zend 1 to Zend 3, ensuring compatibility and modernized functionality.
• Booking Importing System : Added new features and maintained a Python-based booking import system integrated with multiple Global Distribution Systems (GDS).

Prototyping an Online Gold Trading Platform

• Designed and developed core services for a prototype online gold trading platform, akin to FOREX trading systems.
• Integrated seamless wallet functionality into the platform to ensure secure and efficient transaction management.
• Oversaw system scalability, implementing solutions to support future growth and high transaction volumes.

MVP Development and Team Leadership

• Developed multiple Minimum Viable Products (MVPs) for clients and startups across various industries, delivering tailored solutions to meet business objectives.
• Led a team of 5 developers, providing technical direction, mentoring, and ensuring project milestones were met efficiently.

Development and Maintenance of News Portal Platform

• Designed and implemented a scalable news portal platform, delivering a user-friendly experience for content distribution.
• Monitored, managed, and optimized the platform over the years to ensure high performance, reliability, and adaptability to growing user demands.