• Enhanced and maintained the CRM web application for a leading UK pay-weekly home furnishing provider.• Modernized legacy systems and built a customer portal, improving user engagement by 30%.Integrated secure direct debit payment solutions, enhancing transaction security and customer trust.• Expanded CRM functionality, contributing to operational efficiency and customer satisfaction.• Managed cloud server infrastructure and implemented DevOps practices, reducing deployment times by 25%.Technologies: PHP, Preact, React.js, Material-UI, Cloud Services, DevOps

• Led the design and implementation of an online retail arbitraging, ordering, shipping, and inventory management system using domain-driven design and Kubernetes for scalability and reliability.• Developed an ETL pipeline processing over 100 million listings daily, increasing data processing efficiency by 20%.• Achieved seamless API integrations with major e-commerce platforms and logistics providers, facilitating real-time pricing optimization and data synchronization.• Implemented Infrastructure as Code, reducing deployment times by 25% and improving code maintenance.• Administered multiple SQL, NoSQL, and Graph databases on bare-metal servers, ensuring high availability and performance optimization.Technologies: Laravel, React.JS, Python, Kubernetes, ETL Pipelines, API Integration, Infrastructure as Code, SQL/NoSQL Databases

• Developed and maintained a comprehensive e-commerce fulfillment and integration system with Turkey's leading online marketplaces.• Implemented agile development practices, enhancing team collaboration and project delivery efficiency.• Improved developer onboarding and talent retention by 40% through comprehensive internal documentation of REST APIs and core business models.Technologies: Full-Stack Development, Agile Methodologies, REST APIs, Documentation

• Executed a seamless transition from a legacy B2B e-commerce platform to a modern system with zero downtime.• Integrated multiple online payment gateways securely, prioritizing transaction data security.• Developed a high-performance streaming ETL pipeline for efficient data migration, automating the process and speeding it up by 70%.• Enhanced developer onboarding through detailed documentation of the new system.Technologies: B2B E-commerce, Payment Gateway Integration, ETL Pipelines, Data Migration

• Contributed to the development of a GIS-based land management system, enhancing efficiency in land registration and survey processes.• Implemented workflow automation, significantly improving operational efficiency and data accuracy.• Developed a user-friendly, mobile-optimized web portal, increasing accessibility and user engagement.• Managed geospatial data integrity, ensuring high-quality and accurate large parcel datasets.Technologies: Django, jQuery, Bootstrap, Leaflet, PostgreSQL with PostGIS, QGIS, ArcGIS, Git, Azure, GitLab CI/CD

• Developed and launched an Online Journal Management System, serving over 500 academic users.• Automated manuscript, peer review, and publication processes, reducing processing time by 40%.• Customized Open Journal Systems (OJS) to align with university-specific workflows.Technologies: OJS, PHP, Python, jQuery, Bootstrap, MySQL, VSCode, Postman, CircleCI, GitHub