Ibrahim Emre Polat

I developed enterprise backend systems using .NET 9 and Clean Architecture with clear separation across Domain, Application, Infrastructure, and Web layers. The system was built around the CQRS pattern with MediatR, including validation, authorization, logging, and transaction pipelines, and exposed through RESTful APIs using ASP.NET Core Minimal APIs with OpenAPI/Swagger.

I applied Domain-Driven Design principles, implemented JWT-based authentication with refresh tokens, and designed a multi-tenant architecture with tenant-scoped data isolation. Data access was managed with Entity Framework Core and SQL Server using code-first migrations, Repository, and Unit of Work patterns, along with soft-delete and audit trail mechanisms.

The platform integrates Azure Blob Storage, SendGrid, Twilio, and OpenAI API, and uses background workers with queue-based asynchronous processing. Performance and maintainability were supported with Serilog, Azure Log Analytics, MemoryCache, ClosedXML, FluentValidation, and AutoMapper.

I worked as a Backend Developer for the Aldi Deals platform, handling all backend responsibilities. The system is built with ASP.NET Core using a DB-first and microservices approach, with separate services for payments, users, and messaging. I integrated Keycloak for authentication and authorization, Payone for payments, and ETC for code validation. We use Azure Service Bus, Blob Storage, and WAF, while content is managed through Umbraco CMS. The platform runs in containers orchestrated by Kubernetes.

I led a team as a Senior Backend Developer during a successful migration of Java-based software to the Microsoft .NET framework. I developed and implemented solid solutions to transition existing software systems, enhancing both efficiency and performance. Working closely with cross-functional teams, I analyzed requirements and designed strategies for seamless integration. I also executed code reviews and offered technical guidance to junior developers, ensuring we met our project milestones on time. We continue to advance our developments in line with SOLID principles.

I took a deep dive into various projects, clearly defining their scope and picking the right technologies for implementation. I designed a database schema that optimized how we store and retrieve data efficiently. Using a microservice architecture, I developed the projects, ensuring that the business logic and functionality aligned perfectly with the requirements.

I also integrated with third-party e-commerce and logistics platforms such as Shopify, ETSY, ShipStation, DHL, USPS, UPS, and FedEx, enabling seamless order processing and warehouse operations in the USA. As part of these projects, I built distributed systems using Azure Functions, Azure Service Bus, and Azure Blob Storage, ensuring scalability and reliability.

I took the lead in designing and developing the backend services for an online grocery delivery platform using ASP.NET. My goal was to create a system architecture that was not only robust and scalable but also secure. A big part of this project involved integrating the platform with suppliers' systems, which helped automate order generation, keep product availability in sync, and make order processing workflows much smoother. I also set up a secure online payment gateway, allowing customers to complete their transactions effortlessly while adhering to industry security standards. Throughout the development journey, I prioritized performance optimization, reliability, and ease of maintenance, laying down a strong foundation to support the platform's growth.

I provided expert advice and guidance in the realms of information technology and electronic commerce to various businesses. My focus was on helping them harness technology to enhance their operations and reach their e-commerce objectives. I led efforts in strategic planning, system architecture design, software selection, process optimization, and crafting digital marketing strategies.

Additionally, I conducted ISO 27001 consulting to help organizations implement and maintain compliance with this international standard. I guided businesses in understanding the requirements of ISO 27001, performing risk assessments, developing security policies and procedures, implementing necessary controls, and preparing for certification audits. My goal was to establish strong information security management systems that protect sensitive data, mitigate risks, and ensure the confidentiality, integrity, and availability of information assets.

I took the lead in designing and developing a tailored system architecture for e-commerce, which included all the necessary components, modules, databases, and interfaces. This was all aimed at ensuring everything runs smoothly, securely, and integrates seamlessly with other systems. I also put into place strategies for managing customer relationships, allowing us to gather and analyze customer data, keep track of interactions, and create effective communication channels. The goal was to boost satisfaction, foster loyalty, and provide personalized experiences.

I set up a centralized IT structure to link all the companies in our group, making sure our systems were integrated and that we could provide solid support for a variety of needs. I led a skilled IT team, managing resources, guiding our efforts, and ensuring that projects were executed successfully while smoothly integrating new technologies. To keep our critical systems running without a hitch, I put in place monitoring systems, carried out maintenance, and quickly addressed any disruptions. I also took the lead on the Netsis ERP project in the production department, tailoring it to streamline processes, improve resource allocation, and enable real-time monitoring to boost productivity.

I played a crucial role in developing and improving our existing software solutions by actively engaging with the team. I collaborated with my colleagues to roll out new features and enhance the performance of our software. I also evaluated and integrated the right software applications into our IT infrastructure. On top of that, I provided end-user support by troubleshooting technical issues, answering questions, and guiding users on how to make the most of the software. I implemented solid security measures, including secure networks, firewall systems, authentication protocols, and logging mechanisms. Additionally, I prepared detailed reports for management on security incidents, vulnerabilities, and proactive steps we could take to improve our overall security.