Atakan Arda Celik

Software Developer at EPAM Systems

Developed a customizable order management solution in Java, implementing GraphQL APIs and backend components aligned with customer-specific requirements. Designed and executed comprehensive API test scenarios using Postman and implemented unit tests to improve reliability and maintainability. Collaborated in an international Agile team, clarified requirements via documentation analysis, and contributed to sprint delivery by tracking Jira tickets.

Software Development Intern at C System Software and Information Technologies

Built a full-stack customer feedback web application to evaluate the company's products. Implemented backend CRUD workflows and server-side validation using C# and ASP.NET MVC and integrated the data layer with Entity Framework and Microsoft SQL Server. Developed the frontend with HTML, CSS, and JavaScript, creating an interactive user interface.

IT Intern at Yokogawa

Supported day-to-day operations and maintenance of ICT infrastructure, including network upkeep and software rollout and testing activities. Assisted with Server Manager administration on Windows Server to ensure reliable domain integration of company PCs and provided remote technical support for user issues. Configured Microsoft Hyper-V virtual machines to test technical specifications on Linux (Ubuntu).

Software Engineer at EPAM Systems

Developed a customizable order management solution in Java, implementing GraphQL APIs and backend components aligned with customer-specific requirements. Designed and executed comprehensive API test scenarios using Postman, integrated unit tests, and analyzed and resolved production issues to improve overall system reliability. Collaborated in an international Agile team, clarified requirements through documentation analysis, and supported sprint delivery by managing Jira tickets.