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Kerim Berkay Buçan — Software Engineer

Kerim Berkay Buçan

Software Engineer

Istanbul, Turkey

About

"Engineering reliable systems by day, researching machine learning by night."

Software Engineer with experience in building scalable backend systems using .NET Core and ASP.NET Core. Skilled in RESTful API development, real-time communication, and database-driven applications. Experienced in Virtual POS integrations, subscription and recurring payment systems, and Ministry of Health–compliant healthcare platforms. Currently pursuing an M.Sc. in Software Engineering (thesis stage) with research experience in machine learning and deep learning. Hands-on experience with cloud services, CI/CD pipelines, and AI integrations including ChatGPT and AWS Bedrock.

3+
Years of
Experience
4
Companies
Worked
3
Academic
Publications
3rd
Faculty
Ranking

Experience

Software Engineer

Resolution7  ·  Istanbul

Backend Development & Architecture

  • Developed and maintained .NET Core-based RESTful APIs for enterprise-grade applications; built scalable, modular web applications using ASP.NET MVC.
  • Established event-driven architectures and asynchronous messaging with RabbitMQ.
  • Designed WebSocket-based infrastructures for real-time data transmission and live notifications.
  • Managed high-volume MS SQL Server databases with a focus on performance optimization and strict data integrity.

Healthcare Domain & Compliance

  • Designed and developed a Ministry of Health-compliant Remote Healthcare Information System from scratch.
  • Engineered core modules: video consultations, appointment scheduling, prescription management, and comprehensive medical records.
  • Ensured KVKK-compliant data processing with role-based authorization and secure authentication.

Payment & Subscription Systems

  • Built secure Virtual POS integrations supporting 3D Secure, one-time payments, and complex installment scenarios.
  • Designed end-to-end subscription and recurring payment management systems including full lifecycle management, renewals, and cancellations.
  • Engineered payment flows covering callbacks, authorization, capture, reconciliation, and error-handling.

API Integration & Documentation

  • Created robust integration APIs for seamless system connectivity and authored comprehensive technical documentation for internal and third-party integrations.

Software Development Specialist

Plucky Technology  ·  Istanbul

  • Developed web applications using ASP.NET Core with a focus on scalability and maintainability.
  • Designed and implemented RESTful APIs for backend service integration and external system communication.
  • Integrated AI services using ChatGPT and AWS Bedrock APIs into enterprise applications.
  • Utilised AWS services including CloudWatch, Cognito, Load Balancer, and Bedrock for cloud-native solutions.
  • Implemented authentication and authorization workflows using AWS Cognito.
  • Managed and optimised CI/CD pipelines using Azure DevOps.
  • Performed MS SQL Server database design, management, and performance optimisation.

Junior Software Engineer

Codevist Technology  ·  Istanbul

  • Developed console applications in C# to automate internal data processing workflows.
  • Built web scraping pipelines using Selenium to collect, parse, and structure large-scale datasets from external sources.

Education

M.Sc. in Software Engineering

In Progress

Bandırma Onyedi Eylül Üniversitesi  ·  Balıkesir, Turkey

09/2024 – 07/2026 (Expected)  ·  Thesis Stage

Focusing on advanced software architecture and engineering methodologies. Currently in thesis stage with research spanning machine learning and deep learning applications.

B.Sc. in Software Engineering

GPA 3.47 / 4.00

Bandırma Onyedi Eylül Üniversitesi  ·  Balıkesir, Turkey

09/2020 – 07/2024  ·  Graduated 3rd in Faculty

Core curriculum covering algorithms, data structures, software engineering, databases, and operating systems. Held leadership roles in student organisations contributing to project management and team coordination.

Chairman · Software Engineering Society

Leadership

Bandırma Onyedi Eylül Üniversitesi  ·  Balıkesir, Turkey

01/2023 – 07/2024

Skills

Backend Development

C#.NET CoreASP.NET Core RESTful APIWebSocketsRabbitMQ Microservices

Cloud & DevOps

AWS CognitoAWS CloudWatchAWS S3 AWS BedrockAzure DevOpsCI/CD DockerIISGit

Data & Monitoring

MS SQL ServerT-SQLRDBMS Design ElasticsearchLoggingMonitoring

AI & Machine Learning

PythonMachine LearningDeep Learning OpenAI APIFeature SelectionR MATLAB

Domain Expertise

Healthcare IS (HIS)Virtual POS 3D SecureRecurring Payments KVKK Compliance

Publications

Multi-Class Liver Disease Classification Using a Hybrid Deep Learning Framework Based on YOLO and CaiT Transformer Architectures

Signal, Image and Video Processing  ·  Preprint
View on Research Square

Classification of Anemia Using Machine Learning and Feature Selection

International Journal of Advanced Natural Sciences and Engineering Researches
View Publication

Classification of Tea Leaves with Deep Learning

10th International ARTEMIS Scientific Research Congress
View Congress