Sefa Taşcan Email & Phone Number

Istanbul, Turkey

İstanbul, Türkiye

I work as part of the Search & Navigation team, one of the highest traffic and most critical modules of the Hepsiburada e-commerce platform. Our team develops end-to-end product-oriented applications. To ensure optimal search result representation, data workflows and machine learning operations are carried out with Apache Airflow in collaboration with data scientists, following MLOps principles. The applications are developed in Go language and are supported by multiple data-driven, high-performance microservices. Additionally, gRPC and REST API architecture are used to ensure fast and reliable communication between systems. Various ETL processes are handled using Scala-Apache Spark and Python-Apache Airflow, while high-volume stream operations are managed with Scala-Apache Flink. I am involved in the development, operation, and CI/CD processes of all these applications.

İstanbul, Türkiye

I am responsible for the development, maintenance, and ongoing enhancement of emlakjet.com’s web platform, panel, and admin applications. These applications are primarily event-driven, built with Java Spring Boot, and consist of a range of microservices. As a search-focused web application, emlakjet.com leverages Elasticsearch for efficient data retrieval. Many of the applications follow a Hexagonal architecture pattern, ensuring scalability and flexibility. Event streaming is handled through RabbitMQ, enabling seamless communication between services. Additionally, we utilize technologies such as the ELK Stack, New Relic, and Grafana for comprehensive application monitoring and performance tracking.

İstanbul, Türkiye

As part of the Huawei MAE project, I was involved in an international team of over 300 people, managed from China. We refactored a large multi-module project utilizing microservice and microfrontend architectures. REST services were developed using Huawei APIs and Java. Additionally, the interfaces for the relevant modules were designed using React and various JavaScript technologies.

İstanbul, Türkiye

I am responsible for the development of enterprise content management software systems, where Java-based web applications are developed using JSF, Hibernate, and Primefaces technologies. In addition, various REST services, scheduler applications, and integration solutions have been designed and implemented using Spring Framework technologies.

Kayseri, Türkiye

Konya, Türkiye