Cihan ŞAHIN

Contributed to Olympo, a large-scale network orchestration and observability platform managing thousands of network and IoT devices. Developed backend microservices (Inventory, Core, RBA, Topology, Observability) in a Kubernetes environment. Built REST and gRPC services with Java (Spring Boot) and Go, improved alerting accuracy by ~30%, and implemented asynchronous processing for high-volume metrics using message queues and the TIG stack

Developed RESTful APIs for admin dashboards and trading modules in a high-throughput backend environment. Built systems processing billions of real-time API requests and implemented asynchronous trading pipelines using Amazon SQS to handle peak traffic. Optimized PostgreSQL analytical queries for Fan Token metrics, improving performance by ~40%, and integrated Gate.io via REST and WebSockets for real-time market synchronization.

Contributed to large-scale e-commerce and payment platforms serving millions of users and high-volume global transactions. Developed and maintained high-traffic backend services and APIs integrating marketplaces, payment providers, logistics, ERP, and CRM systems. Designed scalable workflows improving onboarding speed and reliability, and optimized performance, monitoring, and operational stability for mission-critical commerce and secure one-click payments.

Developed and maintained backend services and APIs for a mid-scale online education platform with thousands of users. Built secure authentication, content management, and real-time features to improve reliability and user experience. Designed data processing and reporting pipelines for analytics and business insights, and delivered a full CRM system with core business modules and third-party integrations across the full development lifecycle.