A full-stack developer crafting modern, scalable solutions.
Since childhood, I've been fascinated by how systems work. My curiosity led me to computers, and coding soon became both my profession and my passion.
With over 14 years of experience in full-stack development, I specialize in creating scalable, secure systems that solve real-world problems. From high-security fintech applications to modern React interfaces, I bring both technical expertise and leadership experience to every project.
React and Spring Boot application digitizing marketing permission processes at Garanti Fleet. Delivered with zero security vulnerabilities using Magnolia CMS for dynamic content management.
Hybrid mobile application for pension services. Built with React Native and WebView integration, solving CSO login cache issues for seamless user experience.
Enterprise authentication infrastructure using OIDC, Kerberos and LDAP. Enabled secure login flow across all Mendix applications company-wide.
Financial messaging system for BIST swap operations. Managed end-of-day calculations and Takasbank reconciliations using SOAP and Swift protocols.
Municipal infrastructure permit system with GPS tracking and map-based analysis. Actively used by public institutions for construction permit management.
Local LLM interface running Ollama and DeepSeek models. Features LangChain and RAG integration for knowledge retrieval scenarios on resource-constrained hardware.
"The best way to predict the future is to invent it."— Alan Kay
"Semih doesn't just code – he builds systems that last. His architectural thinking and attention to detail are exceptional."
"His mentorship transformed my QA career into full-stack development. Semih has a gift for explaining complex concepts clearly."