I am a Full Stack Developer and AI/ML Engineer with 16+ years of experience building scalable web applications and AI-powered solutions. I enjoy turning ideas into robust, maintainable code using modern web technologies, mobile development, and pragmatic ML model training. I actively work on LLM fine-tuning, prompt engineering, and RLHF workflows, and I thrive in collaborative, distributed teams delivering production-ready solutions for diverse clients.

UMRAN KÖSEOĞLU

I am a Full Stack Developer and AI/ML Engineer with 16+ years of experience building scalable web applications and AI-powered solutions. I enjoy turning ideas into robust, maintainable code using modern web technologies, mobile development, and pragmatic ML model training. I actively work on LLM fine-tuning, prompt engineering, and RLHF workflows, and I thrive in collaborative, distributed teams delivering production-ready solutions for diverse clients.

Available to hire

I am a Full Stack Developer and AI/ML Engineer with 16+ years of experience building scalable web applications and AI-powered solutions. I enjoy turning ideas into robust, maintainable code using modern web technologies, mobile development, and pragmatic ML model training.

I actively work on LLM fine-tuning, prompt engineering, and RLHF workflows, and I thrive in collaborative, distributed teams delivering production-ready solutions for diverse clients.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

Turkish
Fluent
English
Advanced

Work Experience

Freelance Full Stack Developer & AI Engineer at Self-Employed
January 1, 2009 - Present
Developed and deployed 20+ web applications using React, Next.js, Node.js, and Go; integrated AI/ML features including LLM APIs (OpenAI, Claude) for chatbots and content generation; performed LLM fine-tuning and prompt engineering for domain-specific applications; built Android applications using Kotlin with MVVM architecture and Jetpack libraries; conducted code reviews, model evaluations, and quality assurance testing; collaborated with international clients to deliver scalable, production-ready solutions. Key projects included MasrafPaylas (Expense Sharing Platform) and OKUMAKS (Educational Platform).

Education

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Qualifications

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Industry Experience

Software & Internet, Education, Media & Entertainment