MELIH UNSAL

MELIH UNSAL

Mentor
Rising Codementor
US$25.00
For every 15 mins
ABOUT ME
Lead AI Engineer
Lead AI Engineer

Hi! I'm Melih.

Lead Applied AI Engineer with 9+ years of experience across machine learning, computer vision, LLM systems, agentic AI, and production backend engineering.

Specializes in designing and shipping complex AI systems end to end, including multi-agent architectures, RAG and GraphRAG pipelines, MCP integrations, durable workflow orchestration, model fine-tuning, custom inference, semantic retrieval, and cloud-native deployment.

Creator of DemoGPT, an open-source framework for prompt-driven AI application development with 1.9K+ GitHub stars, 100K+ PyPI downloads, and citations in multiple research papers. Combines deep ML expertise with strong production engineering discipline across Python, FastAPI, LangGraph, LangChain, Temporal, vector databases, knowledge graphs, and AWS/GCP infrastructure.

OPEN SOURCE

DemoGPT (⭐1.8K+ GitHub Stars)

Created an open-source framework that enables developers to build prompt-driven AI applications through an intuitive workflow-based approach. The project has attracted more than 1,800 GitHub stars, reflecting strong adoption within the AI developer community and a commitment to making modern LLM application development more accessible.

English
Istanbul (+03:00)
Joined March 2024
EXPERTISE
10 years experience
9 years experience
4 years experience
8 years experience
10 years experience
5 years experience
Agentic frameworks
4 years experience

REVIEWS FROM CLIENTS

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EMPLOYMENTS
Lead AI Engineer
Avenga
2025-10-01-Present
  • Architected and implemented agentic workflows for simulation-code generation, designing document-to-code pipelines that translate...
  • Architected and implemented agentic workflows for simulation-code generation, designing document-to-code pipelines that translate structured and unstructured inputs into executable outputs through multi-step LLM orchestration.
  • Built and evaluated code-generation agents using custom agentic architectures, benchmarking performance, reliability, and developer ergonomics against Claude Code SDK to guide tooling and workflow decisions.
  • Developed MCP tools and reusable Claude skills to extend agent capabilities, improve task specialization, and enable structured human-in-the-loop and automated execution flows.
  • Leveraged LangChain and custom orchestration patterns to coordinate planning, tool usage, context handling, and multi-stage reasoning across backend AI workflows.
  • Orchestrated long-running, multi-step agent workflows with Temporal and Prefect for durable execution, retries, and observability across document-to-code pipelines.
  • Built large-scale data processing pipelines with Apache Beam and integrated GraphRAG and LightRAG for graph-structured retrieval over technical documentation to ground code generation.
  • Built production-oriented backend services with FastAPI to expose agent functionality through clean APIs, supporting integration, testing, and scalable deployment patterns.
  • Developed frontend interfaces in React to enable interaction with agent workflows, document ingestion pipelines, and generated code outputs for faster internal iteration and usability testing.

Tech Stack: Python, LangChain, Claude Code SDK, MCP (Model Context Protocol), Claude Skills, RAG, knowledge graphs, vector DB, GraphRAG, LightRAG, HippoRAG, Temporal, Prefect, Apache Beam, FastAPI, React, GCP

Python
SQL
Node.js
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Python
SQL
Node.js
PostgreSQL
TypeScript
React
Graph Algorithms
Fastapi
Knowledge graphs
AWS
Langchain
Vector databases
Vertexai
Langgraph
RAG
Langsmith
Rag Based architectures
Temporal fusion
Mcp connections
Langfuse
Gcp cloud composer
Claude code
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Lead AI Engineer
Proxify
2023-03-01-2025-10-01
  • Architected and deployed a multi-agent LLM architecture for automated content generation, leveraging LangChain/ LangGraph to orch...
  • Architected and deployed a multi-agent LLM architecture for automated content generation, leveraging LangChain/ LangGraph to orchestrate planner → agent → aggregator workflows with web scraping, search, and enrichment pipelines.
  • Designed and scaled Retrieval-Augmented Generation pipelines combining Pinecone vector databases with Neo4j knowledge graphs, applying GraphRAG and LightRAG for graph-structured retrieval to enable context-rich, real-time reasoning. Applied Matryoshka Representation Learning to optimize retrieval efficiency while reducing storage cost.
  • Built automated content-generation pipelines producing SEO-optimized articles on casino games, betting, and football for iGaming and betting platforms, tailoring tone and structure to each vertical.
  • Designed and optimized casino game algorithms, balancing fairness, payout logic, and engagement mechanics while validating behavior through simulation and statistical analysis.
  • Implemented custom inference pipelines tightly integrated with internal databases and deployed to AWS (EC2, Lambda, CI/CD) for low-latency, production-grade performance.
  • Translated complex domain rules into machine-readable logic, creating structured representations for regulatory and policy-driven automation tasks. Built dynamic ETL pipelines with Apache Beam for real-time synchronization between PostgreSQL and Neo4j, orchestrated with Prefect and Temporal for durable, observable scheduling.
  • Fine-tuned and optimized generative models using PEFT and LoRA techniques to achieve domain-specific outputs with minimal resource overhead.

Tech Stack: Python, LangChain, LangGraph, Pinecone, Neo4j, GraphRAG, LightRAG, Matryoshka Representation Learning, PEFT, LoRA, Apache Beam, PostgreSQL, Prefect, Temporal, AWS (EC2, Lambda, CI/CD)

Python
SQL
PostgreSQL
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Python
SQL
PostgreSQL
Neo4j
Docker
OpenAI
Fastapi
Streamlit
AI
AWS
Langchain
Langgraph
Fastapi + backend
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AI Data Trainer
Turing
2023-12-01-2024-10-01

Contributed to large-scale language model training focused on improving coding capabilities, reasoning quality, and production inferen...

Contributed to large-scale language model training focused on improving coding capabilities, reasoning quality, and production inference.

  • Prepared large code-based training datasets supporting language model fine-tuning.
  • Researched parameter-efficient transfer learning techniques that improved convergence while reducing computational requirements.
  • Optimized inference performance and memory utilization for large conversational models.
  • Implemented transformer-based improvements for code understanding and context-aware response generation.
  • Evaluated model performance across diverse programming and natural language tasks to improve reliability and response quality.

Technologies: Python • PyTorch • Transformers • LLM Training

Python
PyTorch
Llm building and deployment
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Python
PyTorch
Llm building and deployment
Llm agents
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PROJECTS
DemoGPT
2023
Created an open-source agent framework that generates runnable LLM applications from natural-language prompts. 1.9K+ GitHub stars 100K+...
Created an open-source agent framework that generates runnable LLM applications from natural-language prompts. 1.9K+ GitHub stars 100K+ PyPI downloads Referenced in 8 research papers Built around LangChain/LangGraph-style orchestration, tool usage, multi-step agent execution, and prompt-driven application generation Implemented automated deployment to AWS Fargate for scalable containerized execution Own architecture, implementation, packaging, documentation, release management, and community-facing development Skills & Technologies: Python · LangChain · LangGraph · OpenAI · Streamlit · AWS Fargate · Agentic AI · LLM Applications https://github.com/melih-unsal/DemoGPT
Python
OpenAI
Streamlit
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Python
OpenAI
Streamlit
AWS
Langchain
LLM
Langgraph
Agentic frameworks
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