Available to hire
Hi, I’m Iman Khatibi — an AI and Machine Learning Engineer with 3+ years of hands-on experience designing transformer-based systems, RAG pipelines, and evaluation-driven model optimization. I specialise in modular RAG architectures, fine-tuning LLMs, and improving grounding, latency, and cost efficiency in generative systems through structured experimentation.
I thrive on building robust tooling and pipelines that make AI systems reliable, safe, and scalable. I enjoy turning messy data into actionable insights and deploying production-grade AI solutions that solve real-world problems, from healthcare chatbots to data analytics platforms.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Work Experience
LLM Engineer Intern at HoFin
August 1, 2024 - December 1, 2024Designed and implemented a production-oriented mental health chatbot leveraging retrieval-augmented generation (RAG) over curated domain documents, deployed on AWS using EC2 and S3 for document storage and inference workflows. Architected modular RAG pipeline separating ingestion, chunking, embedding, vector indexing, retrieval, and response generation layers. Improved grounded response relevance by around 20% (Precision@K) through systematic tuning of chunk size, overlap, embedding model selection, and top-K thresholds. Reduced hallucination frequency in multi-turn conversations by 15% by enforcing retrieval-first generation and integrating conversational memory control. Decreased token usage per response by 12% through structured context compression and prompt refinement. Experimented with embedding and inference endpoints on Azure OpenAI and GCP Vertex AI for performance benchmarking. Built evaluation framework combining automated semantic similarity scoring and structured human rev
Data Scientist researcher at University of Iceland
January 1, 2023 - January 1, 2025Fine-tuned FLAN-T5 and BERT models on domain datasets using LoRA and mixed precision training. Improved ROUGE-L score by 9% compared to base FLAN-T5 after parameter-efficient fine-tuning. Reduced training time by 25% through mixed precision and optimized batch scheduling. Automated hyperparameter search with Optuna, reducing manual tuning cycles by around 30%. Conducted controlled experiments comparing decoding strategies (beam search, temperature scaling, length penalties) to optimize fluency vs factual alignment. Evaluated summarization and classification outputs using ROUGE, F1, and cross-validation.
Data Analyst at HoFin
February 1, 2022 - August 1, 2024Built data transformation and reporting pipelines supporting operational and product strategy. Analyzed behavioral and performance datasets to identify optimization opportunities.
AI Engineer at HoFin
August 1, 2024 - November 1, 2025Designed and implemented a production-oriented mental health chatbot leveraging retrieval-augmented generation (RAG) over curated domain documents, deployed on AWS using EC2 and S3 for document storage and inference workflows; Developed a decision-making AI agent that analyzes user messages and dynamically routes conversations to LLM responses, RAG retrieval, or human escalation using LangChain and LangGraph; Implemented core agent capabilities including tool calling, conversational state management, safety classification, and multi-step reasoning; Architected modular RAG pipeline separating ingestion, chunking, embedding, vector indexing, retrieval, and response generation layers; Improved grounded response relevance by around 20% (Precision@K) through systematic tuning of chunk size, overlap, embedding model selection, and top-K thresholds; Reduced hallucination frequency in multi-turn conversations by 15% by enforcing retrieval-first generation and integrating conversational memory
Data Analyst
February 1, 2022 - August 1, 2024Built data transformation and reporting pipelines supporting operational and product strategy. Analyzed behavioral and performance datasets to identify optimization opportunities.
Education
Master of Computer Science ( Data Science ) at University of Iceland, Faculty of Engineering
January 1, 2023 - January 1, 2025Bachelor of Computer Science at Amirkabir University (Tehran Polytechnic)
January 1, 2015 - January 1, 2020Master of Computer Science, Data Science at University of Iceland
January 1, 2023 - January 1, 2025Bachelor of Computer Science at Amirkabir University (Tehran Polytechnic)
January 1, 2015 - January 1, 2020Qualifications
Industry Experience
Software & Internet, Computers & Electronics, Media & Entertainment, Education, Professional Services, Healthcare
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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