Hello, I am

Hasan Halacli

Senior Data Scientist | AI & ML Trainer

Who am I ?

A passionate Senior Data Scientist with extensive experience in AI and Machine Learning and Data Engineering

It is mean that, I can built end-to-end AI solutions, from data collection to deployment and maintenance.

Personal Info

  • Email : [email protected]
  • Linkedin : linkedin.com/in/hasan-h-326b5a171
  • Xing : https://www.xing.com/profile/Hasan_Halacli/portfolio?expandNeffi=true

My Expertise

Data Science

From classical ML to Deep Learning and Fine Tuning LLMs


Data Engineering

Building scalable and efficient data pipelines.


Cloud Computing

Using cloud services to build scalable and efficient solutions.


Latest from AI Insights

Why It’s Harder Than It Seems

Why It’s Harder Than It Seems

2025-06-15 · 2 min read

Generative AI (GenAI) has captivated the tech world with demos of chatbots, image creators, and code assistants. Yet moving from prototype to production uncovers a web of challenges:

Read More
View All Posts

My Resume

Expertise

2022 - Present

Senior Data Scientist

Building end-to-end AI solutions, from data collection to deployment and maintenance. Working with NLP, Vision, Audio frameworks, RAG Chatbots and LLMs (including finetuning).


2020 - 2022

Data Scientist, Full Stack Developer

NLP models (Hate Speech Detection using X data), showing result in an Web application and aldo Google extention. Building receipt evaluation system using OCR.


2019 - 2021

Data Scientist/ Assistant Teacher

Teaching AI and ML to students and colleagues. Building AI solutions for the University.

Education

2019 - 2021

Master of Science in Data Science

Duisburg Essen University of Applied Sciences


2016 - 2017

Electrical/Electronic Engineering

University of Applied Sciences

Skills

Data Science
Data Engineering
MLOps
HTML & CSS
JavaScript
SQL

Languages

English
German
Turkish

20K

Hours Worked

75

Project Finished

~

Happy Clients

2k

Coffee Drinked

My Projects

Fine Tuning Text to Image Models

Jul 2024 - Sep 2024
RTL Germany
Fine-tuned a Text to Image model for internal usage.

Skills: Fine Tuning, Large Language Models (LLM), Machine Learning, Python, TensorFlow/PyTorch.

LLM Fine Tuning

Jul 2024 - Sep 2024
RTL Germany
Fine-tuned a Large Language Model (LLM) for specific tasks to improve performance and accuracy.

Skills: Fine Tuning, Large Language Models (LLM), Machine Learning, Python, TensorFlow/PyTorch.

ASR Fine Tuning

Jul 2024 - Sep 2024
RTL Germany
Fine-tuned an Automatic Speech Recognition (ASR) model to enhance transcription accuracy.

Skills: Fine Tuning, Automatic Speech Recognition (ASR), Machine Learning, Python, TensorFlow/PyTorch.

Live Subtitling

Jul 2023 - Jan 2024
RTL Germany
Used Whisper ASR to create English translations for German videos at 5-second intervals.

Skills: Whisper ASR, Natural Language Processing (NLP), HTML, Large Language Models (LLM), VAD (Voice Activity Detection).

Multi-Agent Chatbot

Jun 2024 - Present
RTL Germany
Developed a chatbot using multi-agent systems integrating real-time data and routing.

Skills: Large Language Models (LLM), LangChain, Langsmith, Google Cloud Platform (GCP), Vector Databases, Indexing, Multi-agent Systems.

Advertisement Generator

Mar 2024 - July 2024
RTL Germany
Created a tool for generating short advertisement videos.

Key Features:
- Text parsing from URLs
- User interaction and voiceovers
- Image and clip matching with keywords using GPT-4 Vision and Turbo
- Image analysis and voice cloning

Skills: Computer Vision, Vision Embedding, GPT-4, Custom GPTs, Voice Cloning, Multi-Agent, LlamaIndex, LangChain, Langsmith.

Protagonist Detection in Media

Jan 2024 - Apr 2024
RTL Germany
Developed a system to identify the main character in videos and detect close-up shots and aesthetic scenes for thumbnails.

Skills: Computer Vision, Large Language Models (LLM), Face Detection, Actor Recognition, Face Clustering, Dimension Reduction, Aesthetic Ranking, Shot Type Detection, Google Cloud Platform (GCP).

Silence Detection

Dec 2023 - Feb 2024
RTL Germany
Implemented silence detection to enhance shot/scene detection in videos.

Skills: FFmpeg, Large Language Models (LLM), Whisper ASR, Google Cloud Platform (GCP), Microsoft Azure.

ChatBot with RAG

May 2023 - Nov 2023
RTL Germany
Key features include internal data chat, multi-format data uploads, web search and summary, user feedback, and multi-agent function calling.

Skills: LlamaIndex, RAG, Mistral7B, OpenSource LLM, Streamlit, Generative AI, OpenAI API, Microsoft Azure, Google Cloud Platform (GCP), Document Chunking, K-Nearest Neighbors (KNN).

Black Frame Detection

May 2023 - June 2023
RTL Germany
Detected black frames in videos and provided timestamps and black frame levels.

Skills: FFmpeg, Google Cloud Platform (GCP), Computer Vision.

Aesthetic Ranking

Jan 2023 - May 2023
RTL Germany
Evaluated images for aesthetic quality using a CNN-based model and clustered similar frames.

Skills: Convolutional Neural Networks (CNN), Dimension Reduction, UMAP, HDBSCAN, Google Cloud Platform (GCP), K-Means Clustering, Computer Vision, Vision Embedding.

Face Detection

Feb 2023 - Apr 2023
RTL Germany
Detected faces in video frames and identified emotions, gender, and age for thumbnail classification.

Skills: Computer Vision, Convolutional Neural Networks (CNN), Google Cloud Platform (GCP).

Topic Modelling

Nov 2022 - Apr 2023
RTL Germany
Clustered audio/text/video datasets by topic in multiple languages.

Skills: BERT, Bertopic, Natural Language Processing (NLP), Hugging Face Hub, Sentence Embedding, Language Detection, Large Language Models (LLM), Python, KeyBERT, K-Means Clustering, Dimension Reduction.

KI Interview

Dec 2022 - Feb 2023
RTL Germany
Developed an AI-driven interview system showcased on RTL.

Skills: Text-to-Speech, ChatGPT, Generative AI, Speech-to-Text, Microsoft Azure, Microsoft Azure Machine Learning, Azure Functions.

Adult Content Classification

Aug 2022 - Dec 2022
RTL Germany
Classified adult content in text/audio/video datasets using OCR.

Skills: Optical Character Recognition (OCR), Natural Language Processing (NLP), Hugging Face Hub, Language Detection, SpaCy, Sentence Similarity, Text Embedding, Regex, Whisper ASR.

Kids Content Classification

Aug 2022 - Nov 2022
RTL Germany
Classified kids/juvenile content from text/audio/video datasets.

Skills: Optical Character Recognition (OCR), Automatic Speech Recognition, Text Embedding, Hugging Face Hub, SQL, Regex.

Festivity Detection

Jun 2022 - Sep 2022
RTL Germany
Detected festivities in Germany using audio and text datasets.

Skills: Regular Expressions, Sentence Embedding, Text Embedding, Hugging Face Hub, Sentence Similarity, Language Detection, SpaCy.

Language Detection

Apr 2022 - Jul 2022
RTL Germany
Identify languages in datasets for recommendation systems.

Skills: Natural Language Processing (NLP), Tokenization, Word Embeddings, Text Embedding, Hugging Face Hub, Poetry.

Keyword Key-phrase Extraction

Feb 2022 - Jun 2022
RTL Germany
Extract keywords and phrases from text datasets.

Skills: KeyBERT, Natural Language Processing (NLP), Tokenization, SQL, Language Detection, Text Embedding, SpaCy.

Master Students Project Teaching Assistant

Apr 2020 - Jan 2022
University of Duisburg-Essen
Guide master students on NLP projects like Hate Speech and Sentiment Analysis.

Skills: Analytical Skills, Automatic Speech Recognition, Leadership, Team Leadership, Management, Educational Leadership, Organizational Leadership, Team Building, Machine Learning Algorithms, Supervised Learning, Applied Machine Learning, Human-in-the-Loop Machine Learning, Neuro-Linguistic Programming (NLP).

Churn Prediction (Master Thesis)

Jun 2021 - Dec 2021
University of Duisburg-Essen
Predict churn for a manufacturing company using big data.

Skills: Analytical Skills, Azure Functions, Data Analysis, Data Science, Dimension Reduction, Flask, Git, Machine Learning, NLTK, Churn Prediction, Cluster Analysis.

Get in touch

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