kaan hacihalilogluistanbul
000%leaving deep space

ai engineer and grad student. i work on refusal and safety in llms through interpretability, and at SCL on a new way of doing market research.

the story so far
2018 – 2023

boğaziçi

physics, on a hill over the bosphorus. loved the research and the inspiration from my profs, one of the best decisions i made in my life. in the EarthML research group Arkadaş hoca taught us machine learning and deep learning, and i worked on earthquake detection models and extensive data analysis. i also taught numerical methods, and once we even turned seismic data into an art exhibition. then i continued down the data science path, with internships at Allianz and Live The World.

the habit

physics left me one habit: when something works, i want to know what is actually happening inside it. first it was physics, then earthquakes, now language models. same question.

2023 – 2024

padova

a computer science master's in padova. i didn't quite like the program, or let's say i didn't fit in. after the first year of coursework i didn't want to do any research there, maybe i couldn't meet the right people at that time. the long version is on the blog, in turkish.

2025 –

sabancı

back in istanbul, a data science msc at sabancı. working with Dilara Keküllüoğlu, i had my research spark again, with refusal dynamics and poisoning attacks on llms. my thesis is on the same topic with more interpretability candies on top: i look at what's happening while a model refuses a harmful request and try to make sense of the math inside it. i am also a ta for quantum programming on the side.

back in istanbul i also met Berkan Cesur, who taught me a lot about product development. can't lie, amazing person and insane inspiration. in one year with him i got experience in web development, app development, product cycles and a lot more.

2025 –

now

days are SCL. i started as an ai engineer, and with time i took on more responsibility, so i could say i am a bit more than that now. Ömer Ülgen, our ceo, is one of the sharpest people i have worked with, and from Sinan Ülgen i am learning a lot about customer relationships and working B2B. nights are still the thesis.

experience
2025 –

AI Engineer · Synthetic Consumer Lab

Engineering lead responsible for the full product stack: backend, frontend, AI systems, and statistical methodology.

+ detail− detail
  • Architected the platform on Laravel, Python/FastAPI, and Redis
  • Built agentic systems for market research, and synthetic consumer personas grounded in real demographic and behavioral data
  • Built agnus, an AI agent for market research
2025 – 2026

Teaching Assistant · Sabancı University

Teaching assistant for Quantum Programming, guiding students through quantum computing concepts, circuit design, and hands-on implementation with quantum programming frameworks.

2024 – 2025

AI Engineer / Data Scientist · SoundBoost

Designed and deployed deep learning models for audio source separation, classification, and acoustic event detection.

+ detail− detail
  • Built end-to-end AI pipelines, with Django backends for model serving and JavaScript for real-time inference
  • Led development of AI agents for complex audio processing workflows
  • Built SoundBoost's free tools, including Loudness Penalty and a LUFS meter
2023

AI Engineer Intern · Live The World

Built content generation pipelines using LLMs and web scraping.

+ detail− detail
  • Improved the web scraping stack and developed Python tools for AI-driven applications
2022 – 2023

Data Analytics & Process Mining Intern · Allianz TR

Automated Excel reporting workflows with Python and SQL, built dashboards for operational visibility, and optimized business processes with Celonis process mining.

2020 – 2022

Research Assistant · Boğaziçi University

Worked on feature engineering and transformer-based architectures for seismic data analysis and earthquake detection.

+ detail− detail
  • Contributed to the paper arXiv:2407.18402
2021 – 2022

Teaching Assistant · Boğaziçi University

Led problem sessions for Numerical Methods, teaching NumPy, SciPy, and Matplotlib through hands-on problem solving.

education
2025 –

M.Sc. in Data Science · Sabancı University

Thesis on the mechanistic interpretability of large language models: how refusal and related concepts are represented geometrically in a model's internal activations. Coursework in advanced deep learning and statistical analysis.

2023 – 2024

Graduate Studies in Computer Science · University of Padua

Completed the first year of the M.Sc. program, with coursework in artificial intelligence, deep learning architectures, and algorithmic problem solving.

2018 – 2023

B.Sc. in Physics · Boğaziçi University

Member of the EarthML research group and the Science Club.

projects

TÜBİTAK 2209-A

Developed an earthquake detection model, with most of the work in feature engineering.

Earth-ML

Time series classification for geophysical data.

Kaggle ML Challenge

8th place in the Türkiye İş Bankası ML Challenge 5, mainly through feature engineering.

Datathon AI

3rd place in a computer vision competition.

NLP News Summarization

Comparative evaluation of BART and T5 for summarization.

"Burası" Art Exhibition

Turned seismic data into artwork for an exhibition.

skills
programming
Python, SQL, JavaScript, TypeScript
ml / dl
PyTorch, XGBoost, CatBoost
ai / llm
LLM APIs (OpenAI, OpenRouter), LangChain, LangGraph, Transformers
interpretability
TransformerLens, nnsight, activation/ablation analysis
backend
FastAPI, Laravel, Django, Celery, Redis
scientific
NumPy, SciPy, Matplotlib, Pandas
hpc
Slurm, multi-GPU / distributed training
tools
Git, Docker, Linux
certifications
Quantum Computing (Bronze)QTurkey
Excellence in AudioHugging Face
Process MiningCelonis Academy
Building RAG AgentsNVIDIA DLI
languages
Turkish (native) · English (fluent)