kaan hacihalilogluistanbul
000%leaving deep space

about

studied physics in undergrad, loved the research and the inspiration from my profs at boğaziçi. one of the best decisions i made in my life was studying physics at boun. thanks to Haluk Beker, Alpar Sevgen, Arkadaş Özakın and many more.

while i was studying, Arkadaş hoca taught us machine learning and deep learning in the EarthML research group, where i worked on earthquake detection models and extensive data analysis. i decided to continue down the data science path and did internships at Allianz, and at Live The World, a startup, as an ai engineer.

i started a master's in cs at Padova but didn't quite like the program, or let's say i didn't fit in. after my first year of coursework i didn't want to do any research there, maybe i couldn't meet the right people at that time. i came back to istanbul, to Sabancı for a data science master's, and started working with Dilara Keküllüoğlu. thanks to her i had my research spark again, with refusal dynamics and poisoning attacks on LLMs.

now i am working in a research group on refusal dynamics, and my thesis is on the same topic with more interpretability candies on top. what this means: i look at what's happening while a model refuses a harmful request and try to make sense of the math inside the model. it kind of feels like physics inside an llm architecture, but this is not a definition at all, just me reassuring myself.

i met Berkan Cesur when i came back to istanbul and he 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.

then i started at SCL as an ai engineer. 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.

currently
2025

refusal geometry in llms

msc thesis at sabancı university, on how refusal behavior and safety representations are encoded inside large language models.

2024

SCL, synthetic consumer lab

building synthetic consumer systems for behavior simulation and market research workflows, with a great team.

2024

soundboost

ai engineer on an audio mastering platform, a virtual mastering engineer for musicians. worked on the free tools and the stem splitter, with cool people.

online i am khdoex on github, and kaanhho most other places (x, hugging face, linkedin).