About
I am a PhD student at Boston University and a member of Massive Data, Algorithms, and Systems Group Lab,
advised by Prof. Evimaria Terzi.
I completed my undergraduate studies at the National Technical University of Athens (NTUA),
where I worked with Prof. Dimitris Fotakis.
My research interests span the fields of Algorithms and Machine Learning,
with a focus on Submodular Optimization and Online Combinatorial Optimization.
I am also deeply interested in exploring Team Formation and Team Dynamics,
aiming to understand how groups can be effectively structured and how they evolve.
In the past, I have worked on Learning-Augmented Online Algorithms,
blending classical online algorithm design with modern machine learning techniques.
Publications
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Online Two-Stage Submodular Maximization (NeurIPS '25)
I. Nikolaou, M.Stouras, S.Ioannidis, E. Terzi
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Understanding Team Collapse via Probabilistic Graphical Models (KDD '25)
I. Nikolaou, K. Pelechrinis, E. Terzi
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Team Formation amidst Conflicts (WebConf '24, oral presentation)
I. Nikolaou, E. Terzi
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Online Submodular Optimization via Online Convex Optimization (AAAI '24)
T. Si-Salem, G. Özcan, I. Nikolaou, E. Terzi, S. Ioannidis
Experience
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Meta Platforms, Inc. — Software Engineer PhD Intern, Sunnyvale, CA, US
June 2025 – Aug 2025- Team: Ranking & Foundational AI
- LLMs for Recommender Systems
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KTH Royal Institute of Technology — Research Intern
June 2024 – Aug 2024
Advisor: Aristides Gionis- Developed opinion formation models to explain opinion alignment and polarization
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Amazon — Software Development Engineer (SDE) Intern, Dublin, Ireland
December 2021 – May 2022- Back-end development on Amazon Simple Email Service (SES)
- Developed tools for automated ticket investigations