About

Hello, I'm Miltos

Miltiadis Stefanidis

Quantitative UX Researcher & Behavioral Scientist

I'm driven by an endless curiosity about how people think, decide, and interact with technology. Rooted in experimental psychology, behavioral economics, and data science, I turn "messy" behavioral signals into crisp, actionable insights that help product teams ship experiences users love.

At Advisor360°, Harvard Business School, and UCL, I've built research programs that reveal not just what users do, but why. Whether I'm mapping end-to-end journeys, designing large-scale experiments, or building real-time dashboards, I blend empirical rigor with human empathy to translate complex findings into clear product strategy.

My toolkit spans quantitative research, predictive modeling, and interactive analytics. By fusing cognitive science with computational methods, I help teams cut through noise, challenge assumptions, and make data-informed decisions that move the metrics that matter.

Beyond Work

Playing Instruments
Economics
Coding
Volunteering
8+Years Experience
50+Research Projects
25+Research & Data Methods

Experience

Advisor 360°

Advisor 360°

Quantitative Researcher / Data Analyst (UX/ML)

Led quantitative UX research, integrating CRM/GA data, applying ML to optimize financial tools and feedback analysis, and mapping user value to drive data-informed product decisions.

March 2022 - March 2025
Harvard Business School

Harvard Business School

Research Associate (Arthur Rock Center for Entrepreneurship)

Piloted research on startup performance metrics using survey data (Crunchbase, PitchBook), developing insights that informed revitalized engagement strategies and survey design.

January 2020 - October 2020
UCL School of Management

UCL School of Management

Research Associate (Organizational Psychology and Risky Decision Making)

Pioneered organizational risk perception studies, deployed innovative experimental techniques, and collaborated with industry leaders to uncover key insights into decision-making.

January 2016 - September 2019
AHEPA University Hospital

AHEPA University Hospital

Research Assistant (Experimental Psychology)

Headed research on cognitive assessment and neuropsychological testing, designing experimental protocols to investigate the behavioral consequences of dopamine medication on cognitive flexibility in Parkinson's Disease patients.

February 2014 - April 2015

Education

University College London, UK

University College London, UK

Master of Science in Cognitive and Decision Sciences

MSc Grade: 3.8 USA GPA Advanced Student Academic Representative (StAR)

2015 - 2016
University of Sheffield, UK

University of Sheffield, UK

Bachelor of Science (Hons) in Psychology

BSc Grade: First Class Honors; 4.0 USA GPA First Class Representative

2011 - 2014

Volunteering

Harvard Business School, Boston, MA, USA

Harvard Business School, Boston, MA, USA

Online Learning Facilitator for Prof. Brian Hall's module, Behavioral Approaches to Decision-Making

Collaborated with HBS faculty to streamline course delivery for 20 PhD students and led the effective adoption of Zoom and other remote learning tools, preserving classroom engagement during distance learning.

March 2020 - June 2020
London Science Museum, London, UK

London Science Museum, London, UK

Project Coordinator for UCL's Institute of Cognitive Neuroscience Pocket Smile Residency

Directed a team of 10 Masters students in a novel cognitive intervention study, achieving record-breaking engagement rates while conducting rigorous regression analysis to correlate intervention data with established neuroimaging findings.

September 2016 - December 2016

Skills & Tools

  • Building robust, efficient applications
  • Creating data pipelines and APIs
  • Optimizing code for performance and scalability

Python

Scripting, data analysis, ML prototypes

SQL

Relational queries, schema design, ETL

MATLAB

Scientific computing, prototyping

C/C++

High-performance apps, embedded systems