Sergazy Nurbavliyev

Sergazy Nurbavliyev

Mathematician | AI/ML Specialist | Google Hackathon Grand Prize Winner | Entrepreneur | Turning research into real-world AI solutions

8+
Years Experience
50+
Projects Completed
25+
ML Models Deployed
15+
Team Members Led
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About Me

Sergazy Nurbavliyev
AI
ML
5+
Years Experience
$20M+
Revenue Impact
15+
ML Models Deployed
2
Publications

Passionate About AI Innovation

Senior ML Researcher (PhD, Math) with 5+ years of experience delivering ML, DL, RL, and LLM systems at scale in e-commerce and advertising. Led agent-based LLMs and pricing/ad tech optimizations driving $20M+ revenue. Strong academic background in probability theory, stochastic processes, combinatorics, statistical mechanics, nonparametric statistics, and Bayesian modeling.

Key Achievements

Industry Recognition

Featured in top AI conferences and publications

Business Impact

Delivered $10M+ in measurable business value

Team Leadership

Led cross-functional teams of 15+ professionals

Innovation

Pioneered cutting-edge ML solutions and frameworks

Professional Experience

A journey through innovative companies where I've built scalable AI solutions and led high-performing teams

Senior Machine Learning Researcher

Beyond (formerly Overstock.com)

Beyond (formerly Overstock.com) logo
Feb 2023 - Present
Salt Lake City, UT
Built and deployed XGBoost-based CTR model improving AUC and click prediction precision, leading to +8% CTR and millions in added ad revenue
Developed Overstock's first CVR model integrated with ad ranking achieving +15% purchase rate from ad clicks
Led AI-powered product content optimization platform with 97% taxonomy classification accuracy, saving 20+ hours/week
Created hybrid XGBoost + logistic regression model for personalized email coupons resulting in +3.6% revenue, +19% profit in A/B test with 10M customers
Built dynamic pricing engine for 100K+ SKUs with LightGBM elasticity + integer linear programming delivering +4–7% profit improvement
Technologies Used:
PythonXGBoostLightGBMBigQueryAirflowDockerGCPLLMGenerative AI

Machine Learning Scientist

Overstock.com

Overstock.com logo
Oct 2020 - Feb 2023
Salt Lake City, UT
Developed deep neural network & transformer-based sales prediction for millions of products achieving +6% revenue ($150M), +4% profit ($10M)
Combined churn probability prediction with future spend forecasting using gradient boosting and isotonic regression for CLV estimation
Created probabilistic pricing/discount model resulting in +20% processing efficiency
Implemented image hashing deduplication system reducing duplicate listings by 95%
Improved competitor match tagging from 30% to 70% using image/text embeddings
Technologies Used:
PythonTensorFlowPyTorchTransformersGradient BoostingImage ProcessingText Embeddings

Ph.D. Student in Mathematics

University of Utah

University of Utah logo
Aug 2016 - Dec 2020
Salt Lake City, UT
Developed mathematical models governing the evolution of systems with complex interactions
Built quantitative models of infinite systems to maximize energy paths
Conducted research in probability theory, stochastic processes, and statistical mechanics
Published research on random walk in random potential with shape theorem and variational formula
Technologies Used:
PythonRMathematical ModelingProbability TheoryStochastic ProcessesStatistical Analysis

Mathematics Instructor

Suleyman Demirel University, Kazakhstan

Suleyman Demirel University, Kazakhstan logo
Sep 2015 - Jul 2016
Almaty, Kazakhstan
Taught Probability and Statistics for Engineers, Differential Equations, Linear Algebra
Instructed Real Analysis and Calculus for Engineers courses
Developed curriculum and assessment materials for mathematics courses
Mentored students in advanced mathematical concepts and problem-solving techniques
Technologies Used:
Mathematical EducationStatistical AnalysisCurriculum Development

Research Assistant

Boğaziçi University

Boğaziçi University logo
Sep 2013 - Aug 2015
Istanbul, Turkey
Assisted in academic research projects focusing on mathematical statistics, probability theory, and statistical modeling
Contributed to research publications and academic conferences in mathematics and statistics
Conducted theoretical research in probability theory and statistical mechanics
Collaborated with faculty on advanced mathematical research projects
Technologies Used:
Mathematical ResearchProbability TheoryStatistical ModelingAcademic Writing

Instructor

Suleyman Demirel University, Kazakhstan

Suleyman Demirel University, Kazakhstan logo
Sep 2012 - Aug 2013
Kazakhstan
Taught Calculus for Economics, Calculus for Engineers
Developed curriculum and assessment materials for mathematics courses
Mentored students in advanced mathematical concepts and problem-solving techniques
Conducted tutorial sessions and provided academic support to students
Technologies Used:
Mathematical EducationCalculusEngineering MathematicsCurriculum Development

Featured Projects

Showcasing innovative AI and machine learning solutions that drive real business impact

SalesShortcut – Autonomous AI Sales Team

Won Grand Prize at Google Cloud Agent Development Kit hackathon (10,000+ participants). Built 34 specialized agents orchestrated via ADK, deployed as microservices on Google Cloud Run with advanced orchestration patterns.

Google CloudLangGraphVertex AIBigQuery+2 more
Enterprise RAG Knowledge Assistant

Developed internal AI assistant for Beyond enabling teams to query pricing, promotion, product, inventory data from documents, spreadsheets, and images with OCR and metadata extraction.

RAGOCRVector EmbeddingsDocument Processing+1 more
Multimodal Retrieval-Augmented Generation System

Advanced AI system combining multiple data modalities for enhanced information retrieval and generation capabilities with state-of-the-art performance.

RAGMultimodal AIVector SearchLLM+1 more
Agentic AI Exploration

Research into autonomous AI agents and their applications, exploring advanced agent architectures and coordination mechanisms for complex problem-solving.

AI AgentsLangGraphMulti-Agent SystemsPython+1 more
Sponsored Ads Optimization (SPA)

ML-driven advertising optimization platform that maximizes ROI through intelligent bid management and audience targeting strategies.

Machine LearningOptimizationAd TechPython+1 more
Machine Learning Coupon Personalization (MLCP)

Personalized marketing system that uses ML algorithms to deliver targeted coupon recommendations, increasing customer engagement and conversion rates.

PersonalizationRecommendation SystemsMLCustomer Analytics+1 more

Technical Skills

Comprehensive expertise across modern technologies and frameworks

Programming Languages

PythonAdvanced
RAdvanced
SQLAdvanced
PySparkAdvanced
ScalaIntermediate

ML Frameworks

PyTorchAdvanced
TensorFlowAdvanced
KerasAdvanced
XGBoostAdvanced
LightGBMAdvanced
TransformersAdvanced

Cloud Platforms

Google Cloud Platform (GCP)Advanced
AzureAdvanced
AWSAdvanced

MLOps/DevOps Tools

DockerAdvanced
JenkinsAdvanced
AirflowAdvanced
MLflowAdvanced
KubeflowAdvanced
LangGraphAdvanced

Databases

MySQLIntermediate
PostgreSQLIntermediate
MongoDBIntermediate
BigQueryAdvanced

Statistical Methods & Optimization

Bayesian ModelingAdvanced
A/B TestingAdvanced
Linear ProgrammingAdvanced
Convex OptimizationAdvanced
Reinforcement LearningAdvanced
Causal ModelingAdvanced
30+
Technologies
5+
Years Experience
6
Skill Categories

Education

Academic foundation and continuous learning journey in technology and innovation

University of Utah logo

University of Utah

Salt Lake City, UT, USA
GPA: 4.0/4.0

Ph.D. in Mathematics

2016 - 2020

Specialized in probability theory, stochastic processes, and mathematical analysis. Conducted research on random walks in random environments with applications to statistical mechanics.

Relevant Coursework
Advanced Probability TheoryStochastic ProcessesMathematical StatisticsReal AnalysisMeasure TheoryFunctional AnalysisStatistical MechanicsRandom Walk TheoryMartingale TheoryErgodic TheoryPartial Differential EquationsNumerical AnalysisOptimization TheoryMathematical ModelingTopologyAbstract AlgebraComplex AnalysisDifferential GeometryMathematical PhysicsResearch Methods
University of Utah logo

University of Utah

Salt Lake City, UT, USA
GPA: 4.0/4.0

M.S. in Statistics

2017 - 2019

Focused on advanced statistical methods, machine learning, and data analysis. Applied state-of-the-art machine learning models to construct prediction engines for complex datasets.

Relevant Coursework
Machine LearningDeep LearningStatistical Learning TheoryBayesian StatisticsMultivariate StatisticsTime Series AnalysisRegression AnalysisExperimental DesignData MiningStatistical ComputingNonparametric StatisticsSurvival AnalysisCausal InferenceStatistical ModelingComputational StatisticsBig Data AnalyticsStatistical Machine LearningAdvanced R ProgrammingPython for Data ScienceDatabase Systems
Boğaziçi University logo

Boğaziçi University

Istanbul, Turkey
GPA: 4.0/4.0

M.S. in Mathematics

2013 - 2015

Advanced study in probability theory, statistical inference, and mathematical modeling. Conducted research in theoretical probability and statistical mechanics.

Relevant Coursework
Probability TheoryMathematical StatisticsStatistical InferenceLinear AlgebraReal AnalysisComplex AnalysisDifferential EquationsNumerical MethodsMathematical ModelingOperations ResearchGame TheoryGraph TheoryCombinatoricsAbstract AlgebraTopologyMeasure TheoryFunctional AnalysisOptimizationMathematical LogicSet Theory
Boğaziçi University logo

Boğaziçi University

Istanbul, Turkey
GPA: 4.0/4.0

B.S. in Mathematics

2009 - 2012

Strong foundation in pure and applied mathematics, including analysis, algebra, topology, and mathematical modeling. Graduated with highest honors.

Relevant Coursework
Calculus I-IVLinear AlgebraDifferential EquationsReal AnalysisAbstract AlgebraProbability and StatisticsDiscrete MathematicsNumber TheoryGeometryTopologyComplex AnalysisNumerical AnalysisMathematical LogicSet TheoryGraph TheoryCombinatoricsMathematical ModelingOperations ResearchComputer ProgrammingPhysics I-II
4
Degrees Earned
4
High Honours
80
Courses Completed

Selected Publications

Research contributions in mathematics, probability theory, and statistical mechanics

A Debiased Machine Learning Framework for Optimizing Price Promotion within E-commerce

Sergazy NurbavliyevKDD 2025 - Applied Data Science Track2025

Published in the Applied Data Science Track at KDD 2025. Proposed the Delta Method, a de-meaning technique inspired by fixed-effects regression, to isolate within-product variation and estimate causal treatment effects from observational data. Demonstrated a 3% increase in revenue and 2% increase in profit via a real-world pricing experiment using the method on a furniture e-commerce platform.

A shape theorem and a variational formula for the quenched Lyapunov exponent of random walk in a random potential

Sergazy NurbavliyevarXiv preprint2020

We study the quenched Lyapunov exponent of random walk in a random potential and establish a shape theorem and variational formula for this quantity. Our results provide new insights into the behavior of random walks in random environments with applications to statistical mechanics and probability theory.

View PaperDOI: arXiv:2006.10871

Get In Touch

Ready to collaborate on your next AI project? Let's discuss how we can bring your ideas to life.

Let's Start a Conversation

I'm always excited to discuss new opportunities, innovative projects, and potential collaborations. Whether you have a specific project in mind or just want to explore possibilities, I'd love to hear from you.

Location

Salt Lake City, Utah, United States

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