Alexei

Alexei Korolev

\hat{f}(\xi) = \int_{-\infty}^{\infty} f(x) e^{-2\pi i x \xi} \, dx

\int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2}

f(x) = \frac{1}{\sigma \sqrt{2\pi}} e^{-\frac{(x - \mu)^2}{2\sigma^2}}

// Simple quicksort implementation
function quickSort(arr) {
    if (arr.length <= 1) return arr;
    
    const pivot = arr[0];
    const left = arr.filter((x, i) => i > 0 && x < pivot);
    const right = arr.filter(x => x >= pivot);
    
    return [...quickSort(left), pivot, ...quickSort(right)];
}

// Binary search implementation
function binarySearch(arr, target) {
    let left = 0;
    let right = arr.length - 1;
    
    while (left <= right) {
        const mid = Math.floor((left + right) / 2);
        if (arr[mid] === target) return mid;
        if (arr[mid] < target) left = mid + 1;
        else right = mid - 1;
    }
    return -1;
}

\int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2}

E[X] = \int_{-\infty}^{\infty} x f(x) dx

// Binary search implementation
function binarySearch(arr, target) {
    let left = 0;
    let right = arr.length - 1;
    
    while (left <= right) {
        const mid = Math.floor((left + right) / 2);
        if (arr[mid] === target) return mid;
        if (arr[mid] < target) left = mid + 1;
        else right = mid - 1;
    }
    return -1;
}

// Binary search implementation
function binarySearch(arr, target) {
    let left = 0;
    let right = arr.length - 1;
    
    while (left <= right) {
        const mid = Math.floor((left + right) / 2);
        if (arr[mid] === target) return mid;
        if (arr[mid] < target) left = mid + 1;
        else right = mid - 1;
    }
    return -1;
}

Hi, nice to meet you! 👋

I'm a Computer Science student at Princeton University minoring in Statistics & Machine Learning. I build cool things.

Tech Stack

PythonJavaScriptReactNode.jsAWSTensorFlowSQLDocker

Recent Experiences

Data Science Intern

Lycoming EnginesFeb 2025 - Present

PythonMachine LearningForecasting

Data Science Intern

Lycoming Engines

Feb 2025 - Present

Developed machine learning models to predict engine failures. Built predictive engine behavior models using signal processing, mathematics, and physics.

Technologies & Skills

PythonData AnalysisSQLData PreprocessingFeature ExtractionPredictive PhysicsForecastingSciKit-LearnTensorflow

Data Science Intern

WIT SportsJan 2025 - Feb 2025

PythonNodeJSSQL

Data Science Intern

WIT Sports

Jan 2025 - Feb 2025

Revamped Fan AI, an algorithm that predicts how engaged a fan is with their sports team. Augmented the feature engineering process and built an in-house comprehensive database of zipcode prosperity scores in the US.

Technologies & Skills

PythonData AnalysisSQLDatabase DesignWeb ScrapingAI RankingProbability

Software Engineering Intern

OrgoSummers 2023, 2024

ReactFirebaseMachine Learning

Software Engineering Intern

Orgo

Summers 2023, 2024

Created a new customer invites system, boosting user acquisition by up to 25-50% using React and Firebase. Added the infrastructure necessary for an "import from Google" feature.

Technologies & Skills

React-NativeFirebaseMachine LearningData PipelinesGoogle Cloud FunctionsGoogle APIs

Data Research Intern

Princeton UniversitySummer 2024

CPythonSimulation

Data Research Intern

Princeton University

Summer 2024

Designed large-data simulations through the Princeton Computing Cluster to conduct quantitative research. Designed and tested a Python program for calculating and visualizing molecular tension, yielding an accurate way to quantify induced simulation tension on chromatin.

Technologies & Skills

CPythonData AnalysisData VisualizationSimulationQuantitative ResearchPhysics

App Developer Intern

Huntington Breast Cancer Action CoalitionSummer 2023

Android StudioJavaHive

App Developer Intern

Huntington Breast Cancer Action Coalition

Summer 2023

Created a lifestyle-watching app that helps prevent up to 40% of cancer cases through habit-changing. Designed a backend storage system through Hive. Assisted the front-end team with animation design.

Technologies & Skills

Android StudioJavaHiveData StorageUI Design

Game Developer Intern

BTU GamesNov 2022 - May 2023

C++Unreal EngineOAuth 2.0

Game Developer Intern

BTU Games

Nov 2022 - May 2023

Designed C++ backend code in Unreal engine that integrated the OAuth 2.0 plugin for multi-platform login capabilities. Created and implemented the character movement framework to interact seamlessly with a soft-body physics engine.

Technologies & Skills

C++Unreal EngineOAuth 2.0LyraSoft-Body PhysicsGame Design

Programming Instructor

Code NinjasNov 2022 - May 2023

PythonEducation

Programming Instructor

Code Ninjas

Nov 2022 - May 2023

Taught computer science and mathematics concepts in understandable ways (ex. 2D array representation, motion physics, etc.) Was called "Mister" for the first time.

Technologies & Skills

PythonEducationCurriculum DesignLesson PlanningStudent EngagementClassroom Management

AI Researcher

Rutgers Unviersity - GSETSummer 2022

MATLABPythonMachine Learning

AI Researcher

Rutgers Unviersity - GSET

Summer 2022

Co-authored an IEEE research paper investigating a novel AI application in mobile device security. Led the AI model development of the project, engineering models that achieved >92.5% accuracy without overfitting. Designed a MATLAB program to extrapolate unique statistical properties of structure-borne sound recordings.

Technologies & Skills

MATLABPythonMachine LearningSignal ProcessingResearchFeature EngineeringStructure-borne Sound

Featured Projects

IEEE AI Research Paper

Coauthored a research paper on AI and a novel method for biometric identification. Presented at the MIT Undergraduate Research Technology Conference.

MATLABPythonMachine LearningSignal ProcessingResearch

Website

Phonetic Sentiment Model

Demonstrated that English encodes sentiment within the phonetic pronunciation of words, a proof of concept for a lightweight NLP smart-sentiment model.

PythonNLPMachine LearningResearchData Analysis

GitHub

Forecasting Starcraft II Victories

Used LSTM neural networks to predict Starcraft II match outcomes with 92% accuracy, beating past research by almost 10%.

PythonRNNsMachine LearningData Wrangling

GitHub

Homogenous Gas Simulation Engine

Designed an optimized C++ homogenous gas engine, beating a Python-based one by 1000% in speed. Modeled accurate particle collisions and derived the Boltzman Distribution via sim.

C++PythonSimulationOptimizationPhysics

GitHub

This Profile

Designed an animated react profile without templates. Let my love for coffee and clean design shine through.

ReactJavaScriptCSSDesign

Website

For more projects, visit my GitHub

Leadership

Making an Impact

Beyond my technical work, I am active on campus in various leadership roles. Here is some of the work I've been doing.

Head of Software and Computer Vision

Princeton Autonomous Vehicle Engineering (PAVE)2023 - Present

Promoted to Head of Software / Computer Vision, and currently designing a low-cost autonomous vehicle platform.

Managed a team of 15 motivated students
Designed and trained object detection and image segmentation models
Led the design of a steering solution algorithm from sensory data
Led the design of a virtual pilot simulation
Planned and guided a subteam to create an ultrasonic dot cloud sensor
Provided mentorship, guidance, and planning

Head of Partnerships

TigerLaunch2023 - Present

Two-year partnerships officer @ TigerLaunch, the world’s largest student-run entrepreneurship competition.

Led a team of 6 and helped secure >$90K in sponsorship funds for the 2024-2025 season.
Built a robust desktop app that web-scrapes Princeton alumni contacts, increasing outreach output by at least 7x.
Opened a new regional competition in Istanbul, Turkie, partnering with Turkie’s largest Venture Capital organization.