Vojta Machytka


Data Scientist

MIT Sloan Master of Business Analytics Candidate


Email: vojta97@mit.edu

LinkedIn: linkedin.com/in/vmachytka

Data Science Projects

Ride-Sharing Promotion Impact Analysis in NYC

Developed an interactive Tableau dashboard analyzing 2021 ride-sharing data from Uber, Lyft, and taxis in NYC to evaluate the impact of a promotion in a specific borough. This tool provides ride-sharing managers with actionable insights on market trends, fare fluctuations, and geographic usage patterns to inform strategic decisions and optimize market presence.

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Redlining, Speculation, Displacement in the City of Boston

Partnered with the Metropolitan Area Planning Council to build a scrollytelling website featuring five interactive visualizations using React and D3 in JavaScript. This project provided crucial insights to policymakers on the impact of speculative investment on resident displacement, influencing policy decisions by highlighting historical redlining and current investment trends in Boston, aiming to protect vulnerable communities.

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Predicting Hourly Demand for Boston BlueBike Service

Forecasted hourly BlueBike demand using Random Forest, XGBoost, Prophet, and SARIMA time series models in R with a precision of within 2 bikes, informing strategic dock allocation to enhance system efficiency. Analyzed over 5.4 million bike trips and weather data from 2017-2019, identifying key factors such as temperature and commuter hours to optimize resource allocation and improve customer satisfaction.

Financial Fraud Detection System

Engineered a comprehensive financial fraud detection system utilizing Neural Networks, Optimal Classification Trees, Random Forest, and XGBoost on a dataset of over 200K credit card transactions. This system accurately pinpointed fraudulent activities with over 90% accuracy.

Data Science Experience

Data Science Intern | MIT Capstone Project (Spring 2024 - Present)

At McKinsey, I streamlined operational efficiency for a 40K+ user knowledge management platform by automating the abstract creation and classification of 50K documents. Utilizing cutting-edge technologies like Generative AI and Large Language Models in Python, I enhanced search-ability and saved significant time for analyst. This role solidified my skills in applying advanced analytics and machine learning to improve overall system efficiency.

Skills: Python · Large Language Models · Generative AI · Natural Language Processing · Data Classification · Exploratory Data Analysis · Communication

Data Science Intern | MIT Analytics Lab Project (Fall 2023)

At ClassHook, I spearheaded the automation of classifying over 7,200 educational clips into more than 100 academic subjects using natural language processing (NLP) techniques and LLMs in Python. This project resulted in a 70% reduction in video categorization time, boosting content curation for K-12 educators. I also designed an intuitive API-based platform in Gradio and regularly presented findings to the CEO, effectively guiding the implementation of our automation solution.

Skills: Python · Large Language Models · Generative AI · Natural Language Processing · Data Classification · Data Analysis · Data Visualization · Communication

Senior Analyst (2020 - 2023)

At FTI Consulting (within their economic consulting subsidiary Compass Lexecon), I collected, processed, and analyzed over 100 million data points to shape expert testimony and guide strategic decisions for leading U.S. and foreign airlines. My work involved conducting statistical and time series regression analyses in Stata and R, as well as creating dynamic data visualizations and dashboards in Tableau. These efforts supported decision-making processes for airline executives, legal teams, and economists. I also devised and led a three-week new hire training program, fostering a welcoming work environment for incoming hires.

Skills: Regression Analysis · Data Collection · Visualization · Tableau · R · Economic Research · Leadership · Stata - Software for Statistics and Data Science · Econometric Modeling · Microsoft Excel · Analytical Skills · Communication

Co-President of a DEI Initiative

Organized Mental Health Awareness Events

Initiated events focusing on mental health awareness, creating a supportive environment for open discussions and providing resources to help manage stress and well-being.

Diverse Cultural Celebrations

Organized trivia events celebrating Black History Month, Juneteenth, and other cultural milestones, enabling people to learn about their importance in a fun and engaging way.

Hosted Expert Speakers

Hosted PhD speakers to present their research on the gender wage gap and other diversity topics, fostering an inclusive environment and sparking engaging conversations among coworkers across all levels of the company.

Feedback

“From the beginning, Vojtech emerged as a leader of his group, clearly communicating goals, deliverables, progress, and meeting times. We gave Vojtech and his team an ambitious project, and over several months, they not only delivered on the project but exceeded our expectations with their diligent work.”

Alexander Deep, CEO at ClassHook

“Vojta was my primary contact for all things logistics, supporting a talk that I gave to the Sloan master's students. I had never been to the campus before but Vojta was pro-active in reaching out well in advance, to ensure that I had what I needed to set me up for success. He was friendly, quick to respond and even followed up after the event. Because the logistics were seamless, I could focus on delivering the content and greeting the students. A heartfelt thank you Vojta for all your help!”

April Enoe, Senior Leader of Technical Program Management & Operations at Uber