Оксана

OKSANA MAZURAK
[open contact info](look above in the "contact info" section) — Lviv, Ukraine
[open contact info](look above in the "contact info" section) — [open contact info](look above in the "contact info" section) — github.com/oksanamazurak

OBJECTIVE
AI/ML Engineer specializing in scalable AI systems, NLP, and LLM-based solutions with end-to-end deployment
experience.

EDUCATION
Bachelor of Artificial Intelligence Systems, Lviv Polytechnic National University Sep 2022 - Jun 2026

SKILLS
Python (pytorch, tensorflow, scikit-learn, numpy, pandas, scipy, matplotlib, seaborn), SQL
LLMs API, LangGraph, LangChain, LlamaIndex, RAG, NLP
Django/DRF, FastAPI, Flask, Celery
PostgreSQL, MySQL, MongoDB, Redis, Vector DBs (Pinecone, Weaviate)
AWS (Bedrock, EC2, S3), Docker, Kubernetes, Git, Postman

WORK EXPERIENCE
AI Engineer Feb 2025 - Present
Globaldev Group Remote
• Developed an AI recruitment agent conducting structured interviews with OpenAI API.
• Built a production-ready LLM-powered RAG chatbot orchestrating multiple agents using LangChain and Lang-
Graph.
• Developed a RAG system for text generation based on Wikipedia, using LlamaIndex.
• Implemented prompt engineering and caching strategies to optimize prompts and reduce response latency.
• Deployed backend systems supporting 3000+ users with 98% uptime using Docker, AWS, and Django.

PROJECTS
AI Healthcare Chatbot
• Led NLP pipeline, dataset preprocessing, and model integration.
Heart Disease Prediction System
• Implemented feature engineering pipeline in Python (pandas, scikit-learn), trained and tuned models (Light-
GBM, RF) .
Skin Lesion Classification System
• Developed skin neoplasm classification models (CNNs, ViT) using PyTorch and TensorFlow.

CERTIFICATES
Diploma for Participation in Hackathon (Ministry of Digital Transformation of Ukraine), COMPETITION ITS
DISCO BOOST (Lviv Polytechnic National University), SQL for Data Science (Coursera), Advanced Artifi-
cial Intelligence Technologies in Autonomous Driving, Healthcare and Robotics (AGH University of Krakow),
Machine Learning Foundations: A Case Study Approach (Coursera)

LEADERSHIP
• Mentor at Data Science Club - mentored a team of 3 junior students on data analysis, ML, NLP, and final
project development.