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Dmytro VykhovanetsDV
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Dmytro Vykhovanets

@dmytrovykhovanets

Senior Data Scientist and AI Engineer building production LLM and classical ML systems for measurable business outcomes.

Ukraine
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What I'm looking for

I’m looking for a team where I can ship production LLM + ML systems—RAG and agentic workflows included—with a focus on measurable accuracy, human-in-the-loop design, and engineering practices that keep solutions reliable over time.

I’m a Senior Data Scientist and AI Engineer with 4+ years delivering production machine learning and generative-AI systems for enterprise banking, fintech, industrial supply, and U.S. healthcare clients. I start from ambiguous business needs and translate them into measurable solutions I can ship and defend in production.

My strongest work sits at the intersection of classical ML and modern LLMs: retrieval-augmented systems, agentic workflows, schema and entity mapping, NLP, and document AI. I design data pipelines, train and fine-tune models, and build LLM agents that turn retrieved context into operational decisions.

Most recently, I built AI data-ingestion and cataloging capabilities for a major U.S. building-materials supplier—normalizing hundreds of manufacturer formats into a single 250+ column schema with a schema-mapping model (85% accuracy@5) and human review for low-confidence cases. I also created a hierarchical product-categorization system (83% accuracy through level 3) and extended it with OCR plus a vision LLM to extract structured attributes from spec-sheet PDFs, removing manual bottlenecks.

Earlier, I led work across RAG assistants and predictive systems: a board-member RAG analysis support tool using AWS Bedrock and Milvus with hybrid entity recognition, an adaptive learning recommendation engine improved through hypothesis development and A/B testing, and an end-to-end documentation autogenerator integrated into CI/CD. Across contracts, I’ve delivered an investment-analytics RAG chatbot, validation-and-recalculation pipelines for sensitive financial data, an Email-to-Jira converter (87% accuracy), and a natural-language-to-SQL engine that earned a 4.7/5 marketplace rating.

Experience

Work history, roles, and key accomplishments

DataArt logoDA

Machine Learning Engineer

DataArt

Jul 2023 - Aug 2024 (1 year 1 month)

Developed a RAG-powered investment-analytics chatbot over user-uploaded and curated PDFs using LangChain and OpenAI GPT-4. Built CI/CD benchmarking and Azure/Databricks validation-and-recalculation pipelines for sensitive financial data.

SA

Machine Learning Engineer

SaaSJet

Apr 2022 - Jul 2023 (1 year 3 months)

Productized an Email-to-Jira task converter using spaCy to extract tasks and descriptions from unstructured emails and create Jira items. Built a natural-language-to-SQL query engine with a few-shot GPT-3.5 approach and a rate-limited API, and implemented a market-intelligence web scraper using BeautifulSoup and Selenium.

IE

Data Scientist / AI Engineer (Team Lead)

Independent Contract Engagements

Jan 2025 - Present (1 year 6 months)

Led and delivered multiple independent contract AI projects, spanning churn forecasting, healthcare policy analysis, and multimodal document parsing. Implemented sentiment-based churn features, built policy extraction agents for payer coverage insights, and developed multimodal fine-tuning pipelines using OCR benchmarking and LoRA/QLoRA.

Education

Degrees, certifications, and relevant coursework

Ternopil Ivan Puluj National Technical University logoTU

Ternopil Ivan Puluj National Technical University

Master's Degree, Cybersecurity

2024 - 2025

Pursued a Master's degree in Cybersecurity at Ternopil Ivan Puluj National Technical University from 2024 to 2025.

Ternopil Ivan Puluj National Technical University logoTU

Ternopil Ivan Puluj National Technical University

Bachelor's Degree, Cybersecurity

2020 - 2024

Earned a Bachelor's degree in Cybersecurity at Ternopil Ivan Puluj National Technical University from 2020 to 2024.

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