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Roman Kagan

Technical Architect specializing in Search Systems, Machine Learning, and AI Solutions

Skills

Programming Languages

- Java (Full Professional)
- Scala (Full Professional)
- Kotlin (Professional Working)
- Python (Full Professional)
- C++ (Professional Working)
- Rust (Professional Working)
- Zig (Professional Working)

Technical Expertise

Core Competencies

  • Domain Architecture
  • Search Engine Technologies (Solr, OpenSearch, ELK)
  • Machine Learning Algorithms
  • Learning to Rank (LeTOR)
  • Large Language Models (LLMs)
  • Retrieval-Augmented Generation (RAG)

Professional Experience

Grid Dynamics | Technical Architect | Oct 2024 - Present

  • Architect scalable search and ML systems
  • Implement advanced ranking algorithms and LLMs
  • Lead cross-functional teams in search solutions development

McKesson | Senior Software Engineer | Mar 2019 - Jun 2024

  • Enhanced search systems and data architecture
  • Implemented monitoring systems and CI/CD pipelines

Previous Experience

  • WalmartLabs | Senior Software Engineer
  • LG Electronics | Senior Software Engineer
  • Albertsons Companies | Senior Software Engineer
  • Kroger Technology | Senior Software Engineer

Education

  • University of Michigan-Dearborn | Computer Science
  • Belarusian National Technical University | BS, Computer Design and Engineering

Certifications

  • Think Like A Relevance Engineer Solr
  • Hello Learning-To-Rank Training

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