I am a machine learning engineer with 3 years of experience building and deploying ML/DL systems. I value integrity and evidence-driven work — testing hypotheses, running rigorous experiments, and correcting course quickly when results don’t hold. I build reproducible pipelines in Python and SQL, I work with neural networks and Transformers (including RAG systems), and I deliver production-ready code. I enjoy designing scalable data workflows, training models, and collaborating with teams to translate complex problems into practical, impactful solutions.

Hayk Nalchajyan

I am a machine learning engineer with 3 years of experience building and deploying ML/DL systems. I value integrity and evidence-driven work — testing hypotheses, running rigorous experiments, and correcting course quickly when results don’t hold. I build reproducible pipelines in Python and SQL, I work with neural networks and Transformers (including RAG systems), and I deliver production-ready code. I enjoy designing scalable data workflows, training models, and collaborating with teams to translate complex problems into practical, impactful solutions.

Available to hire

I am a machine learning engineer with 3 years of experience building and deploying ML/DL systems. I value integrity and evidence-driven work — testing hypotheses, running rigorous experiments, and correcting course quickly when results don’t hold.

I build reproducible pipelines in Python and SQL, I work with neural networks and Transformers (including RAG systems), and I deliver production-ready code. I enjoy designing scalable data workflows, training models, and collaborating with teams to translate complex problems into practical, impactful solutions.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

Russian
Advanced
English
Advanced
Armenian
Fluent
German
Advanced

Work Experience

Machine Learning Engineer at Foundation for Armenian Science and Technology (FAST)
January 1, 2025 - June 1, 2025
Developed and optimized desktop applications to streamline code integration. Implemented Retrieval-Augmented Generation (RAG) models and web scrapers to improve data retrieval and processing.
Python and Machine Learning Tutor at Foundation for Armenian Science and Technology (FAST)
September 1, 2025 - Present
Taught 11th-grade students as part of the 'Generation AI' course.
Statistical Programmer (R) at Hydralab LLC
July 1, 2025 - Present
Developing robust ETL pipelines using Python and T-SQL for a dimensional data warehouse, featuring SCD Types 1–4, Dockerized SQL Server, and automated Excel data ingestion with detailed logging.

Education

Bachelor of Data Science at American University of Armenia
January 1, 2022 - February 17, 2026
B.S. in Data Science at American University of Armenia
January 1, 2022 - March 26, 2026

Qualifications

Advanced Machine Learning
November 1, 2023 - May 1, 2024
Discrete Mathematics, Linear Algebra, Data Structures and Algorithms
November 1, 2023 - May 1, 2024

Industry Experience

Software & Internet, Education, Professional Services, Media & Entertainment