Markiian Hryhorchuk
Senior Data Scientist
Porto
Summary
Lead data scientist across the full ML lifecycle, delivering production ML at scale—including a #1-ranked, daily-retrained anomaly-detection platform, large-scale recommendation systems (weekly refresh), and real-time CV. Known for leading teams, owning timelines and outcomes, and aligning technical work with business results; deep MLOps and cloud experience (AWS/GCP).
Overview
7
7
years of professional experience
Work History
Senior Data Scientist
Bennett Data Science
02.2020 - Current
- Built an end-to-end anomaly-detection platform with daily retraining (ingestion → feature engineering → training → deployment), delivering a production-grade system that handled high-traffic loads and ranked #1 in the client’s evaluation against competing solutions.
- Designed and productionized a recommendation system combining NLP embeddings and collaborative filtering over millions of documents, with weekly model refresh.
- Built fast-cycle experimentation for image generation (SOTA approaches), establishing a repeatable evaluation loop and cutting experiment time
Data Science Researcher
Veryyou
09.2019 - 02.2020
- Trained an image-classification model to predict best-fit clothing for users.
- Built clothing clustering and attribute-tagging pipelines (embeddings + similarity search) to organize the catalog.
- Created a rapid hypothesis-testing workflow (small-scale experiments, automated evaluation), reducing experiment cycle time.
Data Science Researcher
ARVI
05.2018 - 09.2019
- Development of the core image-enhancement model (automatic retouching) used in production.
- Built CV algorithms for super-resolution, denoising, color correction, and artifact removal.
Education
Computer Science
Kyiv Polytechnic Institute
Kyiv06-2020
Skills
- MLOps & Data Engineering: Data pipelines & ETL, model deployment & serving, monitoring & scheduled retraining, data warehousing, APIs/endpoints
- Cloud & Infra: AWS, GCP, Azure, Docker
- Data & Search: SQL databases, Elasticsearch
- Experimentation & Statistics: A/B testing, hypothesis testing, regression & predictive modeling, model evaluation
Timeline
Senior Data Scientist
Bennett Data Science
02.2020 - Current
Data Science Researcher
Veryyou
09.2019 - 02.2020
Data Science Researcher
ARVI
05.2018 - 09.2019
Computer Science
Kyiv Polytechnic Institute
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