Kostiantyn Omelianchuk
Research Area Technical Lead at Superhuman
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolKostiantyn Omelianchuk is a research-focused technical lead with 8+ years of experience turning state-of-the-art NLP into production writing-assistance systems used by tens of millions. He has led applied research teams at Grammarly and Superhuman, delivering advances in grammatical error correction, multilingual modeling, LLM fine-tuning, synthetic data generation, and automated evaluation. Kostiantyn combines a strong academic publication record with product-minded engineering, optimizing for engagement, retention, and monetization under strict cost, latency, and throughput constraints. He is skilled at shepherding research prototypes into scalable services and at using LLMs as both models and evaluators to accelerate iteration. Based in Berlin with a master’s in system analysis from Kyiv Polytechnic Institute, he balances deep technical expertise with hands-on delivery and team leadership. An often-overlooked strength is his focus on measurable business impact—ensuring research moves the needle, not just papers.
8 years of coding experience
10 years of employment as a software developer
Igor Sikorsky Kyiv Polytechnic Institute
English, Украинский, German, Russian
Github Skills (31)
rewrite10
tagging10
sequence-labeling10
roberta10
simplification10
error-correction10
in-progress9
transformers9
natural-language-processing9
nlp9
bert8
datasets8
language-processing8
named-entity-recognition8
machine-translation8
Programming languages (2)
Github contributions (5)
grammarly/gandalf
Feb 2019 - Mar 2019
Contributions:22 pushes, 1 branch in 5 days
grammarly/pillars-of-gec
Apr 2024 - May 2024
Contributions:5 pushes, 1 branch in 13 days
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