Lukasz Kolodziejczyk
Senior Data Science Engineer
Wroclaw Metropolitan Area Poland
Summary
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Rockstar🎓
Top SchoolLukasz Kolodziejczyk is a Senior Data Science Engineer with a decade of experience building production-grade ML systems and data pipelines, currently focusing on ambiguous, high-expectation problems. He led core model development and a TensorFlow→PyTorch migration at Mostly AI, delivering 100× end-to-end performance improvements and shipping an agentic analytics assistant used by thousands. Comfortable across the stack, he has modernized ETL and SDKs, integrated LLM finetuning and external data systems, and introduced automated QA to improve trust in synthetic tabular outputs. His background spans mission-critical systems, CI-driven toolchains, and both backend and full-stack roles, reflecting deep engineering pragmatism and cross-language fluency. Based in Wroclaw, he pairs MSc training in Intelligent Systems with a track record of turning unclear requirements into scalable, auditable solutions.
10 years of coding experience
10 years of employment as a software developer
Bachelor of Science (BSc), Computer Science, Bachelor of Science (BSc), Computer Science at Wrocław University of Science and TechnologyMaster of Science (MSc), Advanced Computer Science (Intelligent Systems), Master of Science (MSc), Advanced Computer Science (Intelligent Systems) at University of Leeds
Polish, English, Spanish
Stackoverflow
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0reached
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Github Skills (40)
differential-privacy10
dart-web10
synthetic-data10
dart-sass10
privacy-enhancing-technologies10
angulardart9
machine-learning9
generative-ai9
angular9
dart9
dart-packages8
web-framework8
monorepository8
sass8
quality-assurance8
Programming languages (6)
Github contributions (5)
mostly-ai/mostlyai-mock
May 2025 - Sep 2025
Synthetic Mock Data 🔮
Contributions:3 reviews, 63 PRs, 94 pushes in 4 months
mock-datasynthetic-datatest-data
mostly-ai/mostlyai-engine
Jan 2025 - Jan 2026
Synthetic Data Engine 💎
Contributions:40 reviews, 51 PRs, 169 pushes in 1 year
synthetic-datadifferential-privacysynthetic-data-generatorsynthetic-data-generation
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