Krzysztof Ruczaj
Co-Owner at Soled sp. z o.o.
Białystok, Podlaskie Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolKrzysztof Ruczaj is a pragmatic senior Java engineer and co-owner with nine years of experience building high-throughput, well-tested systems for finance, gaming, and analytics. He designs and implements scalable architectures—recently shaping real-time social casino features on Kafka/Hazelcast/GCP and previously building payment flows for unbranded bank integrations at PayPal. Comfortable across the stack, he has delivered backend-heavy products in Java, Kotlin and Python while also shipping React frontends and CI/CD-driven deployments on Kubernetes and GCP. He pairs a data-science postgraduate background with hands-on performance and concurrency work, having tackled live-traffic issues and large-scale data processing. Beyond engineering, he co-runs a lighting and mirrors business, bringing a practical entrepreneurial perspective to product-driven decisions.
9 years of coding experience
7 years of employment as a software developer
Postgraduate education, Data Science, Postgraduate education, Data Science at Bialystok University of Technology
Polish, English
Github Skills (21)
crf10
metadata9
pdf9
transformers7
machine-learning7
deep-learning7
expressions4
docker-image4
gradle4
nlp3
extraction3
regex3
docker2
hint2
python2
Programming languages (2)
Github contributions (5)
czyzby/bialjam-17
Jun 2017 - Aug 2019
Contributions:60 pushes, 2 branches in 2 years 3 months
krzysiekruczaj/RegexGenerator
Sep 2017 - Sep 2017
Contributions:7 commits, 3 pushes, 1 branch in 1 day
nlplookextractionpythonregular-expressions
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