Jarosław Osmanski
Senior Data Engineer
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolJarosław Osmanski is a Senior Data Engineer based in Warsaw with seven years of professional experience building scalable data and networked systems across finance and telecom sectors. He combines hands-on backend development in Python and Scala with DevOps expertise in AWS and Docker, gained at companies like CodiLime and GetInData, and now applies that to data engineering at AXA Avanssur. His open-source contributions to the well-known magma project show a focus on secure, production-grade networking features—PKCS#8 key support, CRL validation, and data plane validation—highlighting attention to security and protocol correctness. Comfortable moving between low-level C++ and high-level data platforms, he has a track record of removing legacy baggage and tightening integration logic to improve reliability. Trained as a computer scientist at Uniwersytet Warszawski, he blends academic foundations with pragmatic engineering across the full stack of data and network infrastructure.
7 years of coding experience
9 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at Uniwersytet Warszawski
English
Stackoverflow
250reputation
15kreached
15answers
6questions
Github Skills (24)
5g10
4g10
go10
network-protocol10
python9
c119
devops9
c179
apidoc8
api8
dockers7
database-design7
bazel7
docker7
html6
Programming languages (2)
Github contributions (5)
magma/magma
Jul 2022 - Sep 2022
Platform for building access networks and modular network services
Role in this project:
Back-end Developer
Back-end DeveloperContributions:19 reviews, 16 commits, 23 PRs in 2 months
Contributions summary:Jarosław primarily contributed to the back-end logic and infrastructure of the magma/magma repository, focused on network access and service platform development. Their work includes implementing PKCS#8 support for key handling, adding validation logic for data plane parameters, and enabling the Radio Controller (RC) enodebd_client to send update requests. Furthermore, the user added Certificate Revocation List (CRL) validation for SAS SSL certificates, ensuring secure communication. They also worked on removing legacy channel database table, and fixing inconsistencies for handling grant responses.
pythonmobileltevagrant5g
hejjestemjarek/magma
Jul 2022 - Sep 2022
Platform for building access networks and modular network services
Contributions:107 pushes, 32 branches in 2 months
networking4gjunipermodularnetwork
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